is appdelegate being deprecated
Asked on 2025-06-30
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Yes, the UIApplicationDelegate is being deprecated in favor of the UI Scene lifecycle. According to the session What’s new in UIKit, legacy UIApplicationDelegate callbacks and UIApplication launch option keys are no longer applicable. The only initializer that remains is the init window scene initializer for UIWindow, and every other initializer is deprecated. Following iOS 26, any UIKit app built with the latest SDK will be required to use the UI Scene lifecycle, otherwise it will not launch.
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