Error in RNGestureHandlerTouchEvent with react-native-gesture-handler ~2.16.1 on Android

[offcarlospetit]

Description

When trying to compile my app using version ~2.16.1 of react-native-gesture-handler, I encounter an error in the init method related to RNGestureHandlerTouchEvent. The error occurs due to an unsafe operation when trying to get the SurfaceId from handler.view. Although I managed to fix the issue by modifying the source code, I believe this should be addressed in the official library.

The build fails with the following error: RNGestureHandlerTouchEvent Type mismatch: inferred type is View! but String was expected

I modified the code in RNGestureHandlerTouchEvent to add null checks in the init method:

private fun <T : GestureHandler<T>> init(handler: T) {
    handler.view?.let { UIManagerHelper.getSurfaceId(it) }
      ?.let { super.init(it, handler.view!!.id) }
    extraData = createEventData(handler)
    coalescingKey = handler.eventCoalescingKey
  }

Steps to reproduce

1. Create a React Native app with the following setup:
   • React Native: 0.75.4
   • react-native-gesture-handler: ~2.16.1
   • Expo: ^51.0.0
2. Implement a gesture handler using the RNGestureHandlerTouchEvent function.
3. Run the project on Android using Android Studio.

Snack or a link to a repository

https://github.com/offcarlospetit/testIssue

Gesture Handler version

2.16.1

React Native version

0.75.4

Platforms

Android

JavaScript runtime

Hermes

Workflow

React Native (without Expo)

Architecture

Fabric (New Architecture)

Build type

Debug mode

Device

None

Device model

No response

Acknowledgements

Yes

[latekvo]

Hi @offcarlospetit, thanks for the report! Have you tried using RNGH version 2.20.0? Version 2.16.1 is quite dated and definitely wasn't prepared for React Native version 0.75.4

[offcarlospetit]

Hi @offcarlospetit, thanks for the report! Have you tried using RNGH version 2.20.0? Version 2.16.1 is quite dated and definitely wasn't prepared for React Native version 0.75.4

Actually, I hadn't done that because I initially installed the Expo module in a bare RN app, and I relied on the npx expo install react-native-gesture-handler command, which installed an older version. However, I just installed the latest version you mentioned (2.20.0), and it works perfectly. Thanks for the suggestion!