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fix(ios): keep Debug startup order for expo-dev-launcher under UIScene #39

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Merged
markm39 merged 1 commit into from
Oct 14, 2026
Merged

fix(ios): keep Debug startup order for expo-dev-launcher under UIScene #39

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19 changes: 17 additions & 2 deletions ios/OpenNotes/AppDelegate.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -21,8 +21,16 @@ public class AppDelegate: ExpoAppDelegate {
reactNativeFactory = factory
bindReactNativeFactory(factory)

// React Native starts in SceneDelegate. iOS 27 terminates apps built with
// its SDK at launch unless they adopt the UIScene lifecycle.
#if DEBUG
// Debug keeps the original startup order: expo-dev-launcher's app delegate
// subscriber requires a window during didFinishLaunching. SceneDelegate
// attaches this window to the scene once it connects.
window = UIWindow(frame: UIScreen.main.bounds)
factory.startReactNative(withModuleName: "main", in: window, launchOptions: launchOptions)
#endif

// Release starts React Native in SceneDelegate. iOS 27 terminates apps built
// with its SDK at launch unless they adopt the UIScene lifecycle.
return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}

Expand Down Expand Up @@ -59,6 +67,13 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
let factory = appDelegate.reactNativeFactory else {
return
}
// Debug already started React Native in a window during launch.
if let existing = appDelegate.window {
existing.windowScene = windowScene
existing.makeKeyAndVisible()
self.window = existing
return
}
let window = UIWindow(windowScene: windowScene)
self.window = window
appDelegate.window = window
Expand Down
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