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:

对于Flutter使用这个

platform :ios, '10.0'

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

简单的解决方案，对我来说在颤振:

删除Podfile和Podfile.lock 运行app:这将创建一个新的Podfile。这可能仍然会失败并报错。 在新的Podfile中，取消注释，并将第二行更改为平台:ios， '12.0'(或其他你想要目标的最小版本) 再次运行应用程序，现在没有错误

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

对于有此问题的cordova开发者

试着设置

<preference name="deployment-target" value="8.0" />

在config . xml

我解决了这个问题，我把build system从New build system改为Legacy build system

在Xcode v10+中，选择文件>项目设置

在之前的Xcode中，选择File > Workspace Settings

将Build System从New Build System更改为Legacy Build System—>单击Done。