added in version 22.1.0
belongs to Maven artifact com.android.support:leanback-v17:28.0.0-alpha1

RowHeaderPresenter

public class RowHeaderPresenter
extends Presenter

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

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

Summary

Nested classes
`class`	`RowHeaderPresenter.ViewHolder` A ViewHolder for the RowHeaderPresenter.

Public constructors
`RowHeaderPresenter()` Creates default RowHeaderPresenter using a title view and a description view.

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.

From class


  
    android.support.v17.leanback.widget.Presenter