149 lines
4.5 KiB
Dart
149 lines
4.5 KiB
Dart
import 'package:flutter/material.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/theme/app_text_styles.dart';
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import '../../../core/theme/app_dimensions.dart';
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/// 启动页面
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class SplashScreen extends StatefulWidget {
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const SplashScreen({super.key});
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@override
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State<SplashScreen> createState() => _SplashScreenState();
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}
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class _SplashScreenState extends State<SplashScreen>
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with SingleTickerProviderStateMixin {
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late AnimationController _animationController;
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late Animation<double> _fadeAnimation;
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late Animation<double> _scaleAnimation;
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@override
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void initState() {
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super.initState();
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_initAnimations();
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_navigateToNext();
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}
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void _initAnimations() {
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_animationController = AnimationController(
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duration: const Duration(milliseconds: 2000),
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vsync: this,
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);
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_fadeAnimation = Tween<double>(
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begin: 0.0,
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end: 1.0,
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).animate(CurvedAnimation(
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parent: _animationController,
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curve: const Interval(0.0, 0.6, curve: Curves.easeIn),
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));
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_scaleAnimation = Tween<double>(
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begin: 0.8,
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end: 1.0,
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).animate(CurvedAnimation(
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parent: _animationController,
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curve: const Interval(0.2, 0.8, curve: Curves.elasticOut),
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));
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_animationController.forward();
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}
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Future<void> _navigateToNext() async {
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await Future.delayed(const Duration(seconds: 3));
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if (mounted) {
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// TODO: 检查用户登录状态，决定跳转到登录页还是主页
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Navigator.of(context).pushReplacementNamed('/login');
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}
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}
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@override
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void dispose() {
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_animationController.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: AppColors.primary,
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body: Center(
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child: AnimatedBuilder(
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animation: _animationController,
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builder: (context, child) {
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return FadeTransition(
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opacity: _fadeAnimation,
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child: ScaleTransition(
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scale: _scaleAnimation,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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// 应用图标
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Container(
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width: AppDimensions.iconXxl * 2,
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height: AppDimensions.iconXxl * 2,
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decoration: BoxDecoration(
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color: AppColors.onPrimary,
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borderRadius: BorderRadius.circular(
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AppDimensions.radiusXl,
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),
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boxShadow: [
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BoxShadow(
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color: AppColors.shadow.withOpacity(0.3),
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blurRadius: 20,
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offset: const Offset(0, 10),
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),
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],
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),
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child: Icon(
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Icons.school,
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size: AppDimensions.iconXxl,
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color: AppColors.primary,
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),
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),
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SizedBox(height: AppDimensions.spacingXl),
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// 应用名称
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Text(
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'AI English Learning',
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style: AppTextStyles.headlineLarge.copyWith(
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color: AppColors.onPrimary,
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fontWeight: FontWeight.bold,
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),
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),
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SizedBox(height: AppDimensions.spacingMd),
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// 副标题
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Text(
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'智能英语学习助手',
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style: AppTextStyles.bodyLarge.copyWith(
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color: AppColors.onPrimary.withOpacity(0.8),
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),
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),
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SizedBox(height: AppDimensions.spacingXxl),
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// 加载指示器
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SizedBox(
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width: 40,
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height: 40,
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child: CircularProgressIndicator(
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valueColor: AlwaysStoppedAnimation<Color>(
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AppColors.onPrimary,
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),
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strokeWidth: 3,
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),
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),
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],
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),
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),
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);
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},
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),
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),
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);
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}
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} |