belongs to Maven artifact com.android.support:leanback-v17:28.0.0-alpha1
CursorObjectAdapter
public
class
CursorObjectAdapter
extends ObjectAdapter
java.lang.Object | ||
↳ | android.support.v17.leanback.widget.ObjectAdapter | |
↳ | android.support.v17.leanback.widget.CursorObjectAdapter |
An ObjectAdapter
implemented with a Cursor
.
Summary
Inherited constants |
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android.support.v17.leanback.widget.ObjectAdapter
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Public constructors | |
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CursorObjectAdapter(PresenterSelector presenterSelector)
Constructs an adapter with the given |
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CursorObjectAdapter(Presenter presenter)
Constructs an adapter that uses the given |
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CursorObjectAdapter()
Constructs an adapter. |
Public methods | |
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void
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changeCursor(Cursor cursor)
Changes the underlying cursor to a new cursor. |
void
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close()
Closes this adapter, closing the backing |
Object
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get(int index)
Returns the item for the given position. |
final
Cursor
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getCursor()
Returns the |
final
CursorMapper
|
getMapper()
Returns the |
boolean
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isClosed()
Returns true if the adapter, and hence the backing |
boolean
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isImmediateNotifySupported()
Returns true if the adapter pairs each underlying data change with a call to notify and false otherwise. |
final
void
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setMapper(CursorMapper mapper)
Sets the |
int
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size()
Returns the number of items in the adapter. |
Cursor
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swapCursor(Cursor cursor)
Swap in a new Cursor, returning the old Cursor. |
Protected methods | |
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final
void
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invalidateCache(int index)
Removes an item from the cache. |
final
void
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invalidateCache(int index, int count)
Removes |
void
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onCursorChanged()
Called whenever the cursor changes. |
void
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onMapperChanged()
Called when |
Inherited methods | |
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android.support.v17.leanback.widget.ObjectAdapter
| |
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java.lang.Object
|
Public constructors
CursorObjectAdapter
CursorObjectAdapter (PresenterSelector presenterSelector)
Constructs an adapter with the given PresenterSelector
.
Parameters | |
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presenterSelector |
PresenterSelector |
CursorObjectAdapter
CursorObjectAdapter (Presenter presenter)
Constructs an adapter that uses the given Presenter
for all items.
Parameters | |
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presenter |
Presenter |
Public methods
changeCursor
void changeCursor (Cursor cursor)
Changes the underlying cursor to a new cursor. If there is an existing cursor it will be closed if it is different than the new cursor.
Parameters | |
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cursor |
Cursor : The new cursor to be used.
|
close
void close ()
Closes this adapter, closing the backing Cursor
as well.
get
Object get (int index)
Returns the item for the given position.
Parameters | |
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index |
int |
Returns | |
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Object |
getCursor
Cursor getCursor ()
Returns the Cursor
backing the adapter.
Returns | |
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Cursor |
getMapper
CursorMapper getMapper ()
Returns the CursorMapper
used to convert Cursor
rows into
Objects.
Returns | |
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CursorMapper |
isClosed
boolean isClosed ()
Returns true if the adapter, and hence the backing Cursor
, is closed; false
otherwise.
Returns | |
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boolean |
isImmediateNotifySupported
boolean isImmediateNotifySupported ()
Returns true if the adapter pairs each underlying data change with a call to notify and false otherwise.
Returns | |
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boolean |
setMapper
void setMapper (CursorMapper mapper)
Sets the CursorMapper
used to convert Cursor
rows into
Objects.
Parameters | |
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mapper |
CursorMapper |
swapCursor
Cursor swapCursor (Cursor cursor)
Swap in a new Cursor, returning the old Cursor. Unlike changeCursor(Cursor), the returned old Cursor is not closed.
Parameters | |
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cursor |
Cursor : The new cursor to be used.
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Returns | |
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Cursor |
Protected methods
invalidateCache
void invalidateCache (int index)
Removes an item from the cache. This will force the item to be re-read
from the data source the next time get(int)
is called.
Parameters | |
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index |
int |
invalidateCache
void invalidateCache (int index, int count)
Removes count
items starting at index
.
Parameters | |
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index |
int |
count |
int |