利用Flutter做成应用1：环境

flutter

在Windows上搭建Flutter开发环境

如果访问Flutter受到限制，在环境变量中加入下面的变量

export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn

安装Git命令行工具 Git for Windows

获取Flutter SDK

下载
https://docs.flutter.dev/development/tools/sdk/releases https://flutter.cn/docs/development/tools/sdk/releases

将安装包zip解压到你想安装Flutter SDK的路径，在Flutter安装目录的flutter文件下找到flutter_console.bat，双击运行并启动flutter控制台。 如果用cmd启动控制台，需要将flutter\bin对应路径添加到环境变量Path中。

Flutter有三个发布渠道，分别为stable、beta 和 master。 如果已经装好Flutter需要升级的话，使用如下命令。

flutter channel stable
flutter upgrade

如果需要更新pubspec.yaml文件里列出的所有依赖的packages，使用如下命令。

flutter pub upgrade

如果需要自动判断那些过时了的 package 依赖以及获取更新建议，现在你可以使用 outdated 命令。

flutter pub outdated

打开一个新的命令提示符或PowerShell窗口并运行以下命令以查看是否需要安装任何依赖项来完成安装：

flutter doctor

Flutter插件

https://pub.dev/
https://pub.flutter-io.cn/

开发工具

Android Studio

启动Android Studio，安装两个插件（File->Setting->Plugins)

  • Flutter插件： 支持Flutter开发工作流 (运行、调试、热重载等).
  • Dart插件： 提供代码分析 (输入代码时进行验证、代码补全等).

安装Flutter插件时会同时要求安装Dart插件。

Tips

 flutter doctor --android-licenses

Android sdkmanager not found. Update to the latest Android SDK and ensure that the cmdline-tools are installed to resolve this.

flutter config --android-sdk C:\App\Android\android-sdk

Setting “android-sdk” value to “C:\App\Android\android-sdk”. You may need to restart any open editors for them to read new settings.

Error: The proxy server URL extracted from HTTP_PROXY or HTTPS_PROXY environment variable could not be parsed. Either specify the correct URL or unset the environment variable.

set HTTP_PROXY=http://ip:port
set HTTPS_PROXY=http://ip:port
set NO_PROXY=localhost,127.0.0.1,::1
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