harmony 鸿蒙@ohos.bluetooth.baseProfile (Bluetooth baseProfile Module)

  • 2023-10-30
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@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

import baseProfile from '@ohos.bluetooth.baseProfile';

ConnectionStrategy

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.
This is a system API.
CONNECTION_STRATEGY_ALLOWED 1 Connection strategy to use when the device is allowed to accept or initiate pairing.
This is a system API.
CONNECTION_STRATEGY_FORBIDDEN 2 Connection strategy to use when the device is not allowed to accept or initiate pairing.
This is a system API.

StateChangeParam

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

setConnectionStrategy(deviceId: string, strategy: ConnectionStrategy, callback: AsyncCallback<void>): 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 Yes Profile connection strategy to set.
callback AsyncCallback<void> 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.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.setConnectionStrategy('XX:XX:XX:XX:XX:XX', 0, (err: BusinessError) => {
        console.info('setConnectionStrategy, err: ' + JSON.stringify(err));
    });
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.setConnectionStrategy

setConnectionStrategy(deviceId: string, strategy: ConnectionStrategy): Promise<void>

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 Yes Profile connection strategy to set.

Return value

Type Description
Promise<void> Promise used to return the result.

Error codes

For details about the error codes, see Bluetooth Error Codes.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.setConnectionStrategy('XX:XX:XX:XX:XX:XX', 1).then(() => {
        console.info('setConnectionStrategy');
    }, (err: BusinessError) => {
        console.error('setConnectionStrategy errCode: ' + err.code + ', errMessage: ' + err.message);
    });
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.getConnectionStrategy

getConnectionStrategy(deviceId: string, callback: AsyncCallback<ConnectionStrategy>): 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<ConnectionStrategy> 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.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.getConnectionStrategy('XX:XX:XX:XX:XX:XX', 0, (err: BusinessError, data: baseProfile.ConnectionStrategy) => {
        console.info('getConnectionStrategy, err: ' + JSON.stringify(err) + ', data: ' + JSON.stringify(data));
    });
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.getConnectionStrategy

getConnectionStrategy(deviceId: string): Promise<ConnectionStrategy>

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<ConnectionStrategy> Promise used to return the profile connection strategy obtained.

Error codes

For details about the error codes, see Bluetooth Error Codes.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.getConnectionStrategy('XX:XX:XX:XX:XX:XX', 1).then((data: baseProfile.ConnectionStrategy) => {
        console.info('getConnectionStrategy');
    }, (err: BusinessError) => {
        console.error('getConnectionStrategy errCode: ' + err.code + ', errMessage: ' + err.message);
    });
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.getConnectedDevices

getConnectedDevices(): Array<string>

Obtains the connected devices.

Required permissions: ohos.permission.ACCESS_BLUETOOTH

System capability: SystemCapability.Communication.Bluetooth.Core

Return value

Type Description
Array<string> Addresses of the connected devices.

Error codes

For details about the error codes, see Bluetooth Error Codes.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    let retArray = a2dpSrc.getConnectedDevices();
} catch (err) {
    console.error("errCode:" + (err as BusinessError).code + ",errMessage:" + (err as BusinessError).message);
}

baseProfile.getConnectionState

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 Profile connection state obtained.

Error codes

For details about the error codes, see Bluetooth Error Codes.

ID Error Message
2900001 Service stopped.
2900003 Bluetooth switch is off.
2900004 Profile is not supported.
2900099 Operation failed.

Example

import { BusinessError } from '@ohos.base';
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 as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.on(‘connectionStateChange’)

on(type: ‘connectionStateChange’, callback: Callback<StateChangeParam>): 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<StateChangeParam> Yes Callback invoked to return the profile connection state change.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
function onReceiveEvent(data: baseProfile.StateChangeParam) {
    console.info('a2dp state = '+ JSON.stringify(data));
}
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.on('connectionStateChange', onReceiveEvent);
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

baseProfile.off(‘connectionStateChange’)

off(type: ‘connectionStateChange’, callback?: Callback<StateChangeParam>): 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<StateChangeParam> No Callback for the profile connection state change.

Example

import { BusinessError } from '@ohos.base';
import a2dp from '@ohos.bluetooth.a2dp';
function onReceiveEvent(data: baseProfile.StateChangeParam) {
    console.info('a2dp state = '+ JSON.stringify(data));
}
try {
    let a2dpSrc = a2dp.createA2dpSrcProfile();
    a2dpSrc.on('connectionStateChange', onReceiveEvent);
    a2dpSrc.off('connectionStateChange', onReceiveEvent);
} catch (err) {
    console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message);
}

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