Pass initial props to JS in detached iOS app

[paulklein]

Is there any way to customise the initial props passed to my root <App> component when running a detached iOS app?
I have been able to do this in android by overriding MainActivity.initialProps but I cannot find an equivalent feature on iOS.

I see that React Native allows you to do this on iOS by using properties on RCTRootView but it seems that this root view is managed by Expo and I can’t seem to get access to it.

Thanks

[ben]

If you just need to pass in some static set of props, the easiest thing to do is use the extra key in app.json: https://docs.expo.io/versions/latest/workflow/configuration#extra

If you need to modify the initial props with some native objective-C logic for whatever reason, we don’t currently expose an easy hook for this. You could subclass EXViewController and modify this logic: https://github.com/expo/expo/blob/master/ios/Exponent/ExpoKit/EXViewController.m#L45-L46 and then set the rootViewControllerClass on the ExpoKit singleton to your custom subclass.