1e41f4b71Sopenharmony_ci# @ohos.bluetooth.baseProfile (蓝牙baseProfile模块) 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_cibaseProfile模块提供了基础的profile方法。 4e41f4b71Sopenharmony_ci 5e41f4b71Sopenharmony_ci> **说明:** 6e41f4b71Sopenharmony_ci> 7e41f4b71Sopenharmony_ci> 本模块首批接口从API version 10开始支持。后续版本的新增接口,采用上角标单独标记接口的起始版本。 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_ci## 导入模块 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci```js 14e41f4b71Sopenharmony_ciimport { baseProfile } from '@kit.ConnectivityKit'; 15e41f4b71Sopenharmony_ci``` 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci## StateChangeParam 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci描述profile状态改变参数。 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci| 名称 | 类型 | 可读 | 可写 | 说明 | 25e41f4b71Sopenharmony_ci| -------- | ----------------------------- | ---- | ---- | ------------------------------- | 26e41f4b71Sopenharmony_ci| deviceId | string | 是 | 否 | 表示蓝牙设备地址。 | 27e41f4b71Sopenharmony_ci| state | [ProfileConnectionState](js-apis-bluetooth-constant.md#profileconnectionstate) | 是 | 否 | 表示蓝牙设备的profile连接状态。 | 28e41f4b71Sopenharmony_ci| cause<sup>12+</sup>| [DisconnectCause](#disconnectcause12) | 是 | 否 | 表示连接失败的原因。| 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci 31e41f4b71Sopenharmony_ci## DisconnectCause<sup>12+</sup> 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci枚举,连接失败原因。 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci| 名称 | 值 | 说明 | 38e41f4b71Sopenharmony_ci| ------------------ | ---- | ------ | 39e41f4b71Sopenharmony_ci| USER_DISCONNECT | 0 | 用户主动断开连接。| 40e41f4b71Sopenharmony_ci| CONNECT_FROM_KEYBOARD | 1 | 应该从键盘侧发起连接。| 41e41f4b71Sopenharmony_ci| CONNECT_FROM_MOUSE | 2 | 应该从鼠标侧发起连接。| 42e41f4b71Sopenharmony_ci| CONNECT_FROM_CAR | 3 | 应该从车机侧发起连接。| 43e41f4b71Sopenharmony_ci| TOO_MANY_CONNECTED_DEVICES | 4 | 当前连接数超过上限。| 44e41f4b71Sopenharmony_ci| CONNECT_FAIL_INTERNAL | 5 | 内部错误。| 45e41f4b71Sopenharmony_ci 46e41f4b71Sopenharmony_ci 47e41f4b71Sopenharmony_ci## BaseProfile.getConnectedDevices 48e41f4b71Sopenharmony_ci 49e41f4b71Sopenharmony_cigetConnectedDevices(): Array<string> 50e41f4b71Sopenharmony_ci 51e41f4b71Sopenharmony_ci获取已连接设备列表。 52e41f4b71Sopenharmony_ci 53e41f4b71Sopenharmony_ci**需要权限**:ohos.permission.ACCESS_BLUETOOTH 54e41f4b71Sopenharmony_ci 55e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 56e41f4b71Sopenharmony_ci 57e41f4b71Sopenharmony_ci**返回值:** 58e41f4b71Sopenharmony_ci 59e41f4b71Sopenharmony_ci| 类型 | 说明 | 60e41f4b71Sopenharmony_ci| ------------------- | ------------------- | 61e41f4b71Sopenharmony_ci| Array<string> | 返回当前已连接设备的地址。基于信息安全考虑,此处获取的设备地址为随机MAC地址。配对成功后,该地址不会变更;已配对设备取消配对后重新扫描或蓝牙服务下电时,该随机地址会变更。 | 62e41f4b71Sopenharmony_ci 63e41f4b71Sopenharmony_ci**错误码**: 64e41f4b71Sopenharmony_ci 65e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[蓝牙服务子系统错误码](errorcode-bluetoothManager.md)。 66e41f4b71Sopenharmony_ci 67e41f4b71Sopenharmony_ci| 错误码ID | 错误信息 | 68e41f4b71Sopenharmony_ci| -------- | ---------------------------- | 69e41f4b71Sopenharmony_ci|201 | Permission denied. | 70e41f4b71Sopenharmony_ci|801 | Capability not supported. | 71e41f4b71Sopenharmony_ci|2900001 | Service stopped. | 72e41f4b71Sopenharmony_ci|2900003 | Bluetooth disabled. | 73e41f4b71Sopenharmony_ci|2900004 | Profile not supported. | 74e41f4b71Sopenharmony_ci|2900099 | Operation failed. | 75e41f4b71Sopenharmony_ci 76e41f4b71Sopenharmony_ci**示例:** 77e41f4b71Sopenharmony_ci 78e41f4b71Sopenharmony_ci```js 79e41f4b71Sopenharmony_ciimport { AsyncCallback, BusinessError } from '@kit.BasicServicesKit'; 80e41f4b71Sopenharmony_ciimport { a2dp } from '@kit.ConnectivityKit'; 81e41f4b71Sopenharmony_citry { 82e41f4b71Sopenharmony_ci let a2dpSrc = a2dp.createA2dpSrcProfile(); 83e41f4b71Sopenharmony_ci let retArray = a2dpSrc.getConnectedDevices(); 84e41f4b71Sopenharmony_ci} catch (err) { 85e41f4b71Sopenharmony_ci console.error("errCode:" + (err as BusinessError).code + ",errMessage:" + (err as BusinessError).message); 86e41f4b71Sopenharmony_ci} 87e41f4b71Sopenharmony_ci``` 88e41f4b71Sopenharmony_ci 89e41f4b71Sopenharmony_ci 90e41f4b71Sopenharmony_ci## BaseProfile.getConnectionState 91e41f4b71Sopenharmony_ci 92e41f4b71Sopenharmony_cigetConnectionState(deviceId: string): ProfileConnectionState 93e41f4b71Sopenharmony_ci 94e41f4b71Sopenharmony_ci获取设备profile的连接状态。 95e41f4b71Sopenharmony_ci 96e41f4b71Sopenharmony_ci**需要权限**:ohos.permission.ACCESS_BLUETOOTH 97e41f4b71Sopenharmony_ci 98e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 99e41f4b71Sopenharmony_ci 100e41f4b71Sopenharmony_ci**参数:** 101e41f4b71Sopenharmony_ci 102e41f4b71Sopenharmony_ci| 参数名 | 类型 | 必填 | 说明 | 103e41f4b71Sopenharmony_ci| ------ | ------ | ---- | ------- | 104e41f4b71Sopenharmony_ci| deviceId | string | 是 | 远端设备地址。 | 105e41f4b71Sopenharmony_ci 106e41f4b71Sopenharmony_ci**返回值:** 107e41f4b71Sopenharmony_ci 108e41f4b71Sopenharmony_ci| 类型 | 说明 | 109e41f4b71Sopenharmony_ci| ------------------------------------------------- | ----------------------- | 110e41f4b71Sopenharmony_ci| [ProfileConnectionState](js-apis-bluetooth-constant.md#profileconnectionstate) | 返回profile的连接状态。 | 111e41f4b71Sopenharmony_ci 112e41f4b71Sopenharmony_ci**错误码**: 113e41f4b71Sopenharmony_ci 114e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[蓝牙服务子系统错误码](errorcode-bluetoothManager.md)。 115e41f4b71Sopenharmony_ci 116e41f4b71Sopenharmony_ci| 错误码ID | 错误信息 | 117e41f4b71Sopenharmony_ci| -------- | ---------------------------- | 118e41f4b71Sopenharmony_ci|201 | Permission denied. | 119e41f4b71Sopenharmony_ci|401 | Invalid parameter. Possible causes: 1. Mandatory parameters are left unspecified. 2. Incorrect parameter types. 3. Parameter verification failed. | 120e41f4b71Sopenharmony_ci|801 | Capability not supported. | 121e41f4b71Sopenharmony_ci|2900001 | Service stopped. | 122e41f4b71Sopenharmony_ci|2900003 | Bluetooth disabled. | 123e41f4b71Sopenharmony_ci|2900004 | Profile not supported. | 124e41f4b71Sopenharmony_ci|2900099 | Operation failed. | 125e41f4b71Sopenharmony_ci 126e41f4b71Sopenharmony_ci**示例:** 127e41f4b71Sopenharmony_ci 128e41f4b71Sopenharmony_ci```js 129e41f4b71Sopenharmony_ciimport { AsyncCallback, BusinessError } from '@kit.BasicServicesKit'; 130e41f4b71Sopenharmony_ciimport { a2dp } from '@kit.ConnectivityKit'; 131e41f4b71Sopenharmony_citry { 132e41f4b71Sopenharmony_ci let a2dpSrc = a2dp.createA2dpSrcProfile(); 133e41f4b71Sopenharmony_ci let ret = a2dpSrc.getConnectionState('XX:XX:XX:XX:XX:XX'); 134e41f4b71Sopenharmony_ci} catch (err) { 135e41f4b71Sopenharmony_ci console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 136e41f4b71Sopenharmony_ci} 137e41f4b71Sopenharmony_ci``` 138e41f4b71Sopenharmony_ci 139e41f4b71Sopenharmony_ci 140e41f4b71Sopenharmony_ci## BaseProfile.on('connectionStateChange') 141e41f4b71Sopenharmony_ci 142e41f4b71Sopenharmony_cion(type: 'connectionStateChange', callback: Callback<StateChangeParam>): void 143e41f4b71Sopenharmony_ci 144e41f4b71Sopenharmony_ci订阅连接状态变化事件。使用Callback异步回调。 145e41f4b71Sopenharmony_ci 146e41f4b71Sopenharmony_ci**需要权限**:ohos.permission.ACCESS_BLUETOOTH 147e41f4b71Sopenharmony_ci 148e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 149e41f4b71Sopenharmony_ci 150e41f4b71Sopenharmony_ci**参数:** 151e41f4b71Sopenharmony_ci 152e41f4b71Sopenharmony_ci| 参数名 | 类型 | 必填 | 说明 | 153e41f4b71Sopenharmony_ci| -------- | ---------------------------------------- | ---- | ---------------------------------------- | 154e41f4b71Sopenharmony_ci| type | string | 是 | 填写"connectionStateChange"字符串,表示连接状态变化事件。 | 155e41f4b71Sopenharmony_ci| callback | Callback<[StateChangeParam](#statechangeparam)> | 是 | 表示回调函数的入参。 | 156e41f4b71Sopenharmony_ci 157e41f4b71Sopenharmony_ci**错误码**: 158e41f4b71Sopenharmony_ci 159e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[蓝牙服务子系统错误码](errorcode-bluetoothManager.md)。 160e41f4b71Sopenharmony_ci 161e41f4b71Sopenharmony_ci| 错误码ID | 错误信息 | 162e41f4b71Sopenharmony_ci| -------- | ---------------------------- | 163e41f4b71Sopenharmony_ci|201 | Permission denied. | 164e41f4b71Sopenharmony_ci|401 | Invalid parameter. Possible causes: 1. Mandatory parameters are left unspecified. 2. Incorrect parameter types. 3. Parameter verification failed. | 165e41f4b71Sopenharmony_ci|801 | Capability not supported. | 166e41f4b71Sopenharmony_ci 167e41f4b71Sopenharmony_ci**示例:** 168e41f4b71Sopenharmony_ci 169e41f4b71Sopenharmony_ci```js 170e41f4b71Sopenharmony_ciimport { AsyncCallback, BusinessError } from '@kit.BasicServicesKit'; 171e41f4b71Sopenharmony_ciimport { a2dp } from '@kit.ConnectivityKit'; 172e41f4b71Sopenharmony_cifunction onReceiveEvent(data: baseProfile.StateChangeParam) { 173e41f4b71Sopenharmony_ci console.info('a2dp state = '+ JSON.stringify(data)); 174e41f4b71Sopenharmony_ci} 175e41f4b71Sopenharmony_citry { 176e41f4b71Sopenharmony_ci let a2dpSrc = a2dp.createA2dpSrcProfile(); 177e41f4b71Sopenharmony_ci a2dpSrc.on('connectionStateChange', onReceiveEvent); 178e41f4b71Sopenharmony_ci} catch (err) { 179e41f4b71Sopenharmony_ci console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 180e41f4b71Sopenharmony_ci} 181e41f4b71Sopenharmony_ci``` 182e41f4b71Sopenharmony_ci 183e41f4b71Sopenharmony_ci 184e41f4b71Sopenharmony_ci## BaseProfile.off('connectionStateChange') 185e41f4b71Sopenharmony_ci 186e41f4b71Sopenharmony_cioff(type: 'connectionStateChange', callback?: Callback<[StateChangeParam](#statechangeparam)>): void 187e41f4b71Sopenharmony_ci 188e41f4b71Sopenharmony_ci取消订阅连接状态变化事件。 189e41f4b71Sopenharmony_ci 190e41f4b71Sopenharmony_ci**需要权限**:ohos.permission.ACCESS_BLUETOOTH 191e41f4b71Sopenharmony_ci 192e41f4b71Sopenharmony_ci**系统能力**:SystemCapability.Communication.Bluetooth.Core。 193e41f4b71Sopenharmony_ci 194e41f4b71Sopenharmony_ci**参数:** 195e41f4b71Sopenharmony_ci 196e41f4b71Sopenharmony_ci| 参数名 | 类型 | 必填 | 说明 | 197e41f4b71Sopenharmony_ci| -------- | ---------------------------------------- | ---- | ---------------------------------------- | 198e41f4b71Sopenharmony_ci| type | string | 是 | 填写"connectionStateChange"字符串,表示连接状态变化事件。 | 199e41f4b71Sopenharmony_ci| callback | Callback<[StateChangeParam](#statechangeparam)> | 否 | 表示回调函数的入参。 | 200e41f4b71Sopenharmony_ci 201e41f4b71Sopenharmony_ci**错误码**: 202e41f4b71Sopenharmony_ci 203e41f4b71Sopenharmony_ci以下错误码的详细介绍请参见[蓝牙服务子系统错误码](errorcode-bluetoothManager.md)。 204e41f4b71Sopenharmony_ci 205e41f4b71Sopenharmony_ci| 错误码ID | 错误信息 | 206e41f4b71Sopenharmony_ci| -------- | ---------------------------- | 207e41f4b71Sopenharmony_ci|201 | Permission denied. | 208e41f4b71Sopenharmony_ci|401 | Invalid parameter. Possible causes: 1. Mandatory parameters are left unspecified. 2. Incorrect parameter types. 3. Parameter verification failed. | 209e41f4b71Sopenharmony_ci|801 | Capability not supported. | 210e41f4b71Sopenharmony_ci 211e41f4b71Sopenharmony_ci**示例:** 212e41f4b71Sopenharmony_ci 213e41f4b71Sopenharmony_ci```js 214e41f4b71Sopenharmony_ciimport { AsyncCallback, BusinessError } from '@kit.BasicServicesKit'; 215e41f4b71Sopenharmony_ciimport { a2dp } from '@kit.ConnectivityKit'; 216e41f4b71Sopenharmony_cifunction onReceiveEvent(data: baseProfile.StateChangeParam) { 217e41f4b71Sopenharmony_ci console.info('a2dp state = '+ JSON.stringify(data)); 218e41f4b71Sopenharmony_ci} 219e41f4b71Sopenharmony_citry { 220e41f4b71Sopenharmony_ci let a2dpSrc = a2dp.createA2dpSrcProfile(); 221e41f4b71Sopenharmony_ci a2dpSrc.on('connectionStateChange', onReceiveEvent); 222e41f4b71Sopenharmony_ci a2dpSrc.off('connectionStateChange', onReceiveEvent); 223e41f4b71Sopenharmony_ci} catch (err) { 224e41f4b71Sopenharmony_ci console.error('errCode: ' + (err as BusinessError).code + ', errMessage: ' + (err as BusinessError).message); 225e41f4b71Sopenharmony_ci} 226e41f4b71Sopenharmony_ci```