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提交 5201721f 编写于 作者: W wusongqing
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updated js-apis-medialibrary 

Signed-off-by: Nwusongqing <wusongqing@huawei.com>
上级 b6fa7cc6
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Showing with 314 addition and 308 deletion
en/application-dev/reference/apis/js-apis-medialibrary.md
浏览文件 @ 5201721f
......@@ -18,14 +18,14 @@ Obtains a **MediaLibrary** instance, which is used to access and modify personal
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------- | ---- | ------------------------------------------------------------ |
| context | Context | Yes | Context of the ability. This parameter is optional for API version 7 and earlier versions, but mandatory for API version 8 and later versions.|
| Name | Type | Mandatory | Description |
| ------- | ------- | ---- | ---------------------------------------- |
| context | Context | Yes | Context of the ability. This parameter is optional for API version 7 and earlier versions, but mandatory for API version 8 and later versions.|
**Return value**
| Type | Description |
| ----------------------------- | :--------- |
| Type | Description |
| ----------------------------- | :---- |
| [MediaLibrary](#medialibrary) | **MediaLibrary** instance.|
**Example**
......@@ -51,10 +51,10 @@ Obtains file assets (also called files). This API uses an asynchronous callback
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------------- | ---- | --------------------------------- |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files. |
| callback | AsyncCallback<[FetchFileResult](#fetchfileresult8)> | Yes | Asynchronous callback of **FetchFileResult**.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files. |
| callback | AsyncCallback<[FetchFileResult](#fetchfileresult8)> | Yes | Asynchronous callback of **FetchFileResult**.|
**Example**
......@@ -88,14 +88,14 @@ Obtains file assets. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ---------------------------------------- | ---- | ------------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files.|
| Name | Type | Mandatory | Description |
| ------- | ---------------------------------------- | ---- | ------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files.|
**Return value**
| Type | Description |
| ------------------------------------ | -------------- |
| Type | Description |
| ------------------------------------ | ------- |
| [FetchFileResult](#fetchfileresult8) | Result set of the file retrieval operation.|
**Example**
......@@ -124,10 +124,10 @@ Subscribes to the media library changes. This API uses an asynchronous callback
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------------------------------------ |
| type | string | Yes | Media type.<br>'deviceChange': registered device change<br>'albumChange': album change<br>'imageChange': image file change<br>'audioChange': audio file change<br>'videoChange': video file change<br>'fileChange': file change<br>'remoteFileChange': file change on the registered device|
| callback | callback&lt;void&gt; | Yes | Void callback. |
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ---------------------------------------- |
| type | string | Yes | Media type.<br>'deviceChange': registered device change<br>'albumChange': album change<br>'imageChange': image file change<br>'audioChange': audio file change<br>'videoChange': video file change<br>'fileChange': file change<br>'remoteFileChange': file change on the registered device|
| callback | callback&lt;void&gt; | Yes | Void callback. |
**Example**
......@@ -146,10 +146,10 @@ Unsubscribes from the media library changes. This API uses an asynchronous callb
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------- | ---- | ------------------------------------------------------------ |
| type | string | Yes | Media type.<br>'deviceChange': registered device change<br>'albumChange': album change<br>'imageChange': image file change<br>'audioChange': audio file change<br>'videoChange': video file change<br>'fileChange': file change<br>'remoteFileChange': file change on the registered device|
| callback | callback&lt;void&gt; | No | Void callback. |
| Name | Type | Mandatory | Description |
| -------- | -------------------- | ---- | ---------------------------------------- |
| type | string | Yes | Media type.<br>'deviceChange': registered device change<br>'albumChange': album change<br>'imageChange': image file change<br>'audioChange': audio file change<br>'videoChange': video file change<br>'fileChange': file change<br>'remoteFileChange': file change on the registered device|
| callback | callback&lt;void&gt; | No | Void callback. |
**Example**
......@@ -171,12 +171,12 @@ Creates a media asset. This API uses an asynchronous callback to return the resu
**Parameters**
| Name | Type | Mandatory| Description |
| ------------ | --------------------------------------- | ---- | ------------------------------------------------------------ |
| mediaType | [MediaType](#mediatype) | Yes | Media type. |
| displayName | string | Yes | Display file name. |
| relativePath | string | Yes | Path for storing the file. You can use [getPublicDirectory](#getpublicdirectory8) to obtain the paths for storing different types of files.|
| callback | AsyncCallback<[FileAsset](#fileasset8)> | Yes | Asynchronous callback for **FileAsset**. |
| Name | Type | Mandatory | Description |
| ------------ | --------------------------------------- | ---- | ---------------------------------------- |
| mediaType | [MediaType](#mediatype) | Yes | Media type. |
| displayName | string | Yes | Display file name. |
| relativePath | string | Yes | Path for storing the file. You can use [getPublicDirectory](#getpublicdirectory8) to obtain the paths for storing different types of files.|
| callback | AsyncCallback<[FileAsset](#fileasset8)> | Yes | Asynchronous callback for **FileAsset**. |
**Example**
......@@ -208,16 +208,16 @@ Creates a media asset. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory| Description |
| ------------ | ----------------------- | ---- | ------------------------------------------------------------ |
| mediaType | [MediaType](#mediatype) | Yes | Media type. |
| displayName | string | Yes | Display file name. |
| relativePath | string | Yes | Relative path. You can use [getPublicDirectory](#getpublicdirectory8) to obtain the relative path of the level-1 directory of different types of media files.|
| Name | Type | Mandatory | Description |
| ------------ | ----------------------- | ---- | ---------------------------------------- |
| mediaType | [MediaType](#mediatype) | Yes | Media type. |
| displayName | string | Yes | Display file name. |
| relativePath | string | Yes | Relative path. You can use [getPublicDirectory](#getpublicdirectory8) to obtain the relative path of the level-1 directory of different types of media files.|
**Return value**
| Type | Description |
| ------------------------ | ----------------- |
| Type | Description |
| ------------------------ | ------------- |
| [FileAsset](#fileasset8) | Media data (FileAsset).|
**Example**
......@@ -246,10 +246,10 @@ Obtains a public directory. This API uses an asynchronous callback to return the
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------- | ---- | ------------------------- |
| type | [DirectoryType](#directorytype) | Yes | Type of the public directory. |
| callback | AsyncCallback&lt;string&gt; | Yes | Callback used to return the public directory.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------------- | ---- | ----------------- |
| type | [DirectoryType](#directorytype) | Yes | Type of the public directory. |
| callback | AsyncCallback&lt;string&gt; | Yes | Callback used to return the public directory.|
**Example**
......@@ -274,14 +274,14 @@ Obtains a public directory. This API uses a promise to return the result.
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------------------------------- | ---- | ------------ |
| type | [DirectoryType](#directorytype) | Yes | Type of the public directory.|
| Name | Type | Mandatory | Description |
| ---- | ------------------------------- | ---- | ------ |
| type | [DirectoryType](#directorytype) | Yes | Type of the public directory.|
**Return value**
| Type | Description |
| --------------- | ---------------- |
| Type | Description |
| --------------- | -------- |
| Promise<string> | Promise used to return the public directory.|
**Example**
......@@ -310,10 +310,10 @@ Obtains the albums. This API uses an asynchronous callback to return the result.
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | -------------------------------------------- | ---- | --------------------------- |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the albums. |
| callback | AsyncCallback&lt;Array<[Album](#album8)>&gt; | Yes | Callback used to return the albums.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ---------------- |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the albums. |
| callback | AsyncCallback&lt;Array<[Album](#album8)>&gt; | Yes | Callback used to return the albums.|
**Example**
......@@ -345,14 +345,14 @@ Obtains the albums. This API uses a promise to return the result.
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ---------------------------------------- | ---- | ------------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the albums.|
| Name | Type | Mandatory | Description |
| ------- | ---------------------------------------- | ---- | ------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the albums.|
**Return value**
| Type | Description |
| -------------------------------- | ------------- |
| Type | Description |
| -------------------------------- | --------- |
| Promise<Array<[Album](#album8)>> | Promise used to return the albums.|
**Example**
......@@ -380,9 +380,9 @@ Call this API when you no longer need to use the APIs in the **MediaLibrary** in
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | -------------------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the execution result.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ---------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the execution result.|
**Example**
......@@ -404,8 +404,8 @@ Call this API when you no longer need to use the APIs in the **MediaLibrary** in
**Return value**
| Type | Description |
| ------------------- | --------------------------------- |
| Type | Description |
| ------------------- | -------------------- |
| Promise&lt;void&gt; | Promise used to return the execution result.|
**Example**
......@@ -427,10 +427,10 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------------------- | ---- | ------------------------------------------- |
| option | [MediaAssetOption](#mediaassetoption) | Yes | Media asset option. |
| callback | AsyncCallback&lt;string&gt; | Yes | Callback used to return the URI that stores the media asset.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------------------- | ---- | ----------------------- |
| option | [MediaAssetOption](#mediaassetoption) | Yes | Media asset option. |
| callback | AsyncCallback&lt;string&gt; | Yes | Callback used to return the URI that stores the media asset.|
**Example**
......@@ -463,14 +463,14 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------------------------------------- | ---- | -------------- |
| option | [MediaAssetOption](#mediaassetoption) | Yes | Media asset option.|
| Name | Type | Mandatory | Description |
| ------ | ------------------------------------- | ---- | ------- |
| option | [MediaAssetOption](#mediaassetoption) | Yes | Media asset option.|
**Return value**
| Type | Description |
| --------------------- | ---------------------------------------------- |
| Type | Description |
| --------------------- | ---------------------------- |
| Promise&lt;string&gt; | Promise used to return the URI that stores the media asset.|
**Example**
......@@ -502,11 +502,11 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | --------------------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| index | number | Yes | Index of the first image to preview. |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the image preview result. If the preview fails, an error message is returned. |
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ---------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| index | number | Yes | Index of the first image to preview. |
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the image preview result. If the preview fails, an error message is returned. |
**Example**
......@@ -515,10 +515,12 @@ let images = [
"dataability:///media/external/images/media/50",
"dataability:///media/external/images/media/55"
];
/* Online image usage mode
let images = [
"https://media.xxxx.com/image1.jpg",
"https://media.xxxx.com/image2.jpg"
];
*/
let index = 1;
mediaLibrary.getMediaLibrary().startImagePreview(images, index, (err) => {
if (err) {
......@@ -542,10 +544,10 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | --------------------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the image preview result. If the preview fails, an error message is returned. |
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ---------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| callback | AsyncCallback&lt;void&gt; | Yes | Callback used to return the image preview result. If the preview fails, an error message is returned. |
**Example**
......@@ -554,10 +556,12 @@ let images = [
"dataability:///media/external/images/media/50",
"dataability:///media/external/images/media/55"
];
/* Online image usage mode
let images = [
"https://media.xxxx.com/image1.jpg",
"https://media.xxxx.com/image2.jpg"
];
*/
mediaLibrary.getMediaLibrary().startImagePreview(images, (err) => {
if (err) {
console.log("An error occurred when previewing the images.");
......@@ -580,15 +584,15 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------------------- | ---- | --------------------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| index | number | No | Index of the first image to preview. If this parameter is not specified, the default value **0** is used. |
| Name | Type | Mandatory | Description |
| ------ | ------------------- | ---- | ---------------------------------------- |
| images | Array&lt;string&gt; | Yes | URIs of the images to preview. The value can start with either **https://** or **dataability://**.|
| index | number | No | Index of the first image to preview. If this parameter is not specified, the default value **0** is used. |
**Return value**
| Type | Description |
| ------------------- | ------------------------------------------------------- |
| Type | Description |
| ------------------- | ------------------------------- |
| Promise&lt;void&gt; | Promise used to return the image preview result. If the preview fails, an error message is returned.|
**Example**
......@@ -598,10 +602,12 @@ let images = [
"dataability:///media/external/images/media/50",
"dataability:///media/external/images/media/55"
];
/* Online image usage mode
let images = [
"https://media.xxxx.com/image1.jpg",
"https://media.xxxx.com/image2.jpg"
];
*/
let index = 1;
mediaLibrary.getMediaLibrary().startImagePreview(images, index).then(() => {
console.log("Succeeded in previewing the images.");
......@@ -623,10 +629,10 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------------------- | ---- | ------------------------------------------------------- |
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option. |
| callback | AsyncCallback&lt;Array&lt;string&gt;&gt; | Yes | Callback used to return the list of URIs (starting with **dataability://**) that store the selected media assets.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------------------------ |
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option. |
| callback | AsyncCallback&lt;Array&lt;string&gt;&gt; | Yes | Callback used to return the list of URIs (starting with **dataability://**) that store the selected media assets.|
**Example**
......@@ -658,14 +664,14 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | --------------------------------------- | ---- | -------------- |
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option.|
| Name | Type | Mandatory | Description |
| ------ | --------------------------------------- | ---- | ------- |
| option | [MediaSelectOption](#mediaselectoption) | Yes | Media selection option.|
**Return value**
| Type | Description |
| ---------------------------------- | ------------------------------------------------------------ |
| Type | Description |
| ---------------------------------- | ---------------------------------------- |
| Promise&lt;Array&lt;string&gt;&gt; | Promise used to return the list of URIs (starting with **dataability://**) that store the selected media assets.|
**Example**
......@@ -692,29 +698,29 @@ Provides APIs for encapsulating file asset attributes.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Readable| Writable| Description |
| ------------ | ----------------------- | ---- | ---- | ------------------------------------------------------ |
| id | number | Yes | No | File asset ID. |
| uri | string | Yes | No | File asset URI, for example, dataability:///media/image/2. |
| mimeType | string | Yes | No | Extended file attributes. |
| mediaType | [MediaType](#mediatype) | Yes | No | Media type. |
| displayName | string | Yes | Yes | Display file name, including the file name extension. |
| title | string | Yes | Yes | Title in the file. |
| relativePath | string | Yes | Yes | Relative public directory of the file. |
| parent | number | Yes | No | Parent directory ID. |
| size | number | Yes | No | File size, in bytes. |
| dateAdded | number | Yes | No | Date when the file was added. (The value is the number of seconds elapsed since the Epoch time.) |
| dateModified | number | Yes | No | Date when the file was modified. (The value is the number of seconds elapsed since the Epoch time.) |
| dateTaken | number | Yes | No | Date when the file (photo) was taken. (The value is the number of seconds elapsed since the Epoch time.) |
| artist | string | Yes | No | Artist of the file. |
| audioAlbum | string | Yes | No | Audio album. |
| width | number | Yes | No | Image width, in pixels. |
| height | number | Yes | No | Image height, in pixels. |
| orientation | number | Yes | Yes | Image display direction (clockwise rotation angle, for example, 0, 90, or 180, in degrees).|
| duration | number | Yes | No | Duration, in seconds. |
| albumId | number | Yes | No | ID of the album to which the file belongs. |
| albumUri | string | Yes | No | URI of the album to which the file belongs. |
| albumName | string | Yes | No | Name of the album to which the file belongs. |
| Name | Type | Readable | Writable | Description |
| ------------ | ----------------------- | ---- | ---- | --------------------------------------- |
| id | number | Yes | No | File asset ID. |
| uri | string | Yes | No | File asset URI, for example, dataability:///media/image/2.|
| mimeType | string | Yes | No | Extended file attributes. |
| mediaType | [MediaType](#mediatype) | Yes | No | Media type. |
| displayName | string | Yes | Yes | Display file name, including the file name extension. |
| title | string | Yes | Yes | Title in the file. |
| relativePath | string | Yes | Yes | Relative public directory of the file. |
| parent | number | Yes | No | Parent directory ID. |
| size | number | Yes | No | File size, in bytes. |
| dateAdded | number | Yes | No | Date when the file was added. (The value is the number of seconds elapsed since the Epoch time.) |
| dateModified | number | Yes | No | Date when the file was modified. (The value is the number of seconds elapsed since the Epoch time.) |
| dateTaken | number | Yes | No | Date when the file (photo) was taken. (The value is the number of seconds elapsed since the Epoch time.) |
| artist | string | Yes | No | Artist of the file. |
| audioAlbum | string | Yes | No | Audio album. |
| width | number | Yes | No | Image width, in pixels. |
| height | number | Yes | No | Image height, in pixels. |
| orientation | number | Yes | Yes | Image display direction (clockwise rotation angle, for example, 0, 90, or 180, in degrees). |
| duration | number | Yes | No | Duration, in seconds. |
| albumId | number | Yes | No | ID of the album to which the file belongs. |
| albumUri | string | Yes | No | URI of the album to which the file belongs. |
| albumName | string | Yes | No | Name of the album to which the file belongs. |
### isDirectory<sup>8+</sup>
......@@ -729,9 +735,9 @@ Checks whether this file asset is a directory. This API uses an asynchronous cal
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------- | ---- | ----------------------------- |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is a directory.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------- | ---- | ------------------- |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is a directory.|
**Example**
......@@ -764,8 +770,8 @@ Checks whether this file asset is a directory. This API uses a promise to return
**Return value**
| Type | Description |
| ---------------------- | ---------------------------------------- |
| Type | Description |
| ---------------------- | ---------------------------- |
| Promise&lt;boolean&gt; | Promise used to return whether the file asset is a directory.|
**Example**
......@@ -801,9 +807,9 @@ Commits the modification of this file asset to the database. This API uses an as
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | ---------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ----- |
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
**Example**
......@@ -837,8 +843,8 @@ Commits the modification of this file asset to the database. This API uses a pro
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Type | Description |
| ------------------- | ---------- |
| Promise&lt;void&gt; | Void promise.|
**Example**
......@@ -871,10 +877,10 @@ Opens this file asset. This API uses an asynchronous callback to return the resu
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------- | ---- | -------------------------------------------------------- |
| mode | string | Yes | Mode of opening the file, for example, **r** (read-only), **w** (write-only), and **rw** (read-write).|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback used to return the file handle. |
| Name | Type | Mandatory | Description |
| -------- | --------------------------- | ---- | ----------------------------------- |
| mode | string | Yes | Mode of opening the file, for example, **r** (read-only), **w** (write-only), and **rw** (read-write).|
| callback | AsyncCallback&lt;number&gt; | Yes | Callback used to return the file handle. |
**Example**
......@@ -906,14 +912,14 @@ Opens this file asset. This API uses a promise to return the result.
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | -------------------------------------------------------- |
| mode | string | Yes | Mode of opening the file, for example, **r** (read-only), **w** (write-only), and **rw** (read-write).|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ----------------------------------- |
| mode | string | Yes | Mode of opening the file, for example, **r** (read-only), **w** (write-only), and **rw** (read-write).|
**Return value**
| Type | Description |
| --------------------- | ------------------- |
| Type | Description |
| --------------------- | ------------- |
| Promise&lt;number&gt; | Promise used to return the file handle.|
**Example**
......@@ -946,10 +952,10 @@ Closes this file asset. This API uses an asynchronous callback to return the res
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | ---------- |
| fd | number | Yes | File descriptor.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ----- |
| fd | number | Yes | File descriptor.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
**Example**
......@@ -987,14 +993,14 @@ Closes this file asset. This API uses a promise to return the result.
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | ------ | ---- | ---------- |
| fd | number | Yes | File descriptor.|
| Name | Type | Mandatory | Description |
| ---- | ------ | ---- | ----- |
| fd | number | Yes | File descriptor.|
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Type | Description |
| ------------------- | ---------- |
| Promise&lt;void&gt; | Void promise.|
**Example**
......@@ -1034,9 +1040,9 @@ Obtains the thumbnail of this file asset. This API uses an asynchronous callback
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------------------- | ---- | ------------------------ |
| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes | Callback used to return the pixel map of the thumbnail.|
| Name | Type | Mandatory | Description |
| -------- | ----------------------------------- | ---- | ---------------- |
| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes | Callback used to return the pixel map of the thumbnail.|
**Example**
......@@ -1069,10 +1075,10 @@ Obtains the thumbnail of this file asset, with the thumbnail size passed. This A
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ----------------------------------- | ---- | ------------------------ |
| size | [Size](#size8) | Yes | Size of the thumbnail. |
| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes | Callback used to return the pixel map of the thumbnail.|
| Name | Type | Mandatory | Description |
| -------- | ----------------------------------- | ---- | ---------------- |
| size | [Size](#size8) | Yes | Size of the thumbnail. |
| callback | AsyncCallback&lt;image.PixelMap&gt; | Yes | Callback used to return the pixel map of the thumbnail.|
**Example**
......@@ -1105,14 +1111,14 @@ Obtains the thumbnail of this file asset, with the thumbnail size passed. This A
**Parameters**
| Name| Type | Mandatory| Description |
| ------ | -------------- | ---- | ---------- |
| size | [Size](#size8) | No | Size of the thumbnail.|
| Name | Type | Mandatory | Description |
| ---- | -------------- | ---- | ----- |
| size | [Size](#size8) | No | Size of the thumbnail.|
**Return value**
| Type | Description |
| ----------------------------- | --------------------------- |
| Type | Description |
| ----------------------------- | --------------------- |
| Promise&lt;image.PixelMap&gt; | Promise to return the pixel map of the thumbnail.|
**Example**
......@@ -1146,10 +1152,10 @@ Favorites or unfavorites this file asset. This API uses an asynchronous callback
**Parameters**
| Name | Type | Mandatory| Description |
| ---------- | ------------------------- | ---- | ---------------------------------------------------------- |
| isFavorite | boolean | Yes | Whether to favorite or unfavorite the file. The value **true** means to favorite the file, and **false** means to unfavorite the file.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback. |
| Name | Type | Mandatory | Description |
| ---------- | ------------------------- | ---- | ---------------------------------- |
| isFavorite | boolean | Yes | Whether to favorite or unfavorite the file. The value **true** means to favorite the file, and **false** means to unfavorite the file.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback. |
**Example**
......@@ -1182,14 +1188,14 @@ Favorites or unfavorites this file asset. This API uses a promise to return the
**Parameters**
| Name | Type | Mandatory| Description |
| ---------- | ------- | ---- | ---------------------------------------------------------- |
| isFavorite | boolean | Yes | Whether to favorite or unfavorite the file. The value **true** means to favorite the file, and **false** means to unfavorite the file.|
| Name | Type | Mandatory | Description |
| ---------- | ------- | ---- | ---------------------------------- |
| isFavorite | boolean | Yes | Whether to favorite or unfavorite the file. The value **true** means to favorite the file, and **false** means to unfavorite the file.|
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Type | Description |
| ------------------- | ---------- |
| Promise&lt;void&gt; | Void promise.|
**Example**
......@@ -1225,9 +1231,9 @@ Checks whether this file asset is favorited. This API uses an asynchronous callb
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------- | ---- | ---------------------- |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is favorited.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------- | ---- | ----------- |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is favorited.|
**Example**
......@@ -1264,8 +1270,8 @@ Checks whether this file asset is favorited. This API uses a promise to return t
**Return value**
| Type | Description |
| ---------------------- | ----------------------------- |
| Type | Description |
| ---------------------- | ------------------ |
| Promise&lt;boolean&gt; | Promise used to return whether the file asset is favorited.|
**Example**
......@@ -1303,10 +1309,10 @@ Files in the trash are not actually deleted. You can set **isTrash** to **false*
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | ------------------ |
| isTrash | boolean | Yes | Whether to move the file asset to the trash. The value **true** means to move the file asset to the trash, and **false** means the opposite.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback. |
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | --------- |
| isTrash | boolean | Yes | Whether to move the file asset to the trash. The value **true** means to move the file asset to the trash, and **false** means the opposite.|
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback. |
**Example**
......@@ -1342,14 +1348,14 @@ Files in the trash are not actually deleted. You can set **isTrash** to **false*
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ------- | ---- | ------------------ |
| isTrash | boolean | Yes | Whether to move the file asset to the trash. The value **true** means to move the file asset to the trash, and **false** means the opposite.|
| Name | Type | Mandatory | Description |
| ------- | ------- | ---- | --------- |
| isTrash | boolean | Yes | Whether to move the file asset to the trash. The value **true** means to move the file asset to the trash, and **false** means the opposite.|
**Return value**
| Type | Description |
| ------------------- | ------------- |
| Type | Description |
| ------------------- | ---------- |
| Promise&lt;void&gt; | Void promise.|
**Example**
......@@ -1385,9 +1391,9 @@ Checks whether this file asset is in the trash. This API uses an asynchronous ca
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------- | ---- | ------------------------------ |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is in the trash. If the file asset is in the trash, **true** will be returned; otherwise, **false** will be returned.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------- | ---- | --------------- |
| callback | AsyncCallback&lt;boolean&gt; | Yes | Callback used to return whether the file asset is in the trash. If the file asset is in the trash, **true** will be returned; otherwise, **false** will be returned.|
**Example**
......@@ -1429,8 +1435,8 @@ Checks whether this file asset is in the trash. This API uses a promise to retur
**Return value**
| Type | Description |
| ------------------- | --------------------------------- |
| Type | Description |
| ------------------- | -------------------- |
| Promise&lt;void&gt; | Promise used to return whether the file asset is in the trash. If the file asset is in the trash, **true** will be returned; otherwise, **false** will be returned.|
**Example**
......@@ -1468,8 +1474,8 @@ Obtains the total number of files in the result set.
**Return value**
| Type | Description |
| ------ | ---------------- |
| Type | Description |
| ------ | -------- |
| number | Total number of files.|
**Example**
......@@ -1497,8 +1503,8 @@ Checks whether the cursor is in the last row of the result set.
**Return value**
| Type | Description |
| ------- | ----------------------------------------------------------- |
| Type | Description |
| ------- | ---------------------------------- |
| boolean | Returns **true** if the cursor is in the last row of the result set; returns *false** otherwise.|
**Example**
......@@ -1564,9 +1570,9 @@ Obtains the first file asset in the result set. This API uses an asynchronous ca
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------- | ---- | ------------------------------------------- |
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the first file asset.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | -------------------------- |
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the first file asset.|
**Example**
......@@ -1600,8 +1606,8 @@ Obtains the first file asset in the result set. This API uses a promise to retur
**Return value**
| Type | Description |
| --------------------------------------- | ------------------------ |
| Type | Description |
| --------------------------------------- | -------------------- |
| Promise&lt;[FileAsset](#fileasset8)&gt; | Promise used to return the file asset.|
**Example**
......@@ -1636,9 +1642,9 @@ Obtains the next file asset in the result set. This API uses an asynchronous cal
**Parameters**
| Name | Type | Mandatory| Description |
| --------- | --------------------------------------------- | ---- | ----------------------------------------- |
| callbacke | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the next file asset.|
| Name | Type | Mandatory | Description |
| --------- | ---------------------------------------- | ---- | ------------------------- |
| callbacke | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the next file asset.|
**Example**
......@@ -1674,8 +1680,8 @@ Obtains the next file asset in the result set. This API uses a promise to return
**Return value**
| Type | Description |
| --------------------------------------- | ----------------- |
| Type | Description |
| --------------------------------------- | ------------- |
| Promise&lt;[FileAsset](#fileasset8)&gt; | Promise used to return the next file asset.|
**Example**
......@@ -1706,9 +1712,9 @@ Obtains the last file asset in the result set. This API uses an asynchronous cal
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------- | ---- | --------------------------- |
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the last file asset.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------ |
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the last file asset.|
**Example**
......@@ -1742,8 +1748,8 @@ Obtains the last file asset in the result set. This API uses a promise to return
**Return value**
| Type | Description |
| --------------------------------------- | ----------------- |
| Type | Description |
| --------------------------------------- | ------------- |
| Promise&lt;[FileAsset](#fileasset8)&gt; | Promise used to return the next file asset.|
**Example**
......@@ -1772,10 +1778,10 @@ Obtains a file asset with the specified index in the result set. This API uses a
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------- | ---- | --------------------------- |
| index | number | Yes | Index of the file asset to obtain. The value starts from **0**.|
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the last file asset.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------ |
| index | number | Yes | Index of the file asset to obtain. The value starts from **0**. |
| callback | AsyncCallback&lt;[FileAsset](#fileasset8)&gt; | Yes | Callback used to return the last file asset.|
**Example**
......@@ -1811,14 +1817,14 @@ Obtains a file asset with the specified index in the result set. This API uses a
**Parameters**
| Name | Type | Mandatory| Description |
| ----- | ------ | ---- | --------------------------- |
| index | number | Yes | Index of the file asset to obtain. The value starts from **0**.|
| Name | Type | Mandatory | Description |
| ----- | ------ | ---- | -------------- |
| index | number | Yes | Index of the file asset to obtain. The value starts from **0**.|
**Return value**
| Type | Description |
| --------------------------------------- | ----------------- |
| Type | Description |
| --------------------------------------- | ------------- |
| Promise&lt;[FileAsset](#fileasset8)&gt; | Promise used to return the next file asset.|
**Example**
......@@ -1855,9 +1861,9 @@ Obtains all the file assets in the result set. This API uses an asynchronous cal
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ---------------------------------------------- | ---- | ------------------------------- |
| callback | AsyncCallback<Array<[FileAsset](#fileasset8)>> | Yes | Callback used to return the file assets.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | -------------------- |
| callback | AsyncCallback<Array<[FileAsset](#fileasset8)>> | Yes | Callback used to return the file assets.|
**Example**
......@@ -1891,8 +1897,8 @@ Obtains all the file assets in the result set. This API uses a promise to return
**Return value**
| Type | Description |
| ---------------------------------------- | --------------------- |
| Type | Description |
| ---------------------------------------- | --------------- |
| Promise<Array<[FileAsset](#fileasset8)>> | Promise used to return the file assets.|
**Example**
......@@ -1919,15 +1925,15 @@ Provides APIs to implement a physical album.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type| Readable| Writable| Description |
| ------------ | ------ | ---- | ---- | -------------- |
| albumId | number | Yes | No | Album ID. |
| albumName | string | Yes | Yes | Album name. |
| albumUri | string | Yes | No | Album URI. |
| dateModified | number | Yes | No | Date when the album was modified. |
| count | number | Yes | No | Number of files in the album.|
| relativePath | string | Yes | No | Relative path of the album. |
| coverUri | string | Yes | No | URI of the cover file of the album. |
| Name | Type | Readable | Writable | Description |
| ------------ | ------ | ---- | ---- | ------- |
| albumId | number | Yes | No | Album ID. |
| albumName | string | Yes | Yes | Album name. |
| albumUri | string | Yes | No | Album URI. |
| dateModified | number | Yes | No | Date when the album was modified. |
| count | number | Yes | No | Number of files in the album.|
| relativePath | string | Yes | No | Relative path of the album. |
| coverUri | string | Yes | No | URI of the cover file of the album.|
### commitModify<sup>8+</sup>
......@@ -1941,9 +1947,9 @@ Commits the modification of the album attributes to the database. This API uses
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | ------------------------- | ---- | ---------- |
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
| Name | Type | Mandatory | Description |
| -------- | ------------------------- | ---- | ----- |
| callback | AsyncCallback&lt;void&gt; | Yes | Void callback.|
**Example**
......@@ -1978,8 +1984,8 @@ Commits the modification of the album attributes to the database. This API uses
**Return value**
| Type | Description |
| ------------------- | ----------------- |
| Type | Description |
| ------------------- | ------------ |
| Promise&lt;void&gt; | Void promise.|
**Example**
......@@ -2013,10 +2019,10 @@ Obtains the file assets in this album. This API uses an asynchronous callback to
**Parameters**
| Name | Type | Mandatory| Description |
| -------- | --------------------------------------------------- | ---- | --------------------------------- |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files. |
| callback | AsyncCallback<[FetchFileResult](#fetchfileresult8)> | Yes | Callback used to return the file assets.|
| Name | Type | Mandatory | Description |
| -------- | ---------------------------------------- | ---- | ------------------------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | Yes | Options for fetching the files. |
| callback | AsyncCallback<[FetchFileResult](#fetchfileresult8)> | Yes | Callback used to return the file assets.|
**Example**
......@@ -2047,14 +2053,14 @@ Obtains the file assets in this album. This API uses a promise to return the res
**Parameters**
| Name | Type | Mandatory| Description |
| ------- | ---------------------------------------- | ---- | ------------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | No | Options for fetching the files.|
| Name | Type | Mandatory | Description |
| ------- | ---------------------------------------- | ---- | ------ |
| options | [MediaFetchOptions](#mediafetchoptions8) | No | Options for fetching the files.|
**Return value**
| Type | Description |
| --------------------------------------------- | ----------------------- |
| Type | Description |
| ---------------------------------------- | ------------------- |
| Promise<[FetchFileResult](#fetchfileresult8)> | Promise used to return the file assets.|
**Example**
......@@ -2081,12 +2087,12 @@ Describes information about a registered device.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Readable| Writable| Description |
| ---------- | ---------- | ---- | ---- | ---------------- |
| deviceName | string | Yes | No | Name of the registered device. |
| networkId | string | Yes | No | Network ID of the registered device.|
| deviceType | DeviceType | Yes | No | Type of the registered device. |
| isOnline | boolean | Yes | No | Whether the registered device is online. |
| Name | Type | Readable | Writable | Description |
| ---------- | ---------- | ---- | ---- | --------- |
| deviceName | string | Yes | No | Name of the registered device. |
| networkId | string | Yes | No | Network ID of the registered device.|
| deviceType | DeviceType | Yes | No | Type of the registered device. |
| isOnline | boolean | Yes | No | Whether the registered device is online. |
......@@ -2097,12 +2103,12 @@ Enumerates media types.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Default Value | Description|
| ----- | ------ | ---- |
| FILE | 0 | File.|
| IMAGE | 1 | Image.|
| VIDEO | 2 | Video.|
| AUDIO | 3 | Audio.|
| Name | Default Value | Description |
| ----- | ---- | ---- |
| FILE | 0 | File. |
| IMAGE | 1 | Image. |
| VIDEO | 2 | Video. |
| AUDIO | 3 | Audio. |
FileKey
-------
......@@ -2111,27 +2117,27 @@ Enumerates key file information.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Default Value | Description |
| ------------- | ------------------- | ---------------------------------------------------------- |
| ID | file_id | File ID. |
| RELATIVE_PATH | relative_path | Relative public directory of the file. |
| DISPLAY_NAME | display_name | Display file name. |
| PARENT | parent | Parent directory ID. |
| MIME_TYPE | mime_type | Extended file attributes. |
| MEDIA_TYPE | media_type | Media type. |
| SIZE | size | File size, in bytes. |
| DATE_ADDED | date_added | Date when the file was added. (The value is the number of seconds elapsed since the Epoch time.) |
| DATE_MODIFIED | date_modified | Date when the file was modified. (The value is the number of seconds elapsed since the Epoch time.) |
| DATE_TAKEN | date_taken | Date when the file (photo) was taken. (The value is the number of seconds elapsed since the Epoch time.) |
| TITLE | title | Title in the file. |
| ARTIST | artist | Artist of the file. |
| AUDIOALBUM | audio_album | Audio album. |
| DURATION | duration | Duration, in seconds. |
| WIDTH | width | Image width, in pixels. |
| HEIGHT | height | Image height, in pixels. |
| Name | Default Value | Description |
| ------------- | ------------------- | -------------------------------- |
| ID | file_id | File ID. |
| RELATIVE_PATH | relative_path | Relative public directory of the file. |
| DISPLAY_NAME | display_name | Display file name. |
| PARENT | parent | Parent directory ID. |
| MIME_TYPE | mime_type | Extended file attributes. |
| MEDIA_TYPE | media_type | Media type. |
| SIZE | size | File size, in bytes. |
| DATE_ADDED | date_added | Date when the file was added. (The value is the number of seconds elapsed since the Epoch time.) |
| DATE_MODIFIED | date_modified | Date when the file was modified. (The value is the number of seconds elapsed since the Epoch time.) |
| DATE_TAKEN | date_taken | Date when the file (photo) was taken. (The value is the number of seconds elapsed since the Epoch time.) |
| TITLE | title | Title in the file. |
| ARTIST | artist | Artist of the file. |
| AUDIOALBUM | audio_album | Audio album. |
| DURATION | duration | Duration, in seconds. |
| WIDTH | width | Image width, in pixels. |
| HEIGHT | height | Image height, in pixels. |
| ORIENTATION | orientation | Image display direction (clockwise rotation angle, for example, 0, 90, and 180, in degrees).|
| ALBUM_ID | bucket_id | ID of the album to which the file belongs. |
| ALBUM_NAME | bucket_display_name | Name of the album to which the file belongs. |
| ALBUM_ID | bucket_id | ID of the album to which the file belongs. |
| ALBUM_NAME | bucket_display_name | Name of the album to which the file belongs. |
DirectoryType
-------------
......@@ -2140,14 +2146,14 @@ Enumerates directory types.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Default Value | Description |
| ------------- | ------ | ------------------ |
| DIR_CAMERA | 0 | Directory of camera files.|
| DIR_VIDEO | 1 | Directory of video files. |
| DIR_IMAGE | 2 | Directory of image files. |
| DIR_AUDIO | 3 | Directory of audio files. |
| DIR_DOCUMENTS | 4 | Directory of documents. |
| DIR_DOWNLOAD | 5 | Download directory. |
| Name | Default Value | Description |
| ------------- | ---- | ------------ |
| DIR_CAMERA | 0 | Directory of camera files.|
| DIR_VIDEO | 1 | Directory of video files. |
| DIR_IMAGE | 2 | Directory of image files. |
| DIR_AUDIO | 3 | Directory of audio files. |
| DIR_DOCUMENTS | 4 | Directory of documents. |
| DIR_DOWNLOAD | 5 | Download directory. |
DeviceType
-----------
......@@ -2156,15 +2162,15 @@ Enumerates device types.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Default Value | Description |
| ------------ | ------ | ---------- |
| TYPE_UNKNOWN | 0 | Unknown.|
| TYPE_LAPTOP | 1 | Laptop.|
| TYPE_PHONE | 2 | Phone. |
| TYPE_TABLET | 3 | Tablet. |
| TYPE_WATCH | 4 | Smart watch. |
| TYPE_CAR | 5 | Vehicle-mounted device. |
| TYPE_TV | 6 | TV. |
| Name | Default Value | Description |
| ------------ | ---- | ----- |
| TYPE_UNKNOWN | 0 | Unknown.|
| TYPE_LAPTOP | 1 | Laptop.|
| TYPE_PHONE | 2 | Phone. |
| TYPE_TABLET | 3 | Tablet. |
| TYPE_WATCH | 4 | Smart watch. |
| TYPE_CAR | 5 | Vehicle-mounted device. |
| TYPE_TV | 6 | TV. |
## MediaFetchOptions<sup>8+</sup>
......@@ -2172,23 +2178,23 @@ Describes options for fetching media files.
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Readable| Writable| Mandatory| Description |
| ------------- | ------------------- | ---- | ---- | ---- | ------------------------------------------------------------ |
| selections | string | Yes | Yes | Yes | Conditions for fetching files. The enumerated values in [FileKey](#filekey) are used as the column names of the conditions. Example:<br>selections: mediaLibrary.FileKey.MEDIA_TYPE + '= ? OR' +mediaLibrary.FileKey.MEDIA_TYPE + '= ?',|
| selectionArgs | Array&lt;string&gt; | Yes | Yes | Yes | Value of the condition, which corresponds to the value of the condition column in **selections**.<br>Example:<br>selectionArgs: [mediaLibrary.MediaType.IMAGE.toString(), mediaLibrary.MediaType.VIDEO.toString()], |
| order | string | Yes | Yes | No | Sorting mode of the search results, which can be ascending or descending. The enumerated values in [FileKey](#filekey) are used as the columns for sorting the search results. Example:<br>Ascending: order: mediaLibrary.FileKey.DATE_ADDED + " AESC"<br>Descending: order: mediaLibrary.FileKey.DATE_ADDED + " DESC"|
| uri | string | Yes | Yes | No | File URI. |
| networkId | string | Yes | Yes | No | Network ID of the registered device. |
| extendArgs | string | Yes | Yes | No | Extended parameters for fetching the files. Currently, no extended parameters are available. |
| Name | Type | Readable | Writable | Mandatory | Description |
| ------------- | ------------------- | ---- | ---- | ---- | ---------------------------------------- |
| selections | string | Yes | Yes | Yes | Conditions for fetching files. The enumerated values in [FileKey](#filekey) are used as the column names of the conditions. Example:<br>selections: mediaLibrary.FileKey.MEDIA_TYPE + '= ? OR' +mediaLibrary.FileKey.MEDIA_TYPE + '= ?',|
| selectionArgs | Array&lt;string&gt; | Yes | Yes | Yes | Value of the condition, which corresponds to the value of the condition column in **selections**.<br>Example:<br>selectionArgs: [mediaLibrary.MediaType.IMAGE.toString(), mediaLibrary.MediaType.VIDEO.toString()], |
| order | string | Yes | Yes | No | Sorting mode of the search results, which can be ascending or descending. The enumerated values in [FileKey](#filekey) are used as the columns for sorting the search results. Example:<br>Ascending: order: mediaLibrary.FileKey.DATE_ADDED + " AESC"<br>Descending: order: mediaLibrary.FileKey.DATE_ADDED + " DESC"|
| uri | string | Yes | Yes | No | File URI. |
| networkId | string | Yes | Yes | No | Network ID of the registered device. |
| extendArgs | string | Yes | Yes | No | Extended parameters for fetching the files. Currently, no extended parameters are available. |
## Size<sup>8+</sup>
Describes the image size.
| Name | Type | Readable| Writable| Description |
| ------ | ------ | ---- | ---- | ---------------- |
| width | number | Yes | Yes | Image width, in pixels.|
| height | number | Yes | Yes | Image height, in pixels.|
| Name | Type | Readable | Writable | Description |
| ------ | ------ | ---- | ---- | -------- |
| width | number | Yes | Yes | Image width, in pixels.|
| height | number | Yes | Yes | Image height, in pixels.|
## MediaAssetOption
......@@ -2199,11 +2205,11 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Mandatory| Description |
| ------------ | ------ | ---- | ------------------------------------------------------------ |
| src | string | Yes | URI of the media library. |
| mimeType | string | Yes | Multipurpose Internet Mail Extensions (MIME) type of the media.<br>Example: 'image/\*' and 'video/\*'.|
| relativePath | string | No | Custom path for storing media assets. If this parameter is unspecified, media assets are stored in the default path. For example, if you set this parameter to **imageDir/image2/**, the media assets will be stored in **default/imageDir/image2/**, where **default** represents the default path.|
| Name | Type | Mandatory | Description |
| ------------ | ------ | ---- | ---------------------------------------- |
| src | string | Yes | URI of the media library. |
| mimeType | string | Yes | Multipurpose Internet Mail Extensions (MIME) type of the media.<br>Example: 'image/\*' and 'video/\*'.|
| relativePath | string | No | Custom path for storing media assets. If this parameter is unspecified, media assets are stored in the default path. For example, if you set this parameter to **imageDir/image2/**, the media assets will be stored in **default/imageDir/image2/**, where **default** represents the default path.|
## MediaSelectOption
......@@ -2213,7 +2219,7 @@ This API is defined but not implemented in OpenHarmony 3.1 Release. It will be a
**System capability**: SystemCapability.Multimedia.MediaLibrary.Core
| Name | Type | Mandatory| Description |
| ----- | ------ | ---- | ------------------------------ |
| type | string | Yes | Media type, which can be **image** and **video**.|
| count | number | Yes | Maximum number of media assets that can be selected. |
| Name | Type | Mandatory | Description |
| ----- | ------ | ---- | -------------------- |
| type | string | Yes | Media type, which can be **image** and **video**.|
| count | number | Yes | Maximum number of media assets that can be selected. |
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