Question

On the same UIViewController, there’s one UILabel being updated every 0.01s by a NSTimer. In the same Controller, there’s an UIView containing a TableController from another .nib.

When I scroll the table, the UILabel stops from updating till the scroll finishes. Any ideas for that?

Thanks in advance.

Answer 1

You should register your timer with “NSRunLoopCommonModes” or “UITrackingRunLoopMode” mode.

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timer) userInfo:nil repeats:YES];
[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];

- (void)timer
{
    label.text = @"different text";
}

And read NSRunLoop Class Reference, Threading Programming Guide and Concurrency Programming Guide