EAAccessoryManager.Notifications.ObserveDidDisconnect Method

Definition

Namespace:

ExternalAccessory

Assembly:

Xamarin.iOS.dll

Overloads

ObserveDidDisconnect(EventHandler<EAAccessoryEventArgs>)	Strongly typed notification for the DidDisconnectNotification constant.
ObserveDidDisconnect(NSObject, EventHandler<EAAccessoryEventArgs>)	Strongly typed notification for the DidDisconnectNotification constant.

ObserveDidDisconnect(EventHandler<EAAccessoryEventArgs>)

Strongly typed notification for the DidDisconnectNotification constant.

public static Foundation.NSObject ObserveDidDisconnect (EventHandler<ExternalAccessory.EAAccessoryEventArgs> handler);

static member ObserveDidDisconnect : EventHandler<ExternalAccessory.EAAccessoryEventArgs> -> Foundation.NSObject

Parameters

handler

EventHandler<EAAccessoryEventArgs>

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

The following example shows how developers can use this method in their code:

//
// Lambda style
//

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

    Console.WriteLine ("Accessory", args.Accessory);
    Console.WriteLine ("Selected", args.Selected);
});

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

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

    Console.WriteLine ("Accessory", args.Accessory);
    Console.WriteLine ("Selected", args.Selected);
}

void Setup ()
{
    notification = EAAccessoryManager.Notifications.ObserveDidDisconnect (Callback);
}

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

ObserveDidDisconnect(NSObject, EventHandler<EAAccessoryEventArgs>)

Strongly typed notification for the DidDisconnectNotification constant.

public static Foundation.NSObject ObserveDidDisconnect (Foundation.NSObject objectToObserve, EventHandler<ExternalAccessory.EAAccessoryEventArgs> handler);

static member ObserveDidDisconnect : Foundation.NSObject * EventHandler<ExternalAccessory.EAAccessoryEventArgs> -> Foundation.NSObject

Parameters

objectToObserve

NSObject

The object to observe.

handler

EventHandler<EAAccessoryEventArgs>

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 DidDisconnectNotification notifications.

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

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

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