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

03. Read the Keyboard Height

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val rect = Rect()

val decorView = requireActivity().window.decorView
val root: View = decorView.findViewById(android.R.id.content)
decorView.getWindowVisibleDisplayFrame(rect)
val keyboardHeight = root.rootView.height - rect.bottom

val decorView = requireActivity().window.decorView
val root: View = decorView.findViewById(android.R.id.content)
root.viewTreeObserver.addOnGlobalLayoutListener {
  
  val rect = Rect()
  decorView.getWindowVisibleDisplayFrame(rect)
  val keyboardHeight = root.rootView.height - rect.bottom
}

private const val THRESHOLD = 200

val decorView = requireActivity().window.decorView
val root: View = decorView.findViewById(android.R.id.content)
root.viewTreeObserver.addOnGlobalLayoutListener {
  
  val rect = Rect()
  decorView.getWindowVisibleDisplayFrame(rect)
  val keyboardHeight = root.rootView.height - rect.bottom
  if (keyboardHeight < THRESHOLD) {
  	Toast.makeText(context, "Keyboard open!", Toast.LENGTH_SHORT).show()
  } else {
  	Toast.makeText(context, "Keyboard closed!", Toast.LENGTH_SHORT).show()
  }
}

view?.rootWindowInsets?.getInsets(WindowInsetsCompat.Type.ime())?.bottom

ViewCompat.setOnApplyWindowInsetsListener(requireView()) { v, insets ->
  val height = view?.rootWindowInsets?.getInsets(WindowInsetsCompat.Type.ime())?.bottom
  insets!!
}