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POHow would I make my timer run in the background and then send a local notification?
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  1. POHow would I make my timer run in the background and then send a local notification?
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    copied!<p>For some reason my timer only runs in the foreground. I've searched here for solutions but I couldn't find any good ones. My timer uses Core Data and my timeInterval is saved after every decrement. Also, I'm sending a UILocalNotification but that doesn't work. I'm assuming it doesn't send a alert view if its in the foreground..Well this is what I have now:</p> <pre><code>-(IBAction)startTimer:(id)sender{ if (timer == nil) { [startButton setTitle:@"Pause" forState:UIControlStateNormal]; timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timerAction:) userInfo:nil repeats:YES]; } else { [startButton setTitle:@"Resume" forState:UIControlStateNormal]; [timer invalidate]; timer = nil; } } -(void)timerAction:(NSTimer *)t { if(testTask.timeInterval == 0) { if (self.timer) { [self timerExpired]; [self.timer invalidate]; self.timer = nil; } } else { testTask.timeInterval--; NSError *error; if (![self.context save:&amp;error]) { NSLog(@"couldn't save: %@", [error localizedDescription]); } } NSUInteger seconds = (NSUInteger)round(testTask.timeInterval); NSString *string = [NSString stringWithFormat:@"%02u:%02u:%02u", seconds / 3600, (seconds / 60) % 60, seconds % 60]; timerLabel.text = string; NSLog(@"%f", testTask.timeInterval); } -(void)timerExpired{ UILocalNotification* localNotification = [[UILocalNotification alloc] init]; localNotification.alertBody = @"Time is up"; localNotification.alertAction = @"Ok"; localNotification.timeZone = [NSTimeZone defaultTimeZone]; [[UIApplication sharedApplication]presentLocalNotificationNow:localNotification]; } </code></pre> <p>I would really appreciate some guidance to making my timer work in the background (just like Apple's timer). I'm not sure how I would use NSDateComponents since I also need the testTask.timeInterval to be updated even when the application in the background..</p>
 

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