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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. 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.

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 obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    android.support.v17.leanback.widget.FacetProvider

Public constructors

RowHeaderPresenter

RowHeaderPresenter ()

Public methods

getSpaceUnderBaseline

int getSpaceUnderBaseline (RowHeaderPresenter.ViewHolder holder)

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

Parameters
`holder`	`RowHeaderPresenter.ViewHolder`

Returns
`int`

isNullItemVisibilityGone

boolean isNullItemVisibilityGone ()

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

Returns
`boolean`

onBindViewHolder

void onBindViewHolder (Presenter.ViewHolder viewHolder, 
                Object item)

Binds a View to an item.

Parameters
`viewHolder`	`Presenter.ViewHolder`
`item`	`Object`

onCreateViewHolder

Presenter.ViewHolder onCreateViewHolder (ViewGroup parent)

Creates a new View.

Parameters
`parent`	`ViewGroup`

Returns
`Presenter.ViewHolder`

onUnbindViewHolder

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.

Parameters
`viewHolder`	`Presenter.ViewHolder`

setNullItemVisibilityGone

void setNullItemVisibilityGone (boolean nullItemVisibilityGone)

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

Parameters
`nullItemVisibilityGone`	`boolean`

setSelectLevel

void setSelectLevel (RowHeaderPresenter.ViewHolder holder, 
                float selectLevel)

Sets the select level.

Parameters
`holder`	`RowHeaderPresenter.ViewHolder`
`selectLevel`	`float`

Protected methods

getFontDescent

float getFontDescent (TextView textView, 
                Paint fontMeasurePaint)

Parameters
`textView`	`TextView`
`fontMeasurePaint`	`Paint`

Returns
`float`

onSelectLevelChanged

void onSelectLevelChanged (RowHeaderPresenter.ViewHolder holder)

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

Parameters
`holder`	`RowHeaderPresenter.ViewHolder`

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Results for

RowHeaderPresenter

Summary

Nested classes

Public constructors

Public methods

Protected methods

Inherited methods

Public constructors

RowHeaderPresenter

Public methods

getSpaceUnderBaseline

isNullItemVisibilityGone

onBindViewHolder

onCreateViewHolder

onUnbindViewHolder

setNullItemVisibilityGone

setSelectLevel

Protected methods

getFontDescent

onSelectLevelChanged