zadanie flutter

import 'package:flutter/material.dart';
import 'login_screen.dart';

class SplashScreen extends StatefulWidget {
  const SplashScreen({Key? key}) : super(key: key);

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

class _SplashScreenState extends State<SplashScreen> with SingleTickerProviderStateMixin {
  late AnimationController _controller;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      duration: const Duration(seconds: 3),
      vsync: this,
    )..forward();

    Future.delayed(const Duration(seconds: 3), () {
      Navigator.of(context).pushReplacement(
        MaterialPageRoute(builder: (context) => const LoginScreen()),
      );
    });
  }

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: FadeTransition(
          opacity: _controller,
          child: const Text(
            'Always on Sport',
            style: TextStyle(fontSize: 32, fontWeight: FontWeight.bold),
          ),
        ),
      ),
    );
  }
}