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POCreate number of dynamic NSTimers not repeating on very first load, fine after that
 

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  1. POCreate number of dynamic NSTimers not repeating on very first load, fine after that
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    <p>I am creating a number (~5) NSTimer instances from data stored in a SQLite database using the following code below:</p> <pre><code>-(void)setupNotificationTimer:(NSDictionary *)timerDetails{ NSLog(@"TIMER REPEATS VALUE: %@", [timerDetails objectForKey:@"repeats"]); NSLog(@"INTERVAL: %f", [[timerDetails objectForKey:@"interval"] floatValue]); bool repeat = [[timerDetails objectForKey:@"repeats"] boolValue]; if (repeat) { NSLog(@"Should Repeat"); } else{ NSLog(@"Should Not Repeat"); } NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:[[timerDetails objectForKey:@"interval"] floatValue] target:self selector:@selector(fireTimer:) userInfo:timerDetails repeats:repeat]; [timer fire]; [timers addObject:timer]; //'timers' is a property of the AppDelegate } -(void)fireTimer:(NSTimer *)timer { NSLog(@"Timer Fired"); NSMutableDictionary *dict = [timer userInfo]; [[NSNotificationCenter defaultCenter] postNotificationName:[dict objectForKey:@"notificationName"] object:nil]; } </code></pre> <p>When I setup these timers the very first time the app loads the timer is setup correctly as the NSLog output below shows but does not repeat despite clearly being set to repeat. Each timer fires once then does not continue.</p> <pre><code>2013-04-03 11:12:53.541 Test[2635:752b] TIMER REPEATS VALUE: 1 2013-04-03 11:12:53.542 Test[2635:752b] INTERVAL: 10.000000 2013-04-03 11:12:53.543 Test[2635:752b] Should Repeat 2013-04-03 11:12:53.544 Test[2635:752b] Timer Fired </code></pre> <p>The strange thing happens when I close the app and then re-open it, the timers are created and actually fire repeatedly. This app is also a universal iPhone and iPad app and I only seem to get this behaviour when running the app on iPhone. I really am stumped by this and any help is appreciated.</p> <p><strong>Edit</strong></p> <p>As requested the code to cancel the timers:</p> <pre><code>-(void)viewWillDisappear:(BOOL)animated{ NSArray *viewControllersSet = self.navigationController.viewControllers; if (viewControllersSet.count &gt; 1 &amp;&amp; [viewControllersSet objectAtIndex:viewControllersSet.count-2] == self) { // View is disappearing because a new view controller was pushed onto the stack NSLog(@"New view controller was pushed"); } else if ([viewControllersSet indexOfObject:self] == NSNotFound) { // View is disappearing because it was popped from the stack NSLog(@"View controller was popped"); for(int i = 0; i &lt; [[appDelegate timers] count]; i ++){ NSTimer *timer = [[appDelegate timers] objectAtIndex:i]; [timer invalidate]; timer = nil; } [[appDelegate timers] removeAllObjects]; } } </code></pre>
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    1. USSamRowley
    1. USSamRowley
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    1. COYour timerDeatails dictionary might have got changed...that sends NO to nstimer
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      1. USForgot
    2. CO@AnoopVaidya you might need to clarify your thinking there - the OP prints the logs which show the value of `repeat` as being `YES` (printing the `Should Repeat`) there is no way that the dictionary can change the value of a local variable.
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      1. USPaul.s
    3. CO@Paul.s: I thought if this method is again called and then the repeat is read as NO.
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      1. USForgot
 

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