无法使用Bluetooth HC-06发送数据 - 应用程序停止工作

Question

我正尝试在Arduino和Android设备之间创建连接。 我使用：

• Arduino的莱昂纳多
• 蓝牙设备：HC-06

我的Android应用程序应该读的Arduino设备发送数据。这是Arduino的代码。

​​

我的应用程序正在使用的Arduino的连接，但事情是，当它出来我的应用程序崩溃从Arduino的接收数据。它说“不幸的是，蓝牙应用已停用”。

奇怪的是，我可以使用Android的蓝牙终端应用程序从Arduino接收数据。

下面是Android代码：

package com.example.matt.onresumeapp; 

import android.bluetooth.BluetoothSocket; 
import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.widget.TextView; 
import android.os.Handler; 
import android.os.Message; 
import android.bluetooth.BluetoothAdapter; 
import android.bluetooth.BluetoothDevice; 
import android.bluetooth.BluetoothServerSocket; 
import android.widget.Toast; 

import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.lang.String; 
import java.util.UUID; 

public class ComunicationActivity extends AppCompatActivity { 


    TextView copyInfo; 
    TextView handlerInfo; 
    Handler h; 
    BluetoothAdapter btAdapter; 

    private String adress; 
    private ConnectedThread mConnectedThread; 
    private static UUID myUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); 
    private BluetoothSocket mmSocket; 
    private StringBuilder stBuilder = new StringBuilder(); 

    final int handlerState = 0; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_comunication); 

     copyInfo = (TextView) findViewById(R.id.copyInfo); 
     handlerInfo = (TextView) findViewById(R.id.handlerInfo); 



     h = new Handler() { 

      @Override 
      public void handleMessage(Message msg) { 
       super.handleMessage(msg); 

       if(msg.what == handlerState){ 

        String readMessage = (String) msg.obj; 
        stBuilder.append(readMessage); 

        int endOfLine = stBuilder.indexOf("~"); 


        if(stBuilder.charAt(0) == '#'){ 

         String dataInPrint = stBuilder.substring(1, endOfLine); 
         handlerInfo.setText(dataInPrint); 

        } 

        stBuilder.delete(0, endOfLine); 

       } 

      } 
     }; 

     btAdapter = BluetoothAdapter.getDefaultAdapter(); 

    } 

    private BluetoothSocket btSocketConnection (BluetoothDevice device) throws IOException{ 

     return device.createInsecureRfcommSocketToServiceRecord(myUUID); 
    } 


    @Override 
    public void onResume() { 
     super.onResume(); 

     Intent newIntent = getIntent(); 
     adress = newIntent.getStringExtra("EXTRA_ADRESS"); 


     BluetoothDevice device = btAdapter.getRemoteDevice(adress); 

     try { 
      mmSocket = btSocketConnection(device); 



     } catch (IOException e) { 

      Toast.makeText(getBaseContext(), "Socket's method failed", Toast.LENGTH_LONG).show(); 

     } 

     try { 
      mmSocket.connect(); 
     } catch (IOException e){ 

      try { 

       mmSocket.close(); 
      } catch (IOException e1) 
      { 
       Toast.makeText(getBaseContext(), "Socket's connect() method failed", Toast.LENGTH_LONG).show(); 
      } 

     } 
     mConnectedThread = new ConnectedThread(mmSocket); 
     mConnectedThread.start(); 


    } 



    private class ConnectedThread extends Thread{ 

     private InputStream mmInStream; 
     private OutputStream mmOutStream; 

     public ConnectedThread(BluetoothSocket socket){ 

      mmSocket = socket; 

      InputStream tmpIn = null; 
      OutputStream tmpOut= null; 

      try { 

       tmpIn = socket.getInputStream(); 
       tmpOut = socket.getOutputStream(); 
      } catch (IOException e){ 

       Toast.makeText(getBaseContext(), "Error occurred when creating input stream", Toast.LENGTH_LONG).show(); 

      } 

      try { 
       tmpOut = socket.getOutputStream(); 

      } catch (IOException e){ 


       Toast.makeText(getBaseContext(), "Error occurred when creating output stream", Toast.LENGTH_LONG).show(); 
      } 

      mmInStream = tmpIn; 
      mmOutStream = tmpOut; 

     } 


     public void run() { 
      super.run(); 

      byte[] mmBuffer = new byte[1024]; 
      int numBytes; 

      while (true){ 
       try{ 
        numBytes = mmInStream.read(mmBuffer); 

        String readMessage = new String(mmBuffer, 0, numBytes); 
        h.obtainMessage(handlerState, numBytes, -1, readMessage).sendToTarget(); 

       } catch (IOException e){ 

        Toast.makeText(getBaseContext(), "Input stream was disconnected", Toast.LENGTH_LONG).show(); 
        break; 
       } 

      } 

     } 
    } 

} 

我试图解决这个问题了几天，但没有任何陆侃...... 我愿意为任何帮助，非常感谢。

谢谢！

Answer 1

解决：

只是改变了处理方法本：

h = new Handler() { 

      @Override 
      public void handleMessage(Message msg) { 
       super.handleMessage(msg); 

       if(msg.what == handlerState){ 

        byte[] rBuff = (byte[]) msg.obj; 

        String readMessage = new String(rBuff, 0, msg.arg1); 
        handlerInfo.setText(readMessage); 

       } 

      } 
     };