Modal crash in iOS app extension

[npomfret]

I'm seeing my app extension crash on some devices. It launches a Modal which appears briefly before the whole thing vanishes. I can't see an explicit error message but I have noticed the message below (which I don't understand). Any ideas?

2017-05-12 21:01:55.731 [error][tid:main][RCTModalHostViewController.m:68] Modal was presented with 0x2 orientations mask but the application only supports 0x0.Add more interface orientations to your app's Info.plist to fix this.NOTE: This will crash in non-dev mode.
2017-05-12 21:01:55.730695+0100 myapp-share[18726:4276060] Modal was presented with 0x2 orientations mask but the application only supports 0x0.Add more interface orientations to your app's Info.plist to fix this.NOTE: This will crash in non-dev mode.

[Kureev]

I don't know what exactly goes wrong, but after reading this stack trace I have a feeling that your extension requires an unsupported orientation. Could it be so? (Like you disabled landscape orientation, but your extension requires it?)

[npomfret]

That's what I thought, but I have all orientations ticked in the deployment info bit of my app (there's no option in the app extension for this). However, I removed the modal code from my Rn app extension and the it still crashed. So either it's a misleading error message or I have 2 bugs. Either way I'll close for now.

[Kureev]

If at some point you'll sort it out, please, document your findings somewhere 🙏 (mb here?) It may be extremely helpful for others!

[johnlim5847]

not sure it will help or not i think you should add this props supportedOrientations={['portrait', 'landscape']} in your Modal

[lnikkila]

We’re seeing a similar error message in an iMessage extension that uses React Native. It doesn’t seem to crash in production despite what the error message says.

The message comes from RCTModalHostViewController which checks the supported orientations from RCTSharedApplication’s window. RCTUtils returns nil from RCTSharedApplication when React Native is running in an app extension, which translates to 0x0 as the returned supported orientations mask.

I think the modal orientation check is misleading when running in an app extension and should probably be skipped.