react / react/react-native

Uncontrolled input value clears when color is changed

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Issue: Author Provided Repro
Dominant language
C++
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Description

Setting color in style prop for an uncontrolled input based on focus clears the TextInput's value.
example:

...
    <TextInput
      onBlur={onBlur}
      onFocus={onFocus}
      placeholder={placeholder}
      style={[
        {
          color: isFocused ? "#f00" : "#000",
        },
      ]}
    />
...

isFocused is set based on onBlur and onFocus.

This same issue is not noticed for a controlled input. I have also linked a repro link with both cases side by side.

Affected platform: Android

Steps to reproduce
  1. Run the application with npx react-native run-android
  2. Interact with controlled input (notice normal behaviour)
  3. Interact with uncontrolled input, notice value of input disappearing when you blur the focus
React Native Version

0.73.5

Affected Platforms

Runtime - Android

Output of npx react-native info
System:
  OS: macOS 14.2.1
  CPU: (10) arm64 Apple M1 Pro
  Memory: 179.17 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 18.19.1
    path: ~/.nvm/versions/node/v18.19.1/bin/node
  Yarn:
    version: 1.22.21
    path: ~/.bun/bin/yarn
  npm:
    version: 10.2.4
    path: ~/.nvm/versions/node/v18.19.1/bin/npm
  Watchman:
    version: 2023.12.04.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.15.2
    path: /opt/homebrew/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 23.2
      - iOS 17.2
      - macOS 14.2
      - tvOS 17.2
      - watchOS 10.2
  Android SDK: Not Found
IDEs:
  Android Studio: 2022.3 AI-223.8836.35.2231.10811636
  Xcode:
    version: 15.1/15C65
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.10
    path: /usr/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: 0.73.5
    wanted: 0.73.5
  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/BalogunofAfrica/react-native-textinput-bug

Screenshots and Videos

https://github.com/facebook/react-native/assets/45393944/91a05b3e-06c1-4ca5-ac39-74d0da2522d7

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked reproducer and run it with npx react-native run-android on React Native 0.73.5. Compare the controlled and uncontrolled TextInput cases while changing the focus-based color; done means the uncontrolled input retains its value after blur and the controlled case remains unaffected.

Written by the indexing model from the issue text.

Assessment

Tech stack
react-native
Domain
mobile
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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