Ios 无法为 Flutter 项目构建 ipa [CocoaPods 找不到 pod "GoogleAppMeasurement" 的兼容版本：]

我花了好几天时间在这件事上.我已经try 了许多flatter pub和pod命令，但都不起作用.我还删除了pods文件夹并重新添加了firebase ios sdk.

我一直看到:

  In Podfile:
    firebase_analytics (from `.symlinks/plugins/firebase_analytics/ios`) was resolved to 9.1.12, which depends on
      Firebase/Analytics (= 9.2.0) was resolved to 9.2.0, which depends on
        Firebase/Core (= 9.2.0) was resolved to 9.2.0, which depends on
          FirebaseAnalytics (~> 9.2.0) was resolved to 9.2.0, which depends on
            FirebaseAnalytics/AdIdSupport (= 9.2.0) was resolved to 9.2.0, which depends on
              GoogleAppMeasurement (= 9.2.0)

    google_mobile_ads (from `.symlinks/plugins/google_mobile_ads/ios`) was resolved to 0.0.1, which depends on
      Google-Mobile-Ads-SDK (= 8.13.0) was resolved to 8.13.0, which depends on
        GoogleAppMeasurement (< 9.0, >= 7.0)

所以我绝望了，删除了整个ios文件夹，然后运行flutter create ..它重新生成了所有内容，然后运行flutterfire configure.一切似乎都很好，但我仍然无法构建或运行针对ios的应用程序.我认为xcode保留了一些设置或文件，而pod cache clean甚至没有删除这些设置或文件.我应该在xcode中删除什么？我累了.

播客文件:

platform :ios, '12.0'

# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
ENV['COCOAPODS_DISABLE_STATS'] = 'true'

project 'Runner', {
  'Debug' => :debug,
  'Profile' => :release,
  'Release' => :release,
}

def flutter_root
  generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
  unless File.exist?(generated_xcode_build_settings_path)
    raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
  end

  File.foreach(generated_xcode_build_settings_path) do |line|
    matches = line.match(/FLUTTER_ROOT\=(.*)/)
    return matches[1].strip if matches
  end
  raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
end

require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)

flutter_ios_podfile_setup

target 'Runner' do
  use_frameworks!
  use_modular_headers!

  flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
end

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