The **appAccount** module provides APIs for adding, deleting, modifying, and querying app account information, and supports inter-app authentication and distributed data synchronization.
...
...
@@ -4883,7 +4883,7 @@ Creates an app account implicitly based on the specified account owner. This API
| options | [CreateAccountImplicitlyOptions](#createaccountimplicitlyoptions9) | Yes | Options for implicitly creating the account. |
| callback | [AuthCallback](#authcallback9) | Yes | Authenticator callback invoked to return the result.|
The **cardEmulation** module implements Near-Field Communication (NFC) card emulation. You can use the APIs provided by this module to determine the card emulation type supported and implement Host-based Card Emulation (HCE).
...
...
@@ -16,7 +16,11 @@ import cardEmulation from '@ohos.nfc.cardEmulation';
@@ -44,68 +63,44 @@ Checks whether a certain type of card emulation is supported.
| -------- | -------- |
| boolean | Returns **true** if the card emulation type is supported; returns **false** otherwise.|
## HceService<sup>8+</sup>
Implements HCE, including receiving Application Protocol Data Units (APDUs) from the peer card reader and sending a response. Before using HCE-related APIs, check whether the device supports HCE.
## hasHceCapability<sup>9+</sup>
### startHCE<sup>8+</sup>
hasHceCapability(): boolean
startHCE(aidList: string[]): boolean
Checks whether HCE is supported.
Starts HCE, including setting the application to be foreground preferred and dynamically registering the application identifier (AID) list.
| type | string | Yes | Event type to subscribe to. The value is **hceCmd**. |
| callback | AsyncCallback<number[]> | Yes | Callback invoked to return the APDU. Each number in the callback is a hexadecimal number ranging from **0x00** to **0xFF**.|
| elementName | [ElementName](js-apis-bundleManager-elementName.md#elementname) | Yes| Application description, which consists of the bundle name and component name.|
| type | [CardType](#cardtype9) | Yes| Card emulation service type.|
| responseApdu | number[] | Yes | Response APDU sent to the peer card reader. Each number of the APDU is a hexadecimal number ranging from **0x00** to **0xFF**.|
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the application is the default payment application; returns **false** otherwise.|
**Example**
...
...
@@ -118,23 +113,16 @@ if (!isHceSupported) {
return;
}
// The device supports HCE and transimits APDUs with the remote NFC reader.
The **connectedTag** module provides APIs for using active tags. You can use the APIs to initialize the active tag chip and read and write active tags.
...
...
@@ -129,7 +129,7 @@ Writes data to this active tag. This API uses a promise to return the result.
The **nfcController** module provides APIs for opening and closing Near-Field Communication (NFC) and reading the NFC state.
> **NOTE**<br>
> **NOTE**
>
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use canIUse("SystemCapability.Communication.NFC.Core").
The **nfcTag** module provides APIs for managing Near-Field Communication (NFC) tags.
...
...
@@ -48,11 +48,11 @@ Before developing applications related to tag read and write, you must declare N
}
```
> **CAUTION**<br>
1. The **actions** field is mandatory. It must be **ohos.nfc.tag.action.TAG_FOUND** and cannot be changed.
2. The **name** field under **metadata** is mandatory. It must be **tag-tech** and cannot be changed.
3. The **value** field under **metadata** is mandatory. It can be **NfcA**, **NfcB**, **NfcF**, **NfcV**, **IsoDep**, **Ndef**, **MifareClassic**, **MifareUL**, **NdefFormatable** or any of their combinations. Incorrect settings of this field will cause a parsing failure.
4. The **name** field under **requestPermissions** is mandatory. It must be **ohos.permission.NFC_TAG** and cannot be changed.
>
> - The **actions** field is mandatory. It must be **ohos.nfc.tag.action.TAG_FOUND** and cannot be changed.
> - The **name** field under **metadata** is mandatory. It must be **tag-tech** and cannot be changed.
> - The **value** field under **metadata** is mandatory. It can be **NfcA**, **NfcB**, **NfcF**, **NfcV**, **IsoDep**, **Ndef**, **MifareClassic**, **MifareUL**, **NdefFormatable** or any of their combinations. Incorrect settings of this field will cause a parsing failure.
> - The **name** field under **requestPermissions** is mandatory. It must be **ohos.permission.NFC_TAG** and cannot be changed.
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
**Return value**
...
...
@@ -136,15 +163,50 @@ Obtains an **NfcATag** object, which allows access to the tags that use the NFC-
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
**Return value**
...
...
@@ -152,15 +214,50 @@ Obtains an **NfcBTag** object, which allows access to the tags that use the NFC-
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
**Return value**
...
...
@@ -168,15 +265,50 @@ Obtains an **NfcFTag** object, which allows access to the tags that use the NFC-
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
| taginfo | [TagInfo](#taginfo) | Yes| Tag information including the technology type and related parameters, which are obtained from **tag.getTagInfo(want: Want)**.
**Return value**
...
...
@@ -184,13 +316,21 @@ Obtains an **NfcVTag** object, which allows access to the tags that use the NFC-
Creates an NDEF message from raw byte data. The data must comply with the NDEF record format. Otherwise, the NDE record list contained in the **NdefMessage** object will be empty.
| uid<sup>9+</sup> | number[] | Yes| No| Tag unique identifier (UID), which consists of hexadecimal numbers ranging from **0x00** to **0xFF**.|
| technology<sup>9+</sup> | number[] | Yes| No| Supported technologies. Each number is a constant indicating the supported technology.|
| supportedProfiles | number[] | Yes| No| Supported profiles. This parameter is not supported since API version 9. Use [tag.TagInfo#technology](#taginfo) instead.|
| supportedProfiles | number[] | Yes| No| Supported profiles. This parameter is not supported since API version 9. Use [technology](#taginfo).|
| extrasData<sup>9+</sup> | [PacMap](js-apis-inner-ability-dataAbilityHelper.md#pacmap)[] | Yes| No| Extended attribute value of the tag technology.<br>**System API**: This is a system API.|
| tagRfDiscId<sup>9+</sup> | number | Yes| No| ID allocated when the tag is discovered.<br>**System API**: This is a system API.|
| remoteTagService<sup>9+</sup> | [rpc.RemoteObject](js-apis-rpc.md#remoteobject) | Yes| No| Remote object of the NFC service process used for interface communication between the client and the service.<br>**System API**: This is a system API.|
## NdefRecord<sup>9+</sup>
Defines an NDEF record. For details, see *NFCForum-TS-NDEF_1.0*.
The **osAccount** module provides basic capabilities for managing OS accounts, including adding, deleting, querying, setting, subscribing to, and enabling an OS account.
...
...
@@ -155,7 +155,7 @@ Checks whether multiple OS accounts are supported. This API uses an asynchronous
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. The value **true** means multiple OS accounts are supported; the value false means the opposite.|
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. The value **true** means multiple OS accounts are supported; the value **false** means the opposite.|
**Error codes**
...
...
@@ -192,7 +192,7 @@ Checks whether multiple OS accounts are supported. This API uses a promise to re
| Promise<boolean> | Promise used to return the result. The value **true** means multiple OS accounts are supported; the value false means the opposite.|
| Promise<boolean> | Promise used to return the result. The value **true** means multiple OS accounts are supported; the value **false** means the opposite.|
**Error codes**
...
...
@@ -483,7 +483,7 @@ Checks whether this OS account has been verified. This API uses an asynchronous
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. If true is returned, the current account has been verified. If false is returned, the current account has not been verified.|
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. The value **true** means the OS account has been verified; the value **false** means the opposite.|
**Error codes**
...
...
@@ -1690,7 +1690,7 @@ Creates an OS account and associates it with the specified domain account. This
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. The value **true** means multiple OS accounts are supported; the value false means the opposite.|
| callback | AsyncCallback<boolean> | Yes | Callback invoked to return the result. The value **true** means multiple OS accounts are supported; the value **false** means the opposite.|
**Example**
...
...
@@ -2756,7 +2757,7 @@ Checks whether multiple OS accounts are supported. This API uses a promise to re
| Promise<boolean> | Promise used to return the result. The value **true** means multiple OS accounts are supported; the value false means the opposite.|
| Promise<boolean> | Promise used to return the result. The value **true** means multiple OS accounts are supported; the value **false** means the opposite.|
**Example**
...
...
@@ -3694,7 +3695,7 @@ Obtains the OS account ID based on the SN. This API uses an asynchronous callbac
The **rpc** module implements communication between processes, including inter-process communication (IPC) on a single device and remote procedure call (RPC) between processes on difference devices. IPC is implemented based on the Binder driver, and RPC is based on the DSoftBus driver.
The **RPC** module implements communication between processes, including inter-process communication (IPC) on a single device and remote procedure call (RPC) between processes on difference devices. IPC is implemented based on the Binder driver, and RPC is based on the DSoftBus driver.
> **NOTE**
>
> The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
> - The initial APIs of this module are supported since API version 7. Newly added APIs will be marked with a superscript to indicate their earliest API version.
>
> This module supports return of error codes since API version 9.
> - This module supports return of error codes since API version 9.
## Modules to Import
...
...
@@ -15,7 +14,6 @@ The **rpc** module implements communication between processes, including inter-p
import rpc from '@ohos.rpc';
```
## ErrorCode<sup>9+</sup>
The APIs of this module return exceptions since API version 9. The following table lists the error codes.
...
...
@@ -42,11 +40,11 @@ The APIs of this module return exceptions since API version 9. The following tab
## MessageSequence<sup>9+</sup>
Provides APIs for reading and writing data in specific format. During RPC, the sender can use the **write()** method provided by **MessageSequence** to write data in specific format to a **MessageSequence** object. The receiver can use the **read()** method provided by **MessageSequence** to read data in specific format from a **MessageSequence** object. The data formats include basic data types and arrays, IPC objects, interface tokens, and custom sequenceable objects.
Provides APIs for reading and writing data in specific format. During RPC or IPC, the sender can use the **write()** method provided by **MessageSequence** to write data in specific format to a **MessageSequence** object. The receiver can use the **read()** method provided by **MessageSequence** to read data in specific format from a **MessageSequence** object. The data formats include basic data types and arrays, IPC objects, interface tokens, and custom sequenceable objects.
### create
create(): MessageSequence
static create(): MessageSequence
Creates a **MessageSequence** object. This API is a static method.
...
...
@@ -60,7 +58,7 @@ The APIs of this module return exceptions since API version 9. The following tab
**Example**
```
```ts
letdata=rpc.MessageSequence.create();
console.log("RpcClient: data is "+data);
```
...
...
@@ -75,7 +73,7 @@ Reclaims the **MessageSequence** object that is no longer used.
**Example**
```
```ts
letreply=rpc.MessageSequence.create();
reply.reclaim();
```
...
...
@@ -105,7 +103,7 @@ For details about the error codes, see [RPC Error Codes](../errorcodes/errorcode
**Example**
```
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -146,7 +144,7 @@ For details about the error codes, see [RPC Error Codes](../errorcodes/errorcode
**Example**
```
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -187,7 +185,7 @@ For details about the error codes, see [RPC Error Codes](../errorcodes/errorcode
**Example**
```
```ts
letdata=rpc.MessageSequence.create();
try{
data.writeInterfaceToken("aaa");
...
...
@@ -219,11 +217,10 @@ For details about the error codes, see [RPC Error Codes](../errorcodes/errorcode
| ------- | ----- |
| 1900010 | read data from message sequence failed |
**Example**
```
class Stub extends rpc.RemoteObject {
```ts
classStubextendsrpc.RemoteObject{
onRemoteRequest(code,data,reply,option){
try{
letinterfaceToken=data.readInterfaceToken();
...
...
@@ -234,8 +231,8 @@ For details about the error codes, see [RPC Error Codes](../errorcodes/errorcode
}
returntrue;
}
}
```
}
```
### getSize
...
...
@@ -253,7 +250,7 @@ Obtains the data size of this **MessageSequence** object.
**Example**
```
```ts
letdata=rpc.MessageSequence.create();
letsize=data.getSize();
console.log("RpcClient: size is "+size);
...
...
@@ -275,7 +272,7 @@ Obtains the capacity of this **MessageSequence** object.
**Example**
```
```ts
letdata=rpc.MessageSequence.create();
letresult=data.getCapacity();
console.log("RpcClient: capacity is "+result);
...
...
@@ -285,7 +282,7 @@ Obtains the capacity of this **MessageSequence** object.
setSize(size: number): void
Sets the size of data contained in this **MessageSequence** object.
Sets the size of the data contained in this **MessageSequence** object.
Adds a callback for receiving death notifications of the remote object. This method is called if the remote object process matching the **RemoteProxy** object is killed.
Registers a callback for receiving death notifications of the remote object. This method is called if the remote object process matching the **RemoteProxy** object is killed.
Adds a callback for receiving death notifications of the remote object. This method is called if the remote object process matching the **RemoteProxy** object is killed.
Registers a callback for receiving death notifications of the remote object. This method is called if the remote object process matching the **RemoteProxy** object is killed.
Obtains the PID of the caller. This method is invoked by the **RemoteObject** object in the **onRemoteRequest** method. If this method is not invoked in the IPC context (**onRemoteRequest**), the PID of the process will be returned.
Obtains the PID of the caller. This API is a static method, which is invoked by the **RemoteObject** object in the **onRemoteRequest** method. If this method is not invoked in the IPC context (**onRemoteRequest**), the PID of the process will be returned.
@@ -7105,7 +7107,7 @@ Obtains the PID of the caller. This method is invoked by the **RemoteObject** ob
**Example**
```
```ts
classStubextendsrpc.RemoteObject{
onRemoteMessageRequest(code,data,reply,option){
letcallerPid=rpc.IPCSkeleton.getCallingPid();
...
...
@@ -7115,12 +7117,11 @@ Obtains the PID of the caller. This method is invoked by the **RemoteObject** ob
}
```
### getCallingUid
static getCallingUid(): number
Obtains the UID of the caller. This method is invoked by the **RemoteObject** object in the **onRemoteRequest** method. If this method is not invoked in the IPC context (**onRemoteRequest**), the UID of the process will be returned.
Obtains the UID of the caller. This API is a static method, which is invoked by the **RemoteObject** object in the **onRemoteRequest** method. If this method is not invoked in the IPC context (**onRemoteRequest**), the UID of the process will be returned.
Flushes all suspended commands from the specified **RemoteProxy** to the corresponding **RemoteObject**. It is recommended that this method be called before any time-sensitive operation is performed.
Flushes all suspended commands from the specified **RemoteProxy** to the corresponding **RemoteObject**. This API is a static method. It is recommended that this method be called before any time-sensitive operation is performed.
@@ -7269,7 +7265,7 @@ Flushes all suspended commands from the specified **RemoteProxy** to the corresp
**Example**
```
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7284,14 +7280,13 @@ Flushes all suspended commands from the specified **RemoteProxy** to the corresp
}
```
### flushCommands<sup>(deprecated)</sup>
>This API is no longer maintained since API version 9. You are advised to use [flushCmdBuffer](#flushcmdbuffer9).
static flushCommands(object: IRemoteObject): number
Flushes all suspended commands from the specified **RemoteProxy** to the corresponding **RemoteObject**. It is recommended that this method be called before any time-sensitive operation is performed.
Flushes all suspended commands from the specified **RemoteProxy** to the corresponding **RemoteObject**. This API is a static method. It is recommended that this method be called before any time-sensitive operation is performed.
@@ -7309,7 +7304,7 @@ Flushes all suspended commands from the specified **RemoteProxy** to the corresp
**Example**
```
```ts
classMyDeathRecipient{
onRemoteDied(){
console.log("server died");
...
...
@@ -7338,7 +7333,7 @@ Flushes all suspended commands from the specified **RemoteProxy** to the corresp
static resetCallingIdentity(): string
Changes the UID and PID of the remote user to the UID and PID of the local user. This method is used in scenarios such as identity authentication.
Changes the UID and PID of the remote user to the UID and PID of the local user. This API is a static method. You can use it in scenarios such as identity authentication.
Changes the UID and PID of the remote user to the UID and PID of the local user. This method is used in scenarios such as identity authentication.
Changes the UID and PID of the remote user to the UID and PID of the local user. This API is a static method. You can use it in scenarios such as identity authentication.
Restores the UID and PID of the remote user. It is usually called when the UID and PID of the remote user are required. The UID and PID of the remote user are returned by **resetCallingIdentity**.
Restores the UID and PID of the remote user. This API is a static method. It is usually called when the UID and PID of the remote user are required. The UID and PID of the remote user are returned by **resetCallingIdentity**.
| boolean | Returns a Boolean value if the request is processed synchronously in **onRemoteMessageRequest**. If the operation is successful, **true** is returned. Otherwise, **false** is returned.|
| boolean | Returns a Boolean value if the request is processed synchronously in **onRemoteMessageRequest**. The value **true** means the operation is successful; the value **false** means the opposite.|
| Promise\<boolean> | Returns a promise object if the request is processed asynchronously in **onRemoteMessageRequest**. |
**Example**: Overload **onRemoteMessageRequest** to process requests synchronously.
```ets
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7872,7 +7861,7 @@ Provides a response to **sendMessageRequest()**. The server processes the reques
**Example**: Overload **onRemoteMessageRequest** to process requests asynchronously.
```ets
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7895,7 +7884,7 @@ Provides a response to **sendMessageRequest()**. The server processes the reques
**Example**: Overload **onRemoteMessageRequest** and **onRemoteRequest** to process requests synchronously.
```ets
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7926,7 +7915,7 @@ Provides a response to **sendMessageRequest()**. The server processes the reques
**Example**: Overload **onRemoteMessageRequest** and **onRemoteRequest** to process requests asynchronously.
```ets
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7957,7 +7946,6 @@ Provides a response to **sendMessageRequest()**. The server processes the reques
}
```
### getCallingUid
getCallingUid(): number
...
...
@@ -7973,7 +7961,7 @@ Obtains the UID of the remote process.
**Example**
```
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -7999,7 +7987,7 @@ Obtains the PID of the remote process.
**Example**
```
```ts
classTestRemoteObjectextendsrpc.RemoteObject{
constructor(descriptor){
super(descriptor);
...
...
@@ -8013,7 +8001,7 @@ Obtains the PID of the remote process.
Provides methods related to anonymous shared memory objects, including creating, closing, mapping, and unmapping an **Ashmem** object, reading data from and writing data to an **Ashmem** object, obtaining the **Ashmem** size, and setting **Ashmem** protection.
The table below describes the protection types of the mapped memory.
console.log("RpcTest: get ashemm by createAshmem : "+ashmem+" size is : "+size);
```
### create<sup>9+</sup>
static create(ashmem: Ashmem): Ashmem
Creates an **Ashmem** object by copying the file descriptor (FD) of an existing Ashmem object. The two **Ashmem** objects point to the same shared memory region.
Creates an **Ashmem** object by copying the file descriptor of an existing **Ashmem** object. The two **Ashmem** objects point to the same shared memory region.
Creates an **Ashmem** object by copying the file descriptor (FD) of an existing Ashmem object. The two **Ashmem** objects point to the same shared memory region.
Creates an **Ashmem** object by copying the file descriptor of an existing **Ashmem** object. The two **Ashmem** objects point to the same shared memory region.
The **tagSession** module provides common APIs for establishing connections and transferring data.
...
...
@@ -26,9 +26,12 @@ getTagInfo(): tag.TagInfo
Obtains the **tagInfo** object provided by the NFC service when the tag is dispatched.
> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tag.getTagInfo](js-apis-nfcTag.md#taggettaginfo9).
For details about the error codes, see [NFC Error Codes](../errorcodes/errorcode-nfc.md).
| ID| Error Message|
| ------- | -------|
| 3100201 | Tag running state is abnormal in service. |
**Example**
```js
importtagfrom'@ohos.nfc.tag';
// tagInfo is an object provided by the NFC service when a tag is dispatched.
// getXXX can be getIsoDep, getNdef, getMifareClassic, or any other getter for NFC tags.
try{
tag.getIsoDep(tagInfo).connect();
console.log("tag connect success");
}catch(busiError){
console.log("tag connect busiError: "+busiError);
}
```
### tagSession.reset()
reset(): void
Resets the connection to this tag.
> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tagSession.resetConnection](#tagsessionresetconnection9).
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tagSession.isConnected](#tagsessionisconnected9).
Obtains the maximum length of the data that can be sent to this tag.
> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tagSession.getMaxTransmitSize](#tagsessiongetmaxtransmitsize9).
Obtains the timeout period for sending data to this tag, in milliseconds.
> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tagSession.getTimeout](#tagsessiongettimeout9).
Sets the timeout period for sending data to this tag, in milliseconds.
> **NOTE**
> This API is supported since API version 7 and deprecated since API version 9. You are advised to use [tagSession.setTimeout](#tagsessionsettimeout9).
Sends data to this tag. This API uses an asynchronous callback to return the result.
> **NOTE**
> This parameter is supported since API version 7 and discarded since API version 9. You are advised to use [tagSession.transmit](#tagsessiontransmit9-1).
| Promise<number[]> | Promise used to return the response from the tag. The response consists of hexadecimal numbers ranging from **0x00** to **0xFF**.|
**Error codes**
For details about the error codes, see [NFC Error Codes](../errorcodes/errorcode-nfc.md).
| ID| Error Message|
| ------- | -------|
| 3100201 | Tag running state is abnormal in service. |
**Example**
```js
importtagfrom'@ohos.nfc.tag';
// tagInfo is an object provided by the NFC service when a tag is dispatched.
// getXXX can be getIsoDep, getNdef, getMifareClassic, or any other getter for NFC tags.
// Connect to the tag if it is not connected.
try{
if(!tag.getIsoDep(tagInfo).isConnected()){
tag.getIsoDep(tagInfo).connect();
}
}catch(busiError){
console.log("tag connect busiError: "+busiError);
return;
}
letcmdData=[0x01,0x02,0x03,0x04];// Change it as required.
| data | number[] | Yes| Data to transmit. The data consists of hexadecimal numbers ranging from **0x00** to **0xFF**. |
| callback | AsyncCallback<number[]> | Yes| Callback invoked to return the response from the tag. The response consists of hexadecimal numbers ranging from **0x00** to **0xFF**.|
**Error codes**
For details about the error codes, see [NFC Error Codes](../errorcodes/errorcode-nfc.md).
| ID| Error Message|
| ------- | -------|
| 3100201 | Tag running state is abnormal in service. |
**Example**
```js
importtagfrom'@ohos.nfc.tag';
// tagInfo is an object provided by the NFC service when a tag is dispatched.
// getXXX can be getIsoDep, getNdef, getMifareClassic, or any other getter for NFC tags.
// Connect to the tag if it is not connected.
try{
if(!tag.getIsoDep(tagInfo).isConnected()){
tag.getIsoDep(tagInfo).connect();
}
}catch(busiError){
console.log("tag connect busiError: "+busiError);
return;
}
letcmdData=[0x01,0x02,0x03,0x04];// Change it as required.
The **WLAN** module provides basic wireless local area network (WLAN) functions, peer-to-peer (P2P) functions, and WLAN message notification services. It allows applications to communicate with other devices over WLAN.
> **NOTE**
...
...
@@ -1038,7 +1037,7 @@ Removes the specified network configuration.
This **wifiext** module provides WLAN extension interfaces for non-universal products.
> **NOTE**
...
...
@@ -26,9 +25,9 @@ Enables the WLAN hotspot.
**Return value**
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
## wifiext.disableHotspot
...
...
@@ -43,9 +42,9 @@ Disables the WLAN hotspot.
**Return value**
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
## wifiext.getSupportedPowerModel
...
...
@@ -60,9 +59,9 @@ Obtains the supported power models. This API uses a promise to return the result
**Return value**
| Type| Description|
| -------- | -------- |
| Promise<Array<[PowerModel](#powermodel)>> | Promise used to return the power models obtained.|
| Type| Description|
| -------- | -------- |
| Promise<Array<[PowerModel](#powermodel)>> | Promise used to return the power models obtained.|
## PowerModel
...
...
@@ -90,9 +89,9 @@ Obtains the supported power models. This API uses an asynchronous callback to re
**Parameters**
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<Array<[PowerModel](#powermodel)>> | Yes| Callback invoked to return the result. If the operation is successful, **err** is 0 and **data** is the power models obtained. If **err** is not **0**, an error has occurred.|
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<Array<[PowerModel](#powermodel)>> | Yes| Callback invoked to return the result. If the operation is successful, **err** is 0 and **data** is the power models obtained. If **err** is not **0**, an error has occurred.|
## wifiext.getPowerModel
...
...
@@ -107,9 +106,9 @@ Obtains the power model. This API uses a promise to return the result.
**Return value**
| Type| Description|
| -------- | -------- |
| Promise<[PowerModel](#powermodel)> | Promise used to return the power model obtained.|
| Type| Description|
| -------- | -------- |
| Promise<[PowerModel](#powermodel)> | Promise used to return the power model obtained.|
## wifiext.getPowerModel
...
...
@@ -124,16 +123,16 @@ Obtains the power model. This API uses an asynchronous callback to return the re
**Parameters**
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<[PowerModel](#powermodel)> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **0** and **data** is the power model obtained. If **err** is not **0**, an error has occurred.|
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<[PowerModel](#powermodel)> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **0** and **data** is the power model obtained. If **err** is not **0**, an error has occurred.|
This **wifiext** module provides WLAN extension interfaces for non-universal products.
...
...
@@ -26,9 +26,9 @@ Enables the WLAN hotspot.
**Return value**
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
## wifiext.disableHotspot
...
...
@@ -43,9 +43,9 @@ Disables the WLAN hotspot.
**Return value**
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
| **Type**| **Description**|
| -------- | -------- |
| boolean | Returns **true** if the operation is successful; returns **false** otherwise.|
## wifiext.getSupportedPowerModel
...
...
@@ -60,9 +60,9 @@ Obtains the supported power models. This API uses a promise to return the result
**Return value**
| Type| Description|
| -------- | -------- |
| Promise<Array<[PowerModel](#powermodel)>> | Promise used to return the power models obtained.|
| Type| Description|
| -------- | -------- |
| Promise<Array<[PowerModel](#powermodel)>> | Promise used to return the power models obtained.|
## PowerModel
...
...
@@ -90,9 +90,9 @@ Obtains the supported power models. This API uses an asynchronous callback to re
**Parameters**
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<Array<[PowerModel](#powermodel)>> | Yes| Callback invoked to return the result. If the operation is successful, **err** is 0 and **data** is the power models obtained. If **err** is not **0**, an error has occurred.|
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<Array<[PowerModel](#powermodel)>> | Yes| Callback invoked to return the result. If the operation is successful, **err** is 0 and **data** is the power models obtained. If **err** is not **0**, an error has occurred.|
## wifiext.getPowerModel
...
...
@@ -107,9 +107,9 @@ Obtains the power model. This API uses a promise to return the result.
**Return value**
| Type| Description|
| -------- | -------- |
| Promise<[PowerModel](#powermodel)> | Promise used to return the power model obtained.|
| Type| Description|
| -------- | -------- |
| Promise<[PowerModel](#powermodel)> | Promise used to return the power model obtained.|
## wifiext.getPowerModel
...
...
@@ -124,16 +124,16 @@ Obtains the power model. This API uses an asynchronous callback to return the re
**Parameters**
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<[PowerModel](#powermodel)> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **0** and **data** is the power model obtained. If **err** is not **0**, an error has occurred.|
| Name| Type| Mandatory| Description|
| -------- | -------- | -------- | -------- |
| callback | AsyncCallback<[PowerModel](#powermodel)> | Yes| Callback invoked to return the result. If the operation is successful, **err** is **0** and **data** is the power model obtained. If **err** is not **0**, an error has occurred.|
