它与obj-c没有什么不同。
首先，必须在类声明中指定协议，如下所示： @H_404_6@class MyClass: NSUserNotificationCenterDelegate

实现将如下所示：

@H_404_6@// NSUserNotificationCenterDelegate implementation func userNotificationCenter(center: NSUserNotificationCenter,didDeliverNotification notification: NSUserNotification) { //implementation } func userNotificationCenter(center: NSUserNotificationCenter,didActivateNotification notification: NSUserNotification) { //implementation } func userNotificationCenter(center: NSUserNotificationCenter,shouldPresentNotification notification: NSUserNotification) -> Bool { //implementation return true }

当然，你必须设置委托。例如：

@H_404_6@NSUserNotificationCenter.defaultUserNotificationCenter().delegate = self;