应用程序崩溃与“调用错误线程异常”

Question

我在我的onCreate()方法中添加了这部分代码，它崩溃了我的应用程序。 需要帮助。

logcat的：

android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread 
that created a view hierarchy can touch its views. 

CODE：

final TextView timerDisplayPanel = (TextView) findViewById(R.id.textView2); 

    Timer t = new Timer(); 
    t.schedule(new TimerTask(){ 
     public void run(){ 
      timerInt++; 
      Log.d("timer", "timer"); 
      timerDisplayPanel.setText("Time ="+ timerInt +"Sec"); 
     } 
    },10, 1000); 

Answer 1

Only the original thread that created a view hierarchy can touch its views. 

您正试图改变UI元素在非UI线程的文本，所以它提供了异常。使用runOnUiThread

Timer t = new Timer(); 
t.schedule(new TimerTask() { 
public void run() { 
     timerInt++; 
     Log.d("timer", "timer"); 

     runOnUiThread(new Runnable() { 
      @Override 
      public void run() { 
       timerDisplayPanel.setText("Time =" + timerInt + "Sec"); 
      } 
     }); 

    } 
}, 10, 1000);