UIView.Notifications.ObserveAnnouncementDidFinish 方法

定義

命名空間:

UIKit

組件:

Xamarin.iOS.dll

多載

ObserveAnnouncementDidFinish(EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>)	常數的 AnnouncementDidFinishNotification 強型別通知。
ObserveAnnouncementDidFinish(NSObject, EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>)	常數的 AnnouncementDidFinishNotification 強型別通知。

ObserveAnnouncementDidFinish(EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>)

常數的 AnnouncementDidFinishNotification 強型別通知。

public static Foundation.NSObject ObserveAnnouncementDidFinish (EventHandler<UIKit.UIAccessibilityAnnouncementFinishedEventArgs> handler);

static member ObserveAnnouncementDidFinish : EventHandler<UIKit.UIAccessibilityAnnouncementFinishedEventArgs> -> Foundation.NSObject

參數

handler

EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>

張貼通知時叫用的方法。

傳回

NSObject

權杖物件，可用來停止接收通知，方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

這個方法可以用來訂閱 AnnouncementDidFinishNotification 通知。

// Listen to all notifications posted for any object
var token = UIView.Notifications.ObserveAnnouncementDidFinish ((notification) => {
	Console.WriteLine ("Observed AnnouncementDidFinishNotification!");
};

// Listen to all notifications posted for a single object
var token = UIView.Notifications.ObserveAnnouncementDidFinish (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed AnnouncementDidFinishNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();

ObserveAnnouncementDidFinish(NSObject, EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>)

常數的 AnnouncementDidFinishNotification 強型別通知。

public static Foundation.NSObject ObserveAnnouncementDidFinish (Foundation.NSObject objectToObserve, EventHandler<UIKit.UIAccessibilityAnnouncementFinishedEventArgs> handler);

static member ObserveAnnouncementDidFinish : Foundation.NSObject * EventHandler<UIKit.UIAccessibilityAnnouncementFinishedEventArgs> -> Foundation.NSObject

參數

objectToObserve

NSObject

要觀察的物件。

handler

EventHandler<UIAccessibilityAnnouncementFinishedEventArgs>

張貼通知時叫用的方法。

傳回

NSObject

權杖物件，可用來停止接收通知，方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

這個方法可以用來訂閱 AnnouncementDidFinishNotification 通知。

// Listen to all notifications posted for any object
var token = UIView.Notifications.ObserveAnnouncementDidFinish ((notification) => {
	Console.WriteLine ("Observed AnnouncementDidFinishNotification!");
};

// Listen to all notifications posted for a single object
var token = UIView.Notifications.ObserveAnnouncementDidFinish (objectToObserve, (notification) => {
	Console.WriteLine ($"Observed AnnouncementDidFinishNotification for {nameof (objectToObserve)}!");
};

// Stop listening for notifications
token.Dispose ();