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Adding and decreasing time with UIButton to Timer

Hello everyone, I have a question, how can I add and decrease time using UIButton on timer, for example if I have a minus and plus button and timer time.

Thank.

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-(void)viewDidLoad{
  UIButton *buttonPlus = [UIButton buttonWithType:UIButtonTypeRoundedRect];
  UIButton *buttonMinus = [UIButton buttonWithType:UIButtonTypeRoundedRect];

 [buttonPlus addTarget:self action:@selector(addTime) forControlEvents:UIControlEventTouchUpInside];
 [buttonMinus addTarget:self action:@selector(removeTime) forControlEvents:UIControlEventTouchUpInside];

 [self.view addSubview:buttonMinus];
 [self.view addSubview:buttonPlus];

}

-(void) addTime {
    [yourTimer setFireDate:[[yourTimer fireDate] dateByAddingTimeInterval:secondsToAdd]];
}

-(void) removeTime {
    [yourTimer setFireDate:[[yourTimer fireDate] dateByAddingTimeInterval:-secondsToAdd]];
}


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you can add time to NSTimer using this:

[yourTimer setFireDate:[[yourTimer fireDate] dateByAddingTimeInterval:secondsToAdd]];

You can reduce the time to NSTimer using:



[yourTimer setFireDate:[[yourTimer fireDate] dateByAddingTimeInterval:-secondsToDecrease]];

Hope this helps!

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