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

Very late response here but in case anyone else is having problems setting a StateListDrawable programmatically. Then as with the XML files the order in which you set the states into the StateListDrawable is important.

For example this will work as expected:

StateListDrawable sld = new StateListDrawable();
sld.addState(new int[] { android.R.attr.state_pressed }, new ColorDrawable(Color.GRAY));
sld.addState(new int[] {}, new ColorDrawable(Color.GREEN));

This won't:

StateListDrawable sld = new StateListDrawable();
sld.addState(new int[] {}, new ColorDrawable(Color.GREEN));
sld.addState(new int[] { android.R.attr.state_pressed }, new ColorDrawable(Color.GRAY));