react / react/react-native

multiline TextInput does not render value properly with newline characters

Aperta
#42,143 6 commenti 4 reazioni 0 assegnatari Vedi su GitHub

Nessuno ha ancora preso questa issue.

Component: TextInput Issue: Author Provided Repro
Lingua principale
C++
Stelle
127k
Fork
25.3k
Merge medio
1g 23h
PR unite (30g)
4

Descrizione

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)

Guida per i contributori

Apri la guida per i contributori

Come iniziare

  1. Leggi tutta la issue e poi la guida ai contributi del progetto.
  2. Commenta sulla issue per dire che te ne occupi tu — evita che due persone facciano lo stesso lavoro.
  3. Fai un fork del repository e lavora su un branch.
  4. Apri una pull request che faccia riferimento al numero della issue.

Direzione di ricerca

Inizia eseguendo il riproduttore TextInputBug collegato con i comandi yarn, pod install e iOS indicati. Analizza l’interazione su iOS tra un TextInput multilinea senza stile, i caratteri di nuova riga e un SafeAreaView padre, usando alignSelf: "flex-start" come confronto. Il lavoro è completato quando il valore completo viene visualizzato prima di toccare l’input senza dipendere da questo workaround.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Valutazione

Stack tecnologico
react-native
Ambito
mobile
Tipo di issue
Bug
Difficoltà
4/5
Tempo stimato
3-5 giorni
Stato di attività
Ferma
Chiarezza
Abbastanza chiara
Idoneità per principianti
42/100

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