How to set View alpha in lower Api than 11?

Question

I need to set alpha for a view. It is ImageButton and on Touch event i want to set alpha that i could see it was pressed. Maybe there some work around on this ? It don't suit me changing background color. Because my background is image and i wan't to change alpha of this image. Also i don't want to use selectors because my images are created dynamically.

Finally if there are no way to do this. So how i could catch exception that it setAlpha isn't supported for Api phone is using ?

Thanks

There are a lot of similar questions here. Use search. http://stackoverflow.com/questions/4813995/set-alpha-opacity-of-layout/4814651#4814651 — Alex Orlov, May 14 '12 at 06:40

score 39 · Accepted Answer · answered Sep 10 '13 at 19:00

I found this snippet of code some time ago. Maybe it will help?

if (Build.VERSION.SDK_INT < 11) {
        final AlphaAnimation animation = new AlphaAnimation(alpha, alpha);
        animation.setDuration(duration);
        animation.setFillAfter(true);
        view.startAnimation(animation);
    } else
        view.setAlpha(alpha);
}

How to set View alpha in lower Api than 11?

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