In Android, how do I smoothly fade the background from one color to another? (How to use threads)

Question

I\'ve been playing with Android programming on and off for a couple of weeks, and I\'m trying to get something to work that seems simple, but I think I am missing something.

Answer 1

private fun applyColorFade(fromColor: Int, toColor: Int) {
    ObjectAnimator.ofObject(
        toolbar, "backgroundColor", ArgbEvaluator(), 
        fromColor,
        toColor
    ).apply {
      duration = 2000
      startDelay = 200
      start()
    }
}

// this is a reusable method for color fade animation for a view