Switch animation does not seem to work correctly when updating value prop
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Description
Hi. I noticed a strange behaviour of switch component when value is changed any other way than actual interact with switch. (so, basically, when we set a new prop value)
Description
When you set new "value" prop value Android animation is working, but it does not have that ripple effect (idk if it is supposed to work like that), and iOS animation is not working at all that looks not pretty.
React Native version:
$ react-native info
System:
OS: macOS 11.5
CPU: (8) arm64 Apple M1
Memory: 68.00 MB / 16.00 GB
Shell: 5.8 - /bin/zsh
Binaries:
Node: 16.2.0 - ~/.nvm/versions/node/v16.2.0/bin/node
Yarn: 1.22.10 - ~/.nvm/versions/node/v16.2.0/bin/yarn
npm: 7.16.0 - ~/.nvm/versions/node/v16.2.0/bin/npm
Watchman: 2021.06.07.00 - /opt/homebrew/bin/watchman
Managers:
CocoaPods: 1.10.1 - /usr/local/bin/pod
SDKs:
iOS SDK:
Platforms: iOS 14.5, DriverKit 20.4, macOS 11.3, tvOS 14.5, watchOS 7.4
Android SDK:
API Levels: 28, 29, 30
Build Tools: 28.0.3, 29.0.2, 30.0.2, 30.0.3, 31.0.0, 31.0.0, 31.0.0
System Images: android-29 | Intel x86 Atom_64, android-29 | Google APIs Intel x86 Atom, android-30 | Google APIs ARM 64 v8a, android-S | Google APIs ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: Not Found
Xcode: 12.5.1/12E507 - /usr/bin/xcodebuild
Languages:
Java: 1.8.0_292 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: 17.0.1 => 17.0.1
react-native: 0.64.1 => 0.64.1
react-native-macos: Not Found
npmGlobalPackages:
react-native: Not Found
Steps To Reproduce
Just update a value prop for Switch component
Snack, code example, screenshot, or link to a repository:
See an example here: mrAnomalyy/rn-switch-issue
iOS GIF
Android GIF
P.S. I've been digging on RN iOS code for Switch component and I was able to fix the issue just by replacing this value (see pic below) with YES, but obviously it does not look like a good solution.
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 Switch component and the React Native iOS code mentioned in the report, using the linked rn-switch-issue example to reproduce the behavior when the value prop changes. Compare the iOS and Android results with direct interaction, and consider the issue done when prop updates produce the intended animations consistently on both platforms.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- 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