ViewTreeViewModelStoreOwner

java.lang.Object

icyllis.modernui.lifecycle.ViewTreeViewModelStoreOwner

public class ViewTreeViewModelStoreOwner extends Object

Accessors for finding a view tree-local ViewModelStoreOwner that allows access to a ViewModelStore for the given view.

Method Summary

Modifier and Type

Method

Description

static ViewModelStoreOwner

get(View view)

Retrieve the ViewModelStoreOwner associated with the given View.

static void

set(View view, ViewModelStoreOwner viewModelStoreOwner)

Set the ViewModelStoreOwner associated with the given View.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- set
  
  public static void set(@Nonnull View view, @Nullable ViewModelStoreOwner viewModelStoreOwner)
  
  Set the ViewModelStoreOwner associated with the given View. Calls to get(View) from this view or descendants will return viewModelStoreOwner.
  This should only be called by constructs such as activities or fragments that manage a view tree and retain state through a ViewModelStoreOwner. Callers should only set a ViewModelStoreOwner that will be stable. The associated ViewModelStore should be cleared if the view tree is removed and is not guaranteed to later become reattached to a window.
  
  Parameters:
  
  view - Root view associated with the viewModelStoreOwner
  
  viewModelStoreOwner - ViewModelStoreOwner associated with the given view
- get
  
  @Nullable public static ViewModelStoreOwner get(@Nonnull View view)
  
  Retrieve the ViewModelStoreOwner associated with the given View. This may be used to retain state associated with this view across configuration changes.
  
  Parameters:
  
  view - View to fetch a ViewModelStoreOwner for
  
  Returns:
  
  The ViewModelStoreOwner associated with this view and/or some subset of its ancestors