title: app crashing with "Called From Wrong Thread Exception"
body: <p>I added this part of the code in my <code>onCreate()</code> method and it crashes my app.
  need help.</p>
  
  <p><strong>LOGCAT:</strong></p>
  
  <pre><code>android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread 
  that created a view hierarchy can touch its views.
  </code></pre>
  
  <p><strong>CODE:</strong></p>
  
  <pre><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);
  </code></pre>