ios nstimer run in background for check alarm time is equal to current time and play audio

Question

I googled it for hours, but could not find any information if there is any way to keep a running NSTimer active when the app is running in the background ? Please Help me ,

Answer 1

NSTimer will not run in background. and using beginBackgroundTaskWithExpirationHandler won't save your problem. with background task your app can run max 10 min and then will get killed

you should use UILocalNotification

UILocalNotification *localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = dateTime;
localNotification.alertBody = [NSString stringWithFormat:@"Alert Fired at %@", dateTime];
localNotification.soundName = UILocalNotificationDefaultSoundName;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

calculate time with NSCalendar and add this line:

localNotification.repeatInterval = NSDayCalendarUnit;