当我使用 'flutter_barcode_scanner: ^1.0.1' 时 Flutter 'Error running pod install'

Question

当我尝试运行我的颤振项目时，我得到：

运行 pod install 时出错

我试过了：

• 扑干净
• 颤振升级

flutter doctor 一切都好

iOS/Podfile：平台：ios，'9.0'

如果我在 pubspec.yaml 中删除 'flutter_barcode_scanner: ^1.0.1' 它会起作用，所以我认为问题来自 'flutter_barcode_scanner: ^1.0.1'

颤动运行：

Launching lib/main.dart on iPhone1 in debug mode...
Automatically signing iOS for device deployment using specified development team in Xcode project: 7CQFF4JBHQ
Running pod install...
CocoaPods' output:
↳
  Preparing

Analyzing dependencies

Inspecting targets to integrate
  Using `ARCHS` setting to build architectures of target `Pods-Runner`: (``)

Fetching external sources
-> Fetching podspec for `Flutter` from `Flutter`
-> Fetching podspec for `flutter_barcode_scanner` from `.symlinks/plugins/flutter_barcode_scanner/ios`
-> Fetching podspec for `path_provider_linux` from `.symlinks/plugins/path_provider_linux/ios`
-> Fetching podspec for `shared_preferences` from `.symlinks/plugins/shared_preferences/ios`
-> Fetching podspec for `shared_preferences_linux` from `.symlinks/plugins/shared_preferences_linux/ios`
-> Fetching podspec for `shared_preferences_macos` from `.symlinks/plugins/shared_preferences_macos/ios`
-> Fetching podspec for `shared_preferences_web` from `.symlinks/plugins/shared_preferences_web/ios`

Resolving dependencies of `Podfile`
  CDN: trunk Relative path: CocoaPods-version.yml exists! Returning local because checking is only perfomed in repo update
[!] CocoaPods could not find compatible versions for pod "flutter_barcode_scanner":
  In Podfile:
    flutter_barcode_scanner (from `.symlinks/plugins/flutter_barcode_scanner/ios`)

Specs satisfying the `flutter_barcode_scanner (from `.symlinks/plugins/flutter_barcode_scanner/ios`)` dependency were found, but they required a higher minimum deployment target.

/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:328:in `raise_error_unless_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:310:in `block in unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `tap'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:308:in `unwind_for_conflict'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:684:in `attempt_to_activate'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:254:in `process_topmost_state'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolution.rb:182:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/molinillo-0.6.6/lib/molinillo/resolver.rb:43:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/resolver.rb:94:in `resolve'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:1065:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:1063:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:410:in `analyze'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:235:in `block in resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/user_interface.rb:64:in `section'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:234:in `resolve_dependencies'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/installer.rb:156:in `install!'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/command/install.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/lib/cocoapods/command.rb:52:in `run'
/Library/Ruby/Gems/2.6.0/gems/cocoapods-1.9.3/bin/pod:55:in `<top (required)>'
/usr/local/bin/pod:23:in `load'
/usr/local/bin/pod:23:in `<main>'

Error output from CocoaPods:
↳

[!] Automatically assigning platform `iOS` with version `8.0` on target `Runner` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

Exception: Error running pod install

pubspec.yaml

version: 1.0.0+1

environment:
  sdk: ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  shared_preferences: ^0.5.8
  http: ^0.12.2
  flutter_barcode_scanner: ^1.0.1

  cupertino_icons: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter

Answer 1

该插件要求您将 ios 部署目标设置为 11

来自插件的文档

iOS - 需要 Swift 支持

部署目标：11

要解决此问题，请在 ios/Podfile 打开您的 Podfile 并将部署目标更改为 11。

将Podfile 的第二行从

# platform :ios, '9.0'

到

platform :ios, '11.0'

确保它没有被评论，即行前没有#

Answer 2

在 Flutter 项目中，我也遇到过这个问题。通过执行这些步骤修复， （仅供参考-我使用了flutter_barcode_scanner：^2.0.0）

第一步：- 运行这个命令

flutter clean
rm -Rf ios/Pods
rm -Rf ios/.symlinks
rm -Rf ios/Flutter/Flutter.framework
rm -Rf ios/Flutter/Flutter.podspec
flutter pub get

这可以手动完成，进入 ios/Podfile 并删除 Pods、Podfile 和 Podfile.lock。然后运行flutter pub get

第二步：- 使用代码编辑器，在 ios/Podfile 打开您的 Podfile 并更改 # platform :ios, '9.0' 到 platform :ios, '12.0'

第三步：- 运行此命令

cd ios
pod install
cd ..

第四步：- 在 Xcode 中打开您的项目并将 iOS 部署目标更改为 12.1

第五步：-

最后一步：- 现在你可以运行 flutter build ios 或 flutter run

Answer 3

更新： 设置部署目标：12

platform :ios, '12.0'