Get a Bitmap from a Drawable resource id

getBitmapFromDrawable.kt

fun getBitmapFromDrawable(resId: Int): Bitmap? {
    val drawable = AppCompatResources.getDrawable(requireContext(), resId) ?: return null
    val bitmap = Bitmap.createBitmap(
        drawable.intrinsicWidth,
        drawable.intrinsicHeight,
        Bitmap.Config.ARGB_8888
    )
    val canvas = Canvas(bitmap)
    drawable.setBounds(0, 0, canvas.width, canvas.height)
    drawable.draw(canvas)
    return bitmap
}