Custom Checkable View which responds to Selector

Question

I have a group of FrameLayout which I want to be checkable/selectable,

That is, after a click I would like the FrameLayout to display as

Answer 1

Try using android:state_activated.

From the docs:

State value for StateListDrawable, set when a view or its parent has been "activated" meaning the user has currently marked it as being of interest.