130 lines
3.3 KiB
Dart
130 lines
3.3 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:flutter_styled_toast/flutter_styled_toast.dart';
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import 'package:pikapika/basic/config/Version.dart';
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import 'package:pikapika/basic/config/WillPopNotice.dart';
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import 'package:pikapika/screens/components/Badge.dart';
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import 'package:uni_links/uni_links.dart';
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import 'package:uri_to_file/uri_to_file.dart';
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import '../basic/Common.dart';
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import 'CategoriesScreen.dart';
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import 'PkzArchiveScreen.dart';
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import 'SpaceScreen.dart';
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// MAIN UI 底部导航栏
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class AppScreen extends StatefulWidget {
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const AppScreen({Key? key}) : super(key: key);
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@override
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State<AppScreen> createState() => _AppScreenState();
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}
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class _AppScreenState extends State<AppScreen> {
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late StreamSubscription<String?> _linkSubscription;
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@override
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void initState() {
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versionEvent.subscribe(_onVersion);
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_linkSubscription = linkSubscript(context);
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super.initState();
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Future.delayed(Duration.zero, () async {
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versionPop(context);
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versionEvent.subscribe(_versionSub);
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});
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}
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@override
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void dispose() {
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versionEvent.unsubscribe(_onVersion);
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_linkSubscription.cancel();
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versionEvent.unsubscribe(_versionSub);
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super.dispose();
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}
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_versionSub(_) {
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versionPop(context);
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}
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void _onVersion(dynamic a) {
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setState(() {});
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}
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static const List<Widget> _widgetOptions = <Widget>[
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CategoriesScreen(),
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SpaceScreen(),
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];
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late int _selectedIndex = 0;
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void _onItemTapped(int index) {
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setState(() {
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_selectedIndex = index;
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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 body = Scaffold(
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body: IndexedStack(
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index: _selectedIndex,
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children: _widgetOptions,
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),
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bottomNavigationBar: BottomNavigationBar(
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items: <BottomNavigationBarItem>[
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const BottomNavigationBarItem(
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icon: Icon(Icons.public),
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label: '浏览',
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),
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BottomNavigationBarItem(
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icon: Badged(
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child: const Icon(Icons.face),
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badge: latestVersion() == null ? null : "1",
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),
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label: '我的',
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),
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],
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currentIndex: _selectedIndex,
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iconSize: 20,
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selectedFontSize: 12,
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unselectedFontSize: 12,
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onTap: _onItemTapped,
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),
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);
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return willPop(body);
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}
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int _noticeTime = 0;
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Widget willPop(Scaffold body) {
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return WillPopScope(
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child: body,
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onWillPop: () async {
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if (willPopNotice()) {
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final now = DateTime.now().millisecondsSinceEpoch;
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if (_noticeTime + 3000 > now) {
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return true;
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} else {
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_noticeTime = now;
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showToast(
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"再次返回将会退出应用程序",
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context: context,
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position: StyledToastPosition.center,
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animation: StyledToastAnimation.scale,
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reverseAnimation: StyledToastAnimation.fade,
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duration: const Duration(seconds: 3),
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animDuration: const Duration(milliseconds: 300),
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curve: Curves.elasticOut,
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reverseCurve: Curves.linear,
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);
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return false;
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}
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}
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return true;
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},
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);
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}
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}
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