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POHow to make a button appear and disappear throughout a timer
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  1. POHow to make a button appear and disappear throughout a timer
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    copied!<p>I have this app which has a timer in it and I want to be able to display a button at random points in that timer. Sort Of like a game setting where you have to get the button to get more time before it disappears. I already have some code , but the problem is that the timer that i already have is being messed up ( i can tell because it is linked to a label. It messed up because it goes down by 2 instead of 1 and this only happens when i have the code to make the button appear and disappear with the timer.</p> <p>Here is the code to my timer that is being messed up:</p> <pre><code>-(IBAction)Ready:(id)sender { [self performSelector:@selector(TimerDelay) withObject:nil afterDelay:1.0]; [self performSelector:@selector(randomTimer) withObject:nil afterDelay:0.5]; } -(void)TimerDelay { MainInt = 36; timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(countDownDuration) userInfo:nil repeats:YES]; } </code></pre> <p>Here is the code to the button:</p> <pre><code> -(IBAction)Ready:(id)sender { //the same ready action as above [self performSelector:@selector(TimerDelay) withObject:nil afterDelay:1.0]; [self performSelector:@selector(randomTimer) withObject:nil afterDelay:0.5]; } -(void)TimerDelay { MainInt = 36; timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(countDownDuration) userInfo:nil repeats:YES]; } - (void)randomTimer { NSInteger randomTime = arc4random_uniform(0); //Some number between 0 and 9 timer = [NSTimer scheduledTimerWithTimeInterval:randomTime target:self selector:@selector(showButton) userInfo:nil repeats:NO]; } - (void)showButton { if(self.plus5.hidden == YES) { self.plus5.hidden = NO; } else { self.plus5.hidden = YES; } [self TimerDelay]; //Call random timer function again to run this method at a future random time } </code></pre>
 

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