构建目标 MyNotificationService：找不到框架答案

【问题标题】：Build target MyNotificationService: Framework not found构建目标 MyNotificationService：找不到框架
【发布时间】：2021-10-14 23:24:41
【问题描述】：

我有一个 React Native 应用程序“MyApp”，它附加了一个“MyNotificationService”（即，NotificationService.appex 嵌入在目标“MyApp”中的 Frameworks, Libraries and Embedded Content in Xcode 下）。

到目前为止一切都很好。

现在我想在“MyApp”中添加另一个 pod，命名为 pod 'Google-Mobile-Ads-SDK'，这与 MyNotificationService 没有任何关系。我只是想安装它，所以我可以访问“MyApp”中的Google-Mobile-Ads-SDK。

我的 Podfile 看起来像这样

target 'MyApp' do
  
  use_unimodules!
  config = use_native_modules!
  use_react_native!(
    :path => config[:reactNativePath],
    :hermes_enabled => false
  )

  # Additional Dependencies
  ...
  pod 'Google-Mobile-Ads-SDK'
 
  target 'MyNotificationService' do   
    use_native_modules!
    inherit! :complete
  end

  post_install do |installer|
    installer.pods_project.targets.each do |target|
      target.build_configurations.each do |config|
        config.build_settings['APPLICATION_EXTENSION_API_ONLY'] = 'NO'
        # deletes each pods deployment target definition and instead uses the definition of the main project
        config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
      end
    end
  end
end

但是，在我运行 pod install 之后，我尝试使用 XCode 构建 MyApp 的调试版本，但 XCode 报错：

Build Target MyNotificationService
Link MyNotificationService (arm64)

Directory not found for option '-F/Users/.../Library/Developer/Xcode/DerivedData/MyApp-abcabcabcabcabc/Build/Products/Debug-iphoneos/XCFrameworkIntermediates/GoogleAppMeasurement'

Directory not found for option '-F/Users/.../Library/Developer/Xcode/DerivedData/MyApp-abcabcabcabcabc/Build/Products/Debug-iphoneos/XCFrameworkIntermediates/GoogleMobileAds'

Directory not found for option '-F/Users/.../Library/Developer/Xcode/DerivedData/MyApp-abcabcabcabcabc/Build/Products/Debug-iphoneos/XCFrameworkIntermediates/UserMessagingPlatform'

但 MyNotificationService 与 GoogleAppMeasurement、GoogleMobileAds 和 UserMessagingPlatform 这些框架无关 - 它们属于 Google-Mobile-Ads-SDK，只有主要目标 MyApp 需要它们。

我如何告诉MyNotificationService 它不应该关心这些框架？

【问题讨论】：

标签： ios xcode react-native cocoapods ios-app-extension

【解决方案1】：

确实使用抽象目标解决了问题，其中定义了“MyApp”和“MyNotificationService”作为子目标。抽象目标不是一个实际的 Xcode 目标，而是一个占位符或文件夹，它定义了“MyApp”和“MyNotificationService”都应该共享的 pod。要让“MyNotificationService”忽略与“Google-Mobile-Ads-SDK”相关的所有内容，pod 'Google-Mobile-Ads-SDK' 仅在子目标“MyApp”中定义。

abstract_target 'Shared' do
  
  use_unimodules!
  config = use_native_modules!
  use_react_native!(
    :path => config[:reactNativePath],
    # to enable hermes on iOS, change `false` to `true` and then install pods
    :hermes_enabled => false
  )

  # Additional Dependencies
  ...

  target 'MyApp' do
    # no inherit statement means that target MyApp has all pods from the parent "Shared" accessible
    pod 'Google-Mobile-Ads-SDK'
  end

  target 'MyNotificationService' do 
      # no inherit statement means that target MyNotificationService has all pods from the parent "Shared" accessible
    use_native_modules!
  end
 
  post_install do |installer|
    installer.pods_project.targets.each do |target|
      target.build_configurations.each do |config|
        config.build_settings['APPLICATION_EXTENSION_API_ONLY'] = 'NO'
        # deletes each pods deployment target definition and instead uses the definition of the main project
        config.build_settings.delete 'IPHONEOS_DEPLOYMENT_TARGET'
      end
    end
  end
end

【讨论】：