VSCode点击“Start without debugging”无法运行Flutter项目求助

问题背景 #

此前可正常通过VSCode运行Flutter项目，数月未使用后，无论是旧项目还是新建的默认计数器项目，点击main.dart中的Start without debugging按钮时，VSCode底部仅短暂显示"Starting debug session..."提示后无反应，项目无法运行。问题窗口、输出窗口、调试控制台及终端均无报错，但在VSCode终端执行flutter run命令可正常运行项目。已正确配置Windows环境变量Path指向flutter/bin，网络正常。该问题在两台Windows设备（台式机Flutter 3.22.2、笔记本Flutter 3.16.5）上均出现。

当前VSCode settings.json配置 #

{
   "workbench.startupEditor": "none",
   "github.gitAuthentication": false,
   "editor.mouseWheelZoom": true,
   "editor.wordWrapColumn": 90,
   "editor.formatOnSave": true,
   "editor.fontFamily": "\"JetBrains Mono\", \"Consolas\", \"Courier New\", monospace",
   "editor.fontLigatures": "calt",
   // "editor.fontSize": 11.5, // editor font 크기(JetBrains mono)
   "editor.fontSize": 12.2, // editor font 크기(JetBrains mono)
   "editor.tabSize": 3,
   "editor.guides.bracketPairs": true,
   "editor.suggestSelection": "first",
   "editor.bracketPairColorization.enabled": true, // 괄호별 색상 적용 
   "editor.inlineSuggest.enabled": true,
   "editor.stickyScroll.enabled": true,
   "editor.linkedEditing": true,
   "editor.codeActionsOnSave": {
      "source.fixAll": "explicit"
   },
   "editor.language.colorizedBracketPairs": [],
   // "editor.renameOnType": true,
   "vsintellicode.modify.editor.suggestSelection": "automaticallyOverrodeDefaultValue",
   "files.autoGuessEncoding": true,
   "workbench.editor.highlightModifiedTabs": true, // 파일 수정시 탭 색상 변경
   "workbench.colorCustomizations": {
      "tab.activeBackground": "#F0FFFF"
      // "tab.activeBackground": "#FAFAD2"
   },
   "[dart]": {
      "editor.formatOnSave": true,
      "editor.formatOnType": true,
      "editor.rulers": [
         90
      ],
      "editor.selectionHighlight": true,
      "editor.suggest.snippetsPreventQuickSuggestions": false,
      "editor.suggestSelection": "first",
      "editor.tabCompletion": "onlySnippets",
      "editor.wordBasedSuggestions": "off",
   },
   "dart.warnWhenEditingFilesOutsideWorkspace": false,
   "dart.renameFilesWithClasses": "prompt",
   "dart.previewFlutterUiGuides": true,
   "dart.previewFlutterUiGuidesCustomTracking": true,
   "dart.openDevTools": "flutter",
   "dart-data-class-generator.useEquatable": true,
   "workbench.colorTheme": "Default Light Modern",
   "redhat.telemetry.enabled": true,
   "vs-kubernetes": {
      "vs-kubernetes.minikube-show-information-expiration": "2023-12-25T04:51:22.688Z"
   },
   "dart.debugExternalPackageLibraries": true,
   "dart.debugSdkLibraries": false,
   "dart.flutterHotReloadOnSave": "allIfDirty",
   "git.openRepositoryInParentFolders": "never",
   "dart.shareDevToolsWithFlutter": true,
} 

排查方向 #

• 检查并更新VSCode的Dart/Flutter插件：更新到最新稳定版，若仍有问题，尝试回退到之前能正常工作的版本，插件更新可能引入兼容性冲突。
• 重置Dart相关配置：备份当前settings.json后，删除所有dart.开头的配置项，重启VSCode测试是否恢复正常。
• 检查调试配置文件：查看项目根目录.vscode/launch.json是否存在异常，若无则生成默认Flutter调试配置（通过调试面板的"create a launch.json file"选择Flutter模板）。
• 验证Flutter SDK完整性：执行flutter doctor -v排查是否存在调试相关的依赖缺失或配置问题，即使flutter run正常，也可能影响调试启动。
• 确认VSCode终端环境：设置VSCode默认终端为系统原生Shell（PowerShell或Command Prompt），避免第三方终端导致环境变量传递异常。
• 排查插件冲突：暂时禁用除Dart/Flutter外的所有插件，测试是否能正常启动项目，逐步恢复插件定位冲突源。
• 清理VSCode缓存：删除Windows下的VSCode缓存目录（%APPDATA%\Code\Cache和%APPDATA%\Code\CachedData），重启后测试。
• 检查运行权限：以管理员权限启动VSCode，避免调试进程因权限不足无法正常启动。

内容的提问来源于stack exchange，提问作者Jsmile