react / react/react-native

onResponderRelease on View is called one time when releasing two fingers or more at exactly the same time.

Open
#48,416 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

API: Easing Issue: Author Provided Repro
Dominant language
C++
Stars
127k
Forks
25.3k
Avg merge
1d 23h
Merged PRs (30d)
4

Description

Description

Code:

<View
      style={styles.container}
      onStartShouldSetResponder={() => true}
      onMoveShouldSetResponder={() => true}
      onResponderStart={addFingerOnScreen}
      onResponderMove={moveFingersOnScreen}
      onResponderRelease={releaseFingerFromScreen}>
</View>

Actions:

  • I pressed the screen (on the view) with two fingers
  • I released the screen with my two fingers on exactely on the same time

Result:

onResponderRelease is called one time with touches legnth 1 and changed touches lenght 1.

Expected:

onResponderRelease is called two times. The first time with touches length 1 and changed touches length 1. The second time with touches length 0 and changed touches length 1.

OR

onResponderRelease is called 1 time. The first time with touches length 0 and changed touches length 2.

Steps to reproduce
  • I pressed the screen (on the view) with two fingers
  • I released the screen with my two fingers on exactely on the same time
React Native Version

0.76.5

Affected Platforms

Runtime - Android

Output of npx react-native info
System:
  OS: macOS 15.2
  CPU: (8) arm64 Apple M1
  Memory: 324.31 MB / 8.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.12.2
    path: ~/.nvm/versions/node/v20.12.2/bin/node
  Yarn: Not Found
  npm:
    version: 10.5.0
    path: ~/.nvm/versions/node/v20.12.2/bin/npm
  Watchman:
    version: 2024.12.02.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.14.3
    path: /Users/Modis/.rvm/gems/ruby-2.7.6/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2023.2 AI-232.10227.8.2321.11479570
  Xcode:
    version: 16.2/16C5032a
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.13
    path: /usr/bin/javac
  Ruby:
    version: 2.7.6
    path: /Users/Modis/.rvm/rubies/ruby-2.7.6/bin/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 18.3.1
    wanted: 18.3.1
  react-native:
    installed: 0.76.5
    wanted: 0.76.5
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true
Stacktrace or Logs
-
Reproducer

https://github.com/mohamed-amine-haine/responder-release-bug

Screenshots and Videos

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the linked responder-release-bug reproducer on Android and inspect the View responder callbacks shown in the issue. Compare the callback counts and touches/changedTouches values when two fingers are released simultaneously; done means the reported release behavior matches one of the expected outcomes.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, javascript, 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

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.