using a custom color for button background while using selectableItemBackground attribute

Question

I am trying to use

android:background=\"?android:attr/selectableItemBackground\"

to get my button to do appropriate effects for each android versi

Answer 1

if you want to do it programmatically:

fun setSelectableBgWithColor(view: View, bgColor: Int? = null) {
    val bgSelectable = getDrawableResCompat(view.context, android.R.attr.selectableItemBackground)
    val bg = if (bgColor == null) bgSelectable else LayerDrawable(
        arrayOf(ColorDrawable(color), bgSelectable)
    )

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
        view.background = bg
    } else {
        view.setBackgroundDrawable(bg)
    }
}

fun getDrawableResCompat(context: Context, @AttrRes id: Int): Drawable? {
    return TypedValue()
        .also { context.theme.resolveAttribute(id, it, true) }
        .let {
            val resId = if (it.resourceId != 0) it.resourceId else it.data
            ContextCompat.getDrawable(context, resId)
        }
}