How to change shape color dynamically?
Solution 1:
You could modify it simply like this
GradientDrawable bgShape = (GradientDrawable)btn.getBackground();
bgShape.setColor(Color.BLACK);
Solution 2:
For me, it crashed because getBackground returned a GradientDrawable instead of a ShapeDrawable.
So i modified it like this:
((GradientDrawable)someView.getBackground()).setColor(someColor);