Xcode > Runner >信息部署目标> IOS部署目标:11 ．

开放终端:

pod cache clean --all

.

pod update

您可以设置您的podfile自动匹配所有podfile的部署目标到您当前的项目部署目标，如下所示:

post_install do |installer|
 installer.pods_project.targets.each do |target|
  target.build_configurations.each do |config|
   config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '9.0'
  end
 end
end

这是我用Firebase 10.1和Xcode 14.1解决这个问题的方法:

打开Xcode 选择Product > Analyze，得到所有IPHONEOS_DEPLOYMENT_TARGET警告信息 打开终端，在你的项目目录:

Pod缓存清理-所有&& Pod分解&& Pod安装-回购-更新

再次检查Xcode。所有的警告都应该消失，Xcode的一个警告应该出现:“更新到推荐设置” 单击Perform Changes按钮 重启Xcode

在Firebase项目存储库中对此有详细的讨论。

Xcode > Runner >信息部署目标> IOS部署目标:11 ．

开放终端:

pod cache clean --all

.

pod update

迭代Tao-Nhan Nguyen的答案，计算每个pod的原始值集，只在它不大于8.0时调整它……在Podfile中添加以下内容:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      if Gem::Version.new('8.0') > Gem::Version.new(config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'])
        config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '8.0'
      end
    end
  end
end

我们可以将项目部署目标应用于所有pods目标。 通过在Podfile的末尾添加以下代码块来解决:

post_install do |installer|
  fix_deployment_target(installer)
end

def fix_deployment_target(installer)
  return if !installer
  project = installer.pods_project
  project_deployment_target = project.build_configurations.first.build_settings['IPHONEOS_DEPLOYMENT_TARGET']

  puts "Make sure all pods deployment target is #{project_deployment_target.green}"
  project.targets.each do |target|
    puts "  #{target.name}".blue
    target.build_configurations.each do |config|
      old_target = config.build_settings['IPHONEOS_DEPLOYMENT_TARGET']
      new_target = project_deployment_target
      next if old_target == new_target
      puts "    #{config.name}: #{old_target.yellow} -> #{new_target.green}"
      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = new_target
    end
  end
end

结果记录: