Android: Cloning a drawable in order to make a StateListDrawable with filters

Question

I\'m trying to make a general framework function that makes any Drawable become highlighted when pressed/focused/selected/etc.

My function takes a D

Answer 1

Get clone drawable using newDrawable() but make sure it is mutable otherwise your clone effect gone, I used these few lines of code and it is working as expected. getConstantState() may be null as suggested by annotation, so handle this RunTimeException while you cloning drawable.

Drawable.ConstantState state = d.mutate().getConstantState();
if (state != null) {
    Drawable drawable = state.newDrawable().mutate();
}