如何停止Android中的線程？

Question

我有一個線程在我的回調函數如下：

@Override 
public void onConnectError(final BluetoothDevice device, String message) { 
    Log.d("TAG","Trying again in 3 sec."); 
    runOnUiThread(new Runnable() { 
     @Override 
     public void run() { 
      Handler handler = new Handler(); 
      handler.postDelayed(new Runnable() { 
       @Override 
       public void run() { 
        //Do something 
       } 
      }, 2000); 
     } 
    }); 
} 

我會關閉上述線程當我按下後退按鈕或的onDestroy。我該怎麼做。謝謝

@Override 
public void onBackPressed() { 
    // Close or distroy the thread 
} 
@Override 
public void onDestroy() { 
    // Close or distroy the thread 
} 

Answer 1

請做到這一點像

private Handler handler; 
private Runnable runnable; 

@Override 
public void onConnectError(final BluetoothDevice device, String message) { 
Log.d("TAG","Trying again in 3 sec."); 
runOnUiThread(new Runnable() { 
    @Override 
    public void run() { 
     handler = new Handler(); 
runnable = new Runnable() { 
     @Override 
     public void run() { 
//Do something 
     } 
    }; 
handler.postDelayed(runnable, 2000); 
    } 
}); 
} 

and

@Override 
public void onBackPressed() { 
if (handler != null && runnable != null) { 
     handler.removeCallbacks(runnable); 
    } 
} 

and same in onDestroy（）;

Answer 2

我主要使用的線程在這個way.See其獨立的活動

public class TestActivity extends Activity { 

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

    holdConnectionHandler.sendEmptyMessage(0); 

} 

Handler holdConnectionHandler = new Handler() { 

public void handleMessage(android.os.Message msg) { 
// do some work 

    holdConnectionHandler.sendEmptyMessageDelayed(0, 10 * 1000); 
} 
}; 

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

holdConnectionHandler.removeCallbacksAndMessages(null); 
// or 
holdConnectionHandler.removeMessages(0); 

} 
} 

感謝希望這將幫助你