中文网 ：https://book.flutterchina.club
官方：https://docs.flutter.dev/get-started/install/macos
下载SDK：https://docs.flutter.dev/get-started/install/macos
Android Studio下载：https://developer.android.google.cn/studio
添加flutter相关工具到path中：
更新环境变量
编辑 vim ~/.bash_profile
# >>> flutter init >>>
export PATH=/Users/apple/Desktop/Flutter/flutterSDK/flutter/bin:$PATH
export FLUTTER_ROOT=/Users/apple/Desktop/Flutter/flutterSDK/flutter
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
# >>> flutter init >>>
刷新当前窗口source ~/.bash_profile
验证“flutter/bin”是否已在PATH中：echo $PATH
运行 flutter doctor
