splashscreen.dart

import 'dart:core';
import 'dart:async';
import 'package:flutter/material.dart';

class SplashScreen extends StatefulWidget {
  final dynamic navigateAfterFuture;
  SplashScreen({this.navigateAfterFuture});

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

class _SplashScreenState extends State<SplashScreen> {
  @override
  void initState() {
    super.initState();

    load();
  }

  load() async {
    var newWidget = await widget.navigateAfterFuture();

    // Show loader additional 2 seconds
    Timer(
      Duration(seconds: 1),
        () {
          Navigator.of(context).pushReplacement(new MaterialPageRoute(builder: (BuildContext context) => newWidget));
        }
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: new InkWell(
        child:new Stack(
          fit: StackFit.expand,
          children: <Widget>[
            new Container(
              decoration: new BoxDecoration(
                color: Color(0xFFd51d32),
              ),
            ),
            new Column(
              mainAxisAlignment: MainAxisAlignment.start,
              children: <Widget>[
                new Expanded(
                  flex: 2,
                  child: new Container(
                      child: new Image.asset('assets/images/vereign_logo_text.png'),
                      padding: EdgeInsets.all(40)
                  ),
                ),
                Expanded(
                  flex: 1,
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: <Widget>[

                      CircularProgressIndicator(
                        valueColor: new AlwaysStoppedAnimation<Color>(Colors.white),
                      ),
                      Padding(
                        padding: const EdgeInsets.only(top: 20.0),
                      ),
                      new Text('Loading', style: new TextStyle(
                          color: Colors.white
                      ))
                    ],
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}