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Editorial Team
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Asked: 2026-06-14T06:05:49+00:00

I have an app that has a UITableView and in my Cells I have

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I have an app that has a UITableView and in my Cells I have UIImageViews and UILabels that change images/textColors for a day theme and a night theme (trying to be automatically set).

My issue is that I set the images and colors when the table is populated with cellForRowAtIndexPath and its during the day “theme”, then if I reopen the app hours later in the night “theme” and the app is still in the “background” and not needing to be reloaded (ie viewDidLoad doesn’t fire), the day “theme” shows until I scroll the UITableView and then the night “theme” shows when new cells are brought into view by scrolling.

How should I set the objects in my cells when changing around time of the day? I was thinking to use an NSTimer, but I’m not sure how to update the objects in my cells. I was also thinking about using the appropriate methods in the AppDelagate to set things in motion, but is there a way to force reloading the TableView?

Any suggestions?

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1 Answer

  1. Editorial Team

    you could call [tableView reloadData] when viewWillAppear is called. viewDidLoad will not occur often enough for you, what you really want is to refresh when the view is about to appear to the user.

    You can also check for applicationWillEnterForeground on your app delegate and signal to your view controller to reload its tableview this way as well.

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