UIApplication.DidFinishLaunchingNotification 屬性

定義

命名空間:

UIKit

組件:

Xamarin.iOS.dll

DidFinishLaunching 的通知常數

[Foundation.Advice("Use UIApplication.Notifications.ObserveDidFinishLaunching helper method instead.")]
[Foundation.Field("UIApplicationDidFinishLaunchingNotification", "UIKit")]
public static Foundation.NSString DidFinishLaunchingNotification { get; }

member this.DidFinishLaunchingNotification : Foundation.NSString

屬性值

NSString

NSString 常數應作為 NSNotificationCenter 的權杖使用。

屬性

AdviceAttribute FieldAttribute

備註

這個常數可以與 搭配 NSNotificationCenter 使用，以註冊此通知的接聽程式。 這是 NSString 而不是字串，因為這些值可以當做某些原生程式庫中的標記使用，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。

若要訂閱此通知，開發人員可以使用方便 UIApplication.Notifications 的 。 ObserveDidFinishLaunching 方法可提供通知參數的強型別存取。

下列範例示範如何使用強型別的 Notifications 類別，將猜測從通知中的可用屬性中取出：

//
// Lambda style
//

// listening
notification = UIApplication.Notifications.ObserveDidFinishLaunching ((sender, args) => {
    /* Access strongly typed args */
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Url", args.Url);
    Console.WriteLine ("SourceApplication", args.SourceApplication);
    Console.WriteLine ("RemoteNotifications", args.RemoteNotifications);
    Console.WriteLine ("LocationLaunch", args.LocationLaunch);
});

// To stop listening:
notification.Dispose ();

//
// Method style
//
NSObject notification;
void Callback (object sender, UIKit.UIApplicationLaunchEventArgs args)
{
    // Access strongly typed args
    Console.WriteLine ("Notification: {0}", args.Notification);

    Console.WriteLine ("Url", args.Url);
    Console.WriteLine ("SourceApplication", args.SourceApplication);
    Console.WriteLine ("RemoteNotifications", args.RemoteNotifications);
    Console.WriteLine ("LocationLaunch", args.LocationLaunch);
}

void Setup ()
{
    notification = UIApplication.Notifications.ObserveDidFinishLaunching (Callback);
}

void Teardown ()
{
    notification.Dispose ();
}

下列範例示範如何搭配 DefaultCenter API 使用通知：

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


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

void Setup ()
{
    NSNotificationCenter.DefaultCenter.AddObserver (UIApplication.DidFinishLaunchingNotification, Callback);
}