export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
export PATH=/Users/hello/flutter/bin:$PATH
#export PATH=PATH_TO_FLUTTER_GIT_DIRECTORY/flutter/bin:$PATH
export ANDROID_HOME=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=/Users/用户名/Documents/flutter/flutter/bin:$PATH
export ANDROID_HOME="/Users/用户名/Documents/android_sdk" //android sdk目录，替换为你自己的即可
export PATH=${PATH}:${ANDROID_HOME}/tools
export PATH=${PATH}:${ANDROID_HOME}/platform-tools
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn运行 flutter doctor
运行以下命令查看是否需要安装其它依赖项来完成安装：
flutter doctor
在Mac上，通过Spotlight或使用以下命令找到模拟器:
open -a Simulator
flutter run
Flutter: New Project
flutter packages get
首先创建一个新的应用程序:
flutter create batterylevel
flutter