Animated ellipses in Android

Animated elipses.kt

val spannableString = SpannableString("Loading...")
val transparentColorSpan = ForegroundColorSpan(Color.TRANSPARENT)

ValueAnimator.ofInt(0, 4).apply {
    repeatCount = 10
    duration = 1000
    addUpdateListener { valueAnimator ->
        val dotsCount = valueAnimator.animatedValue as Int
        if (dotsCount < 4) { // 4 is the number of ellipses + 1
            spannableString.setSpan(
                    transparentColorSpan,
                    7 + dotsCount, // The length of your string WITHOUT the ellipses + dotsCount
                    10 // The total length of your string, WITH the ellipses
                    , Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
            tvLoading.text = spannableString
        }
    }
}.start()