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androidandroid-actionbaractionbarsherlock

How to animate home button in action bar?

I'm using ActionBarSherlock and I would like to animate the home button to tell the user to click on it. I want to use three different images to show the animation.

How can I do this?

Solution

  • Get the action bar in you onCreate:

    ActionBar actionBar = getSupportActionBar();

    Create and load an animation drawable which you defined in XML:

    // homeDrawable is a field on your activity
homeDrawable = (AnimationDrawable) getResources().getDrawable(R.drawable.my_thing);

    Set the drawable as the icon on the action bar:

    actionBar.setIcon(homeDrawable);

    Post a Runnable to start the animation when the main thread is clear:

    getWindow().getDecorView().post(new Runnable() {
  @Override public void run() {
    homeDrawable.start();
  }
});

    Don't forget to stop the animation at some point!