在Android中通過TCP套接字連接時獲取「java.net.BindException：地址已在使用中」

Question

我正在爲它創建一個帶有Android客戶端的桌面應用程序。 目的是將圖像從Android設備發送到桌面，然後在用戶在桌面上執行輕彈手勢後，將同一圖像發送回手機。

從android發送到桌面的工作很好，但是當方法循環監聽端口（嘗試接收圖片）時，LogCat中出現了很多「java.net.BindException：地址已在使用中」。這個異常循環所有的時間，但應用程序不是粉碎。

這裏是從桌面發送數據片段responisible：

public void sendImage(byte[] buffer) 
{ 
    try { 
     Socket s = new Socket("192.168.1.34",8080); 

     DataOutputStream dataOutputStream = null; 
     DataInputStream dataInputStream = null; 

     dataOutputStream = new DataOutputStream(s.getOutputStream()); 
     dataInputStream = new DataInputStream(s.getInputStream()); 

     dataOutputStream.writeInt(buffer.length); 
     dataOutputStream.write(buffer,0, buffer.length); 

     s.close(); 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
} 

而且下面有我的Android應用程序的代碼。當應用程序啓動時，我在單獨的線程上運行「ImageReceiver.class」。 「ImageReceiver」是Observable對象，所以當它改變狀態時，我可以開始新的活動並顯示圖像。

public class FluidPhotoClientActivity extends Activity { 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    Gallery gallery = (Gallery) findViewById(R.id.gallery); 
    gallery.setAdapter(new ImageAdapter(this)); 


    gallery.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView parent, View v, int position, long id) { 

      Toast.makeText(FluidPhotoClientActivity.this, "Sending photo nr: " + position, Toast.LENGTH_SHORT).show(); 

      try { 
       Socket s = new Socket("192.168.1.35",8888); 

       DataOutputStream dataOutputStream = null; 
       DataInputStream dataInputStream = null; 

       dataOutputStream = new DataOutputStream(s.getOutputStream()); 
       dataInputStream = new DataInputStream(s.getInputStream()); 

       Resources res = getResources(); 
       Drawable draw = null; 

       switch(position) // HARDCODED IMAGE POSITION 
       { 
       case 0: 
        draw = res.getDrawable(R.drawable.testimage); 
        break; 
       case 1: 
        draw = res.getDrawable(R.drawable.testimage2); 
        break; 
       } 

       if(draw!=null) 
       { 
        Bitmap bitmap = (Bitmap)((BitmapDrawable) draw).getBitmap(); 
        ByteArrayOutputStream stream = new ByteArrayOutputStream(); 
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream); 

        byte[] buffer = stream.toByteArray(); 

        dataOutputStream.writeInt(buffer.length); 
        dataOutputStream.write(buffer,0, buffer.length); 

        s.close(); 

        dataInputStream.close(); 
        dataOutputStream.close(); 
       } else { 
        Toast.makeText(FluidPhotoClientActivity.this, "Error", Toast.LENGTH_SHORT).show(); 
       } 
      } catch (IOException e) { 
       Toast.makeText(FluidPhotoClientActivity.this, "IOException", Toast.LENGTH_SHORT).show(); 
       e.printStackTrace(); 
      } 
     } 
    }); 

    ImageReceiver ir = new ImageReceiver(); 
    Thread imageListener = new Thread(ir); 
    imageListener.start(); 

    class ImageObserver implements Observer { 
     @Override 
     public void update(Observable arg0, Object arg1) { 
      Log.d("MESSAGE:" , "hello"); 
      showIncomingImage(); 
     } 
    } 
    ImageObserver io = new ImageObserver(); 
    ir.addObserver(io); 
} 
public void showIncomingImage() { 
    startActivity(new Intent(this, SingleViewActivity.class)); 
} 

}

ImageReceiver.class - 我想這就是錯誤正在添加從。

public class ImageReceiver extends Observable implements Runnable { 

private String responseImage; 

public String getResponseImage() { 
    return responseImage; 
} 


@Override 
public void run() { 
    while(1==1) 
    { 
     try { 
      ServerSocket ss = new ServerSocket(8080); 
      Socket s = ss.accept(); 

      DataInputStream dataInputStream = new DataInputStream(s.getInputStream()); 
      DataOutputStream dataOutputStream = new DataOutputStream(s.getOutputStream()); 

      int imageSize = dataInputStream.readInt(); 
      byte[] buffer = new byte[imageSize]; 
      dataInputStream.readFully(buffer, 0, imageSize); 

      Log.d("MESSAGE:", String.valueOf(buffer.length)); 

      ss.close(); 
      s.close(); 
      if(buffer.length > 0) 
      { 
       this.responseImage = String.valueOf(buffer.length); 
       setChanged(); 
       notifyObservers(); 
      } 



     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
    } 

} 

}

正如你可以在上面看到我發送和接收數據使用不同的端口，因此按照我的邏輯「地址不應該已在使用中」 - 如果我理解正確。我正在嘗試不同的端口，但這並沒有幫助。 我將非常感謝所有提示。

Answer 1

在循環之外創建一次ServerSocket。