Question

In a Custom ListView i have a TextView whose Text must change periodically every 1 min, to the Current Time and Date.

So i did this:

Timer mTimer = new Timer();
mTimer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {

currentTime = System.currentTimeMillis();
(holder.myText).setText(new Date(currentTime));
}
}, 0, 60000);

in the getView of the Custom Adapter.

It works for the First time, because getView is called when setting the Adapter for the 1st time.

Next time it gives Exception:

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

so where exactly should i use this code?

If my practice itself is bad, please give me an idea how to achieve this.

Thank You

Answer 1

You can’t update a UI object from a Thread that is not the UI Thread.
Try this:

this.runOnUiThread(new Runnable(){
   @Override
   public void run(){
       //update your TextView here
   }   
})