Andorid Studio安装 Flutter插件, 会附带安装Dart插件
新建Flutter工程 File -->New Flutter Project
Flutter项目的名字 只能是小写, 并且用_拼接。
关联Flutter SDK, 如果没有下载的话,可以在这里选择Install SDK...进行下载; 也可以先clone 下来 “git clone -b beta https://github.com/flutter/flutter.git”
git clone -b beta https://github.com/flutter/flutter.git