android 蓝牙设备 是否打开通话音频
时间: 2023-07-30 09:11:58 浏览: 164
你可以通过监听音频路由状态,来判断蓝牙设备是否打开通话音频。以下是一些示例代码:
1. 创建一个BroadcastReceiver用于监听音频路由状态的变化:
```
private BroadcastReceiver mBluetoothScoReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, -1);
if (state == AudioManager.SCO_AUDIO_STATE_CONNECTED) {
// 蓝牙设备已连接并且打开了通话音频
} else if (state == AudioManager.SCO_AUDIO_STATE_DISCONNECTED) {
// 蓝牙设备已断开连接或关闭了通话音频
}
}
};
```
2. 在Activity或Service中注册BroadcastReceiver:
```
IntentFilter filter = new IntentFilter(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED);
registerReceiver(mBluetoothScoReceiver, filter);
```
3. 在不需要时取消注册BroadcastReceiver:
```
unregisterReceiver(mBluetoothScoReceiver);
```
请注意,这些代码只是示例代码,需要根据你的具体需求进行调整和修改。同时,还需要注意一些权限的设置,比如 `BLUETOOTH` 和 `BLUETOOTH_ADMIN` 权限等。
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