Bug: TextInput with multiline and lineHeight has height issue when controlled
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描述
Description
I'm experiencing a bug with the TextInput component when using it as a controlled component with both multiline and lineHeight properties. This issue occurs only on iOS; it does not occur on Android.
Expected Behavior:
The TextInput should adjust its height according to the content without any unexpected changes.
Actual Behavior:
On iOS, when the TextInput is controlled, the height of the TextInput increases unexpectedly as the number of lines increases.
This issue does not occur when the TextInput is uncontrolled.
Steps to reproduce
- Create a TextInput component with the following properties:
- multiline={true}
- lineHeight set to a specific value (e.g., 60)
- Controlled by a state variable (value and onChangeText props).
- Type text into the TextInput to increase the number of lines.
React Native Version
0.75.2
I have confirmed that this issue does not occur in version 0.73.2.
Affected Platforms
Runtime - iOS
Output of npx react-native info
System:
OS: macOS 14.4
CPU: (8) arm64 Apple M1 Pro
Memory: 236.09 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 20.12.2
path: ~/.nvm/versions/node/v20.12.2/bin/node
Yarn:
version: 1.22.22
path: ~/.nvm/versions/node/v20.12.2/bin/yarn
npm:
version: 10.5.0
path: ~/.nvm/versions/node/v20.12.2/bin/npm
Watchman:
version: 2024.07.15.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.15.2
path: /opt/homebrew/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 23.4
- iOS 17.4
- macOS 14.4
- tvOS 17.4
- visionOS 1.1
- watchOS 10.4
Android SDK: Not Found
IDEs:
Android Studio: 2024.1 AI-241.18034.62.2411.12071903
Xcode:
version: 15.3/15E204a
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.12
path: /usr/bin/javac
Ruby:
version: 2.6.10
path: /usr/bin/ruby
npmPackages:
"@react-native-community/cli": Not Found
react: Not Found
react-native: Not Found
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: Not found
newArchEnabled: Not found
iOS:
hermesEnabled: Not found
newArchEnabled: Not found
Stacktrace or Logs
-
Reproducer
https://snack.expo.dev/@holyunwoo/eager-indigo-cereal?platform=ios
Screenshots and Videos
Uncontrolled
https://github.com/user-attachments/assets/7c359007-c157-4e68-814d-45a60c97239d
Controlled
https://github.com/user-attachments/assets/1cf5a2e8-0cc7-4a81-bb6d-4b9ae0741e1b
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
从链接的 Snack 复现示例和 TextInput 入口开始,在 iOS 上测试 multiline、lineHeight 以及受控的 value/onChangeText 行为。比较 React Native 0.75.2 与 0.73.2 中的高度变化;完成的标准是,随着行数增加,受控和非受控输入都保持预期的基于内容的高度,且不影响 Android 行为。
由索引模型根据 Issue 内容生成。
评估
- 技术栈
- 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