react / react/react-native

[Android]: append TextInput inside ScrollView doesn't always scroll correctly to the new Item

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#53,449 5 comentarios 0 reacciones 0 asignados Ver en GitHub

Nadie ha tomado este issue todavía.

Component: ScrollView Component: TextInput Needs: Triage :mag: Platform: Android
Lenguaje dominante
C++
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Forks
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Merge medio
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PR fusionados (30 d)
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Descripción

Description

On android only, when user add a new TextInput inside a ScrollView, the scrollview is expected to scroll to the new added TextInput. It doesn't always work on android.

Note: I don't know the exact reproduction conditions, but it seems that the added item should be outside of the visible screen.

Steps to reproduce

Create a sample app with a list of inside a .
You should be able to append a new with a button to reproduce the issue.
When a new is added I expect the ScrollView scroll to the newly added

On android this is randomly working. On iOS, It always works.
I had the issue originally on 0.79, but I reproduce it on a react-native only sample on 0.81.0 (see linked repo)

Here is an extract of JSX code:

      <ScrollView>
        <!-- Append a new TextInput -->
        <Pressable onPress={() => {
          setCount(c => c + 1);
        }}>
          <Text>Press me</Text>
        </Pressable>
        <!-- display a list of textInput -->
        {Array.from({length: count}).map((_, i) => (
          <TextInput
            style={{ height:50 }}
            key={i}
            autoFocus={i === count - 1}>    <!-- ensure only the last item added has autofocus (this is also reproduced if autoFocus={true} )-->
              Item {i + 1}
          </TextInput>
        ))}
      </ScrollView>
React Native Version

0.81.0, but also 0.79.1

Affected Platforms

Runtime - Android

Output of npx @react-native-community/cli info
System:
  OS: macOS 15.0
  CPU: (11) arm64 Apple M3 Pro
  Memory: 102.78 MB / 18.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 20.18.1
    path: ~/.nvm/versions/node/v20.18.1/bin/node
  Yarn:
    version: 1.22.22
    path: /opt/homebrew/bin/yarn
  npm:
    version: 10.8.2
    path: ~/.nvm/versions/node/v20.18.1/bin/npm
  Watchman:
    version: 2025.06.30.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.2
      - iOS 18.2
      - macOS 15.2
      - tvOS 18.2
      - visionOS 2.2
      - watchOS 11.2
  Android SDK:
    API Levels:
      - "28"
      - "33"
      - "34"
      - "35"
      - "36"
    Build Tools:
      - 26.0.3
      - 30.0.3
      - 33.0.0
      - 33.0.1
      - 34.0.0
      - 35.0.0
      - 36.0.0
    System Images:
      - android-30 | Google APIs ARM 64 v8a
      - android-30 | Google Play ARM 64 v8a
      - android-34 | Google APIs ARM 64 v8a
      - android-35 | Google Play ARM 64 v8a
    Android NDK: 26.1.10909125
IDEs:
  Android Studio: 2025.1 AI-251.25410.109.2511.13665796
  Xcode:
    version: 16.2/16C5032a
    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":
    installed: 20.0.0
    wanted: 20.0.0
  react:
    installed: 19.1.0
    wanted: 19.1.0
  react-native:
    installed: 0.81.0
    wanted: 0.81.0
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: false
Stacktrace or Logs
N/A
MANDATORY Reproducer

https://github.com/freeboub/bug-react-native-Append-TextInput-In-ScrollView

Screenshots and Videos

You can see that the last added TextInput doesn't correctly focus on last item:

https://github.com/user-attachments/assets/4b23a365-fe57-4dfb-8862-315f27132d22

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 con el reproducer obligatorio en github.com/freeboub/bug-react-native-Append-TextInput-In-ScrollView y ejecuta en Android 0.81.0 el ejemplo proporcionado de ScrollView, Pressable y TextInput. Compara el comportamiento del foco y del desplazamiento con iOS y determina las condiciones en las que no se alcanza el TextInput recién añadido que está fuera de la pantalla; se considera terminado cuando el comportamiento es fiable y correcto en Android.

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

Evaluación

Stack tecnológico
android, react-native
Área
mobile
Tipo de issue
Error
Dificultad
4/5
Tiempo estimado
3-5 días
Estado de actividad
Activo
Claridad
Bastante claro
Aptitud para principiantes
45/100

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