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Editorial Team
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Asked: 2026-05-28T04:06:15+00:00

I have a function that selects a row on a UITableView and then fires

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I have a function that selects a row on a UITableView and then fires didSelectRowAtIndexPath to emulate the row having been clicked. This all happens very fast making it hard to see what has happened, I want to artificially pause between these actions so that it is more pleasing to the eye.

I implemented this using NSTimer using the following code however it only has a resolution as low as 1 second. I would ideally like to pause around 300 ms. How can I achieve as simply as possible?

[[NSRunLoop currentRunLoop] runUntilDate:[NSDate dateWithTimeIntervalSinceNow:1]];
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1 Answer

  1. Editorial Team

    I’m not sure I agree with calling didSelectRowAtIndexPath directly. I would suggest moving whatever you’re doing in there to a separate method (say, selectionResponse:) and calling that directly.

    Once you’ve done this, you can use performSelector:withObject:afterDelay: to call your selectionResponse: method, setting the afterDelay: argument to whatever value you want.

    The link for the documentation on performSelector:withObject:afterDelay is here

    Note that it’s also a good idea to use + cancelPreviousPerformRequestsWithTarget:selector:object: (from the same document) in your dealloc, to cancel a pending perform request if your user chooses to back out of your view controller within the delay period, before the selector is invoked. This will prevent a crash.

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