How to change color of drawable shapes in android

Question

I am developing small android application in which I set drawable resource as background for linear layout. Now what I want to do change background color of linear layout dy

Answer 1

The following works great for setting the color of the drawable programmatically without changing its shape:

parentLayout.getBackground().setColorFilter(
    Color.BLACK,
    PorterDuff.Mode.SRC_ATOP
);