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Added in API level 1

HeaderViewListAdapter

public class HeaderViewListAdapter
extends Object implements WrapperListAdapter, Filterable

java.lang.Object
   ↳ android.widget.HeaderViewListAdapter


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

Inherited constants

From interface android.widget.Adapter

Public constructors

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

Public methods

boolean areAllItemsEnabled()

Indicates whether all the items in this adapter are enabled.

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()

Indicates 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).

Inherited methods

From class java.lang.Object
From interface android.widget.WrapperListAdapter
From interface android.widget.Filterable
From interface android.widget.ListAdapter
From interface android.widget.Adapter

Public constructors

HeaderViewListAdapter

Added in API level 1
HeaderViewListAdapter (ArrayList<ListView.FixedViewInfo> headerViewInfos, 
                ArrayList<ListView.FixedViewInfo> footerViewInfos, 
                ListAdapter adapter)

Parameters
headerViewInfos ArrayList
footerViewInfos ArrayList
adapter ListAdapter

Public methods

areAllItemsEnabled

Added in API level 1
boolean areAllItemsEnabled ()

Indicates whether all the items in this adapter are enabled. If the value returned by this method changes over time, there is no guarantee it will take effect. If true, it means all items are selectable and clickable (there is no separator.)

Returns
boolean True if all items are enabled, false otherwise.

getCount

Added in API level 1
int getCount ()

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

Returns
int Count of items.

getFilter

Added in API level 1
Filter getFilter ()

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

This method is usually implemented by Adapter classes.

Returns
Filter a filter used to constrain data

getFootersCount

Added in API level 1
int getFootersCount ()

Returns
int

getHeadersCount

Added in API level 1
int getHeadersCount ()

Returns
int

getItem

Added in API level 1
Object getItem (int position)

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

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

getItemId

Added in API level 1
long getItemId (int position)

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

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

getItemViewType

Added in API level 1
int getItemViewType (int position)

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

Parameters
position int: The position of the item within the adapter's data set whose view type we want.
Returns
int An integer representing the type of View. Two views should share the same type if one can be converted to the other in getView(int, View, ViewGroup). Note: Integers must be in the range 0 to getViewTypeCount() - 1. IGNORE_ITEM_VIEW_TYPE can also be returned.

getView

Added in API level 1
View getView (int position, 
                View convertView, 
                ViewGroup parent)

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 int: The position of the item within the adapter's data set of the item whose view we want.
convertView View: 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. Heterogeneous lists can specify their number of view types, so that this View is always of the right type (see getViewTypeCount() and getItemViewType(int)).
parent ViewGroup: The parent that this view will eventually be attached to
Returns
View A View corresponding to the data at the specified position.

getViewTypeCount

Added in API level 1
int getViewTypeCount ()

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

getWrappedAdapter

Added in API level 1
ListAdapter getWrappedAdapter ()

Returns the adapter wrapped by this list adapter.

Returns
ListAdapter The ListAdapter wrapped by this adapter.

hasStableIds

Added in API level 1
boolean hasStableIds ()

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

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

isEmpty

Added in API level 1
boolean isEmpty ()

Returns
boolean

isEnabled

Added in API level 1
boolean isEnabled (int position)

Returns true if the item at the specified position is not a separator. (A separator is a non-selectable, non-clickable item). The result is unspecified if position is invalid. An ArrayIndexOutOfBoundsException should be thrown in that case for fast failure.

Parameters
position int: Index of the item
Returns
boolean True if the item is not a separator

registerDataSetObserver

Added in API level 1
void registerDataSetObserver (DataSetObserver observer)

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

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

removeFooter

Added in API level 1
boolean removeFooter (View v)

Parameters
v View
Returns
boolean

removeHeader

Added in API level 1
boolean removeHeader (View v)

Parameters
v View
Returns
boolean

unregisterDataSetObserver

Added in API level 1
void unregisterDataSetObserver (DataSetObserver observer)

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

Parameters
observer DataSetObserver: the object to unregister.
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