[error record] the command line creates an error pub get failed (server unavailable) -- attempting retry 1 in 1 second

Officially recommended Chinese image : https://flutter.dev/community/china

Find the cause of the problem , From Shanghai Jiaotong University Flutter Caused by image failure , Or temporary failure ; ( Anyway, it's useless today )

Shanghai Jiaotong University Linux User GroupFLUTTER_STORAGE_BASE_URL: https://mirrors.sjtug.sjtu.edu.cn/PUB_HOSTED_URL: https://dart-pub.mirrors.sjtug.sjtu.edu.cn/

After using the official image , perform flutter create flutter_cmd Command successfully created application ;

PUB_HOSTED_URL : https://pub.flutter-io.cnFLUTTER_STORAGE_BASE_URL : https://storage.flutter-io.cn

The image needs to be set to the environment variable ;

One 、 Error message

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Create... Using the command line Flutter application , The order is as follows :

flutter create flutter_cmd

Create a Flutter application , The application name is flutter_cmd ;

Error message :

D:\002_Project\002_Android_Learn\Flutter_Cmd>flutter create flutter_cmdCreating project flutter_cmd... androidx: true  flutter_cmd\.gitignore (created)  flutter_cmd\.idea\libraries\Dart_SDK.xml (created)  flutter_cmd\.idea\libraries\Flutter_for_Android.xml (created)  flutter_cmd\.idea\libraries\KotlinJavaRuntime.xml (created)  flutter_cmd\.idea\modules.xml (created)  flutter_cmd\.idea\runConfigurations\main_dart.xml (created)  flutter_cmd\.idea\workspace.xml (created)  flutter_cmd\.metadata (created)  flutter_cmd\android\app\build.gradle (created)  flutter_cmd\android\app\src\main\kotlin\com\example\flutter_cmd\MainActivity.kt (created)  flutter_cmd\android\build.gradle (created)  flutter_cmd\android\flutter_cmd_android.iml (created)  flutter_cmd\android\.gitignore (created)  flutter_cmd\android\app\src\debug\AndroidManifest.xml (created)  flutter_cmd\android\app\src\main\AndroidManifest.xml (created)  flutter_cmd\android\app\src\main\res\drawable\launch_background.xml (created)  flutter_cmd\android\app\src\main\res\mipmap-hdpi\ic_launcher.png (created)  flutter_cmd\android\app\src\main\res\mipmap-mdpi\ic_launcher.png (created)  flutter_cmd\android\app\src\main\res\mipmap-xhdpi\ic_launcher.png (created)  flutter_cmd\android\app\src\main\res\mipmap-xxhdpi\ic_launcher.png (created)  flutter_cmd\android\app\src\main\res\mipmap-xxxhdpi\ic_launcher.png (created)  flutter_cmd\android\app\src\main\res\values\styles.xml (created)  flutter_cmd\android\app\src\profile\AndroidManifest.xml (created)  flutter_cmd\android\gradle\wrapper\gradle-wrapper.properties (created)  flutter_cmd\android\gradle.properties (created)  flutter_cmd\android\settings.gradle (created)  flutter_cmd\ios\Runner\AppDelegate.swift (created)  flutter_cmd\ios\Runner\Runner-Bridging-Header.h (created)  flutter_cmd\ios\Runner.xcodeproj\project.pbxproj (created)  flutter_cmd\ios\Runner.xcodeproj\xcshareddata\xcschemes\Runner.xcscheme (created)  flutter_cmd\ios\.gitignore (created)  flutter_cmd\ios\Flutter\AppFrameworkInfo.plist (created)  flutter_cmd\ios\Flutter\Debug.xcconfig (created)  flutter_cmd\ios\Flutter\Release.xcconfig (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\Contents.json (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\AppIcon.appiconset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\LaunchImage.imageset\Contents.json (created)  flutter_cmd\ios\Runner\Assets.xcassets\LaunchImage.imageset\LaunchImage.png (created)  flutter_cmd\ios\Runner\Assets.xcassets\LaunchImage.imageset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\LaunchImage.imageset\[e-mail] (created)  flutter_cmd\ios\Runner\Assets.xcassets\LaunchImage.imageset\README.md (created)  flutter_cmd\ios\Runner\Base.lproj\LaunchScreen.storyboard (created)  flutter_cmd\ios\Runner\Base.lproj\Main.storyboard (created)  flutter_cmd\ios\Runner\Info.plist (created)  flutter_cmd\ios\Runner.xcodeproj\project.xcworkspace\contents.xcworkspacedata (created)  flutter_cmd\ios\Runner.xcworkspace\contents.xcworkspacedata (created)  flutter_cmd\lib\main.dart (created)  flutter_cmd\flutter_cmd.iml (created)  flutter_cmd\pubspec.yaml (created)  flutter_cmd\README.md (created)  flutter_cmd\test\widget_test.dart (created)Because flutter_cmd depends on cupertino_icons any which doesn't exist (could not find package cupertino_icons at https://storage.flutter-io.cn), version solving failed.pub get failed (server unavailable) -- attempting retry 1 in 1 second...Because flutter_cmd depends on cupertino_icons any which doesn't exist (could not find package cupertino_icons at https://storage.flutter-io.cn), version solving failed.pub get failed (server unavailable) -- attempting retry 2 in 2 seconds...Because flutter_cmd depends on cupertino_icons any which doesn't exist (could not find package cupertino_icons at https://storage.flutter-io.cn), version solving failed.pub get failed (server unavailable) -- attempting retry 3 in 4 seconds...Because flutter_cmd depends on cupertino_icons any which doesn't exist (could not find package cupertino_icons at https://storage.flutter-io.cn), version solving failed.pub get failed (server unavailable) -- attempting retry 4 in 8 seconds...Running "flutter pub get" in flutter_cmd...                            | Terminate the batch operation (Y/N)? yD:\002_Project\002_Android_Learn\Flutter_Cmd>

Two 、 Solution

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Flutter The two sources of have no set pair , I met this problem before , It is also caused by source failure ;

【 Error log 】Flutter Report errors Downloading the Dart SDK using the BITS service failed, retrying with WebRequest…

Use the source of the official Chinese community , You can complete the command line creation ;

PUB_HOSTED_URL : https://pub.flutter-io.cnFLUTTER_STORAGE_BASE_URL : https://storage.flutter-io.cn