程序包 ohos.agp.window.service

类 DisplayManager

java.lang.Object

ohos.agp.window.service.DisplayManager

public class DisplayManager
extends Object

Manage Display instances.

This class is a singleton and is used to obtain Display objects for more information on the display.

从以下版本开始:

2

方法概要

限定符和类型	方法	说明
void	addDisplayEventCallback(Context context, IDisplayEventCallback listener)	Register a callback for display events.
List<Display>	getAllDisplays(Context context)	Obtain all displays of a specific context.
Optional<Display>	getDefaultDisplay(Context context)	Obtain the default display of a specific context.
static DisplayManager	getInstance()	Create a single DisplayManager instance.
void	removeDisplayEventCallback(Context context, IDisplayEventCallback listener)	Deregister the callback for display events.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

getInstance

public static DisplayManager getInstance()

Create a single DisplayManager instance.

This method is a static factory method.

返回:

Returns a DisplayManager instance.

getDefaultDisplay

public Optional<Display> getDefaultDisplay(Context context)

Obtain the default display of a specific context.

参数:

context - Indicates the current context.

返回:

Returns the default display.

getAllDisplays

public List<Display> getAllDisplays(Context context)

Obtain all displays of a specific context.

参数:

context - Indicates the current context.

返回:

Returns all displays.

addDisplayEventCallback

public void addDisplayEventCallback(Context context,
                                    IDisplayEventCallback listener)

Register a callback for display events.

参数:

context - Indicates the application context.

listener - Indicates the IDisplayEventCallback object.

从以下版本开始:

5

removeDisplayEventCallback

public void removeDisplayEventCallback(Context context,
                                       IDisplayEventCallback listener)

Deregister the callback for display events.

参数:

context - Indicates the application context.

listener - Indicates the IDisplayEventCallback object.

从以下版本开始:

5