Mac安装Flutter就不多说了，本文主要针对集成时候遇到的问题
1.cocoapods
网上看到的大部分文章引入方式为
flutter_application_path = '../my_flutter/'
eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')), binding)
之后执行pod intall。在这一步尝试了不下10次，每次pod install成功执行，但是Flutter并没有引入到工程中来。。。查看官方文档才发现修改了引入方式
flutter_application_path = '../my_flutter/'
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')
install_all_flutter_pods(flutter_application_path)
2.Command PhaseScriptExecution failed with a nonzero exit code
3 pod No podspec found for `Flutter` in `../my_flutter/.ios/Flutter/engine`
cd my_flutter文件夹，终端中执行 flutter run
4.building for is simulator but the linked and embedded framework 'app.framework' was built for ios
1）删除.ios/flutter/app.framework
2) 重新 flutter run 编译运行
