How to trigger NSTimer right away?
You can't schedule the timer and fire the event immediately all in the same line of code. So you have to do it in 2 lines of code.
First, schedule the timer, then immediately call 'fire' on your timer:
timer = [NSTimer scheduledTimerWithTimeInterval: 5 target: self selector: @selector(updatestuff:) userInfo: nil repeats: YES];[timer fire];
When fire is called, the time interval that your timer waits to fire will reset because it just ran, and then will continue to run thereafter at the designated interval--in this case, every 5 seconds.