[Android] Incorrect border coloration with sufficiently high border radius
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描述
Description
It seems Android has trouble displaying the correct border colors when borderRadius exceeds a certain value.
The use case here is having an easily reusable style or component which can be circular regardless of the size; most easily achieved by setting a high border radius. Given that this works as intended on iOS and web, I assume it is a supported use case. If border radius is not intended to exceed a certain calculable value it should be noted in the docs somewhere but I was unable to find any relevant information. Alternatively, It might make sense to clamp the value in the RN core code but I'll leave that to the maintainers to decide.
Based on my testing this issue only impacts Android as you can see in the screenshots from the snack I've linked below.
Web:
iOS:
Android:
I've seen some other recent issues around border radius on Android but none of them seem to be directly related to this particular behavior based on my understanding so apologies if this is a duplicate, obviously feel free to close/merge in that case.
React Native Version
0.72.7
Output of npx react-native info
System:
OS: macOS 13.6
CPU: (10) arm64 Apple M1 Max
Memory: 2.82 GB / 64.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 18.16.0
path: ~/.nvm/versions/node/v18.16.0/bin/node
Yarn:
version: 1.22.19
path: ~/.nvm/versions/node/v18.16.0/bin/yarn
npm:
version: 9.5.1
path: ~/.nvm/versions/node/v18.16.0/bin/npm
Watchman:
version: 2023.10.23.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.14.2
path: /opt/homebrew/opt/ruby/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 23.0
- iOS 17.0
- macOS 14.0
- tvOS 17.0
- watchOS 10.0
Android SDK: Not Found
IDEs:
Android Studio: 2022.2 AI-222.4459.24.2221.9971841
Xcode:
version: 15.0.1/15A507
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.2
path: /usr/bin/javac
Ruby:
version: 3.2.2
path: /opt/homebrew/opt/ruby/bin/ruby
npmPackages:
"@react-native-community/cli": Not Found
react:
installed: 18.2.0
wanted: 18.2.0
react-native:
installed: 0.72.7
wanted: 0.72.7
react-native-macos: Not Found
npmGlobalPackages:
"react-native": Not Found
Android:
hermesEnabled: true
newArchEnabled: false
iOS:
hermesEnabled: true
newArchEnabled: false
Steps to reproduce
- Create a
<View />. - Give the view different colors for each of
borderTopColor,borderBottomColor,borderRightColor, andborderLeftColor - Set the view's
heightandwidthto any number,n - Set the view's
borderRadiusto any number greater thann/2 - Observe the coloration of the border. Optionally, you can change the
borderRadiusvalue to see how the colors change with different values.
Snack, screenshot, or link to a repository
贡献指南
从这里开始
- 先读完整个 Issue,再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
调研方向
首先运行链接的 Snack,并使用不同的边框颜色以及大于视图大小一半的 borderRadius 重现 Android 行为。跟踪 Android 上 React Native border-rendering 的入口点,然后根据 iOS 和 web 截图验证结果;对于所报告的半径情况,当 Android 边框颜色保持正确时即表示完成。
由索引模型根据 Issue 内容生成。
评估
- 技术栈
- android, react-native
- 领域
- mobile
- Issue 类型
- 缺陷
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 活跃度
- 停滞
- 描述清晰度
- 基本清楚
- 新手友好度
- 35/100