main function
Implementation
void main() async {
final SharedPreferences prefs = await SharedPreferences.getInstance();
String appName = prefs.getString("app");
Widget app;
switch(appName) {
case AdvancedApp.NAME:
app = new AdvancedApp();
break;
case HelloWorldApp.NAME:
app = new HelloWorldApp();
break;
default:
app = HomeApp();
break;
}
runApp(app);
}