UIView.AnnouncementDidFinishNotification 属性
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
AnnouncementDidFinish 的通知常量
[Foundation.Advice("Use UIView.Notifications.ObserveAnnouncementDidFinish helper method instead.")]
[Foundation.Field("UIAccessibilityAnnouncementDidFinishNotification", "UIKit")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 6, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public static Foundation.NSString AnnouncementDidFinishNotification { [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 6, 0, ObjCRuntime.PlatformArchitecture.All, null)] get; }
member this.AnnouncementDidFinishNotification : Foundation.NSString
属性值
NSString 常量应用作 NSNotificationCenter 的令牌。
- 属性
注解
此常量可用于注册 NSNotificationCenter 此通知的侦听器。 这是 NSString 而不是字符串,因为这些值可以用作某些本机库中的标记,而不是纯粹用于其实际字符串内容。 回调的“notification”参数包含特定于通知类型的额外信息。
// Lambda style
NSNotificationCenter.DefaultCenter.AddObserver (
UIView.AnnouncementDidFinishNotification, (notification) => {
Console.WriteLine ("Received the notification UIView", notification);
});
// Method style
void Callback (NSNotification notification)
{
Console.WriteLine ("Received a notification UIView", notification);
}
void Setup ()
{
NSNotificationCenter.DefaultCenter.AddObserver (UIView.AnnouncementDidFinishNotification, Callback);
}
适用于
另请参阅
- AnnouncementNotification
- AnnouncementDidFinishNotification
- ClosedCaptioningStatusDidChangeNotification
- GuidedAccessStatusDidChangeNotification
- <xref:UIKit.UIView.InvertColorStatusDidChangeNotification>
- LayoutChangedNotification
- MonoAudioStatusDidChangeNotification
- PageScrolledNotification
- ScreenChangedNotification
- <xref:UIKit.UIView.VoiceOverStatusChangedNotification>