java.io.IOException：读取失败，socket可能关闭或超时android 5.1.1

Question

我试图将手机连接到嵌入在arduino中的蓝牙模块HC-05。但我明白了，它抛出了一个奇怪的例外。有人可以告诉我为什么我面临这个问题，如果可能的话，我该如何解决这个问题？ 这是我的代码......

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.io.IOException;
import java.util.UUID;

public class MainActivity extends AppCompatActivity {

    Button btn;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn= (Button)findViewById(R.id.button);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
                BluetoothDevice bluetoothDevice = bluetoothAdapter.getRemoteDevice("98:D3:33:80:67:F2");
                ConnectThread connectThread =new ConnectThread(bluetoothDevice);
                connectThread.start();
            }
        });
    }


    class ConnectThread extends Thread{

        BluetoothSocket mmBluetoothSocket;
        BluetoothDevice mmBLuetoothDevice;
        private final UUID myuuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");

        public ConnectThread(BluetoothDevice bluetoothDevice){
            mmBLuetoothDevice = bluetoothDevice;
            BluetoothSocket tmp = null;
            try {
                tmp =  mmBLuetoothDevice.createInsecureRfcommSocketToServiceRecord(myuuid);
            } catch (IOException e) {
                e.printStackTrace();
            }
            mmBluetoothSocket = tmp;
        }
        @Override
        public void run() {
            try {
                mmBluetoothSocket.connect();  //java.io.IOException: read failed, socket might closed or timeout,
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                mmBluetoothSocket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return;
        }


        public void cancel()  {
            try {
                mmBluetoothSocket.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

我正面临这个异常java.io.IOException: read failed, socket might closed or timeout.我以前从未遇到过此异常。