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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import '../../components/commonFun.dart';
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import '../../services/Storage.dart';
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import 'FaceLogin.dart';
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import 'LoginByName2.dart';
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// class LoginTabs extends StatelessWidget {
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// // This widget is the root of your application.
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// @override
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// Widget build(BuildContext context) {
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// //Flutter 强制竖屏
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// SystemChrome.setPreferredOrientations([
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// DeviceOrientation.portraitUp, //只能纵向
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// DeviceOrientation.portraitDown, //只能纵向
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// ]);
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//
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// return MaterialApp(
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// debugShowCheckedModeBanner: false,
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// title: 'Flutter Demo',
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// theme: ThemeData(
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// primarySwatch: Colors.blue,
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// visualDensity: VisualDensity.adaptivePlatformDensity,
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// ),
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// home: MyHomePage(title: 'Flutter Demo Home Page'),
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// );
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// }
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// }
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class LoginTabs extends StatefulWidget {
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LoginTabs({Key key, this.title}) : super(key: key);
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final String title;
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@override
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_MyHomePageState createState() => _MyHomePageState();
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}
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class _MyHomePageState extends State<LoginTabs> {
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@override
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void initState() {
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super.initState();
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//若下面文件不存在，
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// /data/data/com.flutter.hyzp_ybqx/shared_prefs/FlutterSharedPreferences.xml
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// value为null， 会抛出异常：
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// [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled Exception: Invalid argument(s): The source must not be null
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// int.parse (dart:core-patch/integers_patch.dart:51:25)
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Storage.getString("tabs_index").then((value) {
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g_iIndex = (null == value) ? 0 : int.parse(value);
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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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return Container(
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decoration: BoxDecoration(
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image: DecorationImage(
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image: AssetImage("assets/images/背景图.png"),
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fit: BoxFit.cover,
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),
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),
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child: Container(
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width: double.infinity,
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height: 400,
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child: Container(
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constraints: BoxConstraints(
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minWidth: double.infinity, //最小宽度尽量取最大
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maxHeight: 400 //最小高度为80
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),
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child: DefaultTabController(
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length: 2,
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child: Scaffold(
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//backgroundColor: Colors.transparent,
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appBar: AppBar(
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//backgroundColor: Colors.transparent,
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title: Text("宜宾市翠屏黑烟车电子抓拍系统"),
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leading: IconButton(
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icon: Icon(Icons.close),
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onPressed: () {
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SystemNavigator.pop();
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},
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),
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centerTitle: true,
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bottom: TabBar(
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labelColor: Colors.blueAccent,
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unselectedLabelColor: Colors.black26,
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tabs: <Widget>[Tab(text: "密码登录"), Tab(text: "刷脸登录")],
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),
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),
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body: TabBarView(
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//flutter tabbar禁止手势滑动-OK
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physics: new NeverScrollableScrollPhysics(),
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children: <Widget>[
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LoginByName2(),
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FaceLogin(),
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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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