react / react/react-native

multiline TextInput does not render value properly with newline characters

Abierto
#42,143 6 comentarios 4 reacciones 0 asignados Ver en GitHub

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Component: TextInput Issue: Author Provided Repro
Lenguaje dominante
C++
Estrellas
127k
Forks
25.3k
Merge medio
1 d 23 h
PR fusionados (30 d)
4

Descripción

Description

Unstyled TextInput in a SafeAreaView has some strange behaviour when it's value prop contains new line characters.
The text seems to clip under the first line break and does not appear before tapping the text input box.

Some considerations:

  • Does not happen for long text that breaks "naturally" (no line breaks)
  • I can't reproduce this using a normal view and not a safe area view
    • Wrapping the text input in a view does not fix the issue as long as there exists a parent SafeAreaView
  • I can't reproduce this in the iOS simulator using Expo Snack (SDK 49.0.0)
  • alignSelf: "flex-start" seems to fix the issue
Steps to reproduce
  1. clone the reproducer repo
  2. install and initialize:
yarn install
cd ios
pod install
  1. run according to docs:
yarn start
yarn run ios
  1. Observe the text clipping after two lines. Tap the text to make the rest of it appear. Reload to make it appear again.
React Native Version

0.73.1

Affected Platforms

Runtime - iOS, Build - MacOS

Output of npx react-native info
System:
  OS: macOS 14.1.1
  CPU: (10) arm64 Apple M1 Pro
  Memory: 3.85 GB / 32.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 18.18.2
    path: ~/.nvm/versions/node/v18.18.2/bin/node
  Yarn:
    version: 1.22.19
    path: ~/.nvm/versions/node/v18.18.2/bin/yarn
  npm:
    version: 9.8.1
    path: ~/.nvm/versions/node/v18.18.2/bin/npm
  Watchman:
    version: 2023.10.09.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.13.0
    path: /opt/homebrew/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: Not Found
  Xcode:
    version: 15.0.1/15A507
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 11.0.12
    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: true
  newArchEnabled: false
iOS:
  hermesEnabled: true
  newArchEnabled: false
Stacktrace or Logs
No relevant stacktrace
Reproducer

https://github.com/HaakonSvane/TextInputBug

Screenshots and Videos

https://github.com/facebook/react-native/assets/36899138/d0caa3ff-425c-4ee5-bf41-49e4e550736b

(I added red background color to the safe area view to better visualize the element size before and after text appears. There seems to be no apparent change)

Guía de contribución

Abrir la guía de contribución

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

Línea de trabajo

Comienza ejecutando el reproductor de TextInputBug enlazado con los comandos de yarn, pod install e iOS indicados. Investiga la interacción en iOS entre un TextInput multilinea sin estilos, los caracteres de nueva línea y un SafeAreaView padre, usando alignSelf: "flex-start" como comparación. Se considera terminado cuando el valor completo se renderiza antes de tocar el input sin depender de ese workaround.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico
react-native
Área
mobile
Tipo de issue
Error
Dificultad
4/5
Tiempo estimado
3-5 días
Estado de actividad
Estancado
Claridad
Bastante claro
Aptitud para principiantes
42/100

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