Answers for "flutter run android"

flutter create command

flutter create --org com.yourdomain your_app_name

flutter create project command

flutter create --androidx -t app --org com.companyname.packagename -a kotlin -i swift myapp

flutter runApp

void runApp(Widget app) {
  WidgetsFlutterBinding.ensureInitialized()
    ..scheduleAttachRootWidget(app)
    ..scheduleWarmUpFrame();
}