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);
}