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

您所需要做的就是取消下面这一行的注释

# platform :ios, '8.0'

OR

# platform :ios, '9.0'

等等……

然后打开终端的iOS文件夹，传递这些命令:

% pod repo update
% pod install

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

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

首先将部署更改为您所选择的:例如'11.0' 并将此步骤添加到pod文件的最后

end
post_install do |installer|
 installer.pods_project.targets.each do |target|
  target.build_configurations.each do |config|
   config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '11.0'
  end
 end
end

对我有用:

rm ios/Podfile
flutter pub upgrade
flutter pub get
cd ios && pod update
flutter clean && flutter run
sudo arch -x86_64 gem install ffi
arch -x86_64 pod install