Flutter iOS 运行 pod 安装时构建失败

Question

我正在尝试制作一个 flutter 插件，所以我按照 https://flutter.dev/docs/development/packages-and-plugins/developing-packages上提供的步骤创建了一个插件。 当我尝试运行 ios 示例时出现错误。 下面是我在运行 ios 示例应用程序时得到的日志。

谁能帮我这个？

Running pod install...
CocoaPods' output:
    Analyzing dependencies

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

    Fetching external sources
    -> Fetching podspec for `Flutter` from `.symlinks/flutter/ios`
    -> Fetching podspec for `flutter_plugin` from `.symlinks/plugins/flutter_plugin/ios`

    Resolving dependencies of `Podfile`

    Comparing resolved specification to the sandbox manifest
      A Flutter
      A flutter_plugin

    Downloading dependencies

    -> Installing Flutter (1.0.0)

    -> Installing flutter_plugin (0.0.1)
      - Running pre-install hooks
    [!] Unable to determine Swift version for the following pods:

    - `flutter_plugin` does not specify a Swift version and none of the targets (`Runner`) integrating it has the `SWIFT_VERSION` attribute set. Please contact the author or set the `SWIFT_VERSION` attribute in at least one of the targets that integrate this pod.

    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/installer/xcode/target_validator.rb:115:in `verify_swift_pods_swift_version'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/installer/xcode/target_validator.rb:37:in `validate!'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/installer.rb:459:in `validate_targets'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/installer.rb:138:in `install!'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/command/install.rb:48:in `run'
    /Library/Ruby/Gems/2.3.0/gems/claide-1.0.2/lib/claide/command.rb:334:in `run'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/lib/cocoapods/command.rb:52:in `run'
    /Library/Ruby/Gems/2.3.0/gems/cocoapods-1.6.1/bin/pod:55:in `<top (required)>'
    /usr/local/bin/pod:22:in `load'
    /usr/local/bin/pod:22:in `<main>'

Error output from CocoaPods:
        [33mWARNING: CocoaPods requires your terminal to be using UTF-8 encoding.
        Consider adding the following to ~/.profile:
Error running pod install

Answer 1

通过将 flutter 和 CocoaPods 更新到最新版本然后运行以下命令来修复

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

Answer 2

如果您使用的是 Apple Silicon Chip (M1)，则可以执行此操作。

pod cache clean --all
Pod clean
pod deintegrate
sudo gem install cocoapods-deintegrate cocoapods-clean

sudo arch -x86_64 gem install ffi
arch -x86_64 pod repo update
arch -x86_64 pod install

Answer 3

得到了问题。 当我们在终端上通过命令创建插件时，它会为 Android 创建一个默认 Java 和 iOS 的 Objective-C 插件。 可以使用命令将其更改为 Kotlin for Android 和 Swift for iOS，但它将仅添加对根文件夹中的android/和ios/支持。 这不会更改example/目录中的示例代码。 提供的示例仍然是 Java for Android 和 Objective-C for iOS。 然后我从 Android Studio 创建了一个插件，我通过选中“包含 Swift 对 ios 代码的支持”选项创建了对 iOS 的 Swift 支持，它创建了一个使用 swift 而不是 Objective-C 的示例。 那么问题就解决了。

Answer 4

您需要设置 Swift 版本，因为flutter_plugin did not specify a Swift version by default

在你的ios/Podfile添加

config.build_settings['SWIFT_VERSION'] = '4.1'  # required by simple_permission

以下列方式：

target 'Runner' do
  use_frameworks!  # required by simple_permission
  ...
end

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.1'  # required by simple_permission
      config.build_settings['ENABLE_BITCODE'] = 'NO'
    end
  end
end

您还可以查看此github 线程和此stackoverflow 讨论，以了解有关发生这种情况的原因的更多详细信息。

Answer 5

每次将我的项目从一台电脑换到另一台电脑时，我都会遇到这个问题，

我按照这个步骤来解决这个问题，

1.

Delete podfile.lock

2.替换这个

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
  end
end

和

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
    end
    flutter_additional_ios_build_settings(target)
  end
end

3.运行

flutter clean
flutter run

Answer 6

我在项目级别名称 SWIFT-VERSION 上为 Runner 添加了一个用户定义的构建设置。 没有其他东西对我有用。

Answer 7

不要担心。 有一个简单的解决方案。 创建此文件 - AppResources/iOS/Podfile并将其添加到文件中

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings['SWIFT_VERSION'] = '4.0'
     end
   end
end

这就是您项目的 SWIFT_VERSION 已设置。

Answer 8

我也遇到了这个问题。 然后我意识到这是“pod install”的问题。 并在这里找到了解决方案https://github.com/CocoaPods/CocoaPods/issues/10723

sudo arch -x86_64 gem install ffi

并运行：

arch -x86_64 pod install

代替

pod install