public abstract class

ObjectAdapter

extends Object

java.lang.Object
↳	android.support.v17.leanback.widget.ObjectAdapter

Known Direct Subclasses

ArrayObjectAdapter, CursorObjectAdapter, SparseArrayObjectAdapter

Class Overview

Adapter for leanback activities. Provides access to a data model and is decoupled from the presentation of the items via PresenterSelector.

Summary

Nested Classes
class	ObjectAdapter.DataObserver	A DataObserver can be notified when an ObjectAdapter's underlying data changes.

Constants
int	NO_ID	Indicates that an id has not been set.

Public Constructors
	ObjectAdapter(PresenterSelector presenterSelector) Construct an adapter with the given `PresenterSelector`.
	ObjectAdapter(Presenter presenter) Construct an adapter that uses the given `Presenter` for all items.
	ObjectAdapter() Construct an adapter.

Public Methods
abstract Object	get(int position) Returns the item for the given position.
long	getId(int position) Returns id for the given position.
final Presenter	getPresenter(Object item) Returns the `Presenter` for the given item from the adapter.
final PresenterSelector	getPresenterSelector() Returns the presenter selector for this ObjectAdapter.
final boolean	hasStableIds() Indicates whether the item ids are stable across changes to the underlying data.
final void	registerObserver(ObjectAdapter.DataObserver observer) Register a DataObserver for data change notifications.
final void	setHasStableIds(boolean hasStableIds) Sets whether the item ids are stable across changes to the underlying data.
final void	setPresenterSelector(PresenterSelector presenterSelector) Set the presenter selector.
abstract int	size() Returns the number of items in the adapter.
final void	unregisterAllObservers() Unregister all DataObservers for this ObjectAdapter.
final void	unregisterObserver(ObjectAdapter.DataObserver observer) Unregister a DataObserver for data change notifications.

Protected Methods
final void	notifyChanged()
final void	notifyItemRangeChanged(int positionStart, int itemCount)
final void	notifyItemRangeInserted(int positionStart, int itemCount)
final void	notifyItemRangeRemoved(int positionStart, int itemCount)
void	onHasStableIdsChanged() Called when `setHasStableIds(boolean)` is called and the status of stable ids has changed.
void	onPresenterSelectorChanged() Called when `setPresenterSelector(PresenterSelector)` is called and the PresenterSelector differs from the previous one.

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Inherited Methods

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

Constants

public static final int NO_ID

Indicates that an id has not been set.

Constant Value: -1 (0xffffffff)

Public Constructors

public ObjectAdapter (PresenterSelector presenterSelector)

Construct an adapter with the given PresenterSelector.

public ObjectAdapter (Presenter presenter)

Construct an adapter that uses the given Presenter for all items.

public ObjectAdapter ()

Construct an adapter.

Public Methods

public abstract Object get (int position)

Returns the item for the given position.

public long getId (int position)

Returns id for the given position.

public final Presenter getPresenter (Object item)

Returns the Presenter for the given item from the adapter.

public final PresenterSelector getPresenterSelector ()

Returns the presenter selector for this ObjectAdapter.

public final boolean hasStableIds ()

Indicates whether the item ids are stable across changes to the underlying data. When this is true, clients of the ObjectAdapter can use getId(int) to correlate Objects across changes.

public final void registerObserver (ObjectAdapter.DataObserver observer)

public final void setHasStableIds (boolean hasStableIds)

Sets whether the item ids are stable across changes to the underlying data.

public final void setPresenterSelector (PresenterSelector presenterSelector)

Set the presenter selector. May not be null.

public abstract int size ()

Returns the number of items in the adapter.

public final void unregisterAllObservers ()

Unregister all DataObservers for this ObjectAdapter.

public final void unregisterObserver (ObjectAdapter.DataObserver observer)

Unregister a DataObserver for data change notifications.

Protected Methods

protected final void notifyChanged ()

protected final void notifyItemRangeChanged (int positionStart, int itemCount)

protected final void notifyItemRangeInserted (int positionStart, int itemCount)

protected final void notifyItemRangeRemoved (int positionStart, int itemCount)

protected void onHasStableIdsChanged ()

Called when setHasStableIds(boolean) is called and the status of stable ids has changed.

protected void onPresenterSelectorChanged ()

Called when setPresenterSelector(PresenterSelector) is called and the PresenterSelector differs from the previous one.

Results

Interfaces

Classes