Stop and Reset NSTimer

Question

I have a simple timer using that is activated with a button is pushed. It runs from 60 to 0 no problem but what I want is to stop and reset the timer on push button. I have

Answer 1

You need to set the seconds down to 0, otherwise the you always invalidate your timer, but never start it again:

- (IBAction)timerStart:(id)sender {
    if(!secondCounter == 0) {
        [countdownTimer invalidate];
        secondCounter = 0;
    }
    else {
        [self setTimer];
    }
}