ios wont trigger re-render with appearance.setColorSheme() on app start
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Description
Description
When using Appearance.setColorScheme on app start, the change doesnt trigger a re-render in ios. I used the latest react native bare app and added a Appeareance.setColorScheme('white') in app component.
This works on android, thus the app will start in white mode. But it doesnt work on ios, the app starts in system mode nevertheless.
But the colorScheme is set to white, because if i want to set it to white again to trigger re-render manually, nothing happens, because i want to change it to the same value it is set to.
React Native Version
0.72.3
Output of npx react-native info
System:
OS: macOS 13.4.1
CPU: (8) arm64 Apple M1 Pro
Memory: 79.59 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 16.17.0
path: /usr/local/bin/node
Yarn:
version: 1.22.19
path: /usr/local/bin/yarn
npm:
version: 9.6.0
path: /usr/local/bin/npm
Watchman:
version: 2023.07.24.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.12.0
path: /usr/local/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 22.2
- iOS 16.2
- macOS 13.1
- tvOS 16.1
- watchOS 9.1
Android SDK:
API Levels:
- "28"
- "30"
- "31"
- "33"
Build Tools:
- 29.0.2
- 30.0.2
- 30.0.3
- 31.0.0
- 33.0.0
System Images:
- android-31 | Google APIs ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: 2021.2 AI-212.5712.43.2112.8815526
Xcode:
version: 14.2/14C18
path: /usr/bin/xcodebuild
Languages:
Java:
version: 11.0.20
path: /opt/homebrew/opt/openjdk@11/bin/javac
Ruby:
version: 3.2.2
path: /Users/user/.rbenv/shims/ruby
npmPackages:
"@react-native-community/cli": Not Found
react:
installed: 18.2.0
wanted: 18.2.0
react-native:
installed: 0.72.3
wanted: 0.72.3
react-native-macos: Not Found
npmGlobalPackages:
"react-native": Not Found
Android:
hermesEnabled: true
newArchEnabled: false
iOS:
hermesEnabled: true
newArchEnabled: false
Steps to reproduce
- new react native application
- Appearance.setColorScheme() at the start of the app, i use layouteffect in app
function App(): JSX.Element {
const isDarkMode = useColorScheme() === 'dark';
const backgroundStyle = {
backgroundColor: isDarkMode ? Colors.darker : Colors.lighter,
};
useLayoutEffect(() => {
Appearance.setColorScheme('light');
}, []);
.
.
.
Snack, screenshot, or link to a repository
https://github.com/Pluvas159/appearanceIOS
https://github.com/facebook/react-native/assets/79486973/50e18243-3723-4f51-8421-e9b8903f3cd7
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 linked appearanceIOS reproduction and the App component's useLayoutEffect call to Appearance.setColorScheme('light'). Compare the iOS and Android behavior when the app starts, then verify that iOS applies the requested scheme and re-renders, using the reported React Native 0.72.3 setup.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- react-native, typescript
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100