EAAccessoryManager.Notifications.ObserveDidDisconnect 方法

定義

命名空間:

ExternalAccessory

組件:

Xamarin.iOS.dll

多載

ObserveDidDisconnect(EventHandler<EAAccessoryEventArgs>)	常數的 DidDisconnectNotification 強型別通知。
ObserveDidDisconnect(NSObject, EventHandler<EAAccessoryEventArgs>)	常數的 DidDisconnectNotification 強型別通知。

ObserveDidDisconnect(EventHandler<EAAccessoryEventArgs>)

常數的 DidDisconnectNotification 強型別通知。

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

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

參數

handler

EventHandler<EAAccessoryEventArgs>

張貼通知時叫用的方法。

傳回

NSObject

權杖物件，可用來停止接收通知，方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

下列範例示範開發人員如何在程式碼中使用此方法：

//
// 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>)

常數的 DidDisconnectNotification 強型別通知。

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

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

參數

objectToObserve

NSObject

要觀察的物件。

handler

EventHandler<EAAccessoryEventArgs>

張貼通知時叫用的方法。

傳回

NSObject

權杖物件，可用來停止接收通知，方法是處置通知或傳遞至 RemoveObservers(IEnumerable<NSObject>)

備註

這個方法可用來訂閱 DidDisconnectNotification 通知。

// 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 ();