com.thoughtbot.expandablerecyclerview

Class MultiTypeExpandableRecyclerViewAdapter<GVH extends GroupViewHolder,CVH extends ChildViewHolder>

java.lang.Object

RecyclerView.Adapter

com.thoughtbot.expandablerecyclerview.ExpandableRecyclerViewAdapter<GVH,CVH>

com.thoughtbot.expandablerecyclerview.MultiTypeExpandableRecyclerViewAdapter<GVH,CVH>

All Implemented Interfaces:

ExpandCollapseListener, OnGroupClickListener

public abstract class MultiTypeExpandableRecyclerViewAdapter<GVH extends GroupViewHolder,CVH extends ChildViewHolder>
extends ExpandableRecyclerViewAdapter<GVH,CVH>

Field Summary

Fields inherited from class com.thoughtbot.expandablerecyclerview.ExpandableRecyclerViewAdapter

expandableList

Constructor Summary

Constructors

Constructor and Description
MultiTypeExpandableRecyclerViewAdapter(java.util.List<? extends ExpandableGroup> groups)

Method Summary

Modifier and Type	Method and Description
int	getChildViewType(int position, ExpandableGroup group, int childIndex) Used to allow subclasses to have multiple view types for children
int	getGroupViewType(int position, ExpandableGroup group) Used to allow subclasses to have multiple view types for groups
int	getItemViewType(int position) Gets the view type of the item at the given position.
boolean	isChild(int viewType)
boolean	isGroup(int viewType)
void	onBindViewHolder(ViewHolder holder, int position) Implementation of Adapter.onBindViewHolder(RecyclerView.ViewHolder, int) that determines if the list item is a group or a child and calls through to the appropriate implementation of either ExpandableRecyclerViewAdapter.onBindGroupViewHolder(GroupViewHolder, int, ExpandableGroup) or ExpandableRecyclerViewAdapter.onBindChildViewHolder(ChildViewHolder, int, ExpandableGroup, int).
ViewHolder	onCreateViewHolder(android.view.ViewGroup parent, int viewType) Implementation of RecyclerView.Adapter.onCreateViewHolder(ViewGroup, int) that determines if the list item is a group or a child and calls through to the appropriate implementation of either ExpandableRecyclerViewAdapter.onCreateGroupViewHolder(ViewGroup, int) or ExpandableRecyclerViewAdapter.onCreateChildViewHolder(ViewGroup, int)}.

Methods inherited from class com.thoughtbot.expandablerecyclerview.ExpandableRecyclerViewAdapter

getGroups, getItemCount, isGroupExpanded, isGroupExpanded, onBindChildViewHolder, onBindGroupViewHolder, onCreateChildViewHolder, onCreateGroupViewHolder, onGroupClick, onGroupCollapsed, onGroupExpanded, onRestoreInstanceState, onSaveInstanceState, setOnGroupClickListener, setOnGroupExpandCollapseListener, toggleGroup, toggleGroup

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiTypeExpandableRecyclerViewAdapter

public MultiTypeExpandableRecyclerViewAdapter(java.util.List<? extends ExpandableGroup> groups)

Method Detail

onCreateViewHolder

public ViewHolder onCreateViewHolder(android.view.ViewGroup parent,
                                     int viewType)

Implementation of RecyclerView.Adapter.onCreateViewHolder(ViewGroup, int) that determines if the list item is a group or a child and calls through to the appropriate implementation of either ExpandableRecyclerViewAdapter.onCreateGroupViewHolder(ViewGroup, int) or ExpandableRecyclerViewAdapter.onCreateChildViewHolder(ViewGroup, int)}.

Overrides:

onCreateViewHolder in class ExpandableRecyclerViewAdapter<GVH extends GroupViewHolder,CVH extends ChildViewHolder>

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 android.view.View.

Returns:

Either a new GroupViewHolder or a new ChildViewHolder that holds a android.view.View of the given view type.

onBindViewHolder

public void onBindViewHolder(ViewHolder holder,
                             int position)

Implementation of Adapter.onBindViewHolder(RecyclerView.ViewHolder, int) that determines if the list item is a group or a child and calls through to the appropriate implementation of either ExpandableRecyclerViewAdapter.onBindGroupViewHolder(GroupViewHolder, int, ExpandableGroup) or ExpandableRecyclerViewAdapter.onBindChildViewHolder(ChildViewHolder, int, ExpandableGroup, int).

Overrides:

onBindViewHolder in class ExpandableRecyclerViewAdapter<GVH extends GroupViewHolder,CVH extends ChildViewHolder>

Parameters:

holder - Either the GroupViewHolder or the ChildViewHolder to bind data to

position - The flat position (or index in the list of ExpandableList.getVisibleItemCount() in the list at which to bind

getItemViewType

public int getItemViewType(int position)

Gets the view type of the item at the given position.

Overrides:

getItemViewType in class ExpandableRecyclerViewAdapter<GVH extends GroupViewHolder,CVH extends ChildViewHolder>

Parameters:

position - The flat position in the list to get the view type of

Returns:

if the flat position corresponds to a child item, this will return the value returned by getChildViewType. if the flat position refers to a group item this will return the value returned by getGroupViewType

getChildViewType

public int getChildViewType(int position,
                            ExpandableGroup group,
                            int childIndex)

Used to allow subclasses to have multiple view types for children

Parameters:

position - the flat position in the list

group - the group that this child belongs to

childIndex - the index of the child within the group

Returns:

any int representing the viewType for a child within the group *EXCEPT* for ExpandableListPosition.CHILD and ExpandableListPosition.GROUP. If you do *not* override this method, the default viewType for a group is ExpandableListPosition.CHILD

A subclass may use any number *EXCEPT* for ExpandableListPosition.CHILD and ExpandableListPosition.GROUP as those are already being used by the adapter

getGroupViewType

public int getGroupViewType(int position,
                            ExpandableGroup group)

Used to allow subclasses to have multiple view types for groups

Parameters:

position - the flat position in the list

group - the group at this position

Returns:

any int representing the viewType for this group *EXCEPT* for ExpandableListPosition.CHILD and ExpandableListPosition.GROUP. If you do not override this method, the default viewType for a group is ExpandableListPosition.GROUP

A subclass may use any number *EXCEPT* for ExpandableListPosition.CHILD and ExpandableListPosition.GROUP as those are already being used by the adapter

isGroup

public boolean isGroup(int viewType)

Parameters:

viewType - the int corresponding to the viewType of a ExpandableGroup

Returns:

if a subclasses has *NOT* overridden getGroupViewType than the viewType for the group is defaulted to ExpandableListPosition.GROUP

isChild

public boolean isChild(int viewType)

Parameters:

viewType - the int corresponding to the viewType of a child of a ExpandableGroup

Returns:

if a subclasses has *NOT* overridden getChildViewType than the viewType for the child is defaulted to ExpandableListPosition.CHILD