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en/application-dev/application-models/application-context-stage.md
浏览文件 @ fd4a7143
......@@ -86,13 +86,13 @@ The application file paths obtained by the preceding contexts are different.
| Name| Path|
| -------- | -------- |
| bundleCodeDir | <Path prefix>/el1/bundle/|
| cacheDir | <Path prefix>/<Encryption level>/base/cache/|
| filesDir | <Path prefix>/<Encryption level>/base/files/|
| preferencesDir | <Path prefix>/<Encryption level>/base/preferences/|
| tempDir | <Path prefix>/<Encryption level>/base/temp/|
| databaseDir | <Path prefix>/<Encryption level>/database/|
| distributedFilesDir | <Path prefix>/el2/distributedFiles/|
| bundleCodeDir | \<Path prefix>/el1/bundle/|
| cacheDir | \<Path prefix>/\<Encryption level>/base/cache/|
| filesDir | \<Path prefix>/\<Encryption level>/base/files/|
| preferencesDir | \<Path prefix>/\<Encryption level>/base/preferences/|
| tempDir | \<Path prefix>/\<Encryption level>/base/temp/|
| databaseDir | \<Path prefix>/\<Encryption level>/database/|
| distributedFilesDir | \<Path prefix>/el2/distributedFiles/|
The sample code is as follows:
......@@ -118,13 +118,13 @@ The application file paths obtained by the preceding contexts are different.
| Name| Path|
| -------- | -------- |
| bundleCodeDir | <Path prefix>/el1/bundle/|
| cacheDir | <Path prefix>/<Encryption level>/base/**haps/\<module-name>**/cache/|
| filesDir | <Path prefix>/<Encryption level>/base/**haps/\<module-name>**/files/|
| preferencesDir | <Path prefix>/<Encryption level>/base/**haps/\<module-name>**/preferences/|
| tempDir | <Path prefix>/<Encryption level>/base/**haps/\<module-name>**/temp/|
| databaseDir | <Path prefix>/<Encryption level>/database/**\<module-name>**/|
| distributedFilesDir | <Path prefix>/el2/distributedFiles/**\<module-name>**/|
| bundleCodeDir | \<Path prefix>/el1/bundle/|
| cacheDir | \<Path prefix>/\<Encryption level>/base/**haps/\<module-name>**/cache/|
| filesDir | \<Path prefix>/\<Encryption level>/base/**haps/\<module-name>**/files/|
| preferencesDir | \<Path prefix>/\<Encryption level>/base/**haps/\<module-name>**/preferences/|
| tempDir | \<Path prefix>/\<Encryption level>/base/**haps/\<module-name>**/temp/|
| databaseDir | \<Path prefix>/\<Encryption level>/database/**\<module-name>**/|
| distributedFilesDir | \<Path prefix>/el2/distributedFiles/**\<module-name>**/|
The sample code is as follows:
......
en/application-dev/application-models/atomic-services-support-sharing.md
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# Setting Atomic Services to Support Sharing
By means of sharing, users can quickly access atomic services and use their features.
## How to Develop
In the sharing scenario, there are two parties involved: a target application that shares data and an application that obtains the shared data. The two can be physically the same. The target application uses the **onShare()** lifecycle callback to set the data to share. After the target application is started, you can run the **hdc shell aa dump -a** command to check the started services and processes and find its mission ID. After the current application is started, call the **abilityManager.acquireShareData()** API with the mission ID passed in to obtain the shared data.
> **NOTE**
>
> The mission ID of the target application can also be obtained by calling [missionManager.getMissionInfos()](../reference/apis/js-apis-app-ability-missionManager.md#getmissioninfos).
1. The target application calls **UIAbility.onShare()** provided by the UIAbility component to set the data to share. **ohos.extra.param.key.contentTitle** indicates the title of the content to share in the sharing box, **ohos.extra.param.key.shareAbstract** provides an abstract description of the content, and **ohos.extra.param.key.shareUrl** indicates the online address of the service. You need to set these three items as objects, with the key set to **title**, **abstract**, and **url**, respectively.
1. An application calls [UIAbility.onShare()](../reference/apis/js-apis-app-ability-uiAbility.md#onshare), a lifecycle callback provided by the UIAbility component, to set the data to share. In this lifecycle callback, **ohos.extra.param.key.contentTitle** indicates the title of the content to share in the sharing box, **ohos.extra.param.key.shareAbstract** provides an abstract description of the content, and **ohos.extra.param.key.shareUrl** indicates the online address of the service. You need to set these three items as objects, with the key set to **title**, **abstract**, and **url**, respectively.
```ts
import AbilityConstant from '@ohos.app.ability.AbilityConstant';
class MyUIAbility extends UIAbility {
onShare(wantParams) {
console.log('onShare');
wantParams['ohos.extra.param.key.contentTitle'] = {title: "W3"};
wantParams['ohos.extra.param.key.shareAbstract'] = {abstract: "communication for huawei employee"};
wantParams['ohos.extra.param.key.shareUrl'] = {url: "w3.huawei.com"};
wantParams['ohos.extra.param.key.contentTitle'] = {title: "OA"};
wantParams['ohos.extra.param.key.shareAbstract'] = {abstract: "communication for company employee"};
wantParams['ohos.extra.param.key.shareUrl'] = {url: "oa.example.com"};
}
}
```
2. The current application calls **abilityManager.acquireShareData()** to obtain the data shared by the target application. **missionId** indicates the target application's mission ID, which can be obtained by running the **hdc shell aa dump -a** command or calling the **missionManager.getMissionInfos()** API after the target application is started. **wantParam** indicates the data shared by the target application through the **UIAbility.onShare()** lifecycle callback.
2. A system dialog box calls [abilityManager.acquireShareData()](../reference/apis/js-apis-app-ability-abilityManager.md#acquiresharedata) to obtain data shared through atomic service sharing. Specifically, the system finds the UIAbility based on the mission ID and calls the **OnShare()** lifecycle of the UIAbility to obtain the shared data.
```ts
import abilityManager from '@ohos.app.ability.abilityManager';
......
en/application-dev/device/vibrator-guidelines.md
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......@@ -18,8 +18,85 @@ For details about the APIs, see [Vibrator](../reference/apis/js-apis-vibrator.md
| ohos.vibrator | stopVibration(stopMode: VibratorStopMode, callback: AsyncCallback&lt;void&gt;): void | Stops vibration in the specified mode. This API uses an asynchronous callback to return the result. |
| ohos.vibrator | stopVibration(): Promise&lt;void&gt; | Stops vibration in all modes. This API uses a promise to return the result. |
| ohos.vibrator | stopVibration(callback: AsyncCallback&lt;void&gt;): void | Stops vibration in all modes. This API uses an asynchronous callback to return the result. |
| ohos.vibrator | isSupportEffect(effectId: string): Promise&lt;boolean&gt; | Checks whether the passed effect ID is supported. This API uses a promise to return the result. The value **true** means that the passed effect ID is supported, and **false** means the opposite. |
| ohos.vibrator | isSupportEffect(effectId: string, callback: AsyncCallback&lt;boolean&gt;): void | Checks whether the passed effect ID is supported. This API uses an asynchronous callback to return the result. The value **true** means that the passed effect ID is supported, and **false** means the opposite. |
| ohos.vibrator | isSupportEffect(effectId: string): Promise&lt;boolean&gt; | Checks whether the passed effect ID is supported. This API uses a promise to return the result. The value **true** means that the passed effect ID is supported, and **false** means the opposite.|
| ohos.vibrator | isSupportEffect(effectId: string, callback: AsyncCallback&lt;boolean&gt;): void | Checks whether the passed effect ID is supported. This API uses an asynchronous callback to return the result. The value **true** means that the passed effect ID is supported, and **false** means the opposite.|
## Custom Vibration Format
Custom vibration enables you to design desired vibration effects by customizing a vibration configuration file and orchestrating vibration forms based on the corresponding rules.
The custom vibration configuration file is in JSON format. An example file is as follows:
```json
{
"MetaData": {
"Create": "2023-01-09",
"Description": "a haptic case",
"Version": 1.0,
"ChannelNumber": 1
},
"Channels": [
{
"Parameters": {
"Index": 1
},
"Pattern": [
{
"Event": {
"Type": "transient",
"StartTime": 0,
"Parameters": {
"Intensity": 100,
"Frequency": 31
}
}
},
{
"Event": {
"Type": "continuous",
"StartTime": 100,
"Duration": 54,
"Parameters": {
"Intensity": 38,
"Frequency": 30
}
}
}
]
}
]
}
```
This JSON file contains two attributes: **MetaData** and **Channels**.
- **MetaData** contains information about the file header. You can add the following attributes under **MetaData**:
- **Version**: version number of the file format, which is forward compatible. Currently, only version 1.0 is supported. This parameter is mandatory.
- **ChannelNumber**: number of channels for vibration. Currently, only one channel is supported, and the value is fixed at **1**. This parameter is mandatory.
- **Create**: time when the file was created. This parameter is optional.
- **Description**: additional information such as the vibration effect and creation information. This parameter is optional.
- **Channels** provides information about the vibration channel. It is a JSON array that holds information about each channel. It contains two attributes: **Parameters** and **Pattern**.
- **Parameters** provides parameters related to the channel. Under it, **Index** indicates the channel ID. The value is fixed at **1** for a single channel. This parameter is mandatory.
- **Pattern** indicates the vibration sequence. It is a JSON array. Under it, **Event** indicates a vibration event, which can be either of the following types:
- **transient**: short vibration
- **continuous**: long vibration
The table below describes the parameters under **Event**.
| Parameter| Description| Value or Value Range|
| --- | ------------------------ | ---|
| Type | Type of the vibration event. This parameter is mandatory.| **transient** or **continuous**|
| StartTime | Start time of the vibration. This parameter is mandatory.| [0, 1800 000], in ms, without overlapping|
| Duration | Duration of the vibration. This parameter is valid only when **Type** is **continuous**.| (10, 1600), in ms|
| Intensity | Intensity of the vibration. This parameter is mandatory.| [0, 100], a relative value that does not represent the actual vibration strength.|
| Frequency | Frequency of the vibration. This parameter is mandatory.| [0, 100], a relative value that does not represent the actual vibration frequency|
The following requirements must be met:
| Item| Description |
| -------- | ------------------------ |
| Number of vibration events| No more than 128|
| Length of the vibration configuration file| Not greater than 64 KB|
## How to Develop
......@@ -135,3 +212,63 @@ For details about the APIs, see [Vibrator](../reference/apis/js-apis-vibrator.md
console.error('Exception in, error:' + JSON.stringify(error));
}
```
6. Start and stop custom vibration.
```js
import vibrator from '@ohos.vibrator';
import resourceManager from '@ohos.resourceManager';
const FILE_NAME = "xxx.json";
async function openResource(fileName) {
let fileDescriptor = undefined;
let mgr = await resourceManager.getResourceManager();
await mgr.getRawFd(fileName).then(value => {
fileDescriptor = {fd: value.fd, offset: value.offset, length: value.length};
console.log('openResource success fileName: ' + fileName);
}).catch(error => {
console.log('openResource err: ' + error);
});
return fileDescriptor;
}
async function closeResource(fileName) {
let mgr = await resourceManager.getResourceManager();
await mgr.closeRawFd(fileName).then(()=> {
console.log('closeResource success fileName: ' + fileName);
}).catch(error => {
console.log('closeResource err: ' + error);
});
}
// Obtain the file descriptor of the vibration configuration file.
let rawFd = openResource(FILE_NAME);
// To use startVibration and stopVibration, you must configure the ohos.permission.VIBRATE permission.
try {
// Start custom vibration.
vibrator.startVibration({
type: "file",
hapticFd: { fd: rawFd.fd, offset: rawFd.offset, length: rawFd.length }
}, {
usage: "alarm"
}).then(() => {
console.info('startVibration success');
}, (error) => {
console.info('startVibration error');
});
// Stop vibration in all modes.
vibrator.stopVibration(function (error) {
if (error) {
console.log('error.code' + error.code + 'error.message' + error.message);
return;
}
console.log('Callback returned to indicate successful.');
})
} catch (error) {
console.info('errCode: ' + error.code + ' ,msg: ' + error.message);
}
// Close the vibration configuration file.
closeResource(FILE_NAME);
```
en/application-dev/dfx/hilog-guidelines.md
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......@@ -38,7 +38,7 @@ Log level.
| Name | Value | Description |
| ----- | ------ | ------------------------------------------------------------ |
| DEBUG | 3 | Log level used to record more detailed process information than INFO logs to help developers analyze service processes and locate faults.|
| INFO | 4 | Log level used to record key service process nodes and exceptions that occur during service running,<br>Log level used to record information about unexpected exceptions, such as network signal loss and login failure.<br>These logs should be recorded by the dominant module in the service to avoid repeated logging conducted by multiple invoked modules or low-level functions.|
| INFO | 4 | Log level used to record key service process nodes and exceptions that occur during service running as well as information about unexpected exceptions, such as network signal loss and login failure.<br>These logs should be recorded by the dominant module in the service to avoid repeated logging conducted by multiple invoked modules or low-level functions.|
| WARN | 5 | Log level used to record severe, unexpected faults that have little impact on users and can be rectified by the programs themselves or through simple operations.|
| ERROR | 6 | Log level used to record program or functional errors that affect the normal running or use of the functionality and can be fixed at a high cost, for example, by resetting data.|
| FATAL | 7 | Log level used to record program or functionality crashes that cannot be rectified.
......
en/application-dev/media/image-transformation-native.md
浏览文件 @ fd4a7143
# Image Transformation (Native)
You will learn how to use native image APIs to process images, including cropping, rotating, scaling, flipping, translating, and opacity setting.
You will learn how to use native image APIs to process images.
## How to Develop
......@@ -22,9 +22,9 @@ Open the **src/main/cpp/hello.cpp** file and add the following API mappings to t
static napi_value Init(napi_env env, napi_value exports)
{
napi_property_descriptor desc[] = {
{ "createPixelMap", nullptr, CreatePixelMap, nullptr, nullptr, nullptr, napi_default, nullptr },
{ "createAlphaPixelMap", nullptr, CreateAlphaPixelMap, nullptr, nullptr, nullptr, napi_default, nullptr },
{ "transform", nullptr, Transform, nullptr, nullptr, nullptr, napi_default, nullptr }
{ "testGetImageInfo", nullptr, TestGetImageInfo, nullptr, nullptr, nullptr, napi_default, nullptr },
{ "testAccessPixels", nullptr, TestAccessPixels, nullptr, nullptr, nullptr, napi_default, nullptr },
{ "testUnAccessPixels", nullptr, TestUnAccessPixels, nullptr, nullptr, nullptr, napi_default, nullptr },
};
napi_define_properties(env, exports, sizeof(desc) / sizeof(desc[0]), desc);
......@@ -40,159 +40,56 @@ For details about the APIs, see [Image API Reference](../reference/native-apis/i
Obtain the JS resource object from the **hello.cpp** file and convert it to a native resource object. Then you can call native APIs. The sample code is as follows:
1. Create a **PixelMap** object based on a pixel array.
1. Obtain the **PixelMap** information and store the information to the **OhosPixelMapInfo** struct.
```c++
// Create a PixelMap object.
napi_value CreatePixelMap(napi_env env, napi_callback_info info)
static napi_value TestGetImageInfo(napi_env env, napi_callback_info info)
{
napi_value udfVar = nullptr;
napi_value thisVar = nullptr;
napi_value argValue[2] = {0};
size_t argCount = 2;
void* buffer = nullptr;
size_t bufferSize = 0;
struct OhosPixelMapCreateOps createOps;
napi_value pixelmap = nullptr;
napi_get_undefined(env, &udfVar);
napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr);
if (napi_get_arraybuffer_info(env, argValue[0], &buffer, &bufferSize) != napi_ok ||
buffer == nullptr || bufferSize == 0) {
return udfVar;
}
createOps.width = 4;
createOps.height = 6;
createOps.pixelFormat = 4;
createOps.alphaType = 0;
int32_t res = OH_PixelMap_CreatePixelMap(env, createOps, (uint8_t *)buffer, bufferSize, &pixelmap);
if (res != OHOS_IMAGE_RESULT_SUCCESS || pixelmap == nullptr) {
return udfVar;
}
return pixelmap;
}
napi_value result = nullptr;
napi_get_undefined(env, &result);
// Create a PixelMap object that contains only the alpha channel.
napi_value CreateAlphaPixelMap(napi_env env, napi_callback_info info)
{
napi_value udfVar = nullptr;
napi_value thisVar = nullptr;
napi_value argValue[1] = {0};
size_t argCount = 1;
napi_value alphaPixelmap = nullptr;
napi_get_undefined(env, &udfVar);
napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr);
if (napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr) != napi_ok ||
argCount < 1 || argValue[0] == nullptr) {
return udfVar;
}
int32_t res = OH_PixelMap_CreateAlphaPixelMap(env, argValue[0], &alphaPixelmap);
if (res != OHOS_IMAGE_RESULT_SUCCESS || alphaPixelmap == nullptr) {
return udfVar;
}
return alphaPixelmap;
OHOS::Media::OhosPixelMapInfo pixelMapInfo;
OHOS::Media::OH_GetImageInfo(env, argValue[0], &pixelMapInfo);
return result;
}
```
2. Perform image transformation. For details about the operation, read the comments in the sample code below.
2. Obtain the memory address of a **PixelMap** object and lock the memory.
```c++
napi_value Transform(napi_env env, napi_callback_info info)
static napi_value TestAccessPixels(napi_env env, napi_callback_info info)
{
napi_value result = nullptr;
napi_get_undefined(env, &result);
napi_value thisVar = nullptr;
napi_value argValue[1] = {0};
size_t argCount = 1;
if (napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr) != napi_ok ||
argCount < 1 || argValue[0] == nullptr) {
return nullptr;
napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr);
void* addrPtr = nullptr;
OHOS::Media::OH_AccessPixels(env, argValue[0], &addrPtr);
return result;
}
```
3. Unlock the memory of the **PixelMap** object.
```c++
static napi_value TestUnAccessPixels(napi_env env, napi_callback_info info)
{
napi_value result = nullptr;
napi_get_undefined(env, &result);
NativePixelMap* native = OH_PixelMap_InitNativePixelMap(env, argValue[0]);
if (native == nullptr) {
return result;
}
napi_value thisVar = nullptr;
napi_value argValue[1] = {0};
size_t argCount = 1;
// Obtain image information.
struct OhosPixelMapInfo pixelmapInfo;
OH_PixelMap_GetImageInfo(native, &pixelmapInfo);
// Obtain the number of bytes per row of the PixelMap object.
int32_t rowBytes;
OH_PixelMap_GetBytesNumberPerRow(native, &rowBytes);
// Check whether the PixelMap object is editable.
int32_t editable = 0;
OH_PixelMap_GetIsEditable(native, &editable);
// Check whether the PixelMap object supports alpha channels.
int32_t supportAlpha = 0;
OH_PixelMap_IsSupportAlpha(native, &supportAlpha);
// Set an alpha channel for the PixelMap object.
int32_t alphaAble = 0;
OH_PixelMap_SetAlphaAble(native, alphaAble);
// Obtain the pixel density of the PixelMap object.
int32_t densityG;
OH_PixelMap_GetDensity(native, &densityG);
// Set the pixel density for the PixelMap object.
int32_t densityS = 100;
OH_PixelMap_SetDensity(native, densityS);
// Set the opacity for the PixelMap object.
float opacity = 0.5;
OH_PixelMap_SetOpacity(native, opacity);
// Scale the image.
// scaleX: The width of the image after scaling is 0.5 of the original width.
// scaleY: The height of the image after scaling is 0.5 of the original height.
float scaleX = 0.5;
float scaleY = 0.5;
OH_PixelMap_Scale(native, scaleX, scaleY);
// Translate the image.
// translateX: Translate the image by 50 units downwards.
// translateY: Translate the image by 50 units rightwards.
float translateX = 50;
float translateY = 50;
OH_PixelMap_Translate(native, translateX, translateY);
// Rate the image clockwise by 90°.
float angle = 90;
OH_PixelMap_Rotate(native, angle);
// Flip the image.
// flipX: whether to flip the image horizontally. The value 1 means to flip the image and 0 means the opposite.
// flipY: whether to flip the image vertically. The value 1 means to flip the image and 0 means the opposite.
int32_t flipX = 0;
int32_t flipY = 1;
OH_PixelMap_Flip(native, flipX, flipY);
// Crop the image.
// cropX: x-axis coordinate of the start point for cropping (0).
// cropY: y-axis coordinate of the start point for cropping (0).
// cropH: height after cropping (10), cropping from top to bottom.
// cropW: width after cropping (10), cropping from left to right.
int32_t cropX = 1;
int32_t cropY = 1;
int32_t cropW = 10;
int32_t cropH = 10;
OH_PixelMap_Crop(native, cropX, cropY, cropW, cropH);
uint8_t* pixelAddr = nullptr;
// Obtain the memory address of the PixelMap object and lock the memory.
OH_PixelMap_AccessPixels(native, &pixelAddr);
// Unlock the memory of the PixelMap object.
OH_PixelMap_UnAccessPixels(native);
napi_get_cb_info(env, info, &argCount, argValue, &thisVar, nullptr);
OHOS::Media::OH_UnAccessPixels(env, argValue[0]);
return result;
}
```
......@@ -205,33 +102,37 @@ Obtain the JS resource object from the **hello.cpp** file and convert it to a na
```js
import testNapi from 'libentry.so'
import image from '@ohos.multimedia.image'
import image from '@ohos.multimedia.image';
@Entry
@Component
struct Index {
@State _pixelMap: image.PixelMap = undefined;
@State message: string = 'IMAGE'
@State _PixelMap: image.PixelMap = undefined
build() {
Row() {
Column() {
Button("PixelMap")
.width(100)
.height(100)
Button(this.message)
.fontSize(50)
.fontWeight(FontWeight.Bold)
.onClick(() => {
const color = new ArrayBuffer(96);
var bufferArr = new Uint8Array(color);
for (var i = 0; i < bufferArr.length; i++) {
bufferArr[i] = 0x80;
}
this._pixelMap = testNapi.createPixelMap(color);
testNapi.transform(this._pixelMap);
let opts = { alphaType: 0, editable: true, pixelFormat: 4, scaleMode: 1, size: { height: 4, width: 6 } }
image.createPixelMap(color, opts)
.then( pixelmap => {
this._PixelMap = pixelmap;
})
Image(this._pixelMap)
.width(500)
.height(500)
.objectFit(ImageFit.Cover)
testNapi.testGetImageInfo(this._PixelMap);
console.info("Test GetImageInfo success");
testNapi.testAccessPixels(this._PixelMap);
console.info("Test AccessPixels success");
testNapi.testUnAccessPixels(this._PixelMap);
console.info("Test UnAccessPixels success");
})
}
.width('100%')
}
......
en/application-dev/napi/Readme-EN.md
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......@@ -5,5 +5,6 @@
- [Raw File Development](rawfile-guidelines.md)
- [Native Window Development](native-window-guidelines.md)
- [Using MindSpore Lite for Model Inference](mindspore-lite-guidelines.md)
- [Using MindSpore Lite for Offline Model Conversion and Inference](mindspore-lite-offline-model-guidelines.md)
- [Connecting the Neural Network Runtime to an AI Inference Framework](neural-network-runtime-guidelines.md)
- [Purgeable Memory Development](purgeable-memory-guidelines.md)
en/application-dev/napi/mindspore-lite-offline-model-guidelines.md 0 → 100644
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# Using MindSpore Lite for Offline Model Conversion and Inference
## Basic Concepts
- MindSpore Lite: a built-in AI inference engine of OpenHarmony that provides inference deployment for deep learning models.
- Neural Network Runtime (NNRt): a bridge that connects the upper-layer AI inference framework to the bottom-layer acceleration chip to implement cross-chip inference and computing of AI models.
- Offline model: a model obtained using the offline model conversion tool of the AI hardware vendor. The hardware vendor is responsible for parsing and inference of AI models.
## When to Use
The common process for MindSpore Lite AI model deployment is as follows:
- Use the MindSpore Lite model conversion tool to convert third-party models (such as ONNX and CAFFE) to `.ms` models.
- Call APIs of the MindSpore Lite inference engine to perform model inference. By specifying NNRt as the inference device, you can then use the AI hardware in the system to accelerate inference.
When MindSpore Lite + NNRt inference is used, dynamic image composition in the initial phase will introduce a certain model loading delay.
If you want to reduce the loading delay to meet the requirements of the deployment scenario, you can use offline model-based inference as an alternative. The operation procedure is as follows:
- Use the offline model conversion tool provided by the AI hardware vendor to compile an offline model in advance.
- Use the MindSpore Lite conversion tool to encapsulate the offline model as a black box into the `.ms` model.
- Pass the `.ms` model to MindSpore Lite for inference.
During inference, MindSpore Lite directly sends the offline model to the AI hardware connected to NNRt. This way, the model can be loaded without the need for online image composition, greatly reducing the model loading delay. In addition, MindSpore Lite can provide additional hardware-specific information to assist the AI hardware in model inference.
The following sections describe the offline model inference and conversion process in detail.
## Constraints
- Offline model inference can only be implemented at the NNRt backend. The AI hardware needs to connect to NNRt and supports offline model inference.
## Offline Model Conversion
### 1. Building the MindSpore Lite Release Package
Obtain the [MindSpore Lite source code](https://gitee.com/openharmony/third_party_mindspore). The source code is managed in "compressed package + patch" mode. Run the following commands to decompress the source code package and install the patch:
```bash
cd mindspore
python3 build_helper.py --in_zip_path=./mindspore-v1.8.1.zip --patch_dir=./patches/ --out_src_path=./mindspore-src
```
If the command execution is successful, the complete MindSpore Lite source code is generated in `mindspore-src/source/`.
Run the following commands to start building:
```bash
cd mindspore-src/source/
bash build.sh -I x86_64 -j 8
```
After the building is complete, you can obtain the MindSpore Lite release package from the `output/` directory in the root directory of the source code.
### 2. Writing Extended Configuration File of the Conversion Tool
The offline model comes as a black box and cannot be parsed by the conversion tool to obtain its input and output tensor information. Therefore, you need to manually configure the tensor information in the extended configuration file of the conversion tool. Based on the extended configuration, the conversion tool can then generate the `.ms` model file for encapsulating the offline model.
An example of the extended configuration is as follows:
- `[third_party_model]` in the first line is a fixed keyword that indicates the section of offline model configuration.
- The following lines exhibit the name, data type, shape, and memory format of the input and output tensors of the model respectively. Each field occupies a line and is expressed in the key-value pair format. The sequence of fields is not limited.
- Among the fields, data type and shape are mandatory, and other parameters are optional.
- Extended parameters are also provided. They are used to encapsulate custom configuration of the offline model into an `.ms` file in the the key-value pair format. The `.ms` file is passed to the AI hardware by NNRt during inference.
```text
[third_party_model]
input_names=in_0;in_1
input_dtypes=float32;float32
input_shapes=8,256,256;8,256,256,3
input_formats=NCHW;NCHW
output_names=out_0
output_dtypes=float32
output_shapes=8,64
output_formats=NCHW
extended_parameters=key_foo:value_foo;key_bar:value_bar
```
The related fields are described as follows:
- `input_names` (optional): model input name, which is in the string format. If multiple names are specified, use a semicolon (`;`) to separate them.
- `input_dtypes` (mandatory): model input data type, which is in the type format. If multiple data types are specified, use a semicolon (`;`) to separate them.
- `input_shapes` (mandatory): model input shape, which is in the integer array format. If multiple input shapes are specified, use a semicolon (`;`) to separate them.
- `input_formats` (optional): model input memory format, which is in the string format. If multiple formats are specified, use a semicolon (`;`) to separate them. The default value is `NHWC`.
- `output_names` (optional): model output name, which is in the string format. If multiple names are specified, use a semicolon (`;`) to separate them.
- `output_dtypes` (mandatory): model output data type, which is in the type format. If multiple data types are specified, use a semicolon (`;`) to separate them.
- `output_shapes` (mandatory): model output shape, which is in the integer array format. If multiple output shapes are specified, use a semicolon (`;`) to separate them.
- `output_formats` (optional): model output memory format, which is in the string format. If multiple formats are specified, use a semicolon (`;`) to separate them. The default value is `NHWC`.
- `extended_parameters` (optional): custom configuration of the inference hardware, which is in the key-value pair format. It is passed to the AI hardware through the NNRt backend during inference.
### 3. Converting an Offline Model
Decompress the MindSpore Lite release package obtained in step 1. Go to the directory where the conversion tool is located (that is, `tools/converter/converter/`), and run the following commands:
```bash
export LD_LIBRARY_PATH=${PWD}/../lib
./converter_lite --fmk=THIRDPARTY --modelFile=/path/to/your_model --configFile=/path/to/your_config --outputFile=/path/to/output_model
```
The offline model conversion is complete.
The related parameters are described as follows:
- `--fmk`: original format of the input model. `THIRDPARTY` indicates an offline model.
- `--modelFile`: path of the input model.
- `--configFile`: path of the extended configuration file. The file is used to configure offline model information.
- `--outputFile`: path of the output model. You do not need to add the file name extension. The `.ms` suffix is generated automatically.
> **NOTE**
>
> If `fmk` is set to `THIRDPARTY`, offline model conversion is performed. In this case, only the preceding four parameters and the extended configuration file take effect.
## Offline Model Inference
Offline model inference is the same as common MindSpore Lite model inference except that only NNRt devices can be added to the inference context.
For details about the MindSpore Lite model inference process, see [Using MindSpore Lite for Model Inference](./mindspore-lite-guidelines.md).
en/application-dev/napi/purgeable-memory-guidelines.md
浏览文件 @ fd4a7143
......@@ -35,33 +35,31 @@ The following steps describe how to use the native purgeable memory APIs to appl
struct ParaData{
int start;
int end;
}
};
// Declare a function for modifying the object.
bool FactorialFunc(void* data, size_t size, void* param){
bool ret = true;
int oriData = *(int*)(data);
int i = param->start;
while(i<param->end){
oriData *= i;
ParaData *pdata = (ParaData*) param;
int* oriData = (int*)data;
int i = pdata->start;
while(i<pdata->end){
*oriData *= i;
}
*data = oriData;
if(oriData < 0)
ret = false;
return ret;
}
// Declare the parameters of the extended function for modifying the object.
struct AppendParaData{
int newPara;
}
};
// Declare the extended function for modifying the object.
bool AddFunc(void* data, size_t size, void* param){
bool ret = true;
int oriData = *(int*)(data);
oriData += param->newPara;
*data = oriData;
int *oriDatap = (int*) data;
AppendParaData* apData = (AppendParaData*)param;
*oriDatap += apData->newPara;
return ret;
}
```
......@@ -74,11 +72,14 @@ The following steps describe how to use the native purgeable memory APIs to appl
struct ParaData pdata = {1,2};
// Create a PurgeableMemory object.
OH_PurgableMmory* pPurgmem = OH_PurgableMmory_Create(DATASIZE, FactorialFunc, &pdata);
OH_PurgeableMemory* pPurgmem = OH_PurgeableMemory_Create(DATASIZE, FactorialFunc, &pdata);
```
3. Perfrom a read operation on the **PurgeableMemory** object.
```c++
// Define an object type based on the service requirements.
class ReqObj;
// Begin a read operation on the object.
OH_PurgeableMemory_BeginRead(pPurgmem);
......@@ -94,8 +95,11 @@ The following steps describe how to use the native purgeable memory APIs to appl
4. Perform a write operation on the **PurgeableMemory** object.
```c++
// Define an object type based on the service requirements.
class ReqObj;
// Begin a write operation on the object.
OH_PurgeableMemory_BeginWrite(pPurgmem)
OH_PurgeableMemory_BeginWrite(pPurgmem);
// Obtain the object data.
ReqObj* pReqObj = (ReqObj*) OH_PurgeableMemory_GetContent(pPurgmem);
......
en/application-dev/reference/apis/Readme-EN.md
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......@@ -86,8 +86,10 @@
- [AppStateData](js-apis-inner-application-appStateData.md)
- [BaseContext](js-apis-inner-application-baseContext.md)
- [Context](js-apis-inner-application-context.md)
- [ContinuableInfo](js-apis-inner-application-continuableInfo.md)
- [ContinueCallback](js-apis-inner-application-continueCallback.md)
- [ContinueDeviceInfo](js-apis-inner-application-continueDeviceInfo.md)
- [ContinueMissionInfo](js-apis-inner-application-continueMissionInfo.md)
- [ErrorObserver](js-apis-inner-application-errorObserver.md)
- [ExtensionContext](js-apis-inner-application-extensionContext.md)
- [ExtensionRunningInfo](js-apis-inner-application-extensionRunningInfo.md)
......@@ -194,7 +196,6 @@
- [@ohos.router (Page Routing)](js-apis-router.md)
- [@ohos.measure (Text Measurement)](js-apis-measure.md)
- [@ohos.uiAppearance (UI Appearance)](js-apis-uiappearance.md)
- Graphics
- [@ohos.animation.windowAnimationManager (Window Animation Management)](js-apis-windowAnimationManager.md)
- [@ohos.application.WindowExtensionAbility (WindowExtensionAbility)](js-apis-application-windowExtensionAbility.md)
......@@ -207,7 +208,6 @@
- webgl
- [WebGL](js-apis-webgl.md)
- [WebGL2](js-apis-webgl2.md)
- Multimedia
- [@ohos.multimedia.audio (Audio Management)](js-apis-audio.md)
- [@ohos.multimedia.avsession (AVSession Management)](js-apis-avsession.md)
......@@ -347,6 +347,7 @@
- [@ohos.brightness (Screen Brightness)](js-apis-brightness.md)
- [@ohos.charger (Charging Type)](js-apis-charger.md)
- [@ohos.cooperate (Screen Hopping)](js-apis-devicestatus-cooperate.md)
- [@ohos.deviceAttest (Device Attestation)](js-apis-deviceAttest.md)
- [@ohos.deviceInfo (Device Information)](js-apis-device-info.md)
- [@ohos.distributedHardware.deviceManager (Device Management)](js-apis-device-manager.md)
- [@ohos.geoLocationManager (Geolocation Manager)](js-apis-geoLocationManager.md)
......@@ -356,6 +357,7 @@
- [@ohos.multimodalInput.inputEvent (Input Event)](js-apis-inputevent.md)
- [@ohos.multimodalInput.inputEventClient (Key Event Injection)](js-apis-inputeventclient.md)
- [@ohos.multimodalInput.inputMonitor (Input Monitor)](js-apis-inputmonitor.md)
- [@ohos.multimodalInput.intentionCode (Intention Code)](js-apis-intentioncode.md)
- [@ohos.multimodalInput.keyCode (Key Code)](js-apis-keycode.md)
- [@ohos.multimodalInput.keyEvent (Key Event)](js-apis-keyevent.md)
- [@ohos.multimodalInput.mouseEvent (Mouse Event)](js-apis-mouseevent.md)
......@@ -364,6 +366,7 @@
- [@ohos.multimodalInput.shortKey (Shortcut Key)](js-apis-shortKey.md)
- [@ohos.power (System Power Management)](js-apis-power.md)
- [@ohos.runningLock (Runninglock)](js-apis-runninglock.md)
- [@ohos.resourceschedule.deviceStandby (Device Standby)](js-apis-resourceschedule-deviceStandby.md)
- [@ohos.sensor (Sensor)](js-apis-sensor.md)
- [@ohos.settings (Data Item Settings)](js-apis-settings.md)
- [@ohos.stationary (Device Status Awareness Framework)](js-apis-stationary.md)
......@@ -421,7 +424,6 @@
- Test
- [@ohos.application.testRunner (TestRunner)](js-apis-application-testRunner.md)
- [@ohos.deviceAttest (Device Attestation)](js-apis-deviceAttest.md)
- [@ohos.uitest (UiTest)](js-apis-uitest.md)
- APIs No Longer Maintained
......
en/application-dev/reference/apis/js-apis-app-ability-abilityManager.md
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......@@ -388,7 +388,7 @@ abilityManager.getTopAbility().then((data) => {
acquireShareData(missionId: number, callback: AsyncCallback<{[key: string]: Object}>): void;
Acquires the shared data of the target application. This API uses an asynchronous callback to return the result. **missionId** indicates the target application's mission ID, which can be obtained by running the **hdc shell aa dump -a** command or calling the [missionManager.getMissionInfos()](js-apis-app-ability-missionManager.md#getmissioninfos) API after the target application is started. **callback** indicates the data shared by the target application through the [UIAbility.onShare()](js-apis-app-ability-uiAbility.md#onshare) lifecycle callback.
Called by a system dialog box to obtain shared data, which is set by the target UIAbility through **onShare()**. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Ability.AbilityRuntime.Core
......@@ -429,10 +429,16 @@ try {
acquireShareData(missionId: number): Promise<{[key: string]: Object}>;
Acquires the shared data of the target application. This API uses a promise to return the result. **missionId** indicates the target application's mission ID, which can be obtained by running the **hdc shell aa dump -a** command or calling the [missionManager.getMissionInfos()](js-apis-app-ability-missionManager.md#getmissioninfos) API after the target application is started. **Promise<{[key: string]: Object}>** indicates the data shared by the target application through the [UIAbility.onShare()](js-apis-app-ability-uiAbility.md#onshare) lifecycle callback.
Called by a system dialog box to obtain shared data, which is set by the target UIAbility through **onShare()**. This API uses a promise to return the result.
**System capability**: SystemCapability.Ability.AbilityRuntime.Core
**Parameters**
| Name | Type | Mandatory | Description |
| --------- | ---------------------------------------- | ---- | -------------- |
| missionId | number | Yes| Mission ID on the target application. The maximum value is 2<sup>31</sup>-1.|
**Return value**
| Type | Description |
......
en/application-dev/reference/apis/js-apis-app-form-formBindingData.md
浏览文件 @ fd4a7143
# @ohos.application.formBindingData (formBindingData)
# @ohos.app.form.formBindingData (formBindingData)
The **FormBindingData** module provides APIs for widget data binding. You can use the APIs to create a **FormBindingData** object and obtain related information.
......@@ -12,6 +12,19 @@ The **FormBindingData** module provides APIs for widget data binding. You can us
import formBindingData from '@ohos.app.form.formBindingData';
```
## ProxyData<sup>10+</sup>
Defines the subscription information about the widget update by proxy.
**System capability**: SystemCapability.Ability.Form
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| key | string | Yes| Subscriber ID of the widget update by proxy. The value is the same as that of the data publisher.|
| subscriberId | string | No| Subscription condition of the widget update by proxy. The default value is the current widget ID (specified by **formId**).|
## FormBindingData
Describes a **FormBindingData** object.
......@@ -21,7 +34,7 @@ Describes a **FormBindingData** object.
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| data | Object | Yes| Data to be displayed on the JS widget. The value can be an object containing multiple key-value pairs or a string in JSON format.|
| proxies<sup>10+</sup> | Array<[ProxyData](#proxydata)> | No| Subscription information of the widget update by proxy. The default value is an empty array.|
## createFormBindingData
......@@ -62,3 +75,14 @@ try {
console.error(`catch error, code: ${error.code}, message: ${error.message}`);
}
```
## ProxyData
Defines the widget proxy data.
**System capability**: SystemCapability.Ability.Form
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| key | string | Yes| Key of the proxy. The value depends on the data publisher.|
| subscriberId | string | No| Subscriber ID. The value depends on the data publisher. The default value is the current widget ID.|
en/application-dev/reference/apis/js-apis-arraylist.md
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......@@ -379,15 +379,15 @@ Replaces all elements in this container with new elements, and returns the new o
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for the replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| arrlist | ArrayList&lt;T&gt; | No| Instance that invokes the **replaceAllElements** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| arrlist | ArrayList&lt;T&gt; | No| Instance that calls the **replaceAllElements** API. The default value is this instance.|
**Error codes**
......@@ -425,15 +425,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for the replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| arrlist | ArrayList&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is 0.|
| arrlist | ArrayList&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......@@ -468,7 +468,7 @@ Sorts elements in this container.
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| comparator | function | No| Callback invoked for sorting.|
| comparator | function | No| Callback invoked for sorting. The default value is the callback function for sorting elements in ascending order.|
comparator
......
en/application-dev/reference/apis/js-apis-buffer.md
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......@@ -204,7 +204,7 @@ Concatenates an array of **Buffer** instances of the specified length into a new
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| list | Buffer[]&nbsp;\|&nbsp;Uint8Array[] | Yes| Array of instances to concatenate.|
| totalLength | number | No| Total length of bytes to be copied.|
| totalLength | number | No| Total length of bytes to be copied. The default value is **0**.|
**Return value**
......@@ -1915,7 +1915,7 @@ Converts the data at the specified position in this **Buffer** instance into a s
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| encoding | string | No| Encoding format of the string. The default value is **utf-8**.|
| encoding | string | No| Encoding format (valid only when **value** is a string). The default value is **utf-8**.|
| start | number | No| Offset to the start position of the data to convert. The default value is **0**.|
| end | number | No| Offset to the end position of the data to convert. The default value is the length of this **Buffer** instance.|
......
en/application-dev/reference/apis/js-apis-deque.md
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......@@ -242,15 +242,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| deque | Deque&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| deque | Deque&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-hashmap.md
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......@@ -459,14 +459,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | V | No| Value of the element that is currently traversed.|
| key | K | No| Key of the element that is currently traversed.|
| map | HashMap<K, V> | No| Instance that invokes the **forEach** method.|
| value | V | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key | K | No| Key of the element that is currently traversed. The default value is the key of the first key-value pair.|
| map | HashMap<K, V> | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-hashset.md
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......@@ -282,14 +282,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | No| Value of the element that is currently traversed.|
| key | T | No| Key of the element that is currently traversed (same as **value**).|
| set | HashSet&lt;T&gt; | No| Instance that invokes the **forEach** API.|
| value | T | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key | T | No| Key of the element that is currently traversed (same as **value**). The default value is the key of the first key-value pair.|
| set | HashSet&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-lightweightmap.md
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......@@ -724,14 +724,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | V | No| Value of the element that is currently traversed.|
| key | K | No| Key of the element that is currently traversed.|
| map | LightWeightMap<K, V> | No| Instance that invokes the **forEach** method.|
| value | V | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key | K | No| Key of the element that is currently traversed. The default value is the key of the first key-value pair.|
| map | LightWeightMap<K, V> | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-lightweightset.md
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......@@ -588,14 +588,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | No| Value of the element that is currently traversed.|
| key| T | No| Key of the element that is currently traversed (same as **value**).|
| set | LightWeightSet&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| value | T | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key| T | No| Key of the element that is currently traversed (same as **value**). The default value is the key of the first key-value pair.|
| set | LightWeightSet&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-linkedlist.md
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......@@ -607,15 +607,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| LinkedList | LinkedList&lt;T&gt; | No| Instance that invokes the **forEach** API.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| LinkedList | LinkedList&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-list.md
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......@@ -427,15 +427,15 @@ Replaces all elements in this container with new elements, and returns the new o
| Name| Value Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for the replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Value Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| list | List&lt;T&gt; | No| Instance that invokes the **replaceAllElements** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| list | List&lt;T&gt; | No| Instance that calls the **replaceAllElements** API. The default value is this instance.|
**Error codes**
......@@ -473,15 +473,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Value Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for the replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Value Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| List | List&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| List | List&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
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| Name| Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type | Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Key of the element that is currently traversed.|
| PlainArray | PlainArray&lt;T&gt;| No| Instance that invokes the **forEach** API.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| PlainArray | PlainArray&lt;T&gt;| No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
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en/application-dev/reference/apis/js-apis-queue.md
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| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| Queue | Queue&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| Queue | Queue&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
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en/application-dev/reference/apis/js-apis-reminderAgent.md
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## reminderAgent.removeNotificationSlot<sup>(deprecated)</sup>
removeNotificationSlot(slotType: notification.SlotType, callback: AsyncCallback<void>): void
removeNotificationSlot(slotType: notification.SlotType, callback: AsyncCallback\<void>): void
Removes a notification slot of a specified type. This API uses an asynchronous callback to return the result.
......@@ -401,7 +401,7 @@ reminderAgent.removeNotificationSlot(notification.SlotType.CONTENT_INFORMATION,
## reminderAgent.removeNotificationSlot<sup>(deprecated)</sup>
removeNotificationSlot(slotType: notification.SlotType): Promise<void>
removeNotificationSlot(slotType: notification.SlotType): Promise\<void>
Removes a notification slot of a specified type. This API uses a promise to return the result.
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| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| reminderType | [ReminderType](#remindertype) | Yes| Type of the reminder.|
| actionButton<sup>10+</sup> | [ActionButton](#actionbutton) | No| Button displayed for the reminder in the notification panel. For common applications, a maximum of two buttons are supported. For system applications, a maximum of two buttons are supported in API version 9, and a maximum of three buttons are supported in API version 10 and later versions.|
| actionButton<sup></sup> | [ActionButton](#actionbutton) | No| Buttons displayed for the reminder in the notification panel.<br>- For common applications, a maximum of two buttons are supported.<br>- For system applications, a maximum of two buttons are supported in API version 9, and a maximum of three buttons are supported in API version 10 and later versions.|
| wantAgent | [WantAgent](#wantagent) | No| Information about the ability that is redirected to when the reminder is clicked.|
| maxScreenWantAgent | [MaxScreenWantAgent](#maxscreenwantagent) | No| Information about the ability that is automatically started when the reminder arrives. If the device is in use, a notification will be displayed.|
| ringDuration | number | No| Ringing duration, in seconds. The default value is **1**.|
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# @ohos.resourceschedule.deviceStandby (Device Standby)
A device enters standby mode if it is unused for a long period of time or after the Power button is pressed. The standby mode prolongs the battery life without affecting the use of applications. The **deviceStandby** module provides APIs for you to check whether a device is in standby mode and request or cancel standby resource control for an application.
> **NOTE**
>
> The initial APIs of this module are supported since API version 10. Newly added APIs will be marked with a superscript to indicate their earliest API version.
## Modules to Import
```js
import deviceStandby from '@ohos.resourceschedule.deviceStandby';
```
## deviceStandby.isDeviceInStandby
isDeviceInStandby(callback: AsyncCallback&lt;boolean&gt;): void;
Checks whether the device is in standby mode. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ------------------------------ |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the device is standby mode.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
try{
deviceStandby.isDeviceInStandby((err, res) => {
if (err) {
console.log('DEVICE_STANDBY isDeviceInStandby callback failed. code is: ' + err.code + ',message is: ' + err.message);
} else {
console.log('DEVICE_STANDBY isDeviceInStandby callback succeeded, result: ' + JSON.stringify(res));
}
});
} catch(error) {
console.log('DEVICE_STANDBY isDeviceInStandby throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## deviceStandby.isDeviceInStandby
isDeviceInStandby(): Promise&lt;boolean&gt;
Checks whether the device is in standby mode. This API uses a promise to return the result.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**Return value**
| Type | Description |
| --------------------- | ---------------------------------------- |
| Promise&lt;boolean&gt; | Promise used to return whether the device is in standby mode.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
try{
deviceStandby.isDeviceInStandby().then( res => {
console.log('DEVICE_STANDBY isDeviceInStandby promise succeeded, result: ' + JSON.stringify(res));
}).catch( err => {
console.log('DEVICE_STANDBY isDeviceInStandby promise failed. code is: ' + err.code + ',message is: ' + err.message);
});
} catch (error) {
console.log('DEVICE_STANDBY isDeviceInStandby throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## deviceStandby.getExemptedApps
getExemptedApps(resourceTypes: number, callback: AsyncCallback<Array&lt;ExemptedAppInfo&gt;>): void;
Obtains the list of applications that can still use resources of the specified types when the device is in standby mode. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ------------------------------ |
| [ResourceTypes](#resourcetype)|number | Yes | Types of resources that can be used.|
| callback | AsyncCallback<Array&lt;[ExemptedAppInfo](#exemptedappinfo)&gt;> | Yes |Callback used to return the exempted application information.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
try{
deviceStandby.getExemptedApps(resourceTypes, (err, res) => {
if (err) {
console.log('DEVICE_STANDBY getExemptedApps callback failed. code is: ' + err.code + ',message is: ' + err.message);
} else {
console.log('DEVICE_STANDBY getExemptedApps callback success.');
for (let i = 0; i < res.length; i++) {
console.log('DEVICE_STANDBY getExemptedApps callback result ' + JSON.stringify(res[i]));
}
}
});
} catch (error) {
console.log('DEVICE_STANDBY getExemptedApps throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## deviceStandby.getExemptedApps
getExemptedApps(resourceTypes: number): Promise<Array&lt;ExemptedAppInfo&gt;>;
Obtains the list of applications that can still use resources of the specified type when the device is in standby mode. This API uses a promise to return the result.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ------------------------------ |
| [ResourceTypes](#resourcetype)|number | Yes |Types of resources that can be used.|
**Return value**
| Type | Description |
| --------------------- | ---------------------------------------- |
| Promise<Array&lt;[ExemptedAppInfo](#exemptedappinfo)&gt;> | Promise used to return the exempted application information.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 201 | Permission denied. |
| 202 | Not System App. |
| 401 | Parameter error. |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
try{
deviceStandby.getExemptedApps(resourceTypes).then( res => {
console.log('DEVICE_STANDBY getExemptedApps promise success.');
for (let i = 0; i < res.length; i++) {
console.log('DEVICE_STANDBY getExemptedApps promise result ' + JSON.stringify(res[i]));
}
}).catch( err => {
console.log('DEVICE_STANDBY getExemptedApps promise failed. code is: ' + err.code + ',message is: ' + err.message);
});
} catch (error) {
console.log('DEVICE_STANDBY getExemptedApps throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## deviceStandby.requestExemptionResource
requestExemptionResource(request: ResourceRequest): void;
Requests exemption, so that the application can use restricted resources when the device is in standby mode.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby.Exemption
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ------------------------------ |
| request |[ResourceRequest](#resourcerequest)| Yes | Request body.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
let resRequest = {
resourceTypes: 1,
uid:10003,
name:"com.example.app",
duration:10,
reason:"apply",
};
// Promise mode
try{
deviceStandby.requestExemptionResource(resRequest).then( () => {
console.log('DEVICE_STANDBY requestExemptionResource promise succeeded.');
}).catch( err => {
console.log('DEVICE_STANDBY requestExemptionResource promise failed. code is: ' + err.code + ',message is: ' + err.message);
});
} catch (error) {
console.log('DEVICE_STANDBY requestExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message);
}
// Asynchronous callback mode
try{
deviceStandby.requestExemptionResource(resRequest, (err) => {
if (err) {
console.log('DEVICE_STANDBY requestExemptionResource callback failed. code is: ' + err.code + ',message is: ' + err.message);
} else {
console.log('DEVICE_STANDBY requestExemptionResource callback succeeded.');
}
});
} catch (error) {
console.log('DEVICE_STANDBY requestExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## deviceStandby.releaseExemptionResource
releaseExemptionResource(request: ResourceRequest): void;
Cancels exemption for the application.
**System capability**: SystemCapability.ResourceSchedule.DeviceStandby.Exemption
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
**Parameters**
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ------------------------------ |
| request |[ResourceRequest](#resourcerequest)| Yes | Request body.|
**Error codes**
For details about the error codes, see [Background Task Management Error Codes](../errorcodes/errorcode-backgroundTaskMgr.md).
| ID | Error Message |
| ---- | --------------------- |
| 9800001 | Memory operation failed. |
| 9800002 | Parcel operation failed. |
| 9800003 | Inner transact failed. |
| 9800004 | System service operation failed. |
| 18700001 | Caller information verification failed. |
**Example**
```js
let resRequest = {
resourceTypes: 1,
uid:10003,
name:"com.demo.app",
duration:10,
reason:"unapply",
};
// Promise mode
try{
deviceStandby.releaseExemptionResource(resRequest).then( () => {
console.log('DEVICE_STANDBY releaseExemptionResource promise succeeded.');
}).catch( err => {
console.log('DEVICE_STANDBY releaseExemptionResource promise failed. code is: ' + err.code + ',message is: ' + err.message);
});
} catch (error) {
console.log('DEVICE_STANDBY releaseExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message);
}
// Asynchronous callback mode
try{
deviceStandby.releaseExemptionResource(resRequest, (err) => {
if (err) {
console.log('DEVICE_STANDBY releaseExemptionResource callback failed. code is: ' + err.code + ',message is: ' + err.message);
} else {
console.log('DEVICE_STANDBY releaseExemptionResource callback succeeded.');
}
});
} catch (error) {
console.log('DEVICE_STANDBY releaseExemptionResource throw error, code is: ' + error.code + ',message is: ' + error.message);
}
```
## ResourceType
Enumerates the types of resources that can be used by exempted applications.
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
|Name |Value |Description|
| ------------ | ------------ |--------------|
|NETWORK |1 |Network access resource.|
|RUNNING_LOCK |2 |CPU running lock resource.|
|TIMER |4 | Timer task resource.|
|WORK_SCHEDULER |8 | Work task resource.|
|AUTO_SYNC |16 | Automatic synchronization resource.|
|PUSH |32 | Push kit resource.|
|FREEZE |64 | Freezing application resource.|
## ExemptedAppInfo
Defines the information about an exempted application.
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
|Name |Type | Mandatory |Description |
| ------------ | ------------ |------------ | ------------ |
|[resourceTypes](#resourcetype) | number | Yes |Types of resources that can be used. |
|name |string | Yes | Name of the application. |
|duration | number | Yes | Exemption duration.|
## ResourceRequest
Defines the message used to request to be an exempted application.
**Required permissions**: ohos.permission.DEVICE_STANDBY_EXEMPTION
**System API**: This is a system API.
|Name |Type | Mandatory |Description |
| ------------ | ------------ |------------| ------------ |
|[resourceTypes](#resourcetype) | number | Yes |Types of resources that can be used. |
|uid | number | Yes |UID of the application. |
|name |string | Yes | Name of the application. |
|duration | number | Yes | Exemption duration.|
|reason |string | Yes | Reason for the request. |
en/application-dev/reference/apis/js-apis-screen-lock.md
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......@@ -220,7 +220,7 @@ screenlock.lock().then((data) => {
onSystemEvent(callback: Callback&lt;SystemEvent&gt;): boolean
Registers a callback for system events related to screen locking. This API can be called only by system screen lock applications.
Registers a callback for system events related to screen locking. This API can be called only by screen lock applications.
**System capability**: SystemCapability.MiscServices.ScreenLock
......@@ -264,7 +264,7 @@ try {
sendScreenLockEvent(event: String, parameter: number, callback: AsyncCallback&lt;boolean&gt;): void
Sends an event to the screen lock service. This API uses an asynchronous callback to return the result.
Sends an event to the screen lock service. This API can be called only by screen lock applications. It uses an asynchronous callback to return the result.
**System capability**: SystemCapability.MiscServices.ScreenLock
......@@ -304,7 +304,7 @@ screenlock.sendScreenLockEvent('unlockScreenResult', 0, (err, result) => {
sendScreenLockEvent(event: String, parameter: number): Promise&lt;boolean&gt;
Sends an event to the screen lock service. This API uses a promise to return the result.
Sends an event to the screen lock service. This API can be called only by screen lock applications. It uses a promise to return the result.
**System capability**: SystemCapability.MiscServices.ScreenLock
......
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......@@ -1766,7 +1766,7 @@ promise.then(() => {
setExtraOptions(options: TCPExtraOptions, callback: AsyncCallback\<void\>): void
Sets other properties of the TCPSocket connection after successful binding of the local IP address and port number of the TLSSocket connection. This API uses an asynchronous callback to return the result.
Sets other properties of the TCPSocket connection after successful binding of the local IP address and port number of the connection. This API uses an asynchronous callback to return the result.
**System capability**: SystemCapability.Communication.NetStack
......@@ -1818,7 +1818,7 @@ tls.setExtraOptions({
setExtraOptions(options: TCPExtraOptions): Promise\<void\>
Sets other properties of the TCPSocket connection after successful binding of the local IP address and port number of the TLSSocket connection. This API uses a promise to return the result.
Sets other properties of the TCPSocket connection after successful binding of the local IP address and port number of the connection. This API uses a promise to return the result.
**System capability**: SystemCapability.Communication.NetStack
......
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......@@ -214,15 +214,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| stack | Stack&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| stack | Stack&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
......
en/application-dev/reference/apis/js-apis-stationary.md
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......@@ -123,7 +123,7 @@ Unsubscribes from the device status.
| -------------------- | -------------------------------------------------- | ---- | ---------------------------- |
| activity | [ActivityType](#activitytype) | Yes | Device status type. |
| event | [ActivityEvent](#activityevent) | Yes | Event type. |
| callback | Callback<[ActivityResponse](#activityresponse)\> | No | Callback used to receive reported data. If this parameter is not passed, all callbacks associated with the specified event in the process will be unregistered. |
| callback | Callback:\<[ActivityResponse](#activityresponse)> | No | Callback used to receive reported data, If the callback parameter is not passed or the type passed is undefined, all callbacks associated with the specified event in the process will be unregistered. |
**Example**
......
en/application-dev/reference/apis/js-apis-system-battery.md
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......@@ -21,7 +21,7 @@ getStatus(options?: GetStatusOptions): void;
Obtains the current charging state and battery level.
**System capability**: SystemCapability.PowerManager.BatteryManager.Core
**System capability**: SystemCapability.PowerManager.BatteryManager.Lite
**Parameters**
......@@ -46,7 +46,7 @@ battery.getStatus({
Object that contains the API calling result.
**System capability**: SystemCapability.PowerManager.BatteryManager.Core
**System capability**: SystemCapability.PowerManager.BatteryManager.Lite
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------------- | ---- | ------------------------------------------------------------ |
......@@ -58,7 +58,7 @@ Object that contains the API calling result.
Defines a response that returns the charging status and remaining power of the device.
**System capability**: SystemCapability.PowerManager.BatteryManager.Core
**System capability**: SystemCapability.PowerManager.BatteryManager.Lite
| Name| Type| Readable| Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
......
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......@@ -22,7 +22,7 @@ getValue(options?: GetBrightnessOptions): void
Obtains the current screen brightness.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
**Parameters**
......@@ -50,7 +50,7 @@ setValue(options?: SetBrightnessOptions): void
Sets the screen brightness.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
**Parameters**
......@@ -79,7 +79,7 @@ getMode(options?: GetBrightnessModeOptions): void
Obtains the screen brightness adjustment mode.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
**Parameters**
......@@ -107,7 +107,7 @@ setMode(options?: SetBrightnessModeOptions): void
Sets the screen brightness adjustment mode.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
**Parameters**
| Name| Type| Mandatory| Description|
......@@ -137,7 +137,7 @@ setKeepScreenOn(options?: SetKeepScreenOnOptions): void
Sets whether to always keep the screen on. Call this API in **onShow()**.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
**Parameters**
......@@ -162,7 +162,7 @@ Sets whether to always keep the screen on. Call this API in **onShow()**.
Defines the options for obtaining the screen brightness.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------------------- | ---- | ------------------------------------------------------------ |
......@@ -174,7 +174,7 @@ Defines the options for obtaining the screen brightness.
Defines the options for setting the screen brightness.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------ | ---- | ------------------------------------------------------------ |
......@@ -187,7 +187,7 @@ Defines the options for setting the screen brightness.
Defines a response that returns the screen brightness.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name| Type| Readable| Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
......@@ -197,7 +197,7 @@ Defines a response that returns the screen brightness.
Defines the options for obtaining the screen brightness mode.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------------------------------ | ---- | ------------------------------------------------------------ |
......@@ -209,7 +209,7 @@ Defines the options for obtaining the screen brightness mode.
Defines the options for setting the screen brightness mode.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------ | ---- | ------------------------------------------------------ |
......@@ -222,7 +222,7 @@ Defines the options for setting the screen brightness mode.
Defines a response that returns the screen brightness mode.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name| Type| Readable| Writable| Description|
| -------- | -------- | -------- | -------- | -------- |
......@@ -232,7 +232,7 @@ Defines a response that returns the screen brightness mode.
Defines the options for setting the screen to be steady on.
**System capability**: SystemCapability.PowerManager.DisplayPowerManager
**System capability**: SystemCapability.PowerManager.DisplayPowerManager.Lite
| Name | Type | Mandatory| Description |
| ------------ | ------------------------------------ | ---- | ------------------------------------------------------ |
......
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......@@ -48,7 +48,7 @@ A constructor used to create a **TreeMap** instance.
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| comparator | function | No| Custom comparator.|
| comparator | function | No| Custom comparator. The default value is **hole** (a blank placeholder), indicating that no comparator. is provided.|
**Error codes**
......@@ -611,14 +611,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | V | No| Value of the element that is currently traversed.|
| key | K | No| Key of the element that is currently traversed.|
| map | TreeMap<K, V> | No| Instance that invokes the **forEach** method.|
| value | V | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key | K | No| Key of the element that is currently traversed. The default value is the key of the first key-value pair.|
| map | TreeMap<K, V> | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
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| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| comparator | function | No| Custom comparator.|
| comparator | function | No| Custom comparator. The default value is **hole** (a blank placeholder), indicating that no comparator. is provided.|
**Error codes**
......@@ -484,14 +484,14 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked to traverse the elements in the container.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | No| Value of the element that is currently traversed.|
| key | T | No| Key of the element that is currently traversed.|
| set | TreeSet&lt;T&gt; | No| Instance that invokes the **forEach** method.|
| value | T | No| Value of the element that is currently traversed. The default value is the value of the first key-value pair.|
| key | T | No| Key of the element that is currently traversed. The default value is the key of the first key-value pair.|
| set | TreeSet&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Error codes**
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......@@ -586,7 +586,7 @@ result = textEncoder.encodeInto("\uD800¥¥");
### encodeIntoUint8Array<sup>9+</sup>
encodeIntoUint8Array(input: string, dest: Uint8Array, ): { read: number; written: number }
encodeIntoUint8Array(input: string, dest: Uint8Array): { read: number; written: number }
Stores the UTF-8 encoded text.
......@@ -617,7 +617,7 @@ result = that.encodeIntoUint8Array('abcd', dest)
### encodeInto<sup>(deprecated)</sup>
encodeInto(input: string, dest: Uint8Array, ): { read: number; written: number }
encodeInto(input: string, dest: Uint8Array): { read: number; written: number }
Stores the UTF-8 encoded text.
......@@ -1100,7 +1100,7 @@ A constructor used to create a **LruCache** instance. The default capacity of th
| Name | Type | Mandatory| Description |
| -------- | ------ | ---- | ---------------------------- |
| capacity | number | No | Capacity of the **LruCache** to create.|
| capacity | number | No | Capacity of the **LruCache** to create. The default value is **64**.|
**Example**
......@@ -3400,7 +3400,7 @@ A constructor used to create a **LruBuffer** instance. The default capacity of t
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| capacity | number | No| Capacity of the **LruBuffer** to create.|
| capacity | number | No| Capacity of the **LruBuffer** to create. The default value is **64**.|
**Example**
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| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| vector | Vector&lt;T&gt; | No| Instance that invokes the **replaceAllElements** API.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| vector | Vector&lt;T&gt; | No| Instance that calls the **replaceAllElements** API. The default value is this instance.|
**Example**
......@@ -342,15 +342,15 @@ Uses a callback to traverse the elements in this container and obtain their posi
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callbackFn | function | Yes| Callback invoked for replacement.|
| thisArg | Object | No| Value to use when the callback is invoked.|
| thisArg | Object | No| Value of **this** to use when **callbackFn** is invoked. The default value is this instance.|
callbackfn
callbackFn
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| value | T | Yes| Value of the element that is currently traversed.|
| index | number | No| Position index of the element that is currently traversed.|
| vector | Vector&lt;T&gt; | No| Instance that invokes the **forEach** API.|
| index | number | No| Position index of the element that is currently traversed. The default value is **0**.|
| vector | Vector&lt;T&gt; | No| Instance that calls the **forEach** API. The default value is this instance.|
**Example**
......@@ -378,7 +378,7 @@ Sorts elements in this container.
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| comparator | function | No| Callback invoked for sorting.|
| comparator | function | No| Callback invoked for sorting. The default value is this instance.|
comparator
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......@@ -460,8 +460,9 @@ Describes the vibration effect.
| Type | Description |
| -------------------------------- | ------------------------------ |
| [VibrateTime](#vibratetime9) | Triggers vibration with the specified duration. This API uses a promise to return the result.|
| [VibrateTime](#vibratetime9) | Vibration with the specified duration.|
| [VibratePreset](#vibratepreset9) | Vibration with a preset effect.|
| [VibrateFromFile<sup>10+</sup>](#vibratefromfile10) | Vibration according to a custom vibration configuration file.|
## VibrateTime<sup>9+</sup>
......@@ -469,10 +470,10 @@ Describes the vibration with the specified duration.
**System capability**: SystemCapability.Sensors.MiscDevice
| Name | Value| Description |
| -------- | ------ | ------------------------------ |
| type | "time" | Vibration with the specified duration.|
| duration | - | Vibration duration, in ms. |
| Name | Type | Mandatory| Description |
| -------- | ------ | ----- | ------------------------------ |
| type | string | Yes | The value **time** means vibration with the specified duration.|
| duration | number | Yes | Vibration duration, in ms. |
## VibratePreset<sup>9+</sup>
......@@ -480,11 +481,34 @@ Describes the vibration with a preset effect.
**System capability**: SystemCapability.Sensors.MiscDevice
| Name | Value | Description |
| -------- | -------- | ------------------------------ |
| type | "preset" | Vibration with the specified effect.|
| effectId | - | Preset vibration effect ID. |
| count | - | Number of vibrations to repeat. |
| Name | Type | Mandatory| Description |
| -------- | -------- | ---- |------------------------------ |
| type | string | Yes | The value **preset** means vibration with the specified effect.|
| effectId | string | Yes | Preset vibration effect ID. |
| count | number | Yes | Number of vibrations to repeat. |
## VibrateFromFile<sup>10+</sup>
Describes the custom vibration type, which is supported only by certain devices.
**System capability**: SystemCapability.Sensors.MiscDevice
| Name | Type | Mandatory| Description |
| -------- | -------- | ---- | ------------------------------ |
| type | string | Yes | The value **file** means vibration according to a vibration configuration file.|
| hapticFd | [HapticFileDescriptor](#hapticfiledescriptor10) | Yes| File descriptor (FD) of the vibration configuration file.|
## HapticFileDescriptor<sup>10+</sup>
Describes the FD of a custom vibration configuration file. Ensure that the file is available, and the parameters in it can be obtained from the sandbox path through the [file management API](js-apis-file-fs.md#fsopen) or from the HAP resource through the [resource management API](js-apis-resource-manager.md#getrawfd9). The use case is as follows: The system triggers vibration according to the sequence set in a configuration file, based on the specified offset and length. For details about the storage format of the vibration sequence, see [Custom Vibration Format](../../device/vibrator-guidelines.md#custom-vibration-format).
**System capability**: SystemCapability.Sensors.MiscDevice
| Name | Type | Mandatory | Description |
| -------- | -------- |--------| ------------------------------|
| fd | number | Yes | FD of the custom vibration configuration file. |
| offset | number | No | Offset from the start position of the file, in bytes. The default value is the start position of the file, and the value cannot exceed the valid range of the file.|
| length | number | No | Resource length, in bytes. The default value is the length from the offset position to the end of the file, and the value cannot exceed the valid range of the file.|
## VibrateAttribute<sup>9+</sup>
......@@ -492,10 +516,10 @@ Describes the vibration attribute.
**System capability**: SystemCapability.Sensors.MiscDevice
| Name | Value| Description |
| ----- | ------ | -------------- |
| id | 0 | Vibrator ID. |
| usage | - | Vibration scenario.|
| Name | Type| Mandatory| Description |
| ----- | ------ | ---- | -------------- |
| id | number | No| Vibrator ID. The default value is 0. |
| usage | [Usage](#usage9) | Yes| Vibration scenario.|
## Usage<sup>9+</sup>
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en/application-dev/reference/apis/js-apis-xml.md
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......@@ -381,6 +381,7 @@ Creates and returns an **XmlPullParser** object.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<!DOCTYPE note [\n<!ENTITY foo "baa">]>' +
......@@ -432,6 +433,7 @@ Parses XML information.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -499,6 +501,7 @@ Obtains the column line number, starting from 1.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -542,6 +545,7 @@ Obtains the depth of this element.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -588,6 +592,7 @@ Obtains the current line number, starting from 1.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -631,6 +636,7 @@ Obtains the name of this element.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -673,6 +679,7 @@ Obtains the namespace of this element.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -715,6 +722,7 @@ Obtains the prefix of this element.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -758,6 +766,7 @@ Obtains the text of the current event.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -800,6 +809,7 @@ Checks whether the current element is empty.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -842,6 +852,7 @@ Checks whether the current text event contains only whitespace characters.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
......@@ -883,6 +894,7 @@ Obtains the number of attributes for the current start tag.
**Example**
```js
import util from '@ohos.util';
let strXml =
'<?xml version="1.0" encoding="utf-8"?>' +
'<note importance="high" logged="true">' +
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......@@ -26,7 +26,7 @@ In addition to the [universal attributes](ts-universal-attributes-size.md), the
| ----------- | ---------- | ------------------ |
| vertical | boolean | Whether a vertical divider is used. **false**: A horizontal divider is used.<br>**true**: A vertical divider is used.<br>Default value: **false**<br>Since API version 9, this API is supported in ArkTS widgets.|
| color | [ResourceColor](ts-types.md#resourcecolor) | Color of the divider.<br>Default value: **'\#33182431'**<br>Since API version 9, this API is supported in ArkTS widgets.|
| strokeWidth | number \| string | Width of the divider.<br>Default value: **1**<br>Unit: vp<br>Since API version 9, this API is supported in ArkTS widgets.<br>**NOTE**<br>This attribute cannot be set to a percentage. The priority of this attribute is lower than that of the universal attribute [height](ts-universal-attributes-size.md). If the value of this attribute is greater than that of the universal attribute, cropping is performed based on the universal attribute settings.|
| strokeWidth | number \| string | Width of the divider.<br>Default value: **1px**<br>Unit: vp<br>Since API version 9, this API is supported in ArkTS widgets.<br>**NOTE**<br>This attribute cannot be set to a percentage. The priority of this attribute is lower than that of the universal attribute [height](ts-universal-attributes-size.md). If the value of this attribute is greater than that of the universal attribute, cropping is performed based on the universal attribute settings.|
| lineCap | [LineCapStyle](ts-appendix-enums.md#linecapstyle) | Cap style of the divider.<br>Default value: **LineCapStyle.Butt**<br>Since API version 9, this API is supported in ArkTS widgets.|
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......@@ -7,6 +7,7 @@
- [Drawing](_drawing.md)
- [Image](image.md)
- [Rawfile](rawfile.md)
- [RDB](_r_d_b.md)
- [MindSpore](_mind_spore.md)
- [NeuralNeworkRuntime](_neural_nework_runtime.md)
- [AudioDecoder](_audio_decoder.md)
......@@ -58,6 +59,12 @@
- [native_huks_api.h](native__huks__api_8h.md)
- [native_huks_param.h](native__huks__param_8h.md)
- [native_huks_type.h](native__huks__type_8h.md)
- [oh_cursor.h](oh__cursor_8h.md)
- [oh_predicates.h](oh__predicates_8h.md)
- [oh_value_object.h](oh__value__object_8h.md)
- [oh_values_bucket.h](oh__values__bucket_8h.md)
- [relational_store_error_code.h](relational__store__error__code_8h.md)
- [relational_store.h](relational__store_8h.md)
- [syscap_ndk.h](syscap__ndk_8h.md)
- [purgeable_memory.h](purgeable__memory_8h.md)
- Structs
......@@ -95,3 +102,9 @@
- [OH_Huks_ParamSet](_o_h___huks___param_set.md)
- [OH_Huks_PubKeyInfo](_o_h___huks___pub_key_info.md)
- [OH_Huks_Result](_o_h___huks___result.md)
- [OH_Cursor](_o_h___cursor.md)
- [OH_Predicates](_o_h___predicates.md)
- [OH_Rdb_Config](_o_h___rdb___config.md)
- [OH_Rdb_Store](_o_h___rdb___store.md)
- [OH_VBucket](_o_h___v_bucket.md)
- [OH_VObject](_o_h___v_object.md)
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# OH_Cursor
## Overview
Defines a result set.
It provides APIs to access the result set obtained by querying the RDB store.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [id](_r_d_b.md) | Unique identifier of the **OH_Cursor** struct.|
| [getColumnCount](_r_d_b.md#getcolumncount) | Pointer to the function used to obtain the number of columns in the result set.|
| [getColumnType](_r_d_b.md#getcolumntype) | Pointer to the function used to obtain the column type based on the specified column index.|
| [getColumnIndex](_r_d_b.md#getcolumnindex) | Pointer to the function used to obtain the column index based on the specified column name.|
| [getColumnName](_r_d_b.md#getcolumnname) | Pointer to the function used to obtain the column name based on the specified column index.|
| [getRowCount](_r_d_b.md#getrowcount) | Pointer to the function used to obtain the number of rows in the result set.|
| [goToNextRow](_r_d_b.md#gotonextrow) | Pointer to the function used to go to the next row of the result set.|
| [getSize](_r_d_b.md#getsize) | Pointer to the function used to obtain information about the memory required when the column data type in the result set is **BLOB** or **TEXT**.|
| [getText](_r_d_b.md#gettext) | Pointer to the function used to obtain the value in the form of a string based on the specified column and the current row.|
| [getInt64](_r_d_b.md#getint64) | Pointer to the function used to obtain the value of the int64_t type based on the specified column and the current row.|
| [getReal](_r_d_b.md#getreal) | Pointer to the function used to obtain the value of the double type based on the specified column and the current row.|
| [getBlob](_r_d_b.md#getblob) | Pointer to the function used to obtain the value in the form of a byte array based on the specified column and the current row.|
| [isNull](_r_d_b.md#isnull-12) | Pointer to the function used to check whether the value in the specified column is null.|
| [close](_r_d_b.md#close) | Pointer to the function used to close a result set.|
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# OH_Predicates
## Overview
Defines the predicates.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [id](_r_d_b.md#id-14) | Unique identifier of the **OH_Predicates** struct.|
| [equalTo](_r_d_b.md#equalto) | Pointer to the function used to set a predicates object to match the field whose value is equal to the specified value.|
| [notEqualTo](_r_d_b.md#notequalto) | Pointer to the function used to set a predicates object to match the field whose value is not equal to the specified value.|
| [beginWrap](_r_d_b.md#beginwrap) | Pointer to the function used to add a left parenthesis to the predicates.|
| [endWrap](_r_d_b.md#endwrap) | Pointer to the function used to add a right parenthesis to the predicates.|
| [orOperate](_r_d_b.md#oroperate) | Pointer to the function used to add the OR operator to the predicates.|
| [andOperate](_r_d_b.md#andoperate) | Pointer to the function used to add the AND operator to the predicates.|
| [isNull](_r_d_b.md#isnull-22) | Pointer to the function used to set a predicates object to match the field whose value is null.|
| [isNotNull](_r_d_b.md#isnotnull) | Pointer to the function used to set a predicates object to match the field whose value is not null.|
| [like](_r_d_b.md#like) | Pointer to the function used to set a predicates object to match a string that is similar to the specified value.|
| [between](_r_d_b.md#between) | Pointer to the function used to set a predicates object to match the field whose value is within the specified range.|
| [notBetween](_r_d_b.md#notbetween) | Pointer to the function used to set a predicates object to match the field whose value is out of the specified range.|
| [greaterThan](_r_d_b.md#greaterthan) | Pointer to the function used to set a predicates object to match the field with value greater than the specified value.|
| [lessThan](_r_d_b.md#lessthan) | Pointer to the function used to set a predicates object to match the field with value less than the specified value.|
| [greaterThanOrEqualTo](_r_d_b.md#greaterthanorequalto) | Pointer to the function used to set a predicates object to match the field with value greater than or equal to the specified value.|
| [lessThanOrEqualTo](_r_d_b.md#lessthanorequalto) | Pointer to the function used to set a predicates object to match the field with value less than or equal to the specified value.|
| [orderBy](_r_d_b.md#orderby) | Pointer to the function used to set a predicates object to sort the values in a column in ascending or descending order.|
| [distinct](_r_d_b.md#distinct) | Pointer to the function used to set a predicates object to filter out duplicate records.|
| [limit](_r_d_b.md#limit) | Pointer to the function used to set a predicates object to specify the maximum number of records.|
| [offset](_r_d_b.md#offset) | Pointer to the function used to set a predicates object to specify the start position of the returned result.|
| [groupBy](_r_d_b.md#groupby) | Pointer to the function used to set a predicates object to group rows that have the same value into summary rows.|
| [in](_r_d_b.md#in) | Pointer to the function used to set a predicates object to match the field with the value within the specified range.|
| [notIn](_r_d_b.md#notin) | Pointer to the function used to set a predicates object to match the field with the value out of the specified range.|
| [clear](_r_d_b.md#clear-12) | Pointer to the function used to clear a predicates instance.|
| [destroyPredicates](_r_d_b.md#destroypredicates) | Destroys an **OH_Predicates** object and reclaims the memory occupied.|
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# OH_Rdb_Config
## Overview
Defines the RDB store configuration.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [path](_r_d_b.md#path) | Path of the database file.|
| [isEncrypt](_r_d_b.md#isencrypt) | Whether to encrypt the RDB store.|
| [securityLevel](_r_d_b.md#securitylevel) | RDB store security level [OH_Rdb_SecurityLevel](_r_d_b.md#oh_rdb_securitylevel).|
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# OH_Rdb_Store
## Overview
Defines the RDB store type.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [id](_r_d_b.md#id-44) | Unique identifier of the **OH_Rdb_Store** struct.|
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# OH_VBucket
## Overview
Defines the types of the key and value in a KV pair.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [id](_r_d_b.md#id-34) | Unique identifier of the **OH_VBucket** struct.|
| [capability](_r_d_b.md#capability) | Number of the KV pairs in the struct.|
| [putText](_r_d_b.md#puttext-12) | Puts a char value into the **OH_VBucket** object in the given column.|
| [putInt64](_r_d_b.md#putint64-12) | Puts an int64_t value into the **OH_VBucket** object in the given column.|
| [putReal](_r_d_b.md#putreal) | Puts a double value into the **OH_VBucket** object in the given column.|
| [putBlob](_r_d_b.md#putblob) | Puts a const uint8_t value into the **OH_VBucket** object in the given column.|
| [putNull](_r_d_b.md#putnull) | Puts a null value into the **OH_VBucket** object in the given column.|
| [clear](_r_d_b.md#clear-22) | Clears an **OH_VBucket** object.|
| [destroyValuesBucket](_r_d_b.md#destroyvaluesbucket) | Destroys an **OH_VBucket** object and reclaims the memory occupied.|
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# OH_VObject
## Overview
Defines the allowed data field types.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Member Variables
| Name| Description|
| -------- | -------- |
| [id](_r_d_b.md#id-24) | Unique identifier of the **OH_VObject** struct.|
| [putInt64](_r_d_b.md#putint64-22) | Converts a single parameter or an array of the int64 type into a value of the OH_VObject type.|
| [putDouble](_r_d_b.md#putdouble) | Converts a single parameter or an array of the int64 type into a value of the OH_VObject type.|
| [putText](_r_d_b.md#puttext-22) | Converts a character array of the char type to a value of the OH_VObject type.|
| [putTexts](_r_d_b.md#puttexts) | Converts a string array of the char type to a value of the OH_VObject type.|
| [destroyValueObject](_r_d_b.md#destroyvalueobject) | Destroys an OH_VObject object and reclaims the memory occupied.|
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en/application-dev/reference/native-apis/context_8h.md
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......@@ -5,10 +5,11 @@
Provides **Context** APIs for configuring runtime information.
**Since:**
**Since**
9
**Related Modules:**
**Related Modules**
[MindSpore](_mind_spore.md)
......@@ -18,35 +19,48 @@ Provides **Context** APIs for configuring runtime information.
### Types
| Name | Description |
| Name| Description|
| -------- | -------- |
| [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) | Defines the pointer to the MindSpore context. |
| [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) | Defines the pointer to the MindSpore device information. |
| [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) | Defines the pointer to the MindSpore device information.|
### Functions
| Name | Description |
| Name| Description|
| -------- | -------- |
| [OH_AI_ContextCreate](_mind_spore.md#oh_ai_contextcreate) () | Creates a context object. |
| [OH_AI_ContextDestroy](_mind_spore.md#oh_ai_contextdestroy) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) \*context) | Destroys a context object. |
| [OH_AI_ContextSetThreadNum](_mind_spore.md#oh_ai_contextsetthreadnum) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, int32_t thread_num) | Sets the number of runtime threads. |
| [OH_AI_ContextGetThreadNum](_mind_spore.md#oh_ai_contextgetthreadnum) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Obtains the number of threads. |
| [OH_AI_ContextSetThreadAffinityMode](_mind_spore.md#oh_ai_contextsetthreadaffinitymode) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, int mode) | Sets the affinity mode for binding runtime threads to CPU cores, which are categorized into little cores and big cores depending on the CPU frequency. |
| [OH_AI_ContextGetThreadAffinityMode](_mind_spore.md#oh_ai_contextgetthreadaffinitymode) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Obtains the affinity mode for binding runtime threads to CPU cores. |
| [OH_AI_ContextSetThreadAffinityCoreList](_mind_spore.md#oh_ai_contextsetthreadaffinitycorelist) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, const int32_t \*core_list, size_t core_num) | Sets the list of CPU cores bound to a runtime thread. |
| [OH_AI_ContextGetThreadAffinityCoreList](_mind_spore.md#oh_ai_contextgetthreadaffinitycorelist) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, size_t \*core_num) | Obtains the list of bound CPU cores. |
| [OH_AI_ContextSetEnableParallel](_mind_spore.md#oh_ai_contextsetenableparallel) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, bool is_parallel) | Sets whether to enable parallelism between operators. |
| [OH_AI_ContextGetEnableParallel](_mind_spore.md#oh_ai_contextgetenableparallel) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Checks whether parallelism between operators is supported. |
| [OH_AI_ContextAddDeviceInfo](_mind_spore.md#oh_ai_contextadddeviceinfo) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Adds information about a running device. |
| [OH_AI_DeviceInfoCreate](_mind_spore.md#oh_ai_deviceinfocreate) ([OH_AI_DeviceType](_mind_spore.md#oh_ai_devicetype) device_type) | Creates a device information object. |
| [OH_AI_DeviceInfoDestroy](_mind_spore.md#oh_ai_deviceinfodestroy) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) \*device_info) | Destroys a device information instance. |
| [OH_AI_DeviceInfoSetProvider](_mind_spore.md#oh_ai_deviceinfosetprovider) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, const char \*provider) | Sets the name of a provider. |
| [OH_AI_DeviceInfoGetProvider](_mind_spore.md#oh_ai_deviceinfogetprovider) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the provider name. |
| [OH_AI_DeviceInfoSetProviderDevice](_mind_spore.md#oh_ai_deviceinfosetproviderdevice) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, const char \*device) | Sets the name of a provider device. |
| [OH_AI_DeviceInfoGetProviderDevice](_mind_spore.md#oh_ai_deviceinfogetproviderdevice) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the name of a provider device. |
| [OH_AI_DeviceInfoGetDeviceType](_mind_spore.md#oh_ai_deviceinfogetdevicetype) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the type of a provider device. |
| [OH_AI_DeviceInfoSetEnableFP16](_mind_spore.md#oh_ai_deviceinfosetenablefp16) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, bool is_fp16) | Sets whether to enable float16 inference. This function is available only for CPU/GPU devices. |
| [OH_AI_DeviceInfoGetEnableFP16](_mind_spore.md#oh_ai_deviceinfogetenablefp16) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Checks whether float16 inference is enabled. This function is available only for CPU/GPU devices. |
| [OH_AI_DeviceInfoSetFrequency](_mind_spore.md#oh_ai_deviceinfosetfrequency) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, int frequency) | Sets the NPU frequency type. This function is available only for NPU devices. |
| [OH_AI_DeviceInfoGetFrequency](_mind_spore.md#oh_ai_deviceinfogetfrequency) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the NPU frequency type. This function is available only for NPU devices. |
| [OH_AI_ContextCreate](_mind_spore.md#oh_ai_contextcreate) () | Creates a context object.|
| [OH_AI_ContextDestroy](_mind_spore.md#oh_ai_contextdestroy) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) \*context) | Destroys a context object.|
| [OH_AI_ContextSetThreadNum](_mind_spore.md#oh_ai_contextsetthreadnum) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, int32_t thread_num) | Sets the number of runtime threads.|
| [OH_AI_ContextGetThreadNum](_mind_spore.md#oh_ai_contextgetthreadnum) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Obtains the number of threads.|
| [OH_AI_ContextSetThreadAffinityMode](_mind_spore.md#oh_ai_contextsetthreadaffinitymode) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, int mode) | Sets the affinity mode for binding runtime threads to CPU cores, which are classified into large, medium, and small cores based on the CPU frequency. You only need to bind the large or medium cores, but not small cores.|
| [OH_AI_ContextGetThreadAffinityMode](_mind_spore.md#oh_ai_contextgetthreadaffinitymode) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Obtains the affinity mode for binding runtime threads to CPU cores.|
| [OH_AI_ContextSetThreadAffinityCoreList](_mind_spore.md#oh_ai_contextsetthreadaffinitycorelist) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, const int32_t \*core_list, size_t core_num) | Sets the list of CPU cores bound to a runtime thread.|
| [OH_AI_ContextGetThreadAffinityCoreList](_mind_spore.md#oh_ai_contextgetthreadaffinitycorelist) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, size_t \*core_num) | Obtains the list of bound CPU cores.|
| [OH_AI_ContextSetEnableParallel](_mind_spore.md#oh_ai_contextsetenableparallel) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, bool is_parallel) | Sets whether to enable parallelism between operators. The setting is ineffective because the feature of this API is not yet available.|
| [OH_AI_ContextGetEnableParallel](_mind_spore.md#oh_ai_contextgetenableparallel) (const [OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context) | Checks whether parallelism between operators is supported.|
| [OH_AI_ContextAddDeviceInfo](_mind_spore.md#oh_ai_contextadddeviceinfo) ([OH_AI_ContextHandle](_mind_spore.md#oh_ai_contexthandle) context, [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Attaches the custom device information to the inference context.|
| [OH_AI_DeviceInfoCreate](_mind_spore.md#oh_ai_deviceinfocreate) ([OH_AI_DeviceType](_mind_spore.md#oh_ai_devicetype) device_type) | Creates a device information object.|
| [OH_AI_DeviceInfoDestroy](_mind_spore.md#oh_ai_deviceinfodestroy) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) \*device_info) | Destroys a device information object. Note: After the device information instance is added to the context, the caller does not need to destroy it manually.|
| [OH_AI_DeviceInfoSetProvider](_mind_spore.md#oh_ai_deviceinfosetprovider) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, const char \*provider) | Sets the provider name.|
| [OH_AI_DeviceInfoGetProvider](_mind_spore.md#oh_ai_deviceinfogetprovider) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the provider name.|
| [OH_AI_DeviceInfoSetProviderDevice](_mind_spore.md#oh_ai_deviceinfosetproviderdevice) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, const char \*device) | Sets the name of a provider device.|
| [OH_AI_DeviceInfoGetProviderDevice](_mind_spore.md#oh_ai_deviceinfogetproviderdevice) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the name of a provider device.|
| [OH_AI_DeviceInfoGetDeviceType](_mind_spore.md#oh_ai_deviceinfogetdevicetype) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the device type.|
| [OH_AI_DeviceInfoSetEnableFP16](_mind_spore.md#oh_ai_deviceinfosetenablefp16) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, bool is_fp16) | Sets whether to enable float16 inference. This function is available only for CPU and GPU devices.|
| [OH_AI_DeviceInfoGetEnableFP16](_mind_spore.md#oh_ai_deviceinfogetenablefp16) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Checks whether float16 inference is enabled. This function is available only for CPU and GPU devices.|
| [OH_AI_DeviceInfoSetFrequency](_mind_spore.md#oh_ai_deviceinfosetfrequency) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, int frequency) | Sets the NPU frequency type. This function is available only for NPU devices.|
| [OH_AI_DeviceInfoGetFrequency](_mind_spore.md#oh_ai_deviceinfogetfrequency) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the NPU frequency type. This function is available only for NPU devices.|
| [OH_AI_GetAllNNRTDeviceDescs](_mind_spore.md#oh_ai_getallnnrtdevicedescs) (size_t \*num) | Obtains the descriptions of all NNRt devices in the system.|
| [OH_AI_DestroyAllNNRTDeviceDescs](_mind_spore.md#oh_ai_destroyallnnrtdevicedescs) ([NNRTDeviceDesc](_mind_spore.md#nnrtdevicedesc) \*\*desc) | Destroys the array of NNRT descriptions obtained by [OH_AI_GetAllNNRTDeviceDescs](_mind_spore.md#oh_ai_getallnnrtdevicedescs).|
| [OH_AI_GetDeviceIdFromNNRTDeviceDesc](_mind_spore.md#oh_ai_getdeviceidfromnnrtdevicedesc) (const [NNRTDeviceDesc](_mind_spore.md#nnrtdevicedesc) \*desc) | Obtains the NNRt device ID from the specified NNRt device description. Note that this ID is valid only for NNRt devices.|
| [OH_AI_GetNameFromNNRTDeviceDesc](_mind_spore.md#oh_ai_getnamefromnnrtdevicedesc) (const [NNRTDeviceDesc](_mind_spore.md#nnrtdevicedesc) \*desc) | Obtains the NNRt device name from the specified NNRt device description.|
| [OH_AI_GetTypeFromNNRTDeviceDesc](_mind_spore.md#oh_ai_gettypefromnnrtdevicedesc) (const [NNRTDeviceDesc](_mind_spore.md#nnrtdevicedesc) \*desc) | Obtains the NNRt device type from the specified NNRt device description.|
| [OH_AI_CreateNNRTDeviceInfoByName](_mind_spore.md#oh_ai_creatennrtdeviceinfobyname) (const char \*name) | Searches for the NNRt device with the specified name and creates the NNRt device information based on the information about the first found NNRt device.|
| [OH_AI_CreateNNRTDeviceInfoByType](_mind_spore.md#oh_ai_creatennrtdeviceinfobytype) ([OH_AI_NNRTDeviceType](_mind_spore.md#oh_ai_nnrtdevicetype) type) | Searches for the NNRt device with the specified type and creates the NNRt device information based on the information about the first found NNRt device.|
| [OH_AI_DeviceInfoSetDeviceId](_mind_spore.md#oh_ai_deviceinfosetdeviceid) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, size_t device_id) | Sets the ID of an NNRt device. This API is available only for NNRt devices.|
| [OH_AI_DeviceInfoGetDeviceId](_mind_spore.md#oh_ai_deviceinfogetdeviceid) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the ID of an NNRt device. This API is available only for NNRt devices.|
| [OH_AI_DeviceInfoSetPerformanceMode](_mind_spore.md#oh_ai_deviceinfosetperformancemode) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, [OH_AI_PerformanceMode](_mind_spore.md#oh_ai_performancemode) mode) | Sets the performance mode of an NNRt device. This API is available only for NNRt devices.|
| [OH_AI_DeviceInfoGetPerformanceMode](_mind_spore.md#oh_ai_deviceinfogetperformancemode) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the performance mode of an NNRt device. This API is available only for NNRt devices.|
| [OH_AI_DeviceInfoSetPriority](_mind_spore.md#oh_ai_deviceinfosetpriority) ([OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info, [OH_AI_Priority](_mind_spore.md#oh_ai_priority) priority) | Sets the priority of an NNRT task. This API is available only for NNRt devices.|
| [OH_AI_DeviceInfoGetPriority](_mind_spore.md#oh_ai_deviceinfogetpriority) (const [OH_AI_DeviceInfoHandle](_mind_spore.md#oh_ai_deviceinfohandle) device_info) | Obtains the priority of an NNRT task. This API is available only for NNRt devices.|
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# oh_cursor.h
## Overview
Provides APIs to access the result set obtained by querying the RDB store.
A result set is a set of results returned by **query()**.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OH_Cursor](_o_h___cursor.md) | Defines a result set.|
### Types
| Name| Description|
| -------- | -------- |
| [OH_Cursor](_r_d_b.md#oh_cursor) | Indicates a result set.|
### Enums
| Name| Description|
| -------- | -------- |
| [OH_ColumnType](_r_d_b.md#oh_columntype)&nbsp;{<br>TYPE_NULL&nbsp;=&nbsp;0,&nbsp;TYPE_INT64,&nbsp;TYPE_REAL,&nbsp;TYPE_TEXT,<br>TYPE_BLOB<br>} | Enumerates the field types in an RDB store.|
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# oh_predicates.h
## Overview
Defines the predicates for RDB stores.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OH_Predicates](_o_h___predicates.md) | Defines a **predicates** object. |
### Types
| Name| Description|
| -------- | -------- |
| [OH_Predicates](_r_d_b.md#oh_predicates) | Indicates a **predicates** object. |
### Enums
| Name| Description|
| -------- | -------- |
| [OH_OrderType](_r_d_b.md#oh_ordertype)&nbsp;{&nbsp;ASC&nbsp;=&nbsp;0,&nbsp;DESC&nbsp;=&nbsp;1&nbsp;} | Enumerates the sorting types.|
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# oh_value_object.h
## Overview
Provides type conversion methods.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OH_VObject](_o_h___v_object.md) | Defines the allowed data field types.|
### Types
| Name| Description|
| -------- | -------- |
| [OH_VObject](_r_d_b.md#oh_vobject) | Indicates the allowed data field types. |
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# oh_values_bucket.h
## Overview
Defines the types of the key and value in a key-value (KV) pair.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OH_VBucket](_o_h___v_bucket.md) | Defines the types of the key and value in a KV pair.|
### Types
| Name| Description|
| -------- | -------- |
| [OH_VBucket](_r_d_b.md#oh_vbucket) | Indicates the types of the key and value in a KV pair. |
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# relation_store.h
## Overview
Provides APIs to manage a relational database (RDB) store.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Structs
| Name| Description|
| -------- | -------- |
| [OH_Rdb_Config](_o_h___rdb___config.md) | Defines the RDB store configuration.|
| [OH_Rdb_Store](_o_h___rdb___store.md) | Defines the RDB store type.|
### Enums
| Name| Description|
| -------- | -------- |
| [OH_Rdb_SecurityLevel](_r_d_b.md#oh_rdb_securitylevel) { S1 = 1, S2, S3, S4 } | Enumerates the RDB store security levels.|
### Functions
| Name| Description|
| -------- | -------- |
| [OH_Rdb_CreateValueObject](_r_d_b.md#oh_rdb_createvalueobject) (void) | Creates an [OH_VObject](_o_h___v_object.md) instance.|
| [OH_Rdb_CreateValuesBucket](_r_d_b.md#oh_rdb_createvaluesbucket) (void) | Creates an [OH_VBucket](_o_h___v_bucket.md) instance.|
| [OH_Rdb_CreatePredicates](_r_d_b.md#oh_rdb_createpredicates) (const char \*table) | Creates an [OH_Predicates](_o_h___predicates.md) instance.|
| [OH_Rdb_GetOrOpen](_r_d_b.md#oh_rdb_getoropen) (const [OH_Rdb_Config](_o_h___rdb___config.md) \*config, int \*errCode) | Obtains an [OH_Rdb_Store](_o_h___rdb___store.md) instance for RDB store operations.|
| [OH_Rdb_CloseStore](_r_d_b.md#oh_rdb_closestore) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store) | Destroys an [OH_Rdb_Store](_o_h___rdb___store.md) object and reclaims the memory occupied by the object.|
| [OH_Rdb_DeleteStore](_r_d_b.md#oh_rdb_deletestore) (const char \*path) | Deletes an RDB store with the specified database file configuration.|
| [OH_Rdb_Insert](_r_d_b.md#oh_rdb_insert) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, const char \*table, [OH_VBucket](_o_h___v_bucket.md) \*valuesBucket) | Inserts a row of data into a table.|
| [OH_Rdb_Update](_r_d_b.md#oh_rdb_update) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, [OH_VBucket](_o_h___v_bucket.md) \*valuesBucket, [OH_Predicates](_o_h___predicates.md) \*predicates) | Updates data in an RDB store based on specified conditions.|
| [OH_Rdb_Delete](_r_d_b.md#oh_rdb_delete) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, [OH_Predicates](_o_h___predicates.md) \*predicates) | Deletes data from an RDB store based on specified conditions.|
| [OH_Rdb_Query](_r_d_b.md#oh_rdb_query) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, [OH_Predicates](_o_h___predicates.md) \*predicates, const char \*const \*columnNames, int length) | Queries data in an RDB store based on specified conditions.|
| [OH_Rdb_Execute](_r_d_b.md#oh_rdb_execute) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, const char \*sql) | Executes the SQL statement that returns no value.|
| [OH_Rdb_ExecuteQuery](_r_d_b.md#oh_rdb_executequery) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, const char \*sql) | Queries data in an RDB store based on the SQL statements executed.|
| [OH_Rdb_BeginTransaction](_r_d_b.md#oh_rdb_begintransaction) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store) | Starts the transaction before executing the SQL statements.|
| [OH_Rdb_RollBack](_r_d_b.md#oh_rdb_rollback) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store) | Rolls back the SQL statements executed. |
| [OH_Rdb_Commit](_r_d_b.md#oh_rdb_commit) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store) | Commits the executed SQL statements.|
| [OH_Rdb_Backup](_r_d_b.md#oh_rdb_backup) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, const char \*databasePath) | Backs up the RDB store in the specified path.|
| [OH_Rdb_Restore](_r_d_b.md#oh_rdb_restore) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, const char \*databasePath) | Restores an RDB store from the specified database backup file.|
| [OH_Rdb_GetVersion](_r_d_b.md#oh_rdb_getversion) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, int \*version) | Obtains the RDB store version.|
| [OH_Rdb_SetVersion](_r_d_b.md#oh_rdb_setversion) ([OH_Rdb_Store](_o_h___rdb___store.md) \*store, int version) | Sets the RDB store version.|
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# relation_error_code.h
## Overview
Declares the error codes used for relational database (RDB) stores.
**Since**
10
**Related Modules**
[RDB](_r_d_b.md)
## Summary
### Enums
| Name| Description|
| -------- | -------- |
| [OH_Rdb_ErrCode](_r_d_b.md#oh_rdb_errcode)&nbsp;{&nbsp;RDB_ERR_INVALID_ARGS&nbsp;=&nbsp;-2,&nbsp;RDB_ERR&nbsp;=&nbsp;-1,&nbsp;RDB_ERR_OK&nbsp;=&nbsp;0&nbsp;} | Enumerates the RDB store error codes. |
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......@@ -359,6 +359,14 @@ Power management display
| ------- | ------ | ------ | ---- | ---- | ------ | ------------ | ------ |
| Yes | No | Yes | Yes | No | Yes | No | No |
## SystemCapability.PowerManager.DisplayPowerManager.Lite
Lite device capabilities of the system power management display
| Default | Sports Watch| Smart Watch| Tablet| Head Unit| Smart TV| Smart Vision | Router |
| ------- | ------ | ------ | ---- | ---- | ------ | ------------ | ------ |
| Yes | Yes | Yes | Yes | No | Yes | No | No |
## SystemCapability.PowerManager.ThermalManager
Temperature control
......
en/application-dev/task-management/background-task-overview.md
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......@@ -46,9 +46,11 @@ Adhere to the following constraints and rules when using transient tasks:
- **Quota mechanism**: To prevent abuse of the keepalive, each application has a certain quota every day (dynamically adjusted based on user habits). The default quota for a single day is 10 minutes, and the maximum quota for each request is 3 minutes. After using up the quota, an application cannot request transient tasks. Therefore, applications should cancel their request immediately after the transient tasks are complete, to avoid quota consumption. (Note: The quota refers to the requested duration and does not include the time when the application runs in the background.)
## Continuous Tasks
Continuous tasks provide background running lifecycle support for services that can be directly perceived by users and need to run in the background. For example, if a service needs to play audio or continue with navigation and positioning in the background, which can be perceived by users, it can execute a continuous task in the respective background mode.
### Background Mode Classification
OpenHarmony provides 9 background modes for services that require continuous task execution.
**Table 1** Background modes for continuous tasks
......@@ -66,6 +68,7 @@ OpenHarmony provides 9 background modes for services that require continuous tas
| taskKeeping | Computing task | A computing task is running | Effective only for specific devices |
### Restrictions on Using Continuous Tasks
- If a user triggers a perceivable task, such as broadcasting and navigation, the corresponding background mode is triggered. When the task is started, the system forcibly displays a notification to the user.
- If the task is complete, the application should exit the background mode. If the system detects that an application is not using the resources in the corresponding background mode when the application is running in the background, the application is suspended.
- Ensure that the requested continuous task background mode matches the application type. If the background mode does not match the application type, the system will suspend the task once it detects the issue.
......@@ -73,6 +76,7 @@ OpenHarmony provides 9 background modes for services that require continuous tas
- An ability can request only one continuous task at a time. If an application has multiple abilities, you can request a continuous task for each ability.
## Work Scheduler Tasks
The Work Scheduler provides a mechanism for an application to execute a non-real-time task, for example, data learning, when the system is idle. The system places the Work Scheduler tasks requested by applications in a queue and determines the optimal scheduling time of each task based on the storage space, power consumption, temperature, and more. Persistence is supported. This means that a requested Work Scheduler task can be triggered when the application exits or the device restarts.
### Restrictions on Using Work Scheduler Tasks
......@@ -103,6 +107,7 @@ The use of the Work Scheduler must comply with the following restrictions and ru
- The carried parameters can be of the number, string, or boolean type.
## Efficiency Resources
Efficiency resources are classified into software (WORK_SCHEDULER, COMMON_EVENT, and TIMER) and hardware resources (CPU, GPS, BLUETOOTH, and AUDIO).
An application can perform different operations based on the requested efficiency resources.
......@@ -126,6 +131,7 @@ An application can perform different operations based on the requested efficienc
| AUDIO | 64 | AUDIO resources, which prevent audio resources from being proxied when the application is suspended. |
### Restrictions on Using Efficiency Resources
- Applications or processes are responsible for requesting and releasing efficiency resources. A process can release the resources requested by itself, whereas an application can release the resources requested by both itself and its processes. For example, an application requests CPU resources, and its process requests CPU and WORK_SCHEDULER resources. If the application initiates CPU resource release, the CPU resources requested by the process are also released. However, the WORK_SCHEDULER resources are not released. If the process initiates CPU resource release, the CPU resources requested by the application are retained until being released by the application.
- If persistent resources and non-persistent resources of the same type are requested, the persistent resources overwrite the non-persistent resources and they will not be released upon a timeout. For example, if an application first requests 10-second CPU resources and then requests persistent CPU resources at the 5th second, the CPU resources become persistent and will not be released at the tenth second. If the application releases the CPU resources at the 8th second, both types of CPU resources are released.
- The WORK_SCHEDULER resources can be requested and released by applications, but not by processes.
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# Pan-sensor Subsystem Changelog
## cl.vibrator.1 Added Attributes Related to Custom Vibration
The attributes **VibrateFromFile** (custom vibration effect) and **HapticFileDescriptor** (file descriptor of the custom vibration configuration file) are added. The vibration effect supported by **startVibration** is extended from **VibrateEffect = VibrateTime | VibratePreset** to **VibrateEffect = VibrateTime | VibratePreset | VibrateFromFile**.
**Change Impact**
When developing applications based on OpenHarmony4.0.8.2 and later SDK versions, you can use the **VibrateFromFile** attribute to enable devices that support custom vibration to trigger vibration according to the vibration sequence configured in the custom vibration configuration file.
**Key API/Component Changes**
Added the **VibrateFromFile** and **HapticFileDescriptor** attributes to **@ohos.vibrator.d.ts**.
| Module| Class| Method/Attribute/Enum/Constant| Change Type|
| -- | -- | -- | -- |
| @ohos.vibrator.d.ts | vibrator | HapticFileDescriptor | Added|
| @ohos.vibrator.d.ts | vibrator | VibrateFromFile | Added|
**Adaptation Guide**
Obtain the resources in the vibration configuration file through the resource management API, and start or stop custom vibration as required.
```ts
import vibrator from '@ohos.vibrator';
import resourceManager from '@ohos.resourceManager';
const FILE_NAME = "xxx.json";
async function openResource(fileName) {
let fileDescriptor = undefined;
let mgr = await resourceManager.getResourceManager();
await mgr.getRawFd(fileName).then(value => {
fileDescriptor = {fd: value.fd, offset: value.offset, length: value.length};
console.log('openResource success fileName: ' + fileName);
}).catch(error => {
console.log('openResource err: ' + error);
});
return fileDescriptor;
}
async function closeResource(fileName) {
let mgr = await resourceManager.getResourceManager();
await mgr.closeRawFd(fileName).then(()=> {
console.log('closeResource success fileName: ' + fileName);
}).catch(error => {
console.log('closeResource err: ' + error);
});
}
// Obtain the file descriptor of the vibration configuration file.
let rawFd = openResource(FILE_NAME);
// To use startVibration and stopVibration, you must configure the ohos.permission.VIBRATE permission.
try {
// Start custom vibration.
vibrator.startVibration({
type: "file",
hapticFd: { fd: rawFd.fd, offset: rawFd.offset, length: rawFd.length }
}, {
usage: "alarm"
}).then(() => {
console.info('startVibration success');
}, (error) => {
console.info('startVibration error');
});
// Stop vibration in all modes.
vibrator.stopVibration(function (error) {
if (error) {
console.log('error.code' + error.code + 'error.message' + error.message);
return;
}
console.log('Callback returned to indicate successful.');
})
} catch (error) {
console.info('errCode: ' + error.code + ' ,msg: ' + error.message);
}
// Close the vibration configuration file.
closeResource(FILE_NAME);
```
zh-cn/application-dev/application-models/atomic-services-support-sharing.md
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......@@ -15,7 +15,7 @@
}
```
2. 系统弹框调用[abilityManager.acquireShareData()](../reference/apis/js-apis-app-ability-abilityManager.md#acquiresharedata)接口发起原子化服务共享，根据missionId找到对应的UIAbiltiy，调用其OnShare生命周期，收到共享数据。
2. 系统弹框调用[abilityManager.acquireShareData()](../reference/apis/js-apis-app-ability-abilityManager.md#acquiresharedata)接口发起原子化服务共享，根据missionId找到对应的UIAbility，调用其OnShare生命周期，收到共享数据。
```ts
import abilityManager from '@ohos.app.ability.abilityManager';
......
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......@@ -10,7 +10,7 @@
如图所示，用户程序通过JS接口调用用户首选项读写对应的数据文件。开发者可以将用户首选项持久化文件的内容加载到Preferences实例，每个文件唯一对应到一个Preferences实例，系统会通过静态容器将该实例存储在内存中，直到主动从内存中移除该实例或者删除该文件。
应用首选项的持久化文件保存在应用沙箱内部，可以通过context获取其路径。具体可见[获取应用开发路径](../application-models/application-context-stage.md#获取应用开发路径)。
应用首选项的持久化文件保存在应用沙箱内部，可以通过context获取其路径。具体可见[获取应用文件路径](../application-models/application-context-stage.md#获取应用文件路径)。
**图1** 用户首选项运作机制  
......@@ -28,15 +28,15 @@
## 接口说明
以下是用户首选项持久化功能的相关接口，大部分为异步接口。异步接口均有callback和Promise两种返回形式，下表均以callback形式为例，更多接口及使用方式请见[用户首选项](../reference/apis/js-apis-data-preferences.md)。
以下是用户首选项持久化功能的相关接口，更多接口及使用方式请见[用户首选项](../reference/apis/js-apis-data-preferences.md)。
| 接口名称 | 描述 |
| -------- | -------- |
|--------------------------------------------------------------------------------------------------|------------------------------------------------------------|
| getPreferences(context: Context, name: string, callback: AsyncCallback&lt;Preferences&gt;): void | 获取Preferences实例。 |
| put(key: string, value: ValueType, callback: AsyncCallback&lt;void&gt;): void | 将数据写入Preferences实例，可通过flush将Preferences实例持久化。 |
| has(key: string, callback: AsyncCallback&lt;boolean&gt;): void | 检查Preferences实例是否包含名为给定Key的存储键值对。给定的Key值不能为空。 |
| get(key: string, defValue: ValueType, callback: AsyncCallback&lt;ValueType&gt;): void | 获取键对应的值，如果值为null或者非默认值类型，返回默认数据defValue。 |
| delete(key: string, callback: AsyncCallback&lt;void&gt;): void | 从Preferences实例中删除名为给定Key的存储键值对。 |
| putSync(key: string, value: ValueType): void | 将数据写入Preferences实例，可通过flush将Preferences实例持久化。该接口存在异步接口。 |
| hasSync(key: string): void | 检查Preferences实例是否包含名为给定Key的存储键值对。给定的Key值不能为空。该接口存在异步接口。 |
| getSync(key: string, defValue: ValueType): void | 获取键对应的值，如果值为null或者非默认值类型，返回默认数据defValue。该接口存在异步接口。 |
| deleteSync(key: string): void | 从Preferences实例中删除名为给定Key的存储键值对。该接口存在异步接口。 |
| flush(callback: AsyncCallback&lt;void&gt;): void | 将当前Preferences实例的数据异步存储到用户首选项持久化文件中。 |
| on(type: 'change', callback: Callback&lt;{ key : string }&gt;): void | 订阅数据变更，订阅的Key的值发生变更后，在执行flush方法后，触发callback回调。 |
| off(type: 'change', callback?: Callback&lt;{ key : string }&gt;): void | 取消订阅数据变更。 |
......@@ -102,40 +102,24 @@
3. 写入数据。
使用put()方法保存数据到缓存的Preferences实例中。在写入数据后，如有需要，可使用flush()方法将Preferences实例的数据存储到持久化文件。
使用putSync()方法保存数据到缓存的Preferences实例中。在写入数据后，如有需要，可使用flush()方法将Preferences实例的数据存储到持久化文件。
> **说明：**
>
> 当对应的键已经存在时，put()方法会修改其值。如果仅需要在键值对不存在时新增键值对，而不修改已有键值对，需使用has()方法检查是否存在对应键值对；如果不关心是否会修改已有键值对，则直接使用put()方法即可。
> 当对应的键已经存在时，putSync()方法会修改其值。可以使用hasSync()方法检查是否存在对应键值对。
示例代码如下所示：
```js
try {
preferences.has('startup', function (err, val) {
if (err) {
console.error(`Failed to check the key 'startup'. Code:${err.code}, message:${err.message}`);
return;
}
if (val) {
if (preferences.hasSync('startup')) {
console.info("The key 'startup' is contained.");
} else {
console.info("The key 'startup' does not contain.");
// 此处以此键值对不存在时写入数据为例
try {
preferences.put('startup', 'auto', (err) => {
if (err) {
console.error(`Failed to put data. Code:${err.code}, message:${err.message}`);
return;
}
console.info('Succeeded in putting data.');
})
} catch (err) {
console.error(`Failed to put data. Code: ${err.code},message:${err.message}`);
}
preferences.putSync('startup', 'auto');
}
})
} catch (err) {
console.error(`Failed to check the key 'startup'. Code:${err.code}, message:${err.message}`);
}
......@@ -143,17 +127,12 @@
4. 读取数据。
使用get()方法获取数据，即指定键对应的值。如果值为null或者非默认值类型，则返回默认数据。示例代码如下所示：
使用getSync()方法获取数据，即指定键对应的值。如果值为null或者非默认值类型，则返回默认数据。示例代码如下所示：
```js
try {
preferences.get('startup', 'default', (err, val) => {
if (err) {
console.error(`Failed to get value of 'startup'. Code:${err.code}, message:${err.message}`);
return;
}
let val = preferences.getSync('startup', 'default');
console.info(`Succeeded in getting value of 'startup'. val: ${val}.`);
})
} catch (err) {
console.error(`Failed to get value of 'startup'. Code:${err.code}, message:${err.message}`);
}
......@@ -161,18 +140,12 @@
5. 删除数据。
使用delete()方法删除指定键值对，示例代码如下所示：
使用deleteSync()方法删除指定键值对，示例代码如下所示：
```js
try {
preferences.delete('startup', (err) => {
if (err) {
console.error(`Failed to delete the key 'startup'. Code:${err.code}, message:${err.message}`);
return;
}
console.info("Succeeded in deleting the key 'startup'.");
})
preferences.deleteSync('startup');
} catch (err) {
console.error(`Failed to delete the key 'startup'. Code:${err.code}, message:${err.message}`);
}
......
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# 扩展外设管理开发指南
## 场景介绍
扩展外设主要是指通过物理接口连入主设备的配件设备，如手写板、打印机和扫描仪等。应用通过扩展外设管理能力可以查询绑定扩展外设，从而使用扩展外设驱动提供的定制能力来使用扩展外设，如打印机的配套软件。
## 接口说明
扩展外设管理主要提供的功能有：查询扩展外设列表、绑定和解绑查询到的设备。
扩展外设管理开放能力如下，具体请查阅[API参考文档](../reference/apis/js-apis-driver-deviceManager.md)。
**表1** 扩展外设管理开放能力接口
| 接口名 | 描述 |
| ----------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------- |
| queryDevices(busType?: number): Array&lt;Readonly&lt;Device&gt;&gt; | 查询扩展外设列表 |
| bindDevice(deviceId: number, onDisconnect: AsyncCallback&lt;number&gt;, callback: AsyncCallback&lt;{deviceId: number, remote: rpc.IRemoteObject}&gt;): void | 绑定设备，绑定成功后返回设备驱动的IRemoteObject通信对象，通过该对象与设备驱动进行交互。 |
| bindDevice(deviceId: number, onDisconnect: AsyncCallback&lt;number&gt;): Promise&lt;{deviceId: number, remote: rpc.IRemoteObject}&gt; | 绑定设备的Promise形式。 |
| unbindDevice(deviceId: number, callback: AsyncCallback&lt;number&gt;): void | 解绑设备。 |
| unbindDevice(deviceId: number): Promise&lt;number&gt; | 解绑设备的Promise形式。 |
## 开发步骤
应用可通过查询绑定扩展外设，从而使用扩展外设的定制驱动能力。开发示例如下：
1. 查询设备列表。
```js
var matchDevice;
try {
let devices = deviceManager.queryDevices(deviceManager.BusType.USB);
for (let item of devices) {
let device = item as deviceManager.USBDevice;
// 通过productId和vendorId来匹配要使用的USB设备
if (device.productId == 1234 && device.vendorId === 2345) {
matchDevice = device;
break;
}
}
} catch (error) {
console.error('Failed to query device. Code is ${error.code}, message is ${error.message}');
}
if (!matchDevice) {
console.error('No match device');
return;
}
```
2. 绑定相应的设备。
```js
var remoteObject;
try {
deviceManager.bindDevice(matchDevice.deviceId, (error, data) => {
console.error('Device is disconnected');
}, (error, data) => {
if (error) {
console.error('bindDevice async fail. Code is ${error.code}, message is ${error.message}');
return;
}
console.info('bindDevice success');
remoteObject = data.remote;
});
} catch (error) {
console.error('bindDevice fail. Code is ${error.code}, message is ${error.message}');
}
```
3. 绑定成功后使用设备驱动能力。
```js
let option = new rpc.MessageOption();
let data = rpc.MessageSequence.create();
let repy = rpc.MessageSequence.create();
data.writeString('hello');
let code = 1;
// code和data内容取决于驱动提供的接口
remoteObject.sendMessageRequest(code, data, reply, option)
.then(result => {
console.info('sendMessageRequest finish.');
}).catch(error => {
console.error('sendMessageRequest fail. code:' + error.code);
});
```
4. 设备使用完成，解绑设备。
```js
try {
deviceManager.unbindDevice(matchDevice.deviceId, (error, data) => {
if (error) {
console.error('unbindDevice async fail. Code is ${error.code}, message is ${error.message}');
return;
}
console.info('unbindDevice success');
});
} catch (error) {
console.error('unbindDevice fail. Code is ${error.code}, message is ${error.message}');
}
```
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......@@ -19,6 +19,12 @@
- 选择与保存用户文件（FilePicker）
- [选择用户文件](select-user-file.md)
- [保存用户文件](save-user-file.md)
- 相册管理（photoAccessHelper）
- [相册管理模块开发概述](photoAccessHelper-overview.md)
- [媒体资源（图片、视频）相关](photoAccessHelper-resource-guidelines.md)
- [用户相册相关](photoAccessHelper-userAlbum-guidelines.md)
- [系统相册相关](photoAccessHelper-systemAlbum-guidelines.md)
- [媒体资源变更通知相关](photoAccessHelper-notify-guidelines.md)
- [开发用户文件管理器（仅对系统应用开放）](dev-user-file-manager.md)
- [管理外置存储设备（仅对系统应用开放）](manage-external-storage.md)
- 分布式文件系统
......
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......@@ -8,3 +8,4 @@
- [使用MindSpore Lite进行离线模型的转换及推理](mindspore-lite-offline-model-guidelines.md)
- [Neural Network Runtime对接AI推理框架开发指导](neural-network-runtime-guidelines.md)
- [Purgeable memory开发指导](purgeable-memory-guidelines.md)
- [XComponent开发指导](xcomponent-guidelines.md)
\ No newline at end of file
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......@@ -56,4 +56,4 @@ app.json5配置文件包含以下标签。
| default | 标识对default设备做的特殊配置，可以配置的属性字段有上文提到的：minAPIVersion。<br/>如果使用该属性对default设备做了特殊配置，则应用在default设备中会采用此处配置的属性值，并忽略在app.json5公共区域配置的属性值。 | 对象 | 该标签可缺省，缺省时default设备使用app.json5公共区域配置的属性值。 |
|targetBundleName|标识当前包所指定的目标应用, 标签值的取值规则和范围与bundleName标签一致。|字符串|该标签可缺省，缺省时当前包为非overlay特性的应用。|
|targetPriority|标识当前应用的优先级, 当targetBundleName字段配置之后，当前应用为overlay特征的应用, 该标签的额取值范围为1~100|数值|该标签可缺省, 缺省值为1。|
|generateBuildHash |标识当前应用的所有HAP/HSP是否由打包工具生成哈希值。如果存在，则在系统OTA升级但应用的versionCode保持不变时，可根据哈希值判断应用是否需要升级。<br/>该字段若为true，该应用下的所有hap和hsp都会由打包工具生成其哈希值。<br/><strong>注：</strong>该字段仅对预置应用生效。|布尔值|该标签可缺省, 缺省值为false。|
|generateBuildHash |标识当前应用的所有HAP/HSP是否由打包工具生成哈希值。如果存在，则在系统OTA升级但应用的versionCode保持不变时，可根据哈希值判断应用是否需要升级。<br/>该字段若为true，该应用下的所有hap和hsp都会由打包工具生成其哈希值。**<br/>注：该字段仅对预置应用生效。**|布尔值|该标签可缺省, 缺省值为false。|
zh-cn/application-dev/quick-start/arkts-appstorage.md
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......@@ -12,7 +12,7 @@ AppStorage是应用全局的UI状态存储，是和应用的进程绑定的，
## 概述
AppStorage是LocalStorage是在应用启动的时候会被创建的单例。它的目的是为了提供应用状态数据的中心存储，这些状态数据在应用级别都是可访问的。AppStorage将在应用运行过程保留其属性。属性通过唯一的键字符串值访问。
AppStorage是在应用启动的时候会被创建的单例。它的目的是为了提供应用状态数据的中心存储，这些状态数据在应用级别都是可访问的。AppStorage将在应用运行过程保留其属性。属性通过唯一的键字符串值访问。
AppStorage可以和UI组件同步，且可以在应用业务逻辑中被访问。
......
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......@@ -24,6 +24,7 @@ PersistentStorage和AppStorage中的属性建立双向同步。应用开发通
当持久化更改的过程变得太繁重时，PersistentStorage实现可能会限制持久化属性更改的频率。
PersistentStorage和UIContext相关联，需要在[UIContext](../reference/apis/js-apis-arkui-UIContext.md#uicontext)明确的时候才可以调用，可以通过在[runScopedTask](../reference/apis/js-apis-arkui-UIContext.md#runscopedtask)里明确上下文。如果没有在UIContext明确的地方调用，将导致无法持久化数据。
## 使用场景
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zh-cn/application-dev/quick-start/module-structure.md
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|commonEvents | 定义了公共事件静态订阅者的信息，该字段中需要声明静态订阅者的名称、权限要求及订阅事件列表信息，当订阅的公共事件发送时，该公共事件静态订阅者将被拉起。这里的静态订阅者区分于常用的动态订阅者，前者无需在业务代码中主动调用订阅事件的接口，在公共事件发布时可能未被拉起，而动态订阅者则在业务代码中主动调用公共事件订阅的相关API，因此需要应用处于活动状态。 | 对象数组 | 可缺省，缺省为空。 |
| entryTheme | 此标签标识OpenHarmony内部主题的关键字。将标记值设置为名称的资源索引。 | 字符串 | 可缺省，缺省值为空。 |
|testRunner | 此标签用于支持对测试框架的配置。 | 对象 | 可缺省，缺省值为空。 |
|generateBuildHash |标识当前HAP/HSP是否由打包工具生成哈希值。如果存在，则在系统OTA升级但应用的[version下的code](./app-structure.md#version对象内部结构)保持不变时，可根据哈希值判断应用是否需要升级。<br/><strong>注：</strong>该字段仅对预置应用生效。|布尔值|该标签可缺省, 缺省值为false。|
|generateBuildHash |标识当前HAP/HSP是否由打包工具生成哈希值。如果存在，则在系统OTA升级但应用的[version下的code](./app-structure.md#version对象内部结构)保持不变时，可根据哈希值判断应用是否需要升级。**<br/>注：该字段仅对预置应用生效。**|布尔值|该标签可缺省, 缺省值为false。|
module示例：
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zh-cn/application-dev/website.md
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