MFMessageComposeViewController.Notifications.ObserveTextMessageAvailabilityDidChange Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| Name | Description |
|---|---|
| ObserveTextMessageAvailabilityDidChange(EventHandler<MFMessageAvailabilityChangedEventArgs>) |
Strongly typed notification for the TextMessageAvailabilityDidChangeNotification constant. |
| ObserveTextMessageAvailabilityDidChange(NSObject, EventHandler<MFMessageAvailabilityChangedEventArgs>) |
Strongly typed notification for the TextMessageAvailabilityDidChangeNotification constant. |
ObserveTextMessageAvailabilityDidChange(EventHandler<MFMessageAvailabilityChangedEventArgs>)
Strongly typed notification for the TextMessageAvailabilityDidChangeNotification constant.
public static Foundation.NSObject ObserveTextMessageAvailabilityDidChange(EventHandler<MessageUI.MFMessageAvailabilityChangedEventArgs> handler);static member ObserveTextMessageAvailabilityDidChange : EventHandler<MessageUI.MFMessageAvailabilityChangedEventArgs> -> Foundation.NSObjectParameters
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 TextMessageAvailabilityDidChangeNotification notifications.
// Listen to all notifications posted for any object
var token = MFMessageComposeViewController.Notifications.ObserveTextMessageAvailabilityDidChange ((notification) => {
Console.WriteLine ("Observed TextMessageAvailabilityDidChangeNotification!");
};
// Stop listening for notifications
token.Dispose ();
Applies to
ObserveTextMessageAvailabilityDidChange(NSObject, EventHandler<MFMessageAvailabilityChangedEventArgs>)
Strongly typed notification for the TextMessageAvailabilityDidChangeNotification constant.
public static Foundation.NSObject ObserveTextMessageAvailabilityDidChange(Foundation.NSObject objectToObserve, EventHandler<MessageUI.MFMessageAvailabilityChangedEventArgs> handler);static member ObserveTextMessageAvailabilityDidChange : Foundation.NSObject * EventHandler<MessageUI.MFMessageAvailabilityChangedEventArgs> -> Foundation.NSObjectParameters
- objectToObserve
- NSObject
The specific object to observe.
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 TextMessageAvailabilityDidChangeNotification notifications.
// Listen to all notifications posted for a single object
var token = MFMessageComposeViewController.Notifications.ObserveTextMessageAvailabilityDidChange (objectToObserve, (notification) => {
Console.WriteLine ($"Observed TextMessageAvailabilityDidChangeNotification for {nameof (objectToObserve)}!");
};
// Stop listening for notifications
token.Dispose ();