missing_dart_library Dart 的开发工具chevron_right Diagnosticschevron_right missing_dart_library Required library '{0}' is missing. Description # The analyzer produces this diagnostic when either the Dart or Flutter SDK isn't installed correctly, and, as a result, one of the dart: libraries can't be found. Common fixes # Reinstall the Dart or Flutter SDK. 本页内容对你有帮助吗？ thumb_up thumb_down 除非另有说明，文档之所提及适用于 Dart 3.9.2 版本，本页面最后更新时间：2025-9-1。查看文档源码 或者 报告页面问题。