Summary: Nested Classes | Inherited Constants | Ctors | Methods | Protected Methods | Inherited Methods

RowsFragment

Kotlin |Java

public class RowsFragment
extends Fragment implements BrowseFragment.MainFragmentRowsAdapterProvider, BrowseFragment.MainFragmentAdapterProvider

java.lang.Object
↳	android.app.Fragment
	↳	androidx.leanback.app.RowsFragment

---

This class is deprecated.
use RowsSupportFragment

An ordered set of rows of leanback widgets.

A RowsFragment renders the elements of its ObjectAdapter as a set of rows in a vertical list. The Adapter's PresenterSelector must maintain subclasses of RowPresenter.

Summary

Nested classes
class	RowsFragment.MainFragmentAdapter
class	RowsFragment.MainFragmentRowsAdapter This class is deprecated. use RowsSupportFragment

Inherited constants
From interface android.content.ComponentCallbacks2 int TRIM_MEMORY_BACKGROUND int TRIM_MEMORY_COMPLETE int TRIM_MEMORY_MODERATE int TRIM_MEMORY_RUNNING_CRITICAL int TRIM_MEMORY_RUNNING_LOW int TRIM_MEMORY_RUNNING_MODERATE int TRIM_MEMORY_UI_HIDDEN

Public constructors
RowsFragment()

Public methods
void	enableRowScaling(boolean enable) This method is deprecated. use BrowseFragment.enableRowScaling(boolean) instead.
RowPresenter.ViewHolder	findRowViewHolderByPosition(int position) Find row ViewHolder by position in adapter.
final ObjectAdapter	getAdapter() Returns the Adapter that represents list of rows.
final ItemBridgeAdapter	getBridgeAdapter() Returns the RecyclerView.Adapter that wraps getAdapter().
MainFragmentAdapter	getMainFragmentAdapter() Returns an instance of BrowseFragment.MainFragmentAdapter that BrowseFragment would use to communicate with the target fragment.
MainFragmentRowsAdapter	getMainFragmentRowsAdapter() Returns an instance of BrowseFragment.MainFragmentRowsAdapter that BrowseFragment would use to communicate with the target fragment.
BaseOnItemViewClickedListener	getOnItemViewClickedListener() Returns the item clicked listener.
BaseOnItemViewSelectedListener	getOnItemViewSelectedListener() Returns an item selection listener.
final PresenterSelector	getPresenterSelector() Get the presenter selector used to create and bind views.
RowPresenter.ViewHolder	getRowViewHolder(int position) Get row ViewHolder at adapter position.
int	getSelectedPosition() Gets position of currently selected row.
final VerticalGridView	getVerticalGridView()
boolean	isScrolling()
View	onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
void	onDestroyView()
void	onSaveInstanceState(Bundle outState)
void	onTransitionEnd()
boolean	onTransitionPrepare()
void	onTransitionStart()
void	onViewCreated(View view, Bundle savedInstanceState)
final void	setAdapter(ObjectAdapter rowsAdapter) Sets the adapter that represents a list of rows.
void	setAlignment(int windowAlignOffsetFromTop)
void	setEntranceTransitionState(boolean afterTransition) For rows that willing to participate entrance transition, this function hide views if afterTransition is true, show views if afterTransition is false.
void	setExpand(boolean expand) Set the visibility of titles/hovercard of browse rows.
void	setOnItemViewClickedListener(BaseOnItemViewClickedListener listener) Sets an item clicked listener on the fragment.
void	setOnItemViewSelectedListener(BaseOnItemViewSelectedListener listener) Sets an item selection listener.
final void	setPresenterSelector(PresenterSelector presenterSelector) Set the presenter selector used to create and bind views.
void	setSelectedPosition(int position) Sets the selected row position with smooth animation.
void	setSelectedPosition(int rowPosition, boolean smooth, Presenter.ViewHolderTask rowHolderTask) Selects a Row and perform an optional task on the Row.
void	setSelectedPosition(int position, boolean smooth) Sets the selected row position.

Protected methods
VerticalGridView	findGridViewFromRoot(View view)

Inherited methods
From class android.app.Fragment void dump(String arg0, FileDescriptor arg1, PrintWriter arg2, String[] arg3) final boolean equals(Object arg0) final Activity getActivity() boolean getAllowEnterTransitionOverlap() boolean getAllowReturnTransitionOverlap() final Bundle getArguments() final FragmentManager getChildFragmentManager() Context getContext() Transition getEnterTransition() Transition getExitTransition() final FragmentManager getFragmentManager() final Object getHost() final int getId() final LayoutInflater getLayoutInflater() LoaderManager getLoaderManager() final Fragment getParentFragment() Transition getReenterTransition() final Resources getResources() final boolean getRetainInstance() Transition getReturnTransition() Transition getSharedElementEnterTransition() Transition getSharedElementReturnTransition() final String getString(int arg0, Object... arg1) final String getString(int arg0) final String getTag() final Fragment getTargetFragment() final int getTargetRequestCode() final CharSequence getText(int arg0) boolean getUserVisibleHint() View getView() final int hashCode() static Fragment instantiate(Context arg0, String arg1) static Fragment instantiate(Context arg0, String arg1, Bundle arg2) final boolean isAdded() final boolean isDetached() final boolean isHidden() final boolean isInLayout() final boolean isRemoving() final boolean isResumed() final boolean isStateSaved() final boolean isVisible() void onActivityCreated(Bundle arg0) void onActivityResult(int arg0, int arg1, Intent arg2) void onAttach(Activity arg0) void onAttach(Context arg0) void onAttachFragment(Fragment arg0) void onConfigurationChanged(Configuration arg0) boolean onContextItemSelected(MenuItem arg0) void onCreate(Bundle arg0) Animator onCreateAnimator(int arg0, boolean arg1, int arg2) void onCreateContextMenu(ContextMenu arg0, View arg1, ContextMenu.ContextMenuInfo arg2) void onCreateOptionsMenu(Menu arg0, MenuInflater arg1) View onCreateView(LayoutInflater arg0, ViewGroup arg1, Bundle arg2) void onDestroy() void onDestroyOptionsMenu() void onDestroyView() void onDetach() LayoutInflater onGetLayoutInflater(Bundle arg0) void onHiddenChanged(boolean arg0) void onInflate(AttributeSet arg0, Bundle arg1) void onInflate(Activity arg0, AttributeSet arg1, Bundle arg2) void onInflate(Context arg0, AttributeSet arg1, Bundle arg2) void onLowMemory() void onMultiWindowModeChanged(boolean arg0) void onMultiWindowModeChanged(boolean arg0, Configuration arg1) boolean onOptionsItemSelected(MenuItem arg0) void onOptionsMenuClosed(Menu arg0) void onPause() void onPictureInPictureModeChanged(boolean arg0, Configuration arg1) void onPictureInPictureModeChanged(boolean arg0) void onPrepareOptionsMenu(Menu arg0) void onRequestPermissionsResult(int arg0, String[] arg1, int[] arg2) void onResume() void onSaveInstanceState(Bundle arg0) void onStart() void onStop() void onTrimMemory(int arg0) void onViewCreated(View arg0, Bundle arg1) void onViewStateRestored(Bundle arg0) void postponeEnterTransition() void registerForContextMenu(View arg0) final void requestPermissions(String[] arg0, int arg1) void setAllowEnterTransitionOverlap(boolean arg0) void setAllowReturnTransitionOverlap(boolean arg0) void setArguments(Bundle arg0) void setEnterSharedElementCallback(SharedElementCallback arg0) void setEnterTransition(Transition arg0) void setExitSharedElementCallback(SharedElementCallback arg0) void setExitTransition(Transition arg0) void setHasOptionsMenu(boolean arg0) void setInitialSavedState(Fragment.SavedState arg0) void setMenuVisibility(boolean arg0) void setReenterTransition(Transition arg0) void setRetainInstance(boolean arg0) void setReturnTransition(Transition arg0) void setSharedElementEnterTransition(Transition arg0) void setSharedElementReturnTransition(Transition arg0) void setTargetFragment(Fragment arg0, int arg1) void setUserVisibleHint(boolean arg0) boolean shouldShowRequestPermissionRationale(String arg0) void startActivity(Intent arg0) void startActivity(Intent arg0, Bundle arg1) void startActivityForResult(Intent arg0, int arg1) void startActivityForResult(Intent arg0, int arg1, Bundle arg2) void startIntentSenderForResult(IntentSender arg0, int arg1, Intent arg2, int arg3, int arg4, int arg5, Bundle arg6) void startPostponedEnterTransition() String toString() void unregisterForContextMenu(View arg0)
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()
From interface android.content.ComponentCallbacks2 abstract void onTrimMemory(int arg0)
From interface android.view.View.OnCreateContextMenuListener abstract void onCreateContextMenu(ContextMenu arg0, View arg1, ContextMenu.ContextMenuInfo arg2)
From interface androidx.leanback.app.BrowseFragment.MainFragmentRowsAdapterProvider abstract MainFragmentRowsAdapter getMainFragmentRowsAdapter() Returns an instance of BrowseFragment.MainFragmentRowsAdapter that BrowseFragment would use to communicate with the target fragment.
From interface androidx.leanback.app.BrowseFragment.MainFragmentAdapterProvider abstract MainFragmentAdapter getMainFragmentAdapter() Returns an instance of BrowseFragment.MainFragmentAdapter that BrowseFragment would use to communicate with the target fragment.
From interface android.content.ComponentCallbacks abstract void onConfigurationChanged(Configuration arg0) abstract void onLowMemory()

Public constructors

RowsFragment

public RowsFragment ()

Public methods

enableRowScaling

public void enableRowScaling (boolean enable)

This method is deprecated.
use BrowseFragment.enableRowScaling(boolean) instead.

Parameters
enable	boolean: true to enable row scaling

findRowViewHolderByPosition

public RowPresenter.ViewHolder findRowViewHolderByPosition (int position)

Find row ViewHolder by position in adapter.

Parameters
position	int: Position of row.

Returns
RowPresenter.ViewHolder	ViewHolder of Row.

getAdapter

public final ObjectAdapter getAdapter ()

Returns the Adapter that represents list of rows.

Returns
ObjectAdapter	Adapter that represents list of rows.

getBridgeAdapter

public final ItemBridgeAdapter getBridgeAdapter ()

Returns the RecyclerView.Adapter that wraps getAdapter().

Returns
ItemBridgeAdapter	The RecyclerView.Adapter that wraps getAdapter().

getMainFragmentAdapter

public MainFragmentAdapter getMainFragmentAdapter ()

Returns an instance of BrowseFragment.MainFragmentAdapter that BrowseFragment would use to communicate with the target fragment.

Returns
MainFragmentAdapter

getMainFragmentRowsAdapter

public MainFragmentRowsAdapter getMainFragmentRowsAdapter ()

Returns an instance of BrowseFragment.MainFragmentRowsAdapter that BrowseFragment would use to communicate with the target fragment.

Returns
MainFragmentRowsAdapter

getOnItemViewClickedListener

public BaseOnItemViewClickedListener getOnItemViewClickedListener ()

Returns the item clicked listener.

Returns
BaseOnItemViewClickedListener

getOnItemViewSelectedListener

public BaseOnItemViewSelectedListener getOnItemViewSelectedListener ()

Returns an item selection listener.

Returns
BaseOnItemViewSelectedListener

getPresenterSelector

public final PresenterSelector getPresenterSelector ()

Get the presenter selector used to create and bind views.

Returns
PresenterSelector

getRowViewHolder

public RowPresenter.ViewHolder getRowViewHolder (int position)

Get row ViewHolder at adapter position. Returns null if the row object is not in adapter or the row object has not been bound to a row view.

Parameters
position	int: Position of row in adapter.

Returns
RowPresenter.ViewHolder	Row ViewHolder at a given adapter position.

getSelectedPosition

public int getSelectedPosition ()

Gets position of currently selected row.

Returns
int	Position of currently selected row.

getVerticalGridView

public final VerticalGridView getVerticalGridView ()

Returns
VerticalGridView

isScrolling

public boolean isScrolling ()

Returns
boolean

onCreateView

public View onCreateView (LayoutInflater inflater, 
                ViewGroup container, 
                Bundle savedInstanceState)

Parameters
inflater	LayoutInflater
container	ViewGroup
savedInstanceState	Bundle

Returns
View

onDestroyView

public void onDestroyView ()

onSaveInstanceState

public void onSaveInstanceState (Bundle outState)

Parameters
outState	Bundle

onTransitionEnd

public void onTransitionEnd ()

onTransitionPrepare

public boolean onTransitionPrepare ()

Returns
boolean

onTransitionStart

public void onTransitionStart ()

onViewCreated

public void onViewCreated (View view, 
                Bundle savedInstanceState)

Parameters
view	View
savedInstanceState	Bundle

setAdapter

public final void setAdapter (ObjectAdapter rowsAdapter)

Sets the adapter that represents a list of rows.

Parameters
rowsAdapter	ObjectAdapter: Adapter that represents list of rows.

setAlignment

public void setAlignment (int windowAlignOffsetFromTop)

Parameters
windowAlignOffsetFromTop	int

setEntranceTransitionState

public void setEntranceTransitionState (boolean afterTransition)

For rows that willing to participate entrance transition, this function hide views if afterTransition is true, show views if afterTransition is false.

Parameters
afterTransition	boolean

setExpand

public void setExpand (boolean expand)

Set the visibility of titles/hovercard of browse rows.

Parameters
expand	boolean

setOnItemViewClickedListener

public void setOnItemViewClickedListener (BaseOnItemViewClickedListener listener)

Sets an item clicked listener on the fragment. OnItemViewClickedListener will override View.OnClickListener that item presenter sets during Presenter.onCreateViewHolder(ViewGroup). So in general, developer should choose one of the listeners but not both.

Parameters
listener	BaseOnItemViewClickedListener

setOnItemViewSelectedListener

public void setOnItemViewSelectedListener (BaseOnItemViewSelectedListener listener)

Sets an item selection listener.

Parameters
listener	BaseOnItemViewSelectedListener

setPresenterSelector

public final void setPresenterSelector (PresenterSelector presenterSelector)

Set the presenter selector used to create and bind views.

Parameters
presenterSelector	PresenterSelector

setSelectedPosition

public void setSelectedPosition (int position)

Sets the selected row position with smooth animation.

Parameters
position	int

setSelectedPosition

public void setSelectedPosition (int rowPosition, 
                boolean smooth, 
                Presenter.ViewHolderTask rowHolderTask)

Selects a Row and perform an optional task on the Row. For example setSelectedPosition(10, true, new ListRowPresenterSelectItemViewHolderTask(5)) Scroll to 11th row and selects 6th item on that row. The method will be ignored if RowsFragment has not been created (i.e. before onCreateView(LayoutInflater, ViewGroup, Bundle)).

Parameters
rowPosition	int: Which row to select.
smooth	boolean: True to scroll to the row, false for no animation.
rowHolderTask	Presenter.ViewHolderTask: Task to perform on the Row.

setSelectedPosition

public void setSelectedPosition (int position, 
                boolean smooth)

Sets the selected row position.

Parameters
position	int
smooth	boolean

Protected methods

findGridViewFromRoot

protected VerticalGridView findGridViewFromRoot (View view)

Parameters
view	View

Returns
VerticalGridView