设置NSUserDefault当应用程序取消或不活动时

Question

I receive a push notification when the my app is closed or canceled. Is there a way to set an nsuserdefault when this happens? I know if a user taps the notification or opens the app from the notification you can check if the app was inactive or canceled but what if they don't open the app from the notification but rather just launch the app by clicking on the icon?

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {

I know this method is called but it seems like I can not save to nsuserdefaults if the app is terminated or canceled.

Answer 1

If the app is closed or inactive and user opens the app through the icon , you will get the remote notification in "didFinishLaunchingWithOptions" method if any notification is available , there you can set you userdefault if you want . Here is the code to get the remote notification in "didFinishLaunchingWithOptions"

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


if (launchOptions) { //launchOptions is not nil
    NSDictionary *userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
    NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];

    if (apsInfo) { //apsInfo is not nil
        [self performSelector:@selector(postNotificationToPresentPushMessagesVC) 
                   withObject:nil
                   afterDelay:1];
    }
}
return YES;
}

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Hope this Helps!