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

我在构建React Native项目时也遇到了同样的问题

Cocoapods版本更新对我有效(从1.8.4升级到1.11.2)

在我的情况下，我不小心导入了dart.js，所以如果它刚刚在重新加载或重新启动时停止工作，请检查您的导入

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:

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。

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