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MPVolumeView.WirelessRouteActiveDidChangeNotification 屬性

定義

WirelessRouteActiveDidChange 的通知常數

[Foundation.Advice("Use MPVolumeView.Notifications.ObserveWirelessRouteActiveDidChange helper method instead.")]
[Foundation.Field("MPVolumeViewWirelessRouteActiveDidChangeNotification", "MediaPlayer")]
[ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)]
public static Foundation.NSString WirelessRouteActiveDidChangeNotification { [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)] get; }
member this.WirelessRouteActiveDidChangeNotification : Foundation.NSString

屬性值

NSString 常數應該用來做為 NSNotificationCenter 的權杖。

屬性

備註

這個常數可以搭配 使用 NSNotificationCenter ,以註冊此通知的接聽程式。 這是 NSString 而非字串,因為這些值可以當做某些原生程式庫中的權杖使用,而不是單純用於其實際字串內容。 回呼的 'notification' 參數包含通知類型特有的額外資訊。

// Lambda style
NSNotificationCenter.DefaultCenter.AddObserver (
        MPVolumeView.WirelessRouteActiveDidChangeNotification, (notification) => {Console.WriteLine ("Received the notification MPVolumeView", notification); }


// Method style
void Callback (NSNotification notification)
{
    Console.WriteLine ("Received a notification MPVolumeView", notification);
}

void Setup ()
{
    NSNotificationCenter.DefaultCenter.AddObserver (MPVolumeView.WirelessRouteActiveDidChangeNotification, Callback);
}

適用於