Android : How to update the selector(StateListDrawable) programmatically

Question

I want to update the selector for a button programmatically.

I can do this with the xml file which is given below

Answer 1

Not enough rep to comment but the accepted answer did not work for me.

My goal was for designers to set enabled, disabled, and pressed background colors on some button. I intended for them to use it to test colors on different displays.

I noticed some other people mentioned it did not work for them either.

The states that need to be defined are

• not pressed and enabled, this is what you see when the button is enabled and not pressed.
• pressed and enabled, this is what you see when the button is pressed and enabled
• not enabled. This is what you see when the button is disabled

Here is some code that will give you an idea of the states. I am using Color.Parse() to generate ints for the colors then I pass them to this method to get the StateListDrawable.

private StateListDrawable createDrawable(int enabled, int pressed, int disabled) {
  StateListDrawable stateListDrawable = new StateListDrawable();

  stateListDrawable.addState(new int[] { -android.R.attr.state_pressed, android.R.attr.state_enabled }, new ColorDrawable(enabled));
  stateListDrawable.addState(new int[] { android.R.attr.state_pressed, android.R.attr.state_enabled }, new ColorDrawable(pressed));
  stateListDrawable.addState(new int[] { -android.R.attr.state_enabled }, new ColorDrawable(disabled));

  return stateListDrawable;
}