How can I programmatically pause an NSTimer?

Question

I\'m using an NSTimer to do some rendering in an OpenGL based iPhone app. I have a modal dialog box that pops up and requests user input. While the user is providing input

Answer 1

If your fire time interval is tolerant, you can use CADisplayLink instead of NSTimer. Because CADisplayLink support -pause.

displayLink = [[CADisplayLink displayLinkWithTarget:self selector:@selector(fireMethod:)];
displayLink.frameInterval = approximateVaue;//CADisplayLink's frame rate is 60 fps.
    [displayLink addToRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];

//pause
[displayLink pause];