WindowInsets Handling & Keyboard Animations

Jul 20 2021 · Kotlin 1.5.10, Android 11, Android Studio 4.1.3 and Android Studio Arctic Fox Canary 12

Part 1: Keyboard Handling in Android

05. Animate the Keyboard

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Now that everything is ready, it’s time to animate the keyboard!

@RequiresApi(Build.VERSION_CODES.R)
fun animateKeyboardDisplay() {
  val cb = object : WindowInsetsAnimation.Callback(DISPATCH_MODE_STOP) {
    override fun onProgress(insets: WindowInsets, animations: MutableList<WindowInsetsAnimation>): WindowInsets {
      
      posBottom = insets.getInsets(WindowInsetsCompat.Type.ime()).bottom

      val navBar = view.rootWindowInsets?.getInsets(WindowInsetsCompat.Type.navigationBars())!!

      if (posBottom < navBar.bottom) {
        posBottom = navBar.bottom
      }

      container.updateLayoutParams<ViewGroup.MarginLayoutParams> {
        updateMargins(
          top = posTop,
          bottom = posBottom)
      }
 
      return insets
    }
  }
 
  container.setWindowInsetsAnimationCallback(cb)
}