Swift2 push when app is closed - ios

Question

I want to make a request every 15 minutes. Then I want to make a push notification to the user.
I use this code.
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
// Override point for customization after application launch.
// push
application.registerUserNotificationSettings(UIUserNotificationSettings(forTypes: [UIUserNotificationType.Sound, UIUserNotificationType.Alert, UIUserNotificationType.Badge],categories:nil))
// background fetch
let settings = UIUserNotificationSettings(forTypes: [UIUserNotificationType.Sound, UIUserNotificationType.Alert, UIUserNotificationType.Badge], categories: nil)
UIApplication.sharedApplication().registerUserNotificationSettings(settings)
UIApplication.sharedApplication().setMinimumBackgroundFetchInterval(UIApplicationBackgroundFetchIntervalMinimum)
return true
}
func application(application: UIApplication, performFetchWithCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
print("Complete");
completionHandler(UIBackgroundFetchResult.NewData)
getData();
}
func getData() -> Void {
let p = PushService()
p.Push("Changed")
}
It works fine but only one time.
And when I close this app via task manager there is no push.
So how I can send push notifications every 15 minutes even when the user closed my app. (like WhatsApp or another messenger)
I use a local push.

Answer 1

As mentioned by myself and others, I wouldn't recommend going about it in the app. Instead, you should use Parse.com Cloud Code for managing and setting Push Notifications:
https://parse.com/apps/quickstart#cloud_code/window
This links shows how to set up Cloud Code using your terminal. You can automate Push Notifications using Parse as well. Parse has relatively good documentation which can help you get started.
Here's the push notification homepage on Parse: https://parse.com/products/push
Here are the parse docs for Push Notifications which will take you through registering your app for Push Notifications as well: https://parse.com/docs/ios/guide#push-notifications
Go down to "Sending Pushes" in the docs. This is where Parse will help you set up Push notifications with Cloud Code on Parse.
Once you set it up, go to your project, then "Core" and click jobs, and you'll get this screen (note, this is my project and I'm deleting posts. You can name this whatever you want):
Use this link for your push notification javascript code as a tutorial: How to send Push Notifications with Parse.com Cloudcode it's a good example. On Parse, as the image I posted above shows, you can get specific on when you want the push notification to push to the user.
Hope that helps