How to reset a button's background color to default?

Question

I read a couple of posts but none of them had the working solution.

Once you do

button.setBackgroundColor(0x00000000); 

How do you revert the button's background color back to default color?

Answer 1

use:

btn.setBackgroundResource(android.R.drawable.btn_default); 

Answer 2

If the background color was set using

btn.getBackground().setColorFilter(Color.RED, PorterDuff.Mode.MULTIPLY); 

it can be reset using:

btn.getBackground().clearColorFilter(); 

In contrast to button.setBackgroundColor() setting the color this way preserves the button's shape.