UIView.Notifications.ObserveFocusedElementKey UIView.Notifications.ObserveFocusedElementKey Method

Definition

Overloads

ObserveFocusedElementKey(EventHandler<NSNotificationEventArgs>) ObserveFocusedElementKey(EventHandler<NSNotificationEventArgs>)

P:UIKit.UIView.FocusedElementKeyNotification

ObserveFocusedElementKey(NSObject, EventHandler<NSNotificationEventArgs>) ObserveFocusedElementKey(NSObject, EventHandler<NSNotificationEventArgs>)

P:UIKit.UIView.FocusedElementKeyNotification

ObserveFocusedElementKey(EventHandler<NSNotificationEventArgs>) ObserveFocusedElementKey(EventHandler<NSNotificationEventArgs>)

P:UIKit.UIView.FocusedElementKeyNotification

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

Parameters

handler
EventHandler<NSNotificationEventArgs>

Method to invoke when the notification is posted.

Returns

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 P:UIKit.UIView.FocusedElementKeyNotification notifications.


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

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

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

ObserveFocusedElementKey(NSObject, EventHandler<NSNotificationEventArgs>) ObserveFocusedElementKey(NSObject, EventHandler<NSNotificationEventArgs>)

P:UIKit.UIView.FocusedElementKeyNotification

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

Parameters

objectToObserve
NSObject NSObject

The object to observe.

handler
EventHandler<NSNotificationEventArgs>

Method to invoke when the notification is posted.

Returns

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 P:UIKit.UIView.FocusedElementKeyNotification notifications.


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

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

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

Applies to