!21790 挑单 4.0 Beta2

Merge pull request !21790 from Annie_wang/cherry-pick-1690939716

en/application-dev/reference/apis/Readme-EN.md

@@ -267,6 +267,7 @@
   - [@ohos.file.fileuri (File URI)](js-apis-file-fileuri.md)
   - [@ohos.file.fs (File Management)](js-apis-file-fs.md)
   - [@ohos.file.hash (File Hash Processing)](js-apis-file-hash.md)
+  - [@ohos.file.photoAccessHelper (Album Management)](js-apis-photoAccessHelper.md)
   - [@ohos.file.picker (File Picker)](js-apis-file-picker.md)
   - [@ohos.file.securityLabel (Data Label)](js-apis-file-securityLabel.md)
   - [@ohos.file.statvfs (File System Space Statistics)](js-apis-file-statvfs.md)
@@ -296,8 +297,18 @@
   - [@ohos.request (Upload and Download)](js-apis-request.md)
 
 - Connectivity
+  - [@ohos.bluetooth.a2dp (Bluetooth a2dp Module)(Recommended)](js-apis-bluetooth-a2dp.md)
+  - [@ohos.bluetooth.access (Bluetooth access Module)(Recommended)](js-apis-bluetooth-access.md)
+  - [@ohos.bluetooth.baseProfile (Bluetooth baseProfile Module)(Recommended)](js-apis-bluetooth-baseProfile.md)
+  - [@ohos.bluetooth.ble (Bluetooth ble Module)(Recommended)](js-apis-bluetooth-ble.md)
+  - [@ohos.bluetooth.connection (Bluetooth connection Module)(Recommended)](js-apis-bluetooth-connection.md)
+  - [@ohos.bluetooth.constant (Bluetooth constant Module)(Recommended)](js-apis-bluetooth-constant.md)
+  - [@ohos.bluetooth.hfp (Bluetooth hfp Module)(Recommended)](js-apis-bluetooth-hfp.md)
+  - [@ohos.bluetooth.hid (Bluetooth hid Module)(Recommended)(js-apis-bluetooth-hid.md)
+  - [@ohos.bluetooth.pan (Bluetooth pan Module)(Recommended)](js-apis-bluetooth-pan.md)
+  - [@ohos.bluetooth.socket (Bluetooth socket Module)(Recommended)](js-apis-bluetooth-socket.md)
   - [@ohos.bluetooth (Bluetooth) (To Be Deprecated Soon)](js-apis-bluetooth.md)
-  - [@ohos.bluetoothManager (Bluetooth) (Recommended)](js-apis-bluetoothManager.md)
+  - [@ohos.bluetoothManager (Bluetooth) (To Be Deprecated Soon)](js-apis-bluetoothManager.md)
   - [@ohos.connectedTag (Active Tags)](js-apis-connectedTag.md)
   - [@ohos.nfc.cardEmulation (Standard NFC Card Emulation)](js-apis-cardEmulation.md)
   - [@ohos.nfc.controller (Standard NFC)](js-apis-nfcController.md)
@@ -391,6 +402,7 @@
   - [@ohos.configPolicy (Configuration Policy)](js-apis-configPolicy.md)
 
 - Enterprise Device Management
+  - [Enterprise Device Management Overview (for System Applications Only)](enterpriseDeviceManagement-overview.md)
   - [@ohos.enterprise.accountManager(Account Management)](js-apis-enterprise-accountManager.md)
   - [@ohos.enterprise.adminManager (Enterprise Device Management)](js-apis-enterprise-adminManager.md)
   - [@ohos.enterprise.applicationManager (Application Management)](js-apis-enterprise-applicationManager.md)

en/application-dev/reference/apis/js-apis-bluetooth-a2dp.md

+# @ohos.bluetooth.a2dp (Bluetooth A2DP Module)
+
+The **a2dp** module provides APIs for using the Bluetooth Advanced Audio Distribution Profile (A2DP), which defines how to stream high quality audio from one device to another over a Bluetooth connection.
+
+> **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 a2dp from '@ohos.bluetooth.a2dp';
+```
+
+
+## a2dp.createA2dpSrcProfile<a name="createA2dpSrcProfile"></a>
+
+createA2dpSrcProfile(): A2dpSourceProfile
+
+Creates an **A2dpSrcProfile** instance.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Return value**
+
+| Type                           | Description        |
+| ----------------------------- | ---------- |
+| A2dpSourceProfile | **A2dpSrcProfile** instance created.|
+
+**Example**
+
+```js
+try {
+    let a2dpProfile = a2dp.createA2dpSrcProfile();
+    console.info('a2dp success');
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## A2dpSourceProfile
+
+Provides APIs for using the A2DP. Before using any API of **A2dpSourceProfile**, you need to create an instance of this class by using **createA2dpSrcProfile()**.
+
+
+### connect<a name="a2dp-connect"></a>
+
+connect(deviceId: string): void
+
+Connects to an A2DP device.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name   | Type    | Mandatory  | Description     |
+| ------ | ------ | ---- | ------- |
+| deviceId | string | Yes   | Address of the device to connect. |
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.               |
+|2900003 | Bluetooth switch is off.       |
+|2900004 | Profile is not supported.      |
+|2900099 | Operation failed.              |
+
+**Example**
+
+```js
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    a2dpSrc.connect('XX:XX:XX:XX:XX:XX');
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+### disconnect<a name="a2dp-disconnect"></a>
+
+disconnect(deviceId: string): void
+
+Disconnects from an A2DP device.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name   | Type    | Mandatory  | Description     |
+| ------ | ------ | ---- | ------- |
+| deviceId | string | Yes   | Address of the device to disconnect. |
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    a2dpSrc.disconnect('XX:XX:XX:XX:XX:XX');
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+### getPlayingState
+
+getPlayingState(deviceId: string): PlayingState
+
+Obtains the playing state of a device.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name   | Type    | Mandatory  | Description     |
+| ------ | ------ | ---- | ------- |
+| device | string | Yes   | Address of the remote device.|
+
+**Return value**
+
+| Type                           | Description        |
+| ----------------------------- | ---------- |
+| [PlayingState](#PlayingState) | Playing state of the remote device obtained.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let state = a2dpSrc.getPlayingState('XX:XX:XX:XX:XX:XX');
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+## PlayingState<a name="PlayingState"></a>
+
+Enumerates the A2DP playing states.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name               | Value   | Description     |
+| ----------------- | ------ | ------- |
+| STATE_NOT_PLAYING | 0x0000 | Not playing. |
+| STATE_PLAYING     | 0x0001 | Playing.|

en/application-dev/reference/apis/js-apis-bluetooth-access.md

+# @ohos.bluetooth.access (Bluetooth Access Module)
+
+The **access** module provides APIs for enabling and disabling Bluetooth and obtaining the Bluetooth status.
+
+> **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 access from '@ohos.bluetooth.access';
+```
+
+
+## access.enableBluetooth<a name="enableBluetooth"></a>
+
+enableBluetooth(): void
+
+Enables Bluetooth.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message           |
+| -------- | ------------------ |
+|2900001   | Service stopped.   |
+|2900099   | Operation failed.  |
+
+**Example**
+
+```js
+try {
+    access.enableBluetooth();
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## access.disableBluetooth<a name="disableBluetooth"></a>
+
+disableBluetooth(): void
+
+Disables Bluetooth.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+|ID  | Error Message          |
+| -------- | ------------------ |
+|2900001   | Service stopped.   |
+|2900099   | Operation failed.  |
+
+**Example**
+
+```js
+try {
+    access.disableBluetooth();
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## access.getState<a name="getState"></a>
+
+getState(): BluetoothState
+
+Obtains the Bluetooth state.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Return value**
+
+| Type                             | Description             |
+| --------------------------------- | ---------------- |
+| [BluetoothState](#bluetoothstate) | Bluetooth state obtained.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+|ID  | Error Message          |
+| -------- | ------------------ |
+|2900001   | Service stopped.   |
+|2900099   | Operation failed.  |
+
+**Example**
+
+```js
+try {
+    let state = access.getState();
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## access.on('stateChange')<a name="stateChange"></a>
+
+on(type: "stateChange", callback: Callback&lt;BluetoothState&gt;): void
+
+Subscribes to Bluetooth state changes.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name  | Type                                              | Mandatory | Description                                                      |
+| -------- | ------------------------------------------------- | ----- | ---------------------------------------------------------- |
+| type     | string                                            | Yes   | Event type. The value is **stateChange**, which indicates a Bluetooth state change event.              |
+| callback | Callback&lt;[BluetoothState](#bluetoothstate)&gt; | Yes   | Callback invoked to return the Bluetooth state. You need to implement this callback.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+|ID  | Error Message          |
+| -------- | ------------------ |
+|2900099   | Operation failed.  |
+
+**Example**
+
+```js
+function onReceiveEvent(data) {
+    console.info('bluetooth state = '+ JSON.stringify(data));
+}
+try {
+    access.on('stateChange', onReceiveEvent);
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## access.off('stateChange')<a name="stateChange"></a>
+
+off(type: "stateChange", callback?: Callback&lt;BluetoothState&gt;): void
+
+Unsubscribes from Bluetooth state changes.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type                                      | Mandatory  | Description                                      |
+| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
+| type     | string                                   | Yes   | Event type. The value is **stateChange**, which indicates a Bluetooth state change event.          |
+| callback | Callback&lt;[BluetoothState](#bluetoothstate)&gt; | No   | Callback for the Bluetooth state change event. If this parameter is not set, this API unsubscribes from all callbacks corresponding to **type**.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+function onReceiveEvent(data) {
+    console.info('bluetooth state = '+ JSON.stringify(data));
+}
+try {
+    access.on('stateChange', onReceiveEvent);
+    access.off('stateChange', onReceiveEvent);
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## BluetoothState<a name="BluetoothState"></a>
+
+Enumerates the Bluetooth states.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                   | Value | Description                |
+| --------------------- | ---- | ------------------ |
+| STATE_OFF             | 0    | Bluetooth is turned off.          |
+| STATE_TURNING_ON      | 1    | Bluetooth is being turned on.         |
+| STATE_ON              | 2    | Bluetooth is turned on.          |
+| STATE_TURNING_OFF     | 3    | Bluetooth is being turned off.         |
+| STATE_BLE_TURNING_ON  | 4    | The LE-only mode is being turned on for Bluetooth.|
+| STATE_BLE_ON          | 5    | Bluetooth is in LE-only mode. |
+| STATE_BLE_TURNING_OFF | 6    | The LE-only mode is being turned off for Bluetooth.|

en/application-dev/reference/apis/js-apis-bluetooth-baseProfile.md

+# @ohos.bluetooth.baseProfile (Bluetooth baseProfile Module)
+
+The **baseProfile** module provides APIs for using basic Bluetooth profiles.
+
+> **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 baseProfile from '@ohos.bluetooth.baseProfile';
+```
+
+
+## ConnectionStrategy<a name="ConnectionStrategy"></a>
+
+Enumerates the profile connection strategies.
+
+**System API**: This is a system API.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                            | Value     | Description           |
+| -------------------------------- | ------ | --------------- |
+| CONNECTION_STRATEGY_UNSUPPORTED   | 0 | Default connection strategy to use when the device is not paired.<br>This is a system API.|
+| CONNECTION_STRATEGY_ALLOWED  | 1 |  Connection strategy to use when the device is allowed to accept or initiate pairing.<br>This is a system API.|
+| CONNECTION_STRATEGY_FORBIDDEN  | 2 | Connection strategy to use when the device is not allowed to accept or initiate pairing.<br>This is a system API. |
+
+
+## StateChangeParam<a name="StateChangeParam"></a>
+
+Represents the profile state change parameters.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name    | Type                          | Readable| Writable| Description                           |
+| -------- | ----------------------------- | ---- | ---- | ------------------------------- |
+| deviceId | string                        | Yes  | No  | Address of the Bluetooth device.  |
+| state    | ProfileConnectionState        | Yes  | No  | Profile connection state of the device.|
+
+
+## baseProfile.setConnectionStrategy<a name="setConnectionStrategy"></a>
+
+setConnectionStrategy(deviceId: string, strategy: ConnectionStrategy, callback: AsyncCallback&lt;void&gt;): void
+
+Sets the profile connection strategy for this device. This API uses an asynchronous callback to return the result.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type    | Mandatory  | Description                                 |
+| -------- | ------ | ---- | ----------------------------------- |
+| deviceId | string | Yes   | Address of the device to pair, for example, XX:XX:XX:XX:XX:XX. |
+| strategy | [ConnectionStrategy](#connectionstrategy)   | Yes   |Profile connection strategy to set.|
+| callback | AsyncCallback&lt;void&gt;  | Yes   | Callback invoked to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let setRet = a2dpSrc.setConnectionStrategy('XX:XX:XX:XX:XX:XX', 0, (err, data) => {
+        console.info('setConnectionStrategy, err: ' + JSON.stringify(err) + ', data: ' + JSON.stringify(data));
+    });
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+## baseProfile.setConnectionStrategy<a name="setConnectionStrategy"></a>
+
+setConnectionStrategy(deviceId: string, strategy: ConnectionStrategy): Promise&lt;void&gt;
+
+Sets the profile connection strategy for this device. This API uses a promise to return the result.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type    | Mandatory  | Description                                 |
+| -------- | ------ | ---- | ----------------------------------- |
+| deviceId | string | Yes   | Address of the device to pair, for example, XX:XX:XX:XX:XX:XX. |
+| strategy | [ConnectionStrategy](#connectionstrategy)   | Yes   |Profile connection strategy to set.|
+
+**Return value**
+
+| Type                 | Description           |
+| ------------------- | ------------- |
+| Promise&lt;void&gt; | Promise used to return the result.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let setRet = a2dpSrc.setConnectionStrategy('XX:XX:XX:XX:XX:XX', 1).then((data) => {
+        console.info('setConnectionStrategy');
+    }, (err) => {
+        console.error('setConnectionStrategy errCode: ' + err.code + ', errMessage: ' + err.message);
+    });
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+## baseProfile.getConnectionStrategy<a name="getConnectionStrategy"></a>
+
+getConnectionStrategy(deviceId: string, callback: AsyncCallback&lt;ConnectionStrategy&gt;): void
+
+Obtains the profile connection strategy. This API uses an asynchronous callback to return the result.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type    | Mandatory  | Description                                 |
+| -------- | ------ | ---- | ----------------------------------- |
+| deviceId | string | Yes   | Address of the device to pair, for example, XX:XX:XX:XX:XX:XX. |
+| callback | AsyncCallback&lt;[ConnectionStrategy](#connectionstrategy)&gt; | Yes   | Callback invoked to return the result. If the operation is successful, **err** is **undefined**. Otherwise, **err** is an error object.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let setRet = a2dpSrc.getConnectionStrategy('XX:XX:XX:XX:XX:XX', 0, (err, data) => {
+        console.info('getConnectionStrategy, err: ' + JSON.stringify(err) + ', data: ' + JSON.stringify(data));
+    });
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+## baseProfile.getConnectionStrategy<a name="getConnectionStrategy"></a>
+
+getConnectionStrategy(deviceId: string): Promise&lt;ConnectionStrategy&gt;
+
+Obtains the profile connection strategy. This API uses a promise to return the result.
+
+**System API**: This is a system API.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH and ohos.permission.MANAGE_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type    | Mandatory  | Description                                 |
+| -------- | ------ | ---- | ----------------------------------- |
+| deviceId | string | Yes   | Address of the device to pair, for example, XX:XX:XX:XX:XX:XX. |
+
+**Return value**
+
+| Type                 | Description           |
+| ------------------- | ------------- |
+|   Promise&lt;[ConnectionStrategy](#connectionstrategy)&gt; | Promise used to return the profile connection strategy obtained.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let setRet = a2dpSrc.getConnectionStrategy('XX:XX:XX:XX:XX:XX', 1).then((data) => {
+        console.info('getConnectionStrategy');
+    }, (error) => {
+        console.error('getConnectionStrategy errCode: ' + err.code + ', errMessage: ' + err.message);
+    });
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## baseProfile.getConnectedDevices<a name="getConnectedDevices"></a>
+
+getConnectedDevices(): Array&lt;string&gt;
+
+Obtains the connected devices.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Return value**
+
+| Type                 | Description                 |
+| ------------------- | ------------------- |
+| Array&lt;string&gt; | Addresses of the connected devices.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let retArray = a2dpSrc.getConnectedDevices();
+} catch (err) {
+    console.error("errCode:" + err.code + ",errMessage:" + err.message);
+}
+```
+
+
+## baseProfile.getConnectionState<a name="getConnectionState"></a>
+
+getConnectionState(deviceId: string): ProfileConnectionState
+
+Obtains the profile connection state of a device.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name   | Type    | Mandatory  | Description     |
+| ------ | ------ | ---- | ------- |
+| deviceId | string | Yes   | Address of the remote device.|
+
+**Return value**
+
+| Type                                             | Description                   |
+| ------------------------------------------------- | ----------------------- |
+| [ProfileConnectionState](js-apis-bluetooth-constant.md#profileconnectionstate) | Profile connection state obtained.|
+
+**Error codes**
+
+For details about the error codes, see [Bluetooth Error Codes](../errorcodes/errorcode-bluetoothManager.md).
+
+| ID| Error Message|
+| -------- | ---------------------------- |
+|2900001 | Service stopped.                         |
+|2900003 | Bluetooth switch is off.                 |
+|2900004 | Profile is not supported.                |
+|2900099 | Operation failed.                        |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    let ret = a2dpSrc.getConnectionState('XX:XX:XX:XX:XX:XX');
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## baseProfile.on('connectionStateChange')
+
+on(type: 'connectionStateChange', callback: Callback&lt;StateChangeParam&gt;): void
+
+Subscribes to profile connection state changes.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type                                      | Mandatory  | Description                                      |
+| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
+| type     | string                                   | Yes   | Event type. The value is **connectionStateChange**, which indicates a profile connection state change event.|
+| callback | Callback&lt;[StateChangeParam](#statechangeparam)&gt; | Yes   | Callback invoked to return the profile connection state change.                              |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    function onReceiveEvent(data) {
+        console.info('a2dp state = '+ JSON.stringify(data));
+    }
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    a2dpSrc.on('connectionStateChange', onReceiveEvent);
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```
+
+
+## baseProfile.off('connectionStateChange')
+
+off(type: 'connectionStateChange', callback?: Callback&lt;[StateChangeParam](#StateChangeParam)&gt;): void
+
+Unsubscribes from profile connection state changes.
+
+**Required permissions**: ohos.permission.ACCESS_BLUETOOTH
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+**Parameters**
+
+| Name     | Type                                      | Mandatory  | Description                                      |
+| -------- | ---------------------------------------- | ---- | ---------------------------------------- |
+| type     | string                                   | Yes   | Event type. The value is **connectionStateChange**, which indicates a profile connection state change event.|
+| callback | Callback&lt;[StateChangeParam](#StateChangeParam)&gt; | No   | Callback for the profile connection state change.                              |
+
+**Example**
+
+```js
+import a2dp from '@ohos.bluetooth.a2dp';
+try {
+    function onReceiveEvent(data) {
+        console.info('a2dp state = '+ JSON.stringify(data));
+    }
+    let a2dpSrc = a2dp.createA2dpSrcProfile();
+    a2dpSrc.on('connectionStateChange', onReceiveEvent);
+    a2dpSrc.off('connectionStateChange', onReceiveEvent);
+} catch (err) {
+    console.error('errCode: ' + err.code + ', errMessage: ' + err.message);
+}
+```

en/application-dev/reference/apis/js-apis-bluetooth-constant.md

+# @ohos.bluetooth.constant (Bluetooth constant Module)
+
+The **constant** module provides definitions of the constants used in Bluetooth.
+
+> **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 constant from '@ohos.bluetooth.constant';
+```
+
+## ProfileId<a name="ProfileId"></a>
+
+Enumerates profiles.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                              | Value   | Description             |
+| -------------------------------- | ------ | --------------- |
+| PROFILE_A2DP_SOURCE              | 1 | Advanced Audio Distribution Profile (A2DP).|
+| PROFILE_HANDSFREE_AUDIO_GATEWAY | 4 | Hands-Free Profile (HFP). |
+| PROFILE_HID_HOST | 6 | Human Interface Device (HID) profile. |
+| PROFILE_PAN_NETWORK | 7 | Bluetooth personal area network (PAN) profile. |
+
+
+## ProfileUuids<a name="ProfileUuids"></a>
+
+Enumerates profile UUIDs.
+
+**System API**: This is a system API.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                                  | Value   | Description             |
+| ------------------------------------| ------ | --------------- |
+| PROFILE_UUID_HFP_AG      | '0000111F-0000-1000-8000-00805F9B34FB' | UUID of the HFPAG Profile.<br>This is a system API.|
+| PROFILE_UUID_HFP_HF      | '0000111E-0000-1000-8000-00805F9B34FB' | UUID of the HFPHF Profile.<br>This is a system API. |
+| PROFILE_UUID_HSP_AG      | '00001112-0000-1000-8000-00805F9B34FB' | UUID of the HSPAG Profile.<br>This is a system API. |
+| PROFILE_UUID_HSP_HS      | '00001108-0000-1000-8000-00805F9B34FB' | UUID of the HSPHS Profile.<br>This is a system API. |
+| PROFILE_UUID_A2DP_SRC    | '0000110A-0000-1000-8000-00805F9B34FB' | Indicates the UID of the A2DPSRC Profile.<br>This is a system API. |
+| PROFILE_UUID_A2DP_SINK   | '0000110B-0000-1000-8000-00805F9B34FB' | UUID of the A2DPSINK Profile.<br>This is a system API. |
+| PROFILE_UUID_AVRCP_CT    | '0000110E-0000-1000-8000-00805F9B34FB' | UUID of the AVRCPCT Profile.<br>This is a system API. |
+| PROFILE_UUID_AVRCP_TG    | '0000110C-0000-1000-8000-00805F9B34FB' | UUID of the AVRCPTG Profile.<br>This is a system API. |
+| PROFILE_UUID_HID         | '00001124-0000-1000-8000-00805F9B34FB' | UUID of the HID Profile.<br>This is a system API. |
+| PROFILE_UUID_HOGP        | '00001812-0000-1000-8000-00805F9B34FB' | UUID of the HOGP Profile.<br>This is a system API. |
+
+
+## ProfileConnectionState
+
+Enumerates the profile connection states.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                 | Value | Description            |
+| ------------------- | ---- | -------------- |
+| STATE_DISCONNECTED  | 0    | Disconnected. |
+| STATE_CONNECTING    | 1    | Connecting.|
+| STATE_CONNECTED     | 2    | Connected. |
+| STATE_DISCONNECTING | 3    | Disconnecting.|
+
+
+## MajorClass<a name="MajorClass"></a>
+
+Enumerates the major classes of Bluetooth devices.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                 | Value   | Description        |
+| ------------------- | ------ | ---------- |
+| MAJOR_MISC          | 0x0000 | Miscellaneous device.   |
+| MAJOR_COMPUTER      | 0x0100 | Computer.  |
+| MAJOR_PHONE         | 0x0200 | Mobile phone.   |
+| MAJOR_NETWORKING    | 0x0300 | Network device.   |
+| MAJOR_AUDIO_VIDEO   | 0x0400 | Audio or video device.|
+| MAJOR_PERIPHERAL    | 0x0500 | Peripheral device.   |
+| MAJOR_IMAGING       | 0x0600 | Imaging device.   |
+| MAJOR_WEARABLE      | 0x0700 | Wearable device.  |
+| MAJOR_TOY           | 0x0800 | Toy.   |
+| MAJOR_HEALTH        | 0x0900 | Health device.   |
+| MAJOR_UNCATEGORIZED | 0x1F00 | Unclassified device.  |
+
+
+## MajorMinorClass<a name="MajorMinorClass"></a>
+
+Enumerates the major and minor classes of Bluetooth devices.
+
+**System capability**: SystemCapability.Communication.Bluetooth.Core
+
+| Name                                      | Value   | Description             |
+| ---------------------------------------- | ------ | --------------- |
+| COMPUTER_UNCATEGORIZED                   | 0x0100 | Unclassified computer.    |
+| COMPUTER_DESKTOP                         | 0x0104 | Desktop computer.     |
+| COMPUTER_SERVER                          | 0x0108 | Server.       |
+| COMPUTER_LAPTOP                          | 0x010C | Laptop.    |
+| COMPUTER_HANDHELD_PC_PDA                 | 0x0110 | Hand-held computer.    |
+| COMPUTER_PALM_SIZE_PC_PDA                | 0x0114 | Palmtop computer.      |
+| COMPUTER_WEARABLE                        | 0x0118 | Wearable computer.    |
+| COMPUTER_TABLET                          | 0x011C | Tablet.      |
+| PHONE_UNCATEGORIZED                      | 0x0200 | Unclassified mobile phone.     |
+| PHONE_CELLULAR                           | 0x0204 | Portable phone.     |
+| PHONE_CORDLESS                           | 0x0208 | Cordless phone.      |
+| PHONE_SMART                              | 0x020C | Smartphone.      |
+| PHONE_MODEM_OR_GATEWAY                   | 0x0210 | Modem or gateway phone.|
+| PHONE_ISDN                               | 0x0214 | ISDN phone.    |
+| NETWORK_FULLY_AVAILABLE                  | 0x0300 | Device with network fully available.    |
+| NETWORK_1_TO_17_UTILIZED                 | 0x0320 | Device used on network 1 to 17.  |
+| NETWORK_17_TO_33_UTILIZED                | 0x0340 | Device used on network 17 to 33. |
+| NETWORK_33_TO_50_UTILIZED                | 0x0360 | Device used on network 33 to 50. |
+| NETWORK_60_TO_67_UTILIZED                | 0x0380 | Device used on network 60 to 67. |
+| NETWORK_67_TO_83_UTILIZED                | 0x03A0 | Device used on network 67 to 83. |
+| NETWORK_83_TO_99_UTILIZED                | 0x03C0 | Device used on network 83 to 99. |
+| NETWORK_NO_SERVICE                       | 0x03E0 | Device without network service     |
+| AUDIO_VIDEO_UNCATEGORIZED                | 0x0400 | Unclassified audio or video device.   |
+| AUDIO_VIDEO_WEARABLE_HEADSET             | 0x0404 | Wearable audio or video headset.  |
+| AUDIO_VIDEO_HANDSFREE                    | 0x0408 | Hands-free audio or video device.    |
+| AUDIO_VIDEO_MICROPHONE                   | 0x0410 | Audio or video microphone.   |
+| AUDIO_VIDEO_LOUDSPEAKER                  | 0x0414 | Audio or video loudspeaker.   |
+| AUDIO_VIDEO_HEADPHONES                   | 0x0418 | Audio or video headphones.   |
+| AUDIO_VIDEO_PORTABLE_AUDIO               | 0x041C | Portable audio or video device.   |
+| AUDIO_VIDEO_CAR_AUDIO                    | 0x0420 | In-vehicle audio or video device.    |
+| AUDIO_VIDEO_SET_TOP_BOX                  | 0x0424 | Audio or video STB device.   |
+| AUDIO_VIDEO_HIFI_AUDIO                   | 0x0428 | High-fidelity speaker device.     |
+| AUDIO_VIDEO_VCR                          | 0x042C | Video cassette recording (VCR) device.   |
+| AUDIO_VIDEO_VIDEO_CAMERA                 | 0x0430 | Camera.   |
+| AUDIO_VIDEO_CAMCORDER                    | 0x0434 | Camcorder   |
+| AUDIO_VIDEO_VIDEO_MONITOR                | 0x0438 | Audio or video monitor.   |
+| AUDIO_VIDEO_VIDEO_DISPLAY_AND_LOUDSPEAKER | 0x043C | Video display or loudspeaker. |
+| AUDIO_VIDEO_VIDEO_CONFERENCING           | 0x0440 | Video conferencing device.    |
+| AUDIO_VIDEO_VIDEO_GAMING_TOY             | 0x0448 | Audio or video gaming toy.  |
+| PERIPHERAL_NON_KEYBOARD_NON_POINTING     | 0x0500 | Non-keyboard or non-pointing peripheral device.  |
+| PERIPHERAL_KEYBOARD                      | 0x0540 | Keyboard device.      |
+| PERIPHERAL_POINTING_DEVICE               | 0x0580 | Pointing peripheral device.    |
+| PERIPHERAL_KEYBOARD_POINTING             | 0x05C0 | Keyboard pointing device.    |
+| PERIPHERAL_UNCATEGORIZED                 | 0x0500 | Unclassified peripheral device.     |
+| PERIPHERAL_JOYSTICK                      | 0x0504 | Peripheral joystick.     |
+| PERIPHERAL_GAMEPAD                       | 0x0508 | Peripheral game pad     |
+| PERIPHERAL_REMOTE_CONTROL                | 0x05C0 | Peripheral remote control device    |
+| PERIPHERAL_SENSING_DEVICE                | 0x0510 | Peripheral sensing device.    |
+| PERIPHERAL_DIGITIZER_TABLET              | 0x0514 | Peripheral digitizer tablet.|
+| PERIPHERAL_CARD_READER                   | 0x0518 | Peripheral card reader.     |
+| PERIPHERAL_DIGITAL_PEN                   | 0x051C | Peripheral digital pen.     |
+| PERIPHERAL_SCANNER_RFID                  | 0x0520 | Peripheral RFID scanner. |
+| PERIPHERAL_GESTURAL_INPUT                | 0x0522 | Gesture input device.    |
+| IMAGING_UNCATEGORIZED                    | 0x0600 | Unclassified imaging device.    |
+| IMAGING_DISPLAY                          | 0x0610 | Imaging display device.      |
+| IMAGING_CAMERA                           | 0x0620 | Imaging camera device.     |
+| IMAGING_SCANNER                          | 0x0640 | Imaging scanner.     |
+| IMAGING_PRINTER                          | 0x0680 | Imaging printer.     |
+| WEARABLE_UNCATEGORIZED                   | 0x0700 | Unclassified wearable device.   |
+| WEARABLE_WRIST_WATCH                     | 0x0704 | Smart watch.     |
+| WEARABLE_PAGER                           | 0x0708 | Wearable pager.    |
+| WEARABLE_JACKET                          | 0x070C | Smart jacket.     |
+| WEARABLE_HELMET                          | 0x0710 | Wearable helmet.     |
+| WEARABLE_GLASSES                         | 0x0714 | Wearable glasses.     |
+| TOY_UNCATEGORIZED                        | 0x0800 | Unclassified toy.    |
+| TOY_ROBOT                                | 0x0804 | Toy robot.     |
+| TOY_VEHICLE                              | 0x0808 | Toy vehicle.       |
+| TOY_DOLL_ACTION_FIGURE                   | 0x080C | Humanoid toy doll.    |
+| TOY_CONTROLLER                           | 0x0810 | Toy controller.     |
+| TOY_GAME                                 | 0x0814 | Toy gaming device.      |
+| HEALTH_UNCATEGORIZED                     | 0x0900 | Unclassified health devices.     |
+| HEALTH_BLOOD_PRESSURE                    | 0x0904 | Blood pressure device.      |
+| HEALTH_THERMOMETER                       | 0x0908 | Thermometer     |
+| HEALTH_WEIGHING                          | 0x090C | Body scale.      |
+| HEALTH_GLUCOSE                           | 0x0910 | Blood glucose monitor.     |
+| HEALTH_PULSE_OXIMETER                    | 0x0914 | Pulse oximeter.   |
+| HEALTH_PULSE_RATE                        | 0x0918 | Heart rate monitor.     |
+| HEALTH_DATA_DISPLAY                      | 0x091C | Health data display.    |
+| HEALTH_STEP_COUNTER                      | 0x0920 | Step counter.   |
+| HEALTH_BODY_COMPOSITION_ANALYZER         | 0x0924 | Body composition analyzer. |
+| HEALTH_PEAK_FLOW_MONITOR                  | 0x0928 | Hygrometer.     |
+| HEALTH_MEDICATION_MONITOR                | 0x092C | Medication monitor.   |
+| HEALTH_KNEE_PROSTHESIS                   | 0x0930 | Prosthetic knee.    |
+| HEALTH_ANKLE_PROSTHESIS                  | 0x0934 | Prosthetic ankle.    |
+| HEALTH_GENERIC_HEALTH_MANAGER            | 0x0938 | Generic health management device.    |
+| HEALTH_PERSONAL_MOBILITY_DEVICE          | 0x093C | Personal mobility device.    |