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POpause button when pressed again to resume reloading view controllers
 

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    <p>I am using <code>AVAudioplayer</code> to <strong>play audio files</strong>, <strong>play/pause button to toggle between play and pause</strong> and <code>NSTimer</code> with <code>audio player</code> to synchronize <code>view controllers</code> one after another. I have a total of 10 or 11 <code>view controllers</code> to load one after the other.</p> <p>When play button is pressed the very first time it starts <code>NSTimer</code>, starts playing an <code>audio file</code> and based on <code>NSTimer</code>, view controllers will load one after the other. When pause button is pressed again to resume it resumes everything from that point audio file, <code>NSTimer</code> and <code>view controllers</code> from the same point where it was paused which is good. However, at the same time it starts loading the <code>view controllers</code> again one after the other from the beginning based on <code>NSTimer</code> which is not good. </p> <p>It is reloading view controllers with this statement</p> <pre><code>self.timer = [NSTimer scheduledTimerWithTimeInterval:11.0 target:self selector:@selector(displayviewsAction:) userInfo:nil repeats:NO]; </code></pre> <p>So my issue is that I need to stop the loading of <code>view controllers</code> again from the beginning when pause button is pressed again to resume playback.</p> <pre><code>-(void)playpauseAction:(id)sender { if ([audioPlayer isPlaying]) { [sender setImage:[UIImage imageNamed:@"Play Icon.png"] forState:UIControlStateSelected]; [audioPlayer pause]; [self pauseTimer]; } else { [sender setImage:[UIImage imageNamed:@"pause.png"] forState:UIControlStateNormal]; [audioPlayer play]; [self resumeTimer]; self.timer = [NSTimer scheduledTimerWithTimeInterval:11.0 target:self selector:@selector(displayviewsAction:) userInfo:nil repeats:NO]; } } -(void)pauseTimer{ pauseStart = [[NSDate dateWithTimeIntervalSinceNow:0] retain]; previousFireDate = [[timer fireDate] retain]; [timer setFireDate:[NSDate distantFuture]]; } -(void)resumeTimer{ float pauseTime = -1*[pauseStart timeIntervalSinceNow]; [timer setFireDate:[previousFireDate initWithTimeInterval:pauseTime sinceDate:previousFireDate]]; [pauseStart release]; [previousFireDate release]; } - (void)displayviewsAction:(id)sender { First *firstController = [[First alloc] init]; firstController.view.frame = CGRectMake(0, 0, 320, 480); CATransition *transitionAnimation = [CATransition animation]; [transitionAnimation setDuration:1]; [transitionAnimation setType:kCATransitionFade]; [transitionAnimation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn]]; [self.view.layer addAnimation:transitionAnimation forKey:kCATransitionFade]; [self.view addSubview:firstController.view]; [self.view addSubview:toolbar]; [firstController release]; self.timer = [NSTimer scheduledTimerWithTimeInterval:23 target:self selector:@selector(Second) userInfo:nil repeats:NO]; } </code></pre> <p>Can anyone give an idea on how to stop the loading of <code>view controllers</code> again from the beginning when pause button is pressed again to resume playback.</p>
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