How to give animation to the ViewSwitcher

I have created one advertisement control which consists of ViewSwitcher....

in that control i have ImageView and TextView because advertisement are of either text or images..

Now i have to give animation to the advetisements..

I have tried following

Animation inAnimation = AnimationUtils.loadAnimation(this, android.R.anim.slide_in_left); inAnimation.setDuration(1500);

Animation outAnimation = AnimationUtils.loadAnimation(this, android.R.anim.slide_out_right); outAnimation.setDuration(1500);

And i set it to the switcher as

ViewSwitcher switcher;

switcher.setInAnimation(inAnimation);

switcher.setOutAnimation(outAnimation);

but it won't work..

Please give me any other alternative.. Or if use of above code is wrong then how to use it??