ios - Detect if the app was launched/opened from a push notification

Question

Is it possible to know if the app was launched/opened from a push notification?

I guess the launching event can be caught here:

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

    if (launchOptions != nil) {
         // Launched from push notification
         NSDictionary *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];

    }
}

However, how can I detect it was opened from a push notification when the app was in background?

Answer 1

See This code :

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    if ( application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground  )
    {
         //opened from a push notification when the app was on background
    }
}

same as

-(void)application:(UIApplication *)application didReceiveLocalNotification (UILocalNotification *)notification