NSExtensionContext.Notifications.ObserveHostWillEnterForeground Method

Definition

Overloads

ObserveHostWillEnterForeground(EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the HostWillEnterForegroundNotification constant.

ObserveHostWillEnterForeground(NSObject, EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the HostWillEnterForegroundNotification constant.

ObserveHostWillEnterForeground(EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the HostWillEnterForegroundNotification constant.

public static Foundation.NSObject ObserveHostWillEnterForeground (EventHandler<Foundation.NSNotificationEventArgs> handler);
static member ObserveHostWillEnterForeground : EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

Parameters

handler
EventHandler<NSNotificationEventArgs>

Method to invoke when the notification is posted.

Returns

NSObject

Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>)

Remarks

This method can be used to subscribe for HostWillEnterForegroundNotification notifications.


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

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

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

ObserveHostWillEnterForeground(NSObject, EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the HostWillEnterForegroundNotification constant.

public static Foundation.NSObject ObserveHostWillEnterForeground (Foundation.NSObject objectToObserve, EventHandler<Foundation.NSNotificationEventArgs> handler);
static member ObserveHostWillEnterForeground : Foundation.NSObject * EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

Parameters

objectToObserve
NSObject

The object to observe.

handler
EventHandler<NSNotificationEventArgs>

Method to invoke when the notification is posted.

Returns

NSObject

Token object that can be used to stop receiving notifications by either disposing it or passing it to RemoveObservers(IEnumerable<NSObject>)

Remarks

This method can be used to subscribe for HostWillEnterForegroundNotification notifications.


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

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

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

Applies to