flutter常用命令及问题

检测

• 检测当前版本
  flutter doctor -v

• 检测环境
  flutter doctor

• 查看连接设备
  flutter devices

分支

• 查看当前分支
  flutter channel

• 切换分支
  flutter channel master

• 更新当前分支SDK
  flutter upgrade

配置

• 查看配置
  flutter config

• 设置启用配置
  flutter config <配置选项>
  例如：flutter config --enable-windows-desktop，配置选项是根据flutter config查看出来的选项列表。

创建项目

• 指定项目名称和包名，创建全平台工程
  flutter create <项目名称> --org <应用Id>
  例如：flutter create flutter_test --org com.example.flutter

运行应用

• 直接运行
  flutter run

• 运行release
  flutter run --release

• 在指定设备运行
  flutter run -d <设备名称>
  设备名称是通过flutter devices查出来的设备。
  

• 在浏览器运行
  flutter run -d chrome

• 在macos上运行
  flutter run -d macos

常见问题

web sdk下载超时
当设置支持了web平台的时候，运行flutter run，下载web sdk超时。

renzhongruideMacBook-Pro:all_platform_app renzhongrui$ flutter run
Downloading Web SDK...                                              6.5s
Downloading CanvasKit...                                           75.0s
Downloading CanvasKit...                                          75.5s⣄
Failed to download
https://chrome-infra-packages.appspot.com/dl/flutter/web/canvaskit_bundle/+/4PosNK
iHa3EaBK4alMD4idrKYxAk0I0QiRVDDQplhOYC. Ensure you have network connectivity and
then try again. SocketException: Operation timed out (OS Error: Operation timed out, errno = 60),
address = chrome-infra-packages.appspot.com, port = 59334

mac本设置export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn，再次执行flutter run。

renzhongruideMacBook-Pro:all_platform_app renzhongrui$ export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
renzhongruideMacBook-Pro:all_platform_app renzhongrui$ flutter run
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure
you trust this source!