Summary: Ctors | Methods | Protected Methods | Inherited Methods

PresenterSwitcher

Kotlin |Java

public abstract class PresenterSwitcher
extends Object

java.lang.Object
↳	androidx.leanback.widget.PresenterSwitcher

Known direct subclasses

HorizontalHoverCardSwitcher

HorizontalHoverCardSwitcher A helper class for showing a hover card view below a HorizontalGridView.

An abstract helper class that switches a view in its parent view using a PresenterSelector. A subclass should implement insertView(View) to define how to add the view in parent, and may optionally override onViewSelected(View).

Summary

Public constructors
`PresenterSwitcher()`

Public methods
`void`	`clear()` Destroys created views.
`final ViewGroup`	`getParentViewGroup()` Returns the parent.
`void`	`init(ViewGroup parent, PresenterSelector presenterSelector)` Initializes the switcher with a parent view to insert view into and a `PresenterSelector` for choosing a `Presenter` for a given object.
`void`	`select(Object object)` Selects a view based on the given object and shows that view.
`void`	`unselect()` Hides the view.

Protected methods
`abstract void`	`insertView(View view)`
`void`	`onViewSelected(View view)` Called when a view is bound to the object of `select(Object)`.
`void`	`showView(View view, boolean visible)`

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()`
`boolean`	`equals(Object arg0)`
`void`	`finalize()`
`final Class<?>`	`getClass()`
`int`	`hashCode()`
`final void`	`notify()`
`final void`	`notifyAll()`
`String`	`toString()`
`final void`	`wait(long arg0, int arg1)`
`final void`	`wait(long arg0)`
`final void`	`wait()`

Public constructors

PresenterSwitcher

public PresenterSwitcher ()

Public methods

clear

public void clear ()

Destroys created views.

getParentViewGroup

public final ViewGroup getParentViewGroup ()

Returns the parent.

Returns
`ViewGroup`

public void init (ViewGroup parent, 
                PresenterSelector presenterSelector)

Initializes the switcher with a parent view to insert view into and a PresenterSelector for choosing a Presenter for a given object. This will destroy any existing views.

Parameters
`parent`	`ViewGroup`
`presenterSelector`	`PresenterSelector`

select

public void select (Object object)

Selects a view based on the given object and shows that view.

Parameters
`object`	`Object`

unselect

public void unselect ()

Hides the view.

Protected methods

insertView

protected abstract void insertView (View view)

Parameters
`view`	`View`

onViewSelected

protected void onViewSelected (View view)

Called when a view is bound to the object of select(Object).

Parameters
`view`	`View`

showView

protected void showView (View view, 
                boolean visible)

Parameters
`view`	`View`
`visible`	`boolean`