Environment configuration is OK, because doctor also reveal all OK, write a flutter on the VSCode project is also OK, want to Android development Studio, two plug-in installed flutter and dart, can flutter new project, create a completed, main. The dart is not identified, plain text, there are flutter in the new project, but there were no dart files, the runtime displays Entrypoint is not a dart file, also don't pick the main under the lib. Dart, reshipment AS many times, reshipment flutter, reinstall the Android SDK, also changed the directory permissions chmod -r 777 *, or no, do bosses have to understand you, my iOS development, not understanding of the AS,
Thank you for your attention