Example showing how to use PropertyValuesHolder to animate a custom views properties.

ValueAnimator.kt

private fun animateToPoint(point: Point) {
    val propertyX = PropertyValuesHolder.ofFloat(ColorDropperView.PROPERTY_X, dropperPoint.x, point.x)
    val propertyY = PropertyValuesHolder.ofFloat(ColorDropperView.PROPERTY_Y, dropperPoint.y, point.y)

    val animator = ValueAnimator()
    animator.setValues(propertyX, propertyY)
    animator.interpolator = OvershootInterpolator()
    animator.duration = 100
    animator.addUpdateListener { animation ->
        val animatedX = animation.getAnimatedValue(ColorDropperView.PROPERTY_X) as Float
        val animatedY = animation.getAnimatedValue(ColorDropperView.PROPERTY_Y) as Float
        setPoint(Point(animatedX, animatedY))
    }
    animator.start()
}