imagini/web_native/lib/screens/splash_screen.dart

import 'package:flutter/material.dart';
import 'package:flutter_platform_widgets/flutter_platform_widgets.dart';
import 'package:fluro/fluro.dart';

import 'package:imagini/core/app_provider.dart';
import 'package:imagini/blocs/splash_bloc.dart';
import 'package:imagini/graphql/imagini_graphql.dart';

class SplashScreen extends StatefulWidget {
  static const String PATH = '/';

  SplashScreen({Key key}) : super(key: key);

  @override
  _SplashScreenState createState() => _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen> {

  SplashBloc bloc;

  @override
  void dispose() {
    super.dispose();
    bloc.dispose();
  }

  @override
  Widget build(BuildContext context) {
    _init();

    return Scaffold(
      body: Center(
        child: ConstrainedBox(
          constraints: BoxConstraints(maxWidth: 500),
          child: Container(
            margin: EdgeInsets.fromLTRB(50, 0, 50, 0),
            height: 270,
            child: Column(
              children: <Widget>[
                Container(
                  child: FittedBox(
                    fit: BoxFit.contain,
                    child: const FlutterLogo(),
                  ),
                  width: 175,
                  margin: EdgeInsets.fromLTRB(0, 0, 0, 50),
                ),
                PlatformCircularProgressIndicator()
              ],
            ),
          ),
        ),
      ),
    );
  }

  void _init(){
    if(null == bloc){
      bloc = SplashBloc(AppProvider.getApplication(context));
      bloc.loginResult.listen((Login$Query$AuthResponse lr) {
        if (lr.result == AuthResult.success) {
          AppProvider.getRouter(context).navigateTo(context, "/Home", transition: TransitionType.fadeIn);
        } else {
          AppProvider.getRouter(context).navigateTo(context, "/Login", transition: TransitionType.fadeIn);
        }
      });
    }
  }
}