AUAudioUnit.Notifications.ObserveAudioComponentRegistrationsChanged 方法

定義

命名空間:

AudioUnit

組件:

Xamarin.iOS.dll

多載

ObserveAudioComponentRegistrationsChanged(EventHandler<NSNotificationEventArgs>)	常數的 AudioComponentRegistrationsChangedNotification 強型別通知。
ObserveAudioComponentRegistrationsChanged(NSObject, EventHandler<NSNotificationEventArgs>)	常數的 AudioComponentRegistrationsChangedNotification 強型別通知。

ObserveAudioComponentRegistrationsChanged(EventHandler<NSNotificationEventArgs>)

常數的 AudioComponentRegistrationsChangedNotification 強型別通知。

public static Foundation.NSObject ObserveAudioComponentRegistrationsChanged (EventHandler<Foundation.NSNotificationEventArgs> handler);

static member ObserveAudioComponentRegistrationsChanged : EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

參數

handler

EventHandler<NSNotificationEventArgs>

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

這個方法可以用來訂閱 AudioComponentRegistrationsChangedNotification 通知。

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

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

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

ObserveAudioComponentRegistrationsChanged(NSObject, EventHandler<NSNotificationEventArgs>)

常數的 AudioComponentRegistrationsChangedNotification 強型別通知。

public static Foundation.NSObject ObserveAudioComponentRegistrationsChanged (Foundation.NSObject objectToObserve, EventHandler<Foundation.NSNotificationEventArgs> handler);

static member ObserveAudioComponentRegistrationsChanged : Foundation.NSObject * EventHandler<Foundation.NSNotificationEventArgs> -> Foundation.NSObject

參數

objectToObserve

NSObject

要觀察的物件。

handler

EventHandler<NSNotificationEventArgs>

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

這個方法可以用來訂閱 AudioComponentRegistrationsChangedNotification 通知。

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

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

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