UIScrollView pauses NSTimer until scrolling finishes

While a UIScrollView (or a derived class thereof) is scrolling, it seems like all the NSTimers that are running get paused until the scroll is finished.

Is there a way to get around this? Threads? A priority setting? Anything?

An easy & simple to implement solution is to do:

NSTimer *timer = [NSTimer timerWithTimeInterval:... 
                                         target:...
                                       selector:....
                                       userInfo:...
                                        repeats:...];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];

For anyone using Swift 3

timer = Timer.scheduledTimer(timeInterval: 0.1,
                            target: self,
                            selector: aSelector,
                            userInfo: nil,
                            repeats: true)


RunLoop.main.add(timer, forMode: RunLoopMode.commonModes)

Yes, Paul is right, this is a run loop issue. Specifically, you need to make use of the NSRunLoop method:

- (void)addTimer:(NSTimer *)aTimer forMode:(NSString *)mode