public class HeaderViewListAdapter extends Object implements WrapperListAdapter, Filterable
This is intended as a base class; you will probably not need to use this class directly in your own code.
IGNORE_ITEM_VIEW_TYPE, NO_SELECTION
Constructor and Description |
---|
HeaderViewListAdapter(ArrayList<ListView.FixedViewInfo> headerViewInfos,
ArrayList<ListView.FixedViewInfo> footerViewInfos,
ListAdapter adapter) |
Modifier and Type | Method and Description |
---|---|
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
Adapter.getView(int, android.view.View, android.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
Adapter.getView(int, android.view.View, android.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
Adapter.registerDataSetObserver(android.database.DataSetObserver) . |
public HeaderViewListAdapter(ArrayList<ListView.FixedViewInfo> headerViewInfos, ArrayList<ListView.FixedViewInfo> footerViewInfos, ListAdapter adapter)
public int getHeadersCount()
public int getFootersCount()
public boolean isEmpty()
isEmpty
in interface Adapter
public boolean removeHeader(View v)
public boolean removeFooter(View v)
public int getCount()
Adapter
public boolean areAllItemsEnabled()
ListAdapter
areAllItemsEnabled
in interface ListAdapter
ListAdapter.isEnabled(int)
public boolean isEnabled(int position)
ListAdapter
ArrayIndexOutOfBoundsException
should be thrown in that case for fast failure.isEnabled
in interface ListAdapter
position
- Index of the itemListAdapter.areAllItemsEnabled()
public Object getItem(int position)
Adapter
public long getItemId(int position)
Adapter
public boolean hasStableIds()
Adapter
hasStableIds
in interface Adapter
public View getView(int position, View convertView, ViewGroup parent)
Adapter
LayoutInflater.inflate(int, android.view.ViewGroup, boolean)
to specify a root view and to prevent attachment to the root.getView
in interface Adapter
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.
Heterogeneous lists can specify their number of view types, so that this View is
always of the right type (see Adapter.getViewTypeCount()
and
Adapter.getItemViewType(int)
).parent
- The parent that this view will eventually be attached topublic int getItemViewType(int position)
Adapter
Adapter.getView(int, android.view.View, android.view.ViewGroup)
for the specified item.getItemViewType
in interface Adapter
position
- The position of the item within the adapter's data set whose view type we
want.Adapter.getView(int, android.view.View, android.view.ViewGroup)
. Note: Integers must be in the
range 0 to Adapter.getViewTypeCount()
- 1. Adapter.IGNORE_ITEM_VIEW_TYPE
can
also be returned.Adapter.IGNORE_ITEM_VIEW_TYPE
public int getViewTypeCount()
Adapter
Returns the number of types of Views that will be created by
Adapter.getView(int, android.view.View, android.view.ViewGroup)
. Each type represents a set of views that can be
converted in Adapter.getView(int, android.view.View, android.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 the adapter is set on the AdapterView
.
getViewTypeCount
in interface Adapter
public void registerDataSetObserver(DataSetObserver observer)
Adapter
registerDataSetObserver
in interface Adapter
observer
- the object that gets notified when the data set changes.public void unregisterDataSetObserver(DataSetObserver observer)
Adapter
Adapter.registerDataSetObserver(android.database.DataSetObserver)
.unregisterDataSetObserver
in interface Adapter
observer
- the object to unregister.public Filter getFilter()
Filterable
Returns a filter that can be used to constrain data with a filtering pattern.
This method is usually implemented by Adapter
classes.
getFilter
in interface Filterable
public ListAdapter getWrappedAdapter()
WrapperListAdapter
getWrappedAdapter
in interface WrapperListAdapter
ListAdapter
wrapped by this adapter.