Question

我希望能够点击“从现在开始1分钟”或“从现在开始1小时”的按钮，然后关闭通知（推/横幅）。我该怎么做呢？

Answer 1

使用以下命令

按照按钮单击设置计时器1分钟或1小时

 NSTimer.scheduledTimerWithTimeInterval(time, target: self, selector: #selector(functionName), userInfo: nil, repeats: true)

然后在该功能中广播通知，如下所示

NSNotificationCenter.defaultCenter().postNotificationName("youFunctionName", object: nil)

要在其中接收通知的viewcontroller中的addobserver

NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(youFunctionName), name: "youFunctionName", object: nil)

Answer 2

在这里，您可以编写代码来安排本地通知：

//First register for User Settings if iOS8 or above
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
...
     if #available(iOS 8, *) {
          application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [.Sound, .Alert, .Badge], categories: nil))
     }
...
return true
}

//Function to schedule the local notification
func scheduleNotificationWithInterval(secondsAfter:Double, notificationTitle title:String, notificationBody body:String) {

     let fireDate = NSDate()

     let localNotif = UILocalNotification()

     localNotif.fireDate = fireDate.dateByAddingTimeInterval(secondsAfter)

     localNotif.alertBody = body

     if #available(iOS 8.2, *) {
          localNotif.alertTitle = title
     }

     localNotif.soundName = UILocalNotificationDefaultSoundName;
     localNotif.applicationIconBadgeNumber = 1;

     UIApplication.sharedApplication().scheduleLocalNotification(localNotif)

}

希望它有所帮助：]

如何从现在起X分钟后发出通知？

2 个答案: