Share via


AVSampleBufferDisplayLayer.Notifications.ObserveDisplayLayerReadyForDisplayDidChange Method

Definition

Overloads

ObserveDisplayLayerReadyForDisplayDidChange(EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the DisplayLayerReadyForDisplayDidChangeNotification constant.

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

Parameters

handler
EventHandler<NSNotificationEventArgs>

The handler that responds to the notification when it occurs.

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 to DisplayLayerReadyForDisplayDidChangeNotification notifications.

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

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

Applies to

ObserveDisplayLayerReadyForDisplayDidChange(NSObject, EventHandler<NSNotificationEventArgs>)

Strongly typed notification for the DisplayLayerReadyForDisplayDidChangeNotification constant.

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

Parameters

objectToObserve
NSObject

The specific object to observe.

handler
EventHandler<NSNotificationEventArgs>

The handler that responds to the notification when it occurs.

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 to DisplayLayerReadyForDisplayDidChangeNotification notifications.

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

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

Applies to