class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        regisigerNotification()

        return true

    }

    //注册本地通知

    private func regisigerNotification(){

//        let type : [UIUserNotificationType] = [.alert, .badge, .sound]

        if #available(iOS 8.0, *) {

            let uns = UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)

            UIApplication.shared.registerUserNotificationSettings(uns)

        }

    }

}

class ViewController: UIViewController {

    @IBAction func sendNotification(_ sender: Any) {

        /// 创建

        let localNotification = UILocalNotification()

        //设置标题

        localNotification.alertBody = "通知来了"

        //几秒之后执行

        localNotification.fireDate = Date(timeIntervalSinceNow: 2)

        //立即发送

//        UIApplication.shared.presentLocalNotificationNow(localNotification)

        //发送:按照设置的执行时间发送

        UIApplication.shared.scheduleLocalNotification(localNotification)

    }

    //取消

    @IBAction func cancleNotification(_ sender: Any) {

        UIApplication.shared.cancelAllLocalNotifications()

    }

    //查看

    @IBAction func viewNotification(_ sender: Any) {

    print(UIApplication.shared.scheduledLocalNotifications)

    }

}