CustomShrinkLayoutBehavior.kt

class CustomShrinkLayoutBehavior(context: Context, attrs: AttributeSet) :
    CoordinatorLayout.Behavior<NestedScrollView>(context, attrs) {

    private var screenHeight: Int = context.resources.displayMetrics.heightPixels

    override fun layoutDependsOn(parent: CoordinatorLayout, child: NestedScrollView, dependency: View): Boolean {
        return dependency is AppBarLayout
    }

    override fun onDependentViewChanged(parent: CoordinatorLayout, child: NestedScrollView, dependency: View): Boolean {
        if (dependency is AppBarLayout) {
            updateAssetChartSize(child, dependency)
        }

        return true
    }

    private fun updateAssetChartSize(child: View, dependency: View) {
        val chart = (child as NestedScrollView)
        val layoutParams = child.layoutParams
        layoutParams.height = screenHeight - dependency.bottom
        chart.layoutParams = layoutParams
        chart.translationY = dependency.bottom.toFloat()
        chart.invalidate()
    }
}