Handling Push Notifications when App is NOT running

Question

When my App is not running and receives a Push Notification, if I click on that notification, the App is launched - but then it doesn\'t prompt the

Answer 1

Although this has been answered, none of the provided answer actually worked correctly. Here is my implementation that I was able to get working.

This code goes in application:didFinishLaunchingWithOptions:

Swift:

if let options = launchOptions, notification = options[UIApplicationLaunchOptionsRemoteNotificationKey] as? [NSObject : AnyObject] {
    // NOTE: (Kyle Begeman) May 19, 2016 - There is an issue with iOS instantiating the UIWindow object. Making this call without
    // a delay will cause window to be nil, thus preventing us from constructing the application and assigning it to the window.
    Quark.runAfterDelay(seconds: 0.001, after: {
        self.application(application, didReceiveRemoteNotification: notification)
    })
}

Objective-C:

if (launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]) {
    [self application:application didReceiveRemoteNotification:launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey]];
}

A couple notes:

• Possibly due to the way iOS queues allocations, the root UIApplication.sharedApplication().window object is nil when launching the application after being killed. Adding a 1 millisecond delay fixed this issue. Did not test this in Objective-C

• Casting to [NSObject: AnyObject] was required to keep from having type conflicts but I did not experiment with this much; keep it in your mind when implementing in your own project. Objective-C does not require this.

• Quark is just a fun little library I use in all my projects that contains helpful and commonly used extensions and methods. Simply use any form of delay that fits your application needs.

Answer 2

Swift 3 and xCode 8.3.2:

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // your code here

    // Check if app was not running in background and user taps on Push Notification
    // This will perform your code in didReceiveRemoteNotification where you should handle different application states
    if let options = launchOptions, let notification = options[UIApplicationLaunchOptionsKey.remoteNotification] as? [NSObject : AnyObject] {
        self.application(application, didReceiveRemoteNotification: notification)
    }

    return true
}