Question

I want my NSTimer to speed up each time it’s run:

-(void)runtimer {
   int delay = delay - 1;
   [NSTimer scheduledTimerWithTimeInterval:(delay) 
                                    target:self 
                                  selector:@selector(timerTriggered:) 
                                  userInfo:nil 
                                   repeats:YES];

}

But this doesn’t work. How can I make the delay keep getting smaller and smaller?

Answer 1

You have to declare the delay somewhere, like in the class interface or as a static variable.

Also, create a new timer every time, instead of having it repeat.

int delay = INITIAL_DELAY;

-(void)runtimer{
    [NSTimer scheduledTimerWithTimeInterval:(NSTimeInterval)(delay--) target:self selector:@selector(runTimer:) userInfo:nil repeats:NO];
}