Added in API level 1

OnHierarchyChangeListener


interface OnHierarchyChangeListener
android.view.ViewGroup.OnHierarchyChangeListener

Interface definition for a callback to be invoked when the hierarchy within this view changed. The hierarchy changes whenever a child is added to or removed from this view.

Summary

Public methods
abstract Unit
onChildViewAdded(parent: View!, child: View!)

Called when a new child is added to a parent view.

abstract Unit
onChildViewRemoved(parent: View!, child: View!)

Called when a child is removed from a parent view.

Public methods

onChildViewAdded

Added in API level 1
abstract fun onChildViewAdded(
    parent: View!,
    child: View!
): Unit

Called when a new child is added to a parent view.

Parameters
parent View!: the view in which a child was added
child View!: the new child view added in the hierarchy

onChildViewRemoved

Added in API level 1
abstract fun onChildViewRemoved(
    parent: View!,
    child: View!
): Unit

Called when a child is removed from a parent view.

Parameters
parent View!: the view from which the child was removed
child View!: the child removed from the hierarchy