public class

HeaderViewListAdapter

extends Object
implements Filterable WrapperListAdapter
java.lang.Object
   ↳ android.widget.HeaderViewListAdapter

Class Overview

ListAdapter used when a ListView has header views. This ListAdapter wraps another one and also keeps track of the header views and their associated data objects.

This is intended as a base class; you will probably not need to use this class directly in your own code.

Summary

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Inherited Constants
From interface android.widget.Adapter
Public Constructors
HeaderViewListAdapter(ArrayList<ListView.FixedViewInfo> headerViewInfos, ArrayList<ListView.FixedViewInfo> footerViewInfos, ListAdapter adapter)
Public Methods
boolean areAllItemsEnabled()
Are all items in this ListAdapter enabled? If yes it means all items are selectable and clickable.
int getCount()
How many items are in the data set represented by this Adapter.
Filter getFilter()

Returns a filter that can be used to constrain data with a filtering pattern.

int getFootersCount()
int getHeadersCount()
Object getItem(int position)
Get the data item associated with the specified position in the data set.
long getItemId(int position)
Get the row id associated with the specified position in the list.
int getItemViewType(int position)
Get the type of View that will be created by getView(int, View, ViewGroup) for the specified item.
View getView(int position, View convertView, ViewGroup parent)
Get a View that displays the data at the specified position in the data set.
int getViewTypeCount()

Returns the number of types of Views that will be created by getView(int, View, ViewGroup).

ListAdapter getWrappedAdapter()
Returns the adapter wrapped by this list adapter.
boolean hasStableIds()
Indicated whether the item ids are stable across changes to the underlying data.
boolean isEmpty()
boolean isEnabled(int position)
Returns true if the item at the specified position is not a separator.
void registerDataSetObserver(DataSetObserver observer)
Register an observer that is called when changes happen to the data used by this adapter.
boolean removeFooter(View v)
boolean removeHeader(View v)
void unregisterDataSetObserver(DataSetObserver observer)
Unregister an observer that has previously been registered with this adapter via registerDataSetObserver(DataSetObserver).
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Inherited Methods
From class java.lang.Object
From interface android.widget.Adapter
From interface android.widget.Filterable
From interface android.widget.ListAdapter
From interface android.widget.WrapperListAdapter

Public Constructors

public HeaderViewListAdapter (ArrayList<ListView.FixedViewInfo> headerViewInfos, ArrayList<ListView.FixedViewInfo> footerViewInfos, ListAdapter adapter)

Since: API Level 1

Public Methods

public boolean areAllItemsEnabled ()

Since: API Level 1

Are all items in this ListAdapter enabled? If yes it means all items are selectable and clickable.

Returns
  • True if all items are enabled

public int getCount ()

Since: API Level 1

How many items are in the data set represented by this Adapter.

Returns
  • Count of items.

public Filter getFilter ()

Since: API Level 1

Returns a filter that can be used to constrain data with a filtering pattern.

This method is usually implemented by Adapter classes.

Returns
  • a filter used to constrain data

public int getFootersCount ()

Since: API Level 1

public int getHeadersCount ()

Since: API Level 1

public Object getItem (int position)

Since: API Level 1

Get the data item associated with the specified position in the data set.

Parameters
position Position of the item whose data we want within the adapter's data set.
Returns
  • The data at the specified position.

public long getItemId (int position)

Since: API Level 1

Get the row id associated with the specified position in the list.

Parameters
position The position of the item within the adapter's data set whose row id we want.
Returns
  • The id of the item at the specified position.

public int getItemViewType (int position)

Since: API Level 1

Get the type of View that will be created by getView(int, View, ViewGroup) for the specified item.

Parameters
position The position of the item within the adapter's data set whose view type we want.
Returns

public View getView (int position, View convertView, ViewGroup parent)

Since: API Level 1

Get a View that displays the data at the specified position in the data set. You can either create a View manually or inflate it from an XML layout file. When the View is inflated, the parent View (GridView, ListView...) will apply default layout parameters unless you use inflate(int, android.view.ViewGroup, boolean) to specify a root view and to prevent attachment to the root.

Parameters
position The position of the item within the adapter's data set of the item whose view we want.
convertView The old view to reuse, if possible. Note: You should check that this view is non-null and of an appropriate type before using. If it is not possible to convert this view to display the correct data, this method can create a new view.
parent The parent that this view will eventually be attached to
Returns
  • A View corresponding to the data at the specified position.

public int getViewTypeCount ()

Since: API Level 1

Returns the number of types of Views that will be created by getView(int, View, ViewGroup). Each type represents a set of views that can be converted in getView(int, View, ViewGroup). If the adapter always returns the same type of View for all items, this method should return 1.

This method will only be called when when the adapter is set on the the AdapterView.

Returns
  • The number of types of Views that will be created by this adapter

public ListAdapter getWrappedAdapter ()

Since: API Level 1

Returns the adapter wrapped by this list adapter.

Returns

public boolean hasStableIds ()

Since: API Level 1

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

Returns
  • True if the same id always refers to the same object.

public boolean isEmpty ()

Since: API Level 1

public boolean isEnabled (int position)

Since: API Level 1

Returns true if the item at the specified position is not a separator. (A separator is a non-selectable, non-clickable item).

Parameters
position Index of the item
Returns
  • True if the item is not a separator

public void registerDataSetObserver (DataSetObserver observer)

Since: API Level 1

Register an observer that is called when changes happen to the data used by this adapter.

Parameters
observer the object that gets notified when the data set changes.

public boolean removeFooter (View v)

Since: API Level 1

public boolean removeHeader (View v)

Since: API Level 1

public void unregisterDataSetObserver (DataSetObserver observer)

Since: API Level 1

Unregister an observer that has previously been registered with this adapter via registerDataSetObserver(DataSetObserver).

Parameters
observer the object to unregister.