CODEWITHSUNDEEP
iospush-notification
Jan
Jan

Reputation: 7644

What is UIApplicationLaunchOptionsRemoteNotificationKey used for?

if I understand correctly, the UIApplicationLaunchOptionsRemoteNotificationKey key is used on the -[UIApplicationDelegate application:didFinishLaunchingWithOptions:] method when - the push was received when the application was not running (e.g. killed) - the user clicked on the received push

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    NSDictionary *userInfo = launchOptions[UIApplicationLaunchOptionsRemoteNotificationKey];
    if(userInfo) {
        // app was not running and the user clicked on the push
    }
}

but .. in this exact same case, the -[AppDelegate application:didReceiveRemoteNotification:fetchCompletionHandler:] is also called just after the previous one.

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler
{
    // called when
    // app was not running and the user clicked on the push
    // app was running in background and user clicked on a push
    // app was running in background and a silent push was received
    // app is in foreground and a push is received
    completionHandler(UIBackgroundFetchResultNewData);
}

So the question is, why should I use the UIApplicationLaunchOptionsRemoteNotificationKey if everything can be handled in the application:didReceiveRemoteNotification:fetchCompletionHandler delegate? Did I miss something?

cheers,

Jan

Upvotes: 5

Views: 1983

Answers (2)

MrWaqasAhmed
MrWaqasAhmed

Reputation: 1489

The presence of this key indicates that a remote notification is available for the app to process. The value of this key is an NSDictionary containing the payload of the remote notification.

Upvotes: 0

Josip B.
Josip B.

Reputation: 2464

In case when the app is killed and user taps on push notification in notification center, launchingOptions dictionary contains UIApplicationLaunchOptionsRemoteNotificationKey so that you can adjust your app start logic. In prior iOS version there wasn't application:didReceiveRemoteNotification: fetchCompletionHandler: and launchingOptions dictionary from application:didFinishLaunchingWithOptions: was the only place where you could handle remote notification on app start.

My guess is that application:didFinishLaunchingWithOptions: contains UIApplicationLaunchOptionsRemoteNotificationKey for compatibility reasons.

Upvotes: 7

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