public class

ItemBridgeAdapter

extends Adapter

java.lang.Object
↳	android.support.v7.widget.RecyclerView.Adapter
	↳	android.support.v17.leanback.widget.ItemBridgeAdapter

Class Overview

Bridge from Presenter to RecyclerView.Adapter. Public to allow use by third party presenters.

Summary

Nested Classes
class	ItemBridgeAdapter.AdapterListener	Interface for listening to view holder operations.
class	ItemBridgeAdapter.ViewHolder
class	ItemBridgeAdapter.Wrapper	Interface for wrapping a view created by presenter into another view.

Public Constructors
	ItemBridgeAdapter(ObjectAdapter adapter, PresenterSelector presenterSelector)
	ItemBridgeAdapter(ObjectAdapter adapter)
	ItemBridgeAdapter()

Public Methods
void	clear()
int	getItemCount() Returns the total number of items in the data set hold by the adapter.
long	getItemId(int position) Return the stable ID for the item at `position`.
int	getItemViewType(int position) Return the view type of the item at `position` for the purposes of view recycling.
ArrayList<Presenter>	getPresenterMapper()
ItemBridgeAdapter.Wrapper	getWrapper()
final void	onBindViewHolder(RecyclerView.ViewHolder holder, int position) Called by RecyclerView to display the data at the specified position.
final RecyclerView.ViewHolder	onCreateViewHolder(ViewGroup parent, int viewType) `View.OnFocusChangeListener` that assigned in `onCreateViewHolder(ViewGroup)` may be chained, user should never change `View.OnFocusChangeListener` after that.
final void	onViewAttachedToWindow(RecyclerView.ViewHolder holder) Called when a view created by this adapter has been attached to a window.
final void	onViewDetachedFromWindow(RecyclerView.ViewHolder holder) Called when a view created by this adapter has been detached from its window.
final void	onViewRecycled(RecyclerView.ViewHolder holder) Called when a view created by this adapter has been recycled.
void	setAdapter(ObjectAdapter adapter)
void	setAdapterListener(ItemBridgeAdapter.AdapterListener listener)
void	setPresenterMapper(ArrayList<Presenter> presenters)
void	setWrapper(ItemBridgeAdapter.Wrapper wrapper)

Protected Methods
void	onAddPresenter(Presenter presenter, int type) Called when presenter is added to Adapter.
void	onAttachedToWindow(ItemBridgeAdapter.ViewHolder viewHolder) Called when ViewHolder has been attached to window.
void	onBind(ItemBridgeAdapter.ViewHolder viewHolder) Called when ViewHolder has been bound to data.
void	onCreate(ItemBridgeAdapter.ViewHolder viewHolder) Called when ViewHolder is created.
void	onDetachedFromWindow(ItemBridgeAdapter.ViewHolder viewHolder) Called when ViewHolder has been detached from window.
void	onUnbind(ItemBridgeAdapter.ViewHolder viewHolder) Called when ViewHolder has been unbound from data.

[Expand]

Inherited Methods

From class android.support.v7.widget.RecyclerView.Adapter

final void	bindViewHolder(VH holder, int position) This method internally calls `onBindViewHolder(ViewHolder, int)` to update the `RecyclerView.ViewHolder` contents with the item at the given position and also sets up some private fields to be used by RecyclerView.
final VH	createViewHolder(ViewGroup parent, int viewType) This method calls `onCreateViewHolder(ViewGroup, int)` to create a new `RecyclerView.ViewHolder` and initializes some private fields to be used by RecyclerView.
abstract int	getItemCount() Returns the total number of items in the data set hold by the adapter.
long	getItemId(int position) Return the stable ID for the item at `position`.
int	getItemViewType(int position) Return the view type of the item at `position` for the purposes of view recycling.
final boolean	hasObservers() Returns true if one or more observers are attached to this adapter.
final boolean	hasStableIds() Returns true if this adapter publishes a unique `long` value that can act as a key for the item at a given position in the data set.
final void	notifyDataSetChanged() Notify any registered observers that the data set has changed.
final void	notifyItemChanged(int position) Notify any registered observers that the item at `position` has changed.
final void	notifyItemInserted(int position) Notify any registered observers that the item reflected at `position` has been newly inserted.
final void	notifyItemMoved(int fromPosition, int toPosition) Notify any registered observers that the item reflected at `fromPosition` has been moved to `toPosition`.
final void	notifyItemRangeChanged(int positionStart, int itemCount) Notify any registered observers that the `itemCount` items starting at position `positionStart` have changed.
final void	notifyItemRangeInserted(int positionStart, int itemCount) Notify any registered observers that the currently reflected `itemCount` items starting at `positionStart` have been newly inserted.
final void	notifyItemRangeRemoved(int positionStart, int itemCount) Notify any registered observers that the `itemCount` items previously located at `positionStart` have been removed from the data set.
final void	notifyItemRemoved(int position) Notify any registered observers that the item previously located at `position` has been removed from the data set.
void	onAttachedToRecyclerView(RecyclerView recyclerView) Called by RecyclerView when it starts observing this Adapter.
abstract void	onBindViewHolder(VH holder, int position) Called by RecyclerView to display the data at the specified position.
abstract VH	onCreateViewHolder(ViewGroup parent, int viewType) Called when RecyclerView needs a new `RecyclerView.ViewHolder` of the given type to represent an item.
void	onDetachedFromRecyclerView(RecyclerView recyclerView) Called by RecyclerView when it stops observing this Adapter.
boolean	onFailedToRecycleView(VH holder) Called by the RecyclerView if a ViewHolder created by this Adapter cannot be recycled due to its transient state.
void	onViewAttachedToWindow(VH holder) Called when a view created by this adapter has been attached to a window.
void	onViewDetachedFromWindow(VH holder) Called when a view created by this adapter has been detached from its window.
void	onViewRecycled(VH holder) Called when a view created by this adapter has been recycled.
void	registerAdapterDataObserver(RecyclerView.AdapterDataObserver observer) Register a new observer to listen for data changes.
void	setHasStableIds(boolean hasStableIds) Indicates whether each item in the data set can be represented with a unique identifier of type `Long`.
void	unregisterAdapterDataObserver(RecyclerView.AdapterDataObserver observer) Unregister an observer currently listening for data changes.

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.

Public Constructors

public ItemBridgeAdapter (ObjectAdapter adapter, PresenterSelector presenterSelector)

public ItemBridgeAdapter (ObjectAdapter adapter)

public ItemBridgeAdapter ()

Public Methods

public void clear ()

public int getItemCount ()

Returns the total number of items in the data set hold by the adapter.

Returns

The total number of items in this adapter.

public long getItemId (int position)

Return the stable ID for the item at position. If hasStableIds() would return false this method should return NO_ID. The default implementation of this method returns NO_ID.

Parameters

position	Adapter position to query

Returns

the stable ID of the item at position

public int getItemViewType (int position)

Return the view type of the item at position for the purposes of view recycling.

The default implementation of this method returns 0, making the assumption of a single view type for the adapter. Unlike ListView adapters, types need not be contiguous. Consider using id resources to uniquely identify item view types.

Parameters

position	position to query

Returns

integer value identifying the type of the view needed to represent the item at position. Type codes need not be contiguous.

public ArrayList<Presenter> getPresenterMapper ()

public ItemBridgeAdapter.Wrapper getWrapper ()

public final void onBindViewHolder (RecyclerView.ViewHolder holder, int position)

Called by RecyclerView to display the data at the specified position. This method should update the contents of the itemView to reflect the item at the given position.

Note that unlike ListView, RecyclerView will not call this method again if the position of the item changes in the data set unless the item itself is invalidated or the new position cannot be determined. For this reason, you should only use the position parameter while acquiring the related data item inside this method and should not keep a copy of it. If you need the position of an item later on (e.g. in a click listener), use getAdapterPosition() which will have the updated adapter position.

Parameters

holder	The ViewHolder which should be updated to represent the contents of the item at the given position in the data set.
position	The position of the item within the adapter's data set.

public final RecyclerView.ViewHolder onCreateViewHolder (ViewGroup parent, int viewType)

View.OnFocusChangeListener that assigned in onCreateViewHolder(ViewGroup) may be chained, user should never change View.OnFocusChangeListener after that.

Parameters

parent	The ViewGroup into which the new View will be added after it is bound to an adapter position.
viewType	The view type of the new View.

Returns

A new ViewHolder that holds a View of the given view type.

public final void onViewAttachedToWindow (RecyclerView.ViewHolder holder)

Called when a view created by this adapter has been attached to a window.

This can be used as a reasonable signal that the view is about to be seen by the user. If the adapter previously freed any resources in onViewDetachedFromWindow those resources should be restored here.

Parameters

holder	Holder of the view being attached

public final void onViewDetachedFromWindow (RecyclerView.ViewHolder holder)

Called when a view created by this adapter has been detached from its window.

Becoming detached from the window is not necessarily a permanent condition; the consumer of an Adapter's views may choose to cache views offscreen while they are not visible, attaching an detaching them as appropriate.

Parameters

holder	Holder of the view being detached

public final void onViewRecycled (RecyclerView.ViewHolder holder)

Called when a view created by this adapter has been recycled.

A view is recycled when a RecyclerView.LayoutManager decides that it no longer needs to be attached to its parent RecyclerView. This can be because it has fallen out of visibility or a set of cached views represented by views still attached to the parent RecyclerView. If an item view has large or expensive data bound to it such as large bitmaps, this may be a good place to release those resources.

RecyclerView calls this method right before clearing ViewHolder's internal data and sending it to RecycledViewPool. This way, if ViewHolder was holding valid information before being recycled, you can call getAdapterPosition() to get its adapter position.

Parameters

holder	The ViewHolder for the view being recycled

Results

Interfaces

Classes

ItemBridgeAdapter

Class Overview

Summary

Public Constructors

public ItemBridgeAdapter (ObjectAdapter adapter, PresenterSelector presenterSelector)

public ItemBridgeAdapter (ObjectAdapter adapter)

public ItemBridgeAdapter ()

Public Methods

public void clear ()

public int getItemCount ()

Returns

public long getItemId (int position)

Parameters

Returns

public int getItemViewType (int position)

Parameters

Returns

public ArrayList<Presenter> getPresenterMapper ()

public ItemBridgeAdapter.Wrapper getWrapper ()

public final void onBindViewHolder (RecyclerView.ViewHolder holder, int position)

Parameters

public final RecyclerView.ViewHolder onCreateViewHolder (ViewGroup parent, int viewType)

Parameters

Returns

public final void onViewAttachedToWindow (RecyclerView.ViewHolder holder)

Parameters

public final void onViewDetachedFromWindow (RecyclerView.ViewHolder holder)

Parameters

public final void onViewRecycled (RecyclerView.ViewHolder holder)

Parameters

public void setAdapter (ObjectAdapter adapter)

public void setAdapterListener (ItemBridgeAdapter.AdapterListener listener)

public void setPresenterMapper (ArrayList<Presenter> presenters)

public void setWrapper (ItemBridgeAdapter.Wrapper wrapper)

Protected Methods

protected void onAddPresenter (Presenter presenter, int type)

protected void onAttachedToWindow (ItemBridgeAdapter.ViewHolder viewHolder)

protected void onBind (ItemBridgeAdapter.ViewHolder viewHolder)

protected void onCreate (ItemBridgeAdapter.ViewHolder viewHolder)

protected void onDetachedFromWindow (ItemBridgeAdapter.ViewHolder viewHolder)

protected void onUnbind (ItemBridgeAdapter.ViewHolder viewHolder)