Question

I created a listview with drawables say 1,2,3.
I created a button which also has drawable 1.

When I click on the listview item with drawable 1, the drawable from the button disappears.

Any ideas?

Answer 1

Your problem may be caused by the fact that drawables are always shared from a constant Drawable source. If you want to change the characteristics of one of your drawables, you need to call mutate() on it so that your other drawables sharing the same base are not affected. With acknowledgments to Google:

Drawable star = context.getResources().getDrawable(R.drawable.star);
if (book.isFavorite()) {
  star.mutate().setAlpha(255); // opaque
} else {
  star. mutate().setAlpha(70); // translucent
}

Here is the page where that came from.