与Raspberry Pi 3的蓝牙连接：java.io.IOException：读取失败，套接字可能关闭或超时，读取ret：-1

Question

我是Android新手，并且一直在使用tutorial来设置基本的Android应用程序，可以通过蓝牙连接到Raspberry Pi 3.我正在使用Android 7.0（Nougat）测试应用程序，但在尝试连接时遇到异常：

  

java.io.IOException：读取失败，socket可能关闭或超时，读取ret：-1

这似乎是一个相当普遍的例外，我已经尝试了很多建议来解决它，但无济于事。

我的Thread课程中出现错误。

new Thread(){
    public void run(){
        boolean fail = false;

        BluetoothDevice device = bluetoothAdapter.getRemoteDevice(address);

        try {
            bluetoothSocket = createBluetoothSocket(device);
        } catch(IOException e) {
            fail = true;
            Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_SHORT).show();
        }

        // Establish the Bluetooth socket connection
        try {
            bluetoothSocket.connect();
        } catch(IOException e){
            try {
//                            // fallback method for android >= 4.2
                bluetoothSocket = (BluetoothSocket)device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", UUID.class).invoke(device, BTMODULEUUID);

                try {
                    bluetoothSocket.connect();
                } catch (IOException e2){
                    try{
                        fail = true;
                        bluetoothSocket.close();
                        handler.obtainMessage(CONNECTING_STATUS, -1, -1).sendToTarget();
                    } catch (IOException e3){
                        //@Todo Insert code to handle this
                        Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_SHORT).show();
                    }
                }

            } catch (NoSuchMethodException e2){
                //@Todo Insert code to handle this
                Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_SHORT).show();
            } catch (IllegalAccessException e2){
                //@Todo Insert code to handle this
                Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_SHORT).show();
            } catch (InvocationTargetException e2){
                //@Todo Insert code to handle this
                Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_SHORT).show();
            }


        }

        if(fail == false){
            connectedThread = new ConnectedThread(bluetoothSocket);
            connectedThread.start();

            handler.obtainMessage(CONNECTING_STATUS, 1, -1, name).sendToTarget();
        }
    }
}.start();

代码使用Android＆gt; = 4.2的回退，然后在尝试连接时捕获异常。

我的其余代码与教程相同，但如果需要，我可以发布更多代码。

更新

这已标记为此问题的副本：IOException: read failed, socket might closed - Bluetooth on Android 4.3

我尝试过该解决方案，并收到同样的错误。

bluetoothSocket = (BluetoothSocket)device.getClass().getMethod("createRfcommSocket", new Class[]{Integer.TYPE}).invoke(device, new Object[]{Integer.valueOf(1)});