【Android】Touch event misbehavior with multiple touch points
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- C++
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Description
Description
When I have multiple touch points on Android, events are mistakenly triggered.
In my case, when I place my finger on view A, which is bound to touch events, if I do not release my finger and place another finger on view B, the touch event for view A is triggered again, even though the second finger is on a different view.
I tested the behavior on iOS, and with the same operation, if my other finger is on view B, the touch event for view A is not triggered. Only if the other finger is also placed on view A will the touch event for view A be triggered again.
I also tried using TouchableWithoutFeedback, Pressable, and encountered the same issue on Android.
Steps to reproduce
- Install the app
- Place one finger on a view that is bound to an event and keep it there, then place another finger on a view that is not bound to any event to reproduce the issue
React Native Version
0.80.1
Affected Platforms
Runtime - Android
Output of npx @react-native-community/cli info
System:
OS: macOS 14.2.1
CPU: (8) arm64 Apple M3
Memory: 135.97 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 23.10.0
path: ~/.nvm/versions/node/v23.10.0/bin/node
Yarn:
version: 1.22.22
path: /usr/local/bin/yarn
npm:
version: 10.9.2
path: ~/.nvm/versions/node/v23.10.0/bin/npm
Watchman:
version: 2024.10.21.00
path: /usr/local/bin/watchman
Managers:
CocoaPods:
version: 1.15.2
path: /usr/local/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 23.4
- iOS 17.4
- macOS 14.4
- tvOS 17.4
- visionOS 1.1
- watchOS 10.4
Android SDK: Not Found
IDEs:
Android Studio: 2023.3 AI-233.14808.21.2331.11709847
Xcode:
version: 15.3/15E204a
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.11
path: /usr/bin/javac
Ruby:
version: 3.1.0
path: /Users/didi/.rbenv/shims/ruby
npmPackages:
"@react-native-community/cli":
installed: 19.0.0
wanted: 19.0.0
react:
installed: 19.1.0
wanted: 19.1.0
react-native:
installed: 0.80.1
wanted: 0.80.1
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: true
newArchEnabled: true
Stacktrace or Logs
no logs
MANDATORY Reproducer
https://github.com/yandadaFreedom/reproducer-react-native-0.80.1/tree/bug-android-multi-point-event
Screenshots and Videos
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the mandatory reproducer at yandadaFreedom/reproducer-react-native-0.80.1, install the app, and reproduce the multi-touch sequence on Android. Trace the touch-event handling involved in TouchableWithoutFeedback and Pressable, then verify that a second finger on an unrelated view does not retrigger the first view while a second finger on the same view does.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- android, react-native
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100