Android:如何通过蓝牙连接读取输入流中的字符串？

<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled()) {
    Intent enableBluetoothIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
    startActivityForResult(enableBluetoothIntent, REQUEST_ENABLE_BLUETOOTH);
}

BluetoothDevice targetDevice = null;
Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
for (BluetoothDevice device : pairedDevices) {
    if (device.getName().equals("目标设备名称")) {
        targetDevice = device;
        break;
    }
}

BluetoothSocket socket = targetDevice.createRfcommSocketToServiceRecord(MY_UUID);
socket.connect();
InputStream inputStream = socket.getInputStream();

BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
StringBuilder stringBuilder = new StringBuilder();
while ((line = reader.readLine()) != null) {
    stringBuilder.append(line);
}
String result = stringBuilder.toString();