com.yanzhenjie.recyclerview

Class ExpandableAdapter<VH extends ExpandableAdapter.ViewHolder>

java.lang.Object

<any>

com.yanzhenjie.recyclerview.ExpandableAdapter<VH>

public abstract class ExpandableAdapter<VH extends ExpandableAdapter.ViewHolder>
extends <any>

Created by Zhenjie Yan on 1/28/19.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ExpandableAdapter.ViewHolder

Constructor Summary

Constructors

Constructor and Description
ExpandableAdapter()

Method Summary

Modifier and Type	Method and Description
abstract void	bindChildHolder(VH holder, int parentPosition, int position) Called by RecyclerView to display the data at the specified position.
void	bindChildHolder(VH holder, int parentPosition, int position, java.util.List<java.lang.Object> payloads)
abstract void	bindParentHolder(VH holder, int position) Called by RecyclerView to display the data at the specified position.
void	bindParentHolder(VH holder, int position, java.util.List<java.lang.Object> payloads)
abstract int	childItemCount(int parentPosition) Get the total number of child items under parent.
int	childItemPosition(int childAdapterPosition) Get the position of the child item from the adapter position.
int	childItemViewType(int parentPosition, int childPosition) Get the view type of the child item.
void	collapseParent(int parentPosition) Collapse parent.
abstract VH	createChildHolder(android.view.ViewGroup root, int viewType) Called when RecyclerView needs a new ExpandableAdapter.ViewHolder of the given type to represent an child item.
abstract VH	createParentHolder(android.view.ViewGroup root, int viewType) Called when RecyclerView needs a new ExpandableAdapter.ViewHolder of the given type to represent an parent item.
void	expandParent(int parentPosition) Expand parent.
int	getItemCount()
int	getItemViewType(int position)
boolean	isExpanded(int parentPosition) Parent item is expanded.
boolean	isParentItem(int adapterPosition) Item is a parent item.
void	notifyChildChanged(int parentPosition, int childPosition) Notify any registered observers that the item at parentPosition, childPosition has changed.
void	notifyChildInserted(int parentPosition, int childPosition) Notify any registered observers that the item reflected at parentPosition, childPosition has been newly inserted.
void	notifyChildRemoved(int parentPosition, int childPosition) Notify any registered observers that the item previously located at parentPosition, childPosition has been removed from the data set.
void	notifyParentChanged(int parentPosition) Notify any registered observers that the item at parentPosition has changed.
void	notifyParentInserted(int parentPosition) Notify any registered observers that the item reflected at parentPosition has been newly inserted.
void	notifyParentRemoved(int parentPosition) Notify any registered observers that the item previously located at parentPosition has been removed from the data set.
void	onAttachedToRecyclerView(RecyclerView recyclerView)
void	onBindViewHolder(VH holder, int position) Deprecated.
void	onBindViewHolder(VH holder, int position, java.util.List<java.lang.Object> payloads)
VH	onCreateViewHolder(android.view.ViewGroup root, int viewType)
void	onViewAttachedToWindow(VH holder)
abstract int	parentItemCount() Get the total number of items in the parent.
int	parentItemPosition(int adapterPosition) Get the position of the parent item from the adapter position.
int	parentItemViewType(int parentPosition) Get the view type of the parent item.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExpandableAdapter

public ExpandableAdapter()

Method Detail

isExpanded

public final boolean isExpanded(int parentPosition)

Parent item is expanded.

Parameters:

parentPosition - position of parent item.

Returns:

true, otherwise is false.

expandParent

public final void expandParent(int parentPosition)

Expand parent.

Parameters:

parentPosition - position of parent item.

collapseParent

public final void collapseParent(int parentPosition)

Collapse parent.

Parameters:

parentPosition - position of parent item.

notifyParentChanged

public final void notifyParentChanged(int parentPosition)

Notify any registered observers that the item at parentPosition has changed.

Parameters:

parentPosition - position of parent item.

notifyParentInserted

public final void notifyParentInserted(int parentPosition)

Notify any registered observers that the item reflected at parentPosition has been newly inserted.

Parameters:

parentPosition - position of parent item.

notifyParentRemoved

public final void notifyParentRemoved(int parentPosition)

Notify any registered observers that the item previously located at parentPosition has been removed from the data set.

Parameters:

parentPosition - position of parent item.

notifyChildChanged

public final void notifyChildChanged(int parentPosition,
                                     int childPosition)

Notify any registered observers that the item at parentPosition, childPosition has changed.

Parameters:

parentPosition - position of parent item.

childPosition - positoin of child item.

notifyChildInserted

public final void notifyChildInserted(int parentPosition,
                                      int childPosition)

Notify any registered observers that the item reflected at parentPosition, childPosition has been newly inserted.

Parameters:

parentPosition - position of parent item.

childPosition - positoin of child item.

notifyChildRemoved

public final void notifyChildRemoved(int parentPosition,
                                     int childPosition)

Notify any registered observers that the item previously located at parentPosition, childPosition has been removed from the data set.

Parameters:

parentPosition - position of parent item.

childPosition - positoin of child item.

getItemCount

public final int getItemCount()

parentItemCount

public abstract int parentItemCount()

Get the total number of items in the parent.

childItemCount

public abstract int childItemCount(int parentPosition)

Get the total number of child items under parent.

Parameters:

parentPosition - position of parent item.

getItemViewType

public final int getItemViewType(int position)

parentItemViewType

public int parentItemViewType(int parentPosition)

Get the view type of the parent item.

Parameters:

parentPosition - position of parent item.

childItemViewType

public int childItemViewType(int parentPosition,
                             int childPosition)

Get the view type of the child item.

Parameters:

parentPosition - position of parent item.

childPosition - position of child item.

isParentItem

public final boolean isParentItem(int adapterPosition)

Item is a parent item.

Parameters:

adapterPosition - adapter position.

Returns:

true, otherwise is false.

parentItemPosition

public final int parentItemPosition(int adapterPosition)

Get the position of the parent item from the adapter position.

Parameters:

adapterPosition - adapter position of item.

childItemPosition

public final int childItemPosition(int childAdapterPosition)

Get the position of the child item from the adapter position.

Parameters:

childAdapterPosition - adapter position of child item.

onCreateViewHolder

public final VH onCreateViewHolder(android.view.ViewGroup root,
                                   int viewType)

createParentHolder

public abstract VH createParentHolder(android.view.ViewGroup root,
                                      int viewType)

Called when RecyclerView needs a new ExpandableAdapter.ViewHolder of the given type to represent an parent item.

Parameters:

root - 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 ExpandableAdapter.ViewHolder that holds a View of the given view type.

createChildHolder

public abstract VH createChildHolder(android.view.ViewGroup root,
                                     int viewType)

Called when RecyclerView needs a new ExpandableAdapter.ViewHolder of the given type to represent an child item.

Parameters:

root - 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 ExpandableAdapter.ViewHolder that holds a View of the given view type.

onBindViewHolder

public final void onBindViewHolder(VH holder,
                                   int position,
                                   java.util.List<java.lang.Object> payloads)

bindParentHolder

public void bindParentHolder(VH holder,
                             int position,
                             java.util.List<java.lang.Object> payloads)

bindChildHolder

public void bindChildHolder(VH holder,
                            int parentPosition,
                            int position,
                            java.util.List<java.lang.Object> payloads)

bindParentHolder

public abstract void bindParentHolder(VH holder,
                                      int position)

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

Parameters:

holder - parent holder.

position - position of parent item.

bindChildHolder

public abstract void bindChildHolder(VH holder,
                                     int parentPosition,
                                     int position)

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

Parameters:

holder - child holder.

parentPosition - position of parent item.

position - position of child position.

onBindViewHolder

@Deprecated
public final void onBindViewHolder(VH holder,
                                               int position)

Deprecated.

onAttachedToRecyclerView

public void onAttachedToRecyclerView(RecyclerView recyclerView)

onViewAttachedToWindow

public void onViewAttachedToWindow(VH holder)