程序包 ohos.agp.render.render3d

接口 ViewHolder

public interface ViewHolder

Extracts a specific component that is used for rendering.

从以下版本开始:

3

嵌套类概要

嵌套类

限定符和类型	接口	说明
static interface	ViewHolder.BitmapListener	Provides the listener for events of obtaining component contents in the form of bitmap.
static interface	ViewHolder.SurfaceListener	Provides the listener for surface events.

方法概要

限定符和类型	方法	说明
TargetBuffer	getTargetBuffer()	Obtains the TargetBuffer that can be used to draw content on the component held by a ViewHolder.
Component	getView()	Obtains a component connected to the component holder.
void	release()	Releases the surface held by a ViewHolder.
void	setOpaque(boolean isOpaque)	Sets whether the surface is opaque.
void	setSurfaceListener(ViewHolder.SurfaceListener listener)	Sets a surface listener used to track lifetime events of the surface.

方法详细资料

setSurfaceListener

void setSurfaceListener(ViewHolder.SurfaceListener listener)

Sets a surface listener used to track lifetime events of the surface.

参数:

listener - Indicates the listener to set.

getView

Component getView()

Obtains a component connected to the component holder.

返回:

Returns the component connected to the component holder.

release

void release()

Releases the surface held by a ViewHolder.

getTargetBuffer

TargetBuffer getTargetBuffer()

Obtains the TargetBuffer that can be used to draw content on the component held by a ViewHolder.

If TargetBuffer is used as the drawing target of an engine, the ViewHolder should be passed to the engine. For details, see Engine#setDefaultTargetBuffer(TargetBuffer).

返回:

Returns the target buffer.

setOpaque

void setOpaque(boolean isOpaque)

Sets whether the surface is opaque.

参数:

isOpaque - Indicates whether the surface is opaque. true indicates that the surface is opaque.