OnHierarchyChangeListener

Kotlin |Java

interface OnHierarchyChangeListener

android.view.ViewGroup.OnHierarchyChangeListener

Known Direct Subclasses

WebView

A View that displays web pages.

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