java在Android上发现蓝牙设备（示例）不起作用

Question

   final BroadcastReceiver bReceiver = new BroadcastReceiver() {
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {
                 BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                 BTArrayAdapter.add(device.getName() + "\n" + device.getAddress());
                 BTArrayAdapter.notifyDataSetChanged();
            }
        }
    };

   public void find(View view) {
       if (myBluetoothAdapter.isDiscovering()) {
           myBluetoothAdapter.cancelDiscovery();
       }
       else {
            BTArrayAdapter.clear();
            myBluetoothAdapter.startDiscovery();

            registerReceiver(bReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));    
        }    
   }

按“findBtn”时，没有任何设备。开发者的简单代码。安卓通用域名格式。如何正确发现？代码中有错误吗？ 例如here

Answer 1

我以前也有同样的问题

You can Look up to this app

Or you can refer to this library