Flutter开发时遇坑记录

1. flutter Namespace not specified. Specify a namespace in the module's build file
   这里是解决方案
2. Do not use BuildContexts across async gaps
   解决方案如下

void onButtonTapped(BuildContext context) async {
  await Future.delayed(const Duration(seconds: 1));

  if (!context.mounted) return;
  Navigator.of(context).pop();
}