Set RippleDrawable corner radius programmatically

Question

I create a RippleDrawable like below. But I can\'t change the corner radius of the RippleDrawable. It doesn\'t have a method like setCornerRadii(float[]

Answer 1

I was facing the same issue as you: how to set a corner radius to a RippleDrawable.

A simple manner to proceed is to use a GradientDrawable. You can set a radius with setCornerRadius and then pass the configured instance as the second parameter of the RippleDrawable constructor.

Here is an example:

ColorStateList pressedStates = ColorStateList.valueOf(Color.BLUE);

GradientDrawable contentDrawable = new GradientDrawable();
contentDrawable.setColor(Color.WHITE);
contentDrawable.setCornerRadius(16);

RippleDrawable rippleDrawable = new RippleDrawable(pressedStates, contentDrawable, null);
container.setBackground(rippleDrawable);