72 lines
2.1 KiB
Dart
72 lines
2.1 KiB
Dart
import 'package:cupertino_ui/cupertino_ui.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import '../../../core/storage/token_storage.dart';
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import '../../../l10n/app_localizations.dart';
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/// 启动页。
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///
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/// 仅负责首屏展示与路由决策（登录态判断），不含业务请求。
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class SplashPage extends ConsumerStatefulWidget {
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const SplashPage({super.key});
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@override
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ConsumerState<SplashPage> createState() => _SplashPageState();
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}
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class _SplashPageState extends ConsumerState<SplashPage> {
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bool _navigated = false;
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@override
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void initState() {
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super.initState();
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// 首帧绘制后做一次性的路由决策。
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// 不使用 Future.delayed 做跳转：App 进后台再回前台时计时器可能被挂起，
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// 导致恢复后跳转不可靠、画面卡在第一屏。改用首帧回调 + 幂等保护。
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WidgetsBinding.instance.addPostFrameCallback((_) => _decideRoute());
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}
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void _decideRoute() {
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if (_navigated || !mounted) return;
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_navigated = true;
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try {
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final target = TokenStorage.isLoggedIn ? '/home' : '/login';
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context.go(target);
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} catch (_) {
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// 极端情况下的路由异常不应卡死首屏，重试一次。
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if (mounted) {
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_navigated = false;
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WidgetsBinding.instance.addPostFrameCallback((_) => _decideRoute());
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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final l10n = AppLocalizations.of(context);
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return CupertinoPageScaffold(
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backgroundColor: CupertinoColors.systemBackground,
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child: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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const Icon(
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CupertinoIcons.heart_fill,
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size: 64,
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color: CupertinoColors.activeBlue,
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),
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const SizedBox(height: 16),
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Text(
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l10n.appTitle,
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style: const TextStyle(fontSize: 20, fontWeight: FontWeight.w600),
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),
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SizedBox(height: 8),
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CupertinoActivityIndicator(),
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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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