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onChangeIndex called repeatedly when setState in it. #176

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diamont1001 opened this issue Aug 17, 2023 · 3 comments
Open

onChangeIndex called repeatedly when setState in it. #176

diamont1001 opened this issue Aug 17, 2023 · 3 comments

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@diamont1001
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diamont1001 commented Aug 17, 2023

When calling setState in the onChangeIndex function, it will cause the onChangeIndex function to be called repeatedly. No matter what state is modified by setState.

Platform: Android

React Native version:

System:
  OS: macOS 13.2.1
  CPU: (8) x64 Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
  Memory: 1.62 GB / 16.00 GB
  Shell:
    version: 5.8.1
    path: /bin/zsh
Binaries:
  Node:
    version: 18.16.0
    path: ~/.nvm/versions/node/v18.16.0/bin/node
  Yarn:
    version: 1.22.19
    path: ~/.nvm/versions/node/v18.16.0/bin/yarn
  npm:
    version: 9.6.5
    path: ~/.nvm/versions/node/v18.16.0/bin/npm
  Watchman:
    version: 2023.06.26.00
    path: /usr/local/bin/watchman
Managers:
  CocoaPods:
    version: 1.12.1
    path: /usr/local/bin/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 22.4
      - iOS 16.4
      - macOS 13.3
      - tvOS 16.4
      - watchOS 9.4
  Android SDK:
    API Levels:
      - "25"
      - "27"
      - "28"
      - "29"
      - "31"
      - "33"
      - "34"
    Build Tools:
      - 28.0.3
      - 29.0.3
      - 30.0.3
      - 31.0.0
      - 33.0.0
    System Images:
      - android-29 | Google APIs Intel x86 Atom
      - android-31 | Google APIs Intel x86_64 Atom
      - android-33 | Google APIs Intel x86_64 Atom
      - android-34 | Google APIs Intel x86_64 Atom
    Android NDK: Not Found
IDEs:
  Android Studio: 2022.1 AI-221.6008.13.2211.9619390
  Xcode:
    version: 14.3.1/14E300c
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 11.0.18
    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: 0.72.3
    wanted: 0.72.3
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: false
iOS:
  hermesEnabled: true
  newArchEnabled: false

Steps To Reproduce

  1. SwiperFlatList
  2. this.setState in onChangeIndex

Describe what you expected to happen:

Snack, code example, screenshot, or link to a repository:

    <SwiperFlatList
      ...
      onChangeIndex={({index}) => {
        this.setState({abc: 1})
      }}
    />
@blackwing1228
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I encountered the same problem

@blackwing1228
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@diamont1001
You can try using useCallback to wrap the onChangeIndex event

@diamont1001
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@diamont1001 You can try using useCallback to wrap the onChangeIndex event

Thx, I'm using PaginationComponent and paginationIndex, so there's no need to access index from onChangeIndex now :)

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