ios - Add and decrease time with UIButton to Timer -

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Hi everyone, I have a question that how can I add and subtract time with UIButton for example, for example if I will put a button with zero and plus and time on the timer

Thank you. 

  - (zero) viewDidoad {UIButton * buttonPlus = [with UIButton Button: UIButtonTypeRoundedRect] ; UIButton * Button Menu = [System With UIButton Button: UIButtonTypeRoundedRect]; [ButtonPlugas addTarget: Self-Proceeding: @Selector (for standtime events): UIControlEventTouchUpInside]; [Button middle addTarget: self-action: @Selector (remove time) for control events: UIControlEventTouchUpInside]; [Self.view addSubview: Buttonmen]; [Self.view addSubview: buttonplus]; } - (zero) adtime {[yourTimer setFireDate: [[Your timer's forward date] DateBudding TimeInternval: Secondsad]]; } - (zero) time to remove {[yourTimer setFireDate: [[your timer's forward date] datebeding timeInternval: -secondaid]]; }

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