“Only the original thread that created a view hierarchy can touch its views.” error when using TimerTask

Question

I have created an app composed of one single activity which include a single TextView. Here is the XML of my activity :

activity_main.xml

Answer 1

You need to perform

text.setText("test");

in UI thread. You can do so using Handlers.

final Handler myHandler = new Handler();
myHandler.post(myRunnable);



   final Runnable myRunnable = new Runnable() {
      public void run() {
        text.setText("test");
      }
   };