react / react/react-native

`KeyboardAvoidingView` infinitely updates on Android

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API: Keyboard Component: KeyboardAvoidingView Issue: Author Provided Repro Platform: Android Resolution: PR Submitted
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Descrizione

Description

The bottom state of the KeyboardAvoidingView component infinitely updates on Android. This is visible when inspecting KeyboardAvoidingView's state in React Native DevTools, it continuously changes value. Or when a component is rendered just above the keyboard, it flickers and/or bounces up and down.

Steps to reproduce
Prerequisites
  1. App from reproducer repo is built and open. Reproduction 1 is on branch example-1. Reproduction 2 is on branch example-2. For each branch, checkout, yarn install then yarn android.
  2. React Native DevTools is running.
Reproduction 1

Reproduction 1 is a text input and footer fixed to the bottom wrapped in a KeyboardAvoidingView. While the bottom state changes, the change is so small (<1 px) that it is not noticeable in the UI.

Steps
  1. Inspect KeyboardAvoidingView in the React Native DevTools.
  2. Focus on text input in app.
  3. Check bottom state in DevTools.
  4. Unfocus text input in app.
  5. Check bottom state in DevTools.
Expected behaviour

The bottom state should not continuously change.

Actual behaviour

The bottom state continuously changes.

Reproduction 2

Reproduction 2 is the same as reproduction 1 but with two screens to show the effect on the UI as the bottom state change is much larger.

Steps
  1. Focus on text input in the app.
  2. Tap "Go to screen 2".
  3. Inspect Screen2's KeyboardAvoidingView in the React Native DevTools.
Expected behaviour

The bottom state should not continuously change. The footer should not be flickering.

Actual behaviour

The bottom state continuously changes. The footer is flickering.

React Native Version

0.74.2

Affected Platforms

Runtime - Android

Output of npx react-native info
System:
  OS: macOS 14.5
  CPU: (8) arm64 Apple M1
  Memory: 100.70 MB / 16.00 GB
  Shell:
    version: 3.7.0
    path: /opt/homebrew/bin/fish
Binaries:
  Node:
    version: 20.11.1
    path: ~/.local/share/mise/installs/node/20/bin/node
  Yarn:
    version: 3.6.4
    path: ~/.local/share/mise/installs/node/20/bin/yarn
  npm:
    version: 10.2.4
    path: ~/.local/share/mise/installs/node/20/bin/npm
  Watchman:
    version: 2024.01.22.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.5
      - iOS 17.5
      - macOS 14.5
      - tvOS 17.5
      - visionOS 1.2
      - watchOS 10.5
  Android SDK:
    API Levels:
      - "33"
      - "34"
    Build Tools:
      - 29.0.2
      - 30.0.2
      - 30.0.3
      - 31.0.0
      - 33.0.1
      - 34.0.0
    System Images:
      - android-33 | Google APIs ARM 64 v8a
      - android-34 | ARM 64 v8a
      - android-34 | Google Play ARM 64 v8a
    Android NDK: Not Found
IDEs:
  Android Studio: 2023.2 AI-232.10227.8.2321.11479570
  Xcode:
    version: 15.4/15F31d
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.10
    path: /opt/homebrew/opt/openjdk@17/bin/javac
  Ruby:
    version: 2.6.10
    path: /usr/bin/ruby
npmPackages:
  "@react-native-community/cli": Not Found
  react:
    installed: 18.2.0
    wanted: 18.2.0
  react-native:
    installed: 0.74.2
    wanted: 0.74.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: Not found
  newArchEnabled: false
Stacktrace or Logs
N/A
Reproducer

https://github.com/winghouchan/react-native-keyboardavoidingview-infinite-update-mcve

Screenshots and Videos
Reproduction 1

https://github.com/facebook/react-native/assets/6061021/4c89d653-2030-4a65-bf47-8a2ec895fd39

Reproduction 2

https://github.com/facebook/react-native/assets/6061021/43f2a203-232a-425d-a537-91f4f96ea8b5

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 checkout dei branch example-1 e example-2 del reproducer collegato, eseguendo yarn install e yarn android, quindi ispeziona KeyboardAvoidingView in React Native DevTools. Confronta il comportamento su Android mentre metti a fuoco e rimuovi il focus dall’input e navighi a Screen2; il lavoro è completato quando lo stato inferiore rimane stabile e il footer non sfarfalla né rimbalza più.

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

Valutazione

Stack tecnologico
android, 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
35/100

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