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Editorial Team
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Asked: 2026-06-17T10:02:37+00:00

In Objective-C, what is the best way to wait to execute something at a

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In Objective-C, what is the best way to wait to execute something at a certain time (set as a timestamp that could be passed to the observer object to know what time to wait for).

For example, I would like set a time for something to ‘finish’ in the future, like building a house, and when the current time is the time that was set as a completion time by the app the app will send a notification or send a message to another object.

What is best way to do this in Objective-C?

Thank you for the help!

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1 Answer

  1. Editorial Team

    I assume you are talking about something that happens during the run of the program (rather than “busing a house” being a real house that gets built months from now).

    The normal tool for this is -[NSTimer initWithFireDate:interval:target:selector:userInfo:repeats:]. This will let you set a specific time to call a method. It just schedules the event on the runloop, which is very cheap. NSTimer is ideal for things that are not time-critical and have fairly long delays (more than a few seconds).

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