public
class
SparseArrayObjectAdapter
extends ObjectAdapter
| java.lang.Object | ||
| ↳ | android.support.v17.leanback.widget.ObjectAdapter | |
| ↳ | android.support.v17.leanback.widget.SparseArrayObjectAdapter | |
An ObjectAdapter implemented with a SparseArray.
This class maintains an array of objects where each object is associated
with an integer key which determines its order relative to other objects.
Inherited constants |
|---|
 From
class
android.support.v17.leanback.widget.ObjectAdapter
|
Public constructors | |
|---|---|
SparseArrayObjectAdapter(PresenterSelector presenterSelector)
Constructs an adapter with the given |
|
SparseArrayObjectAdapter(Presenter presenter)
Constructs an adapter with the given |
|
SparseArrayObjectAdapter()
Constructs an adapter. |
|
Public methods | |
|---|---|
void
|
clear(int key)
Clears the given key and associated item from the adapter. |
void
|
clear()
Removes all items from this adapter, leaving it empty. |
Object
|
get(int position)
Returns the item for the given position. |
int
|
indexOf(Object item)
Returns the index for the given item in the adapter. |
int
|
indexOf(int key)
Returns the index for the given key in the adapter. |
Object
|
lookup(int key)
Returns the object for the given key, or null if no mapping for that key exists. |
void
|
notifyArrayItemRangeChanged(int positionStart, int itemCount)
Notify that the content of a range of items changed. |
void
|
set(int key, Object item)
Sets the item for the given key. |
int
|
size()
Returns the number of items in the adapter. |
Inherited methods | |
|---|---|
From
class
android.support.v17.leanback.widget.ObjectAdapter
| |
From
class
java.lang.Object
| |
SparseArrayObjectAdapter (PresenterSelector presenterSelector)
Constructs an adapter with the given PresenterSelector.
| Parameters | |
|---|---|
presenterSelector |
PresenterSelector
|
SparseArrayObjectAdapter (Presenter presenter)
Constructs an adapter with the given Presenter.
| Parameters | |
|---|---|
presenter |
Presenter
|
SparseArrayObjectAdapter ()
Constructs an adapter.
void clear (int key)
Clears the given key and associated item from the adapter.
| Parameters | |
|---|---|
key |
int:
The key to be cleared.
|
void clear ()
Removes all items from this adapter, leaving it empty.
Object get (int position)
Returns the item for the given position.
| Parameters | |
|---|---|
position |
int
|
| Returns | |
|---|---|
Object |
|
int indexOf (Object item)
Returns the index for the given item in the adapter.
| Parameters | |
|---|---|
item |
Object:
The item to find in the array. |
| Returns | |
|---|---|
int |
Index of the item, or a negative value if not found. |
int indexOf (int key)
Returns the index for the given key in the adapter.
| Parameters | |
|---|---|
key |
int:
The key to find in the array. |
| Returns | |
|---|---|
int |
Index of the item, or a negative value if not found. |
Object lookup (int key)
Returns the object for the given key, or null if no mapping for that key exists.
| Parameters | |
|---|---|
key |
int
|
| Returns | |
|---|---|
Object |
|
Developers
void notifyArrayItemRangeChanged (int positionStart,
int itemCount)
Notify that the content of a range of items changed. Note that this is not same as items being added or removed.
| Parameters | |
|---|---|
positionStart |
int:
The position of first item that has changed. |
itemCount |
int:
The count of how many items have changed.
|
void set (int key,
Object item)
Sets the item for the given key.
| Parameters | |
|---|---|
key |
int:
The key associated with the item. |
item |
Object:
The item associated with the key.
|
int size ()
Returns the number of items in the adapter.
| Returns | |
|---|---|
int |
|