RowHeaderPresenter

extends Presenter

java.lang.Object
↳	android.support.v17.leanback.widget.Presenter
	↳	android.support.v17.leanback.widget.RowHeaderPresenter

Class Overview

RowHeaderPresenter provides a default presentation for HeaderItem using a RowHeaderView. If a subclass creates its own view, the subclass must also override onSelectLevelChanged(ViewHolder).

Summary

Nested Classes
class	RowHeaderPresenter.ViewHolder	A ViewHolder for the RowHeaderPresenter.

Public Constructors
	RowHeaderPresenter()

Public Methods
int	getSpaceUnderBaseline(RowHeaderPresenter.ViewHolder holder) Returns the space (distance in pixels) below the baseline of the text view, if one exists; otherwise, returns 0.
boolean	isNullItemVisibilityGone() Returns true if the view visibility is set to `GONE` when bound to null.
void	onBindViewHolder(Presenter.ViewHolder viewHolder, Object item) Binds a `View` to an item.
Presenter.ViewHolder	onCreateViewHolder(ViewGroup parent) Creates a new `View`.
void	onUnbindViewHolder(Presenter.ViewHolder viewHolder) Unbinds a `View` from an item.
void	setNullItemVisibilityGone(boolean nullItemVisibilityGone) Optionally sets the view visibility to `GONE` when bound to null.
final void	setSelectLevel(RowHeaderPresenter.ViewHolder holder, float selectLevel) Sets the select level.

Protected Methods
static float	getFontDescent(TextView textView, Paint fontMeasurePaint)
void	onSelectLevelChanged(RowHeaderPresenter.ViewHolder holder) Called when the select level changes.

[Expand]

Inherited Methods

From class android.support.v17.leanback.widget.Presenter

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

From interface android.support.v17.leanback.widget.FacetProvider

Public Constructors

public RowHeaderPresenter ()

Public Methods

public int getSpaceUnderBaseline (RowHeaderPresenter.ViewHolder holder)

Returns the space (distance in pixels) below the baseline of the text view, if one exists; otherwise, returns 0.

public boolean isNullItemVisibilityGone ()

Returns true if the view visibility is set to GONE when bound to null.

public void onBindViewHolder (Presenter.ViewHolder viewHolder, Object item)

Binds a View to an item.

public Presenter.ViewHolder onCreateViewHolder (ViewGroup parent)

Creates a new View.

public void onUnbindViewHolder (Presenter.ViewHolder viewHolder)

Unbinds a View from an item. Any expensive references may be released here, and any fields that are not bound for every item should be cleared here.

public void setNullItemVisibilityGone (boolean nullItemVisibilityGone)

Optionally sets the view visibility to GONE when bound to null.

public final void setSelectLevel (RowHeaderPresenter.ViewHolder holder, float selectLevel)

Sets the select level.

Protected Methods

protected static float getFontDescent (TextView textView, Paint fontMeasurePaint)

protected void onSelectLevelChanged (RowHeaderPresenter.ViewHolder holder)

Called when the select level changes. The default implementation sets the alpha on the view.

Results

Interfaces

Classes