Android APIs
public class

RowsFragment

extends Fragment
java.lang.Object
   ↳ android.app.Fragment
     ↳ android.support.v17.leanback.app.RowsFragment

Class Overview

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 elements in this adapter must be subclasses of Row.

Summary

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Inherited XML Attributes
From class android.app.Fragment
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Inherited Constants
From interface android.content.ComponentCallbacks2
Public Constructors
RowsFragment()
Public Methods
void enableRowScaling(boolean enable)
Enables scaling of rows.
final ObjectAdapter getAdapter()
Returns the list of rows.
OnItemViewClickedListener getOnItemViewClickedListener()
Returns the item clicked listener.
OnItemViewSelectedListener getOnItemViewSelectedListener()
Returns an item selection listener.
final PresenterSelector getPresenterSelector()
Get the presenter selector used to create and bind views.
void onCreate(Bundle savedInstanceState)
Called to do initial creation of a fragment.
View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
Called to have the fragment instantiate its user interface view.
void onDestroyView()
Called when the view previously created by onCreateView(LayoutInflater, ViewGroup, Bundle) has been detached from the fragment.
void onViewCreated(View view, Bundle savedInstanceState)
Called immediately after onCreateView(LayoutInflater, ViewGroup, Bundle) has returned, but before any saved state has been restored in to the view.
final void setAdapter(ObjectAdapter rowsAdapter)
Sets the adapter for the fragment.
void setExpand(boolean expand)
Set the visibility of titles/hovercard of browse rows.
void setOnItemViewClickedListener(OnItemViewClickedListener listener)
Sets an item clicked listener on the fragment.
void setOnItemViewSelectedListener(OnItemViewSelectedListener 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, boolean smooth)
Sets the selected row position.
void setSelectedPosition(int position)
Sets the selected row position with smooth animation.
Protected Methods
VerticalGridView findGridViewFromRoot(View view)
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Inherited Methods
From class android.app.Fragment
From class java.lang.Object
From interface android.content.ComponentCallbacks2
From interface android.view.View.OnCreateContextMenuListener
From interface android.content.ComponentCallbacks

Public Constructors

public RowsFragment ()

Public Methods

public void enableRowScaling (boolean enable)

Enables scaling of rows.

Parameters
enable true to enable row scaling

public final ObjectAdapter getAdapter ()

Returns the list of rows.

public OnItemViewClickedListener getOnItemViewClickedListener ()

Returns the item clicked listener.

public OnItemViewSelectedListener getOnItemViewSelectedListener ()

Returns an item selection listener.

public final PresenterSelector getPresenterSelector ()

Get the presenter selector used to create and bind views.

public void onCreate (Bundle savedInstanceState)

Called to do initial creation of a fragment. This is called after onAttach(Activity) and before onCreateView(LayoutInflater, ViewGroup, Bundle).

Note that this can be called while the fragment's activity is still in the process of being created. As such, you can not rely on things like the activity's content view hierarchy being initialized at this point. If you want to do work once the activity itself is created, see onActivityCreated(Bundle).

Parameters
savedInstanceState If the fragment is being re-created from a previous saved state, this is the state.

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

Called to have the fragment instantiate its user interface view. This is optional, and non-graphical fragments can return null (which is the default implementation). This will be called between onCreate(Bundle) and onActivityCreated(Bundle).

If you return a View from here, you will later be called in onDestroyView() when the view is being released.

Parameters
inflater The LayoutInflater object that can be used to inflate any views in the fragment,
container If non-null, this is the parent view that the fragment's UI should be attached to. The fragment should not add the view itself, but this can be used to generate the LayoutParams of the view.
savedInstanceState If non-null, this fragment is being re-constructed from a previous saved state as given here.
Returns
  • Return the View for the fragment's UI, or null.

public void onDestroyView ()

Called when the view previously created by onCreateView(LayoutInflater, ViewGroup, Bundle) has been detached from the fragment. The next time the fragment needs to be displayed, a new view will be created. This is called after onStop() and before onDestroy(). It is called regardless of whether onCreateView(LayoutInflater, ViewGroup, Bundle) returned a non-null view. Internally it is called after the view's state has been saved but before it has been removed from its parent.

public void onViewCreated (View view, Bundle savedInstanceState)

Called immediately after onCreateView(LayoutInflater, ViewGroup, Bundle) has returned, but before any saved state has been restored in to the view. This gives subclasses a chance to initialize themselves once they know their view hierarchy has been completely created. The fragment's view hierarchy is not however attached to its parent at this point.

Parameters
view The View returned by onCreateView(LayoutInflater, ViewGroup, Bundle).
savedInstanceState If non-null, this fragment is being re-constructed from a previous saved state as given here.

public final void setAdapter (ObjectAdapter rowsAdapter)

Sets the adapter for the fragment.

public void setExpand (boolean expand)

Set the visibility of titles/hovercard of browse rows.

public void setOnItemViewClickedListener (OnItemViewClickedListener listener)

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

public void setOnItemViewSelectedListener (OnItemViewSelectedListener listener)

Sets an item selection listener.

public final void setPresenterSelector (PresenterSelector presenterSelector)

Set the presenter selector used to create and bind views.

public void setSelectedPosition (int position, boolean smooth)

Sets the selected row position.

public void setSelectedPosition (int position)

Sets the selected row position with smooth animation.

Protected Methods

protected VerticalGridView findGridViewFromRoot (View view)