react / react/react-native

[BUG] :: MainActivity memory leak when running foreground service

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Issue: Author Provided Repro Needs: Triage :mag: Newer Patch Available
Dominant language
C++
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Description

I have an issue with the app memory leak in MainActivity when running the foreground service
the

Steps to reproduce
  • my app is running foreground service so when I repeat it about 30 times close -> open -> it causes a memory leak does the react native screen have an option to destroy the screen?
  • I keep the Android process running but when I close (swipe the app out normally in Android swipe the app out it would be killed) and open the app it increases the app memory do we have the option to destroy it?
React Native Version

0.73.6

Affected Platforms

Runtime - Android

Output of npx react-native info
System:
  OS: macOS 14.5
  CPU: (8) arm64 Apple M1
  Memory: 490.44 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.13.1
    path: ~/.asdf/installs/nodejs/20.13.1/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.asdf/installs/nodejs/20.13.1/bin/yarn
  npm:
    version: 10.5.2
    path: ~/.asdf/plugins/nodejs/shims/npm
  Watchman:
    version: 2024.05.06.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /Users/rom/.asdf/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.5
      - iOS 17.5
      - macOS 14.5
      - tvOS 17.5
      - visionOS 1.2
      - watchOS 10.5
  Android SDK: Not Found
IDEs:
  Android Studio: 2023.3 AI-233.14808.21.2331.11842104
  Xcode:
    version: 15.4/15F31d
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.11
    path: /Users/rom/.asdf/shims/javac
  Ruby:
    version: 2.7.8
    path: /Users/rom/.asdf/shims/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.73.6
    wanted: 0.73.6
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: true
  newArchEnabled: false
Stacktrace or Logs
I don't have a stack trace because it is a memory leak
Reproducer

https://github.com/chanphiromsok/rnn-screen-leak

Screenshots and Videos

image

https://github.com/software-mansion/react-native-screens/assets/65760336/05f48f62-0394-43f1-8286-e2146c1b9822

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 with the linked reproducer and the MainActivity lifecycle while the Android foreground service runs on React Native 0.73.6. Repeat the reported close-and-open cycle, measure memory retention, and determine whether MainActivity remains retained; done means the leak is isolated with evidence and its lifecycle behavior is corrected or clearly documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, react-native
Domain
mobile, performance
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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