Your glued-to-bottom-above-ScrollView View will not cover you inputs while opening keyboard

keyboard.kt

import android.graphics.Rect
import android.view.View
import android.view.ViewTreeObserver
import androidx.annotation.Px
import androidx.core.view.marginBottom

/**
 * This View will be marked as static on the screen. Every other view - if focused and placed in
 * scrollable view - will be shown above this view while keyboard is being animated
 *
 * For best visual experience it is assumed, that this view is statically placed on the
 * bottom of the screen without any view below it.
 *
 * If that's not the case, please use [additionalPadding] parameter to make focused
 * views to scroll a bit higher
 */
fun View.setStatic(@Px additionalPadding: Int = 0) {

    rootView.setOnApplyWindowInsetsListener { _, insets ->

        val preDrawListener = object : ViewTreeObserver.OnPreDrawListener{

            var lastTick = 0L
            val tickAnimationThreshold = 50 // 20 FPS

            override fun onPreDraw(): Boolean {
                val focusedView = rootView.findFocus() ?: return true
                val vertical = focusedView.height + height + marginBottom + additionalPadding

                focusedView.requestRectangleOnScreen(Rect(0, 0, focusedView.width, vertical))

                val actualTick = System.currentTimeMillis()
                if (actualTick < (lastTick + tickAnimationThreshold) || lastTick != 0L) {
                    lastTick = actualTick
                } else {
                    rootView.viewTreeObserver.removeOnPreDrawListener(this)
                }

                return true
            }
        }

        rootView.viewTreeObserver.addOnPreDrawListener(preDrawListener)

        insets
    }
}