to do it via code:
(let's say "text" is your TextView
and "level" is an int with your desired level)
Drawable[] drawables = text.getCompoundDrawables();
for (Drawable drawable : drawables) {
if (drawable != null)
drawable.setLevel(level);
}
use this if you are using start/end instead of left/right:
text.getCompoundDrawablesRelative()
this will change the levels of all the drawables, if you just want one of the don't use the for loop