Flutter App Demo，跟着网上教程敲代码的成果，教程 => https://jspang.com/detailed?id=53
A new Flutter project.
This project is a starting point for a Flutter application.
A few resources to get you started if this is your first Flutter project:
For help getting started with Flutter, view our
online documentation, which offers tutorials,
samples, guidance on mobile development, and a full API reference.