[键盘显示隐藏监听] #Android

note.kt

class KeyboardVisibilityListener(
  private val activity: Activity,
  private val rootLayout: ViewGroup,
  private val listener: (isShow: Boolean) -> Unit
) {
  private val keyboardLayoutListener = ViewTreeObserver.OnGlobalLayoutListener {
    val heightDiff = rootLayout.rootView.height - rootLayout.height
    val contentViewTop = activity.window.findViewById<View>(ID_ANDROID_CONTENT).top
    listener(heightDiff > contentViewTop)
  }

  init {
    rootLayout.viewTreeObserver.addOnGlobalLayoutListener(keyboardLayoutListener)
  }

  fun release() {
    rootLayout.viewTreeObserver.removeOnGlobalLayoutListener(keyboardLayoutListener)
  }
}