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Editorial Team
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Asked: 2026-05-23T08:23:36+00:00

Suppose I have 2 views. In the first view, I allocate memory to displaying

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Suppose I have 2 views. In the first view, I allocate memory to displaying many UI components such as an UILabel, UIImages, etc.

Suppose the user navigates to the next view (via UINavigationController)

Is it OK to deallocate memory assigned to displaying UI components in the first view and then initialize them again once the user goes back to the first view (in viewFirstLoad or the appropriate function)?

It seems to me if you don’t do this, then memory will keep on increasing the longer the user uses your app in that particular session.

Is this not allowed? frowned upon? impossible?

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1 Answer

  1. Editorial Team

    It is perfectly normal and in fact, that functionality is built in standard UIViewController – when controller is not displayed its view may be released from memory and you can release all its subviews (e.g. retained through IBOutlet references) in controller’s -viewDidUnload method.

    When controller needs to display again it reloads its view again.

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