在6.0.1中搜索附近的蓝牙

Question

我正在使用一个搜索附近蓝牙的应用程序.我使用下面的代码,它在5.0中找到它返回附近的蓝牙设备,但是当我在6.0.1中测试时BluetoothDevice.ACTION_FOUND没有被调用,只有BluetoothAdapter.ACTION_DISCOVERY_STARTED和BluetoothAdapter.ACTION_DISCOVERY_FINISHED被调用.

@Override
protected void onCreate(Bundle savedInstanceState) {
    BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
    bluetoothAdapter = bluetoothManager.getAdapter();
    Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
    discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,0);
    startActivity(discoverableIntent);
}
private final BroadcastReceiver bReciever = new BroadcastReceiver() {
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        System.out.println(action);
        if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            System.out.println(device);
        }
    }
};
public void onSearch(View v){
    if (bluetoothAdapter.isDiscovering()) {
        bluetoothAdapter.cancelDiscovery();
    }
    System.out.println(bluetoothAdapter.startDiscovery());
    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
    intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
    intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
    registerReceiver(bReciever, intentFilter);

}

我的问题是为什么在6.0.1中没有调用BluetoothDevice.ACTION_FOUND？谢谢.

Answer 1

您是否检查了应用程序管理器中的权限？

转到“设置”->“应用程序”->“您的应用程序” ->“权限”。

并检查是否授予蓝牙权限。