Flutter 安装踩坑记录 HTTP host https://pub.dev/ is not reachable.

Flutter安装踩坑记录

• • 安装Flutter SDK
  • 参考链接

安装Flutter SDK

1. windows安装
   flutter官网下载flutter sdk包

解压到C盘除去program file相关的目录（最好自己创建一个新的目录，因为放在program file等目录需要特殊的权限，会出现问题）

2. Android 需要安装Android SDK ，同理苹果开发也需要对应的环境

3. 安装ide工具（Android Studio ，visual studio code）都可以

4. 运行 flutter doctor检查安装环境

PS C:\Android\flutter\bin> flutter doctorDoctor summary (to see all details, run flutter doctor -v):[√] Flutter (Channel stable, 2.10.5, on Microsoft Windows [Version 10.0.19042.1645], locale en-US)[!] Android toolchain - develop for Android devices (Android SDK version 30.0.0-preview)    X cmdline-tools component is missing      Run `path/to/sdkmanager --install "cmdline-tools;latest"`      See https://developer.android.com/studio/command-line for more details.    X Android license status unknown.      Run `flutter doctor --android-licenses` to accept the SDK licenses.      See Https://flutter.dev/docs/get-started/install/windows#android-setup for more details.[√] Chrome - develop for the WEB[!] Visual Studio - develop for Windows (Visual Studio Enterprise 2022 17.1.0)    X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop      development with c++" workload, and include these components:        MSVC v142 - VS 2019 C++ x64/x86 build tools         - If there are multiple build tool versions available, install the latest        C++ CMake tools for Windows        Windows 10 SDK[√] Android Studio (version 2021.1)[√] VS Code, 64-bit edition (version 1.66.1)[√] Connected device (3 available)[!] HTTP Host Availability    X HTTP host https://Maven.Google.com/ is not reachable. Reason: An error occurred while checking the HTTP host:      Failed host lookup: 'maven.google.com'    X HTTP host https://pub.dev/ is not reachable. Reason: An error occurred while checking the HTTP host: Failed host      lookup: 'pub.dev'    X HTTP host https://cloud.google.com/ is not reachable. Reason: An error occurred while checking the HTTP host:      Failed host lookup: 'cloud.google.com'! Doctor found issues in 3 categories.

提示错误
-Waiting for another flutter command to release the startup lock...
- 看到任务管理器里面有9个dart服务在运行，因此删除不了 flutter 安装目录下的bin/cache/lockfile文件，可以使用下面的命令停止dart服务的运行

// linuxkillall -9 dart// Windowstaskkill /F /IM dart.exe

C:\WINDOWS\system32>taskkill /F /IM dart.exeSUCCESS: The process "dart.exe" with PID 58904 has been terminated.SUCCESS: The process "dart.exe" with PID 59660 has been terminated.SUCCESS: The process "dart.exe" with PID 64856 has been terminated.SUCCESS: The process "dart.exe" with PID 64820 has been terminated.SUCCESS: The process "dart.exe" with PID 69264 has been terminated.SUCCESS: The process "dart.exe" with PID 65924 has been terminated.SUCCESS: The process "dart.exe" with PID 61544 has been terminated.SUCCESS: The process "dart.exe" with PID 68612 has been terminated.SUCCESS: The process "dart.exe" with PID 66868 has been terminated.SUCCESS: The process "dart.exe" with PID 55608 has been terminated.SUCCESS: The process "dart.exe" with PID 67136 has been terminated.SUCCESS: The process "dart.exe" with PID 73776 has been terminated.

• HTTP host https://maven.google.com/ is not reachable. Reason: An error occurred while checking the HTTP host: Failed host lookup: 'maven.google.com'
  - 替换flutter\packages\flutter_tools\lib\src\http_host_validator.dart 目录下的 'maven.google.com'为'https://dl.google.com/dl/android/maven2/'
  - 关闭所有命令行窗口，再打开命令行窗口
  - 去到flutter\bin目录，删除cache文件夹
  - 重新运行flutter doctor

Could not resolve URL "https://pub.flutter-io.cn".pub get failed (server unavailable) -- attempting retry

powershell中运行

setx PUB_HOSTED_URL "https://pub.flutter-io.cn"setx FLUTTER_STORAGE_BASE_URL "https://storage.flutter-io.cn"

参考链接

如何解决“Waiting for another flutter command to …”
[转]Windows构建Flutter环境，无法访问maven.google.com
Step by step setting up flutter and pub mirrors in china using Windows Operating System #46641
【flutter】pub get failed (server unavailable) – attempting解决办法
vscode 安装flutter遇到的坑

来源地址：https://blog.csdn.net/qq_25482087/article/details/124523474