Question

I would like my app to check on a date while running in the background. At that point, I would like to do a local notification, but I know how to do that… What I am interested in is, if somebody even clicks the home button, and my app is in the background, I would like my app to check what date it is (once a day, while in the background), and if it is a particular date, I would like to do a local notification – a sort of an app-specific calendar…

Any ideas??

Answer 1

Your app (probably) doesn’t run in the background so you cannot check the date, but you can schedule a local notification for a specific date (fireDate) with the following

UILocalNotification *localNotif = [[UILocalNotification alloc] init];
localNotif.fireDate = [NSDate dateWithTimeIntervalSinceNow:60*90];  // the date you want the notification to fire.
localNotif.timeZone = [NSTimeZone defaultTimeZone];
[[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

For more info see Apple’s docs