iOS 区域设置通知弹出窗口未出现

Question

我是 iOS 编程的新手，在我的应用程序中，我有一个 UILocaleNotification，它必须在某个时间出现。

所以首先我设置参数：

let notificationSettings: UIUserNotificationSettings! = UIApplication.sharedApplication().currentUserNotificationSettings()

    if (notificationSettings.types == UIUserNotificationType.None) {
        var notificationTypes: UIUserNotificationType = UIUserNotificationType.Alert | UIUserNotificationType.Sound

        // Bouton d'envoi
        var sendAction = UIMutableUserNotificationAction()
        sendAction.identifier = "send"
        sendAction.title = "Send"
        sendAction.activationMode = UIUserNotificationActivationMode.Foreground
        sendAction.destructive = false
        sendAction.authenticationRequired = true

        // Bouton de non-envoi
        var dontSendAction = UIMutableUserNotificationAction()
        dontSendAction.identifier = "dontsend"
        dontSendAction.title = "Don't send"
        dontSendAction.activationMode = UIUserNotificationActivationMode.Background
        dontSendAction.destructive = true
        dontSendAction.authenticationRequired = false

        let actionsArray = NSArray(objects: sendAction, dontSendAction)

        var reminderNotification = UIMutableUserNotificationCategory()
        reminderNotification.identifier = "reminderNotification"
        reminderNotification.setActions(actionsArray as [AnyObject], forContext: UIUserNotificationActionContext.Minimal)

        let categoriesForSettings = NSSet(objects: reminderNotification)

        let newNotificationSettings = UIUserNotificationSettings(forTypes: notificationTypes, categories: categoriesForSettings as Set<NSObject>)
        UIApplication.sharedApplication().registerUserNotificationSettings(newNotificationSettings)
    }

...我这样安排我的通知：

var localNotification = UILocalNotification()
    localNotification.fireDate = NSDate(timeIntervalSinceNow: 3)
    localNotification.timeZone = NSTimeZone.defaultTimeZone()
    localNotification.alertBody = "Hey, inform your contacts !"
    localNotification.alertAction = "Send Message"
    localNotification.category = "reminderNotification"
    localNotification.soundName = UILocalNotificationDefaultSoundName

    UIApplication.sharedApplication().scheduleLocalNotification(localNotification)

当我尝试此代码时，通知中心会显示正确的通知，但没有显示弹出窗口... 我在网上搜索了资源，我不明白为什么这些示例和教程都显示弹出窗口，因为我编写了相同的代码......

感谢您的帮助，祝您有美好的一天！

编辑：我忘记了一些事情：必须检测事件的是通知中心，而不是区域设置通知。所以我想让通知中心的 addObserver 检查一个事件，是否可以在后台状态？

Answer 1

根据这一行：localNotification.fireDate = NSDate(timeIntervalSinceNow: 3) 您希望在 3 秒后触发您的通知。我假设该应用程序在发生时仍处于前台。如果是这种情况，您将不会弹出通知。

如果链接到通知的应用在收到通知时打开，它必须在您的AppDelegate 中处理它以显示自定义弹出窗口。

func application(application: UIApplication!, didReceiveLocalNotification notification: UILocalNotification!) {
        // do your jobs here
}