CardView's background which will respond to android:state_selected and android:state_pressed

Question

I\'m referring to the answer at https://stackoverflow.com/a/24475228/72437

The proposed answer is using drawable from Android : ?android:attr/selectableItemBac

Answer 1

I've just tried MaterialCardView and this works:

selector_background_color.xml

In the Activity/Fragment:

material_card_view.setOnClickListener {
        it.isActivated = !it.isActivated
}

For the strokeColor though, you can't use a selector. You will have to do it programmatically if you want the stroke color to change as per selector state.

Example for state_activated:

val colorStateList: ColorStateList = 
ResourcesCompat.getColorStateList(resources, 
R.color.selector_stroke_color, null)!!
val colorForState =colorStateList.getColorForState(intArrayOf(android.R.attr.state_activated), colorStateList.defaultColor)
material_card_view.strokeColor = colorForState