Handling Push Notifications when App is Terminated

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 user with the Alert-View I set up, asking them whether they want to view the Notification's contents or not. It just launches, and sits there.

The Push Notifications do work perfectly when the App is running - either as the Active app or while in the background - but nothing works correctly when the app is not running.

I tried logging-out the launchOptions NSDictionary in application: didFinishLaunchingWithOptions: to see what load its bringing - but it comes up as "(null)". So It basically contains nothing - which doesn't make sense cause shouldn't it contain the Notification's load?

Anybody have any ideas how to make Push Notifications work when they arrive while the App was NOT running?

I mean how to handle the Push notifications when the App is in not running state. What if, if you receive many notifications & you did not open the app, neither did you tap the system's notification panel. How are you preserving those push for a later retrieval.

Answer 1

1) When application is running in background and When application is running in foreground application:didReceiveRemoteNotification: method will called as below.

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if (application.applicationState == UIApplicationStateInactive)
    {
        // opened from a push notification when the app was on background
        NSLog(@"userInfo->%@", [userInfo objectForKey:@"aps"]);
    }
    else if(application.applicationState == UIApplicationStateActive)
    {
        // a push notification when the app is running. So that you can display an alert and push in any view
        NSLog(@"userInfo->%@", [userInfo objectForKey:@"aps"]);
    }
}

2) When application is not launched (close) then application:didFinishedLaunchingWithOptions method will called.

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if (launchOptions != nil)
    {
        // opened from a push notification when the app is closed
        NSDictionary* userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
        if (userInfo != nil)
        {
             NSLog(@"userInfo->%@", [userInfo objectForKey:@"aps"]);
        }
    }
    else
    {
        // opened app without a push notification.
    }
}

3) There is no way to remove a specific notification as of. The way to remove all the notifications from your app so they don't show in the Notification Center when the user opens the app from one of them, is to set the app badge to 0.