TextInput callbacks inconsistent order of onSelectionChange and onChange/onChangeText
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Description
Description
The order remains constant for almost every circumstance:
onChange -> onChangeText -> onSelectionChange
Here are some cases that i discovered in iOS (could be more)
- For the multiline textinput, for the first keypress onSelectionChange fires first, but for later key presses onChangeText/onChange fire first
- Selecting and deleting a word also deletes a space to the left of it, but in this case onSelectionChange fires first
Steps to reproduce
Snack
In textInput component, use multiline and console.log as callbacks for each of the functions in discussion, see the output
React Native Version
0.74.84
Affected Platforms
Runtime - iOS
Output of npx react-native info
System:
OS: macOS 14.5
CPU: (8) x64 Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Memory: 33.76 MB / 16.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 21.7.3
path: ~/.nvm/versions/node/v21.7.3/bin/node
Yarn: Not Found
npm:
version: 10.5.0
path: ~/.nvm/versions/node/v21.7.3/bin/npm
Watchman:
version: 2024.05.06.00
path: /usr/local/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: Not Found
IDEs:
Android Studio: 2023.2 AI-232.10300.40.2321.11668458
Xcode:
version: 15.4/15F31d
path: /usr/bin/xcodebuild
Languages:
Java:
version: 20.0.1
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: 0.74.2
wanted: 0.74.2
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: false
iOS:
hermesEnabled: true
newArchEnabled: false
Stacktrace or Logs
selection triggered {"end":1,"start":1}
change triggered
change text triggered H
change triggered
change text triggered i
selection triggered {"end":1,"start":1}
Reproducer
https://snack.expo.dev/zhVuXAjkAi5BMHVKq__vG
Screenshots and Videos
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the linked Snack and the React Native TextInput component on iOS, reproducing the logged order for multiline input, typing, and word deletion. Done means the callback ordering is consistent across the reported cases and the behavior is covered by an appropriate regression check.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- ios, react-native
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100