Mark `Keyboard` module as unsupported on VisionOS

[okwasniewski]

Description

Goal of this issue is to mark Keyboard module as unsupported for VisionOS.

As stated in Apple docs: https://developer.apple.com/documentation/uikit/uikeyboardwillshownotification?language=objc :

An app running in visionOS never receives this notification. The system displays the keyboard in a separate window, leaving the app’s window unaffected by the keyboard’s appearance and disappearance.

Goals:

• Avoid registering listeners inside RCTKeyboardObserver (#if TARGET_OS_VISION)
• Mark Keyboard and KeyboardAvoidingView as not supported

[thiagobrez]

I can take this one!

[thiagobrez]

@okwasniewski PR #25 is open for review, but I'm getting a memory leak. Probably related to the changes in RCTKeyboardObserver but did not find the culprit yet.

WARN  Sending `didReceiveNetworkData` with no listeners registered.
WARN  Sending `didCompleteNetworkResponse` with no listeners registered.
WARN  Sending `didSendNetworkData` with no listeners registered.
WARN  Sending `didSendNetworkData` with no listeners registered.
WARN  Sending `didSendNetworkData` with no listeners registered.
WARN  Sending `didReceiveNetworkResponse` with no listeners registered.

Will continue investigating, but sending here in case you see something I don't!

[TMisiukiewicz]

@thiagobrez I had the same issue, it was a bug in the core and it was already reverted: https://github.com/facebook/react-native/commit/8ac47faf32dae1744f93dae711b9c92bfe783c23 https://github.com/facebook/react-native/commit/4e04ff5610b0f20c59701920a165c46f21ef2446

[thiagobrez]

Yeah thanks @TMisiukiewicz! @okwasniewski also warned me about it, good to know 🙏🏻

So I'll just wait for it to be synced and re-test

[derwaldgeist]

I actually was confused by the message:

"Keyboard is not available on visionOS platform."

I read this as if React Native visionOS would not support text input at all? Or do you mean that just a certain way to hook into keyboard notifications is unsupported, i.e. to get notified when the keyboard pops up?

[okwasniewski]

I think refining this message as Keyboard API is not available on visionOS platform. would be better. visionOS supports text inputs but doesn't support receiving events and imperatively controlling the keyboard.

I will re-open this issue to take care of this. I also noticed that this pops up when user is not using Keyboard API

[derwaldgeist]

Yes, makes sense. Does this also mean that keyboard events won't work in general? Like to check if the enter key has been pressed in an input field?

[okwasniewski]

@derwaldgeist Keyboard API doesn't handle this. You can use TextInput's onSubmitEditing callback to detect when user pressed the enter (submit key) and it works properly on visionOS.