hyzp_ybqx-Commit001：代码刚转换好，编译通过
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WinUser01
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import 'package:flutter/material.dart';
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import 'package:hyzp_ybqx/pages/Works/TJXX/tj_data.dart';
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import 'package:hyzp_ybqx/widget/JdButton.dart';
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import '../../services/EventBus.dart';
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import 'package:camera/camera.dart';
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import '../../components/commonFun.dart';
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import 'dart:io';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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class FaceLogin2 extends StatefulWidget {
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FaceLogin2({this.arguments, Key key}) : super(key: key);
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var arguments;
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_LoginPageState createState() => _LoginPageState();
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}
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class _LoginPageState extends State<FaceLogin2> {
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//try_setState(); //避免如下异常报错
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try_setState() {
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try {
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setState(() {});
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} catch (e) {
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print('setState(() {})异常：${e}');
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}
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}
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Future<void> camerasInit() async {
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try {
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WidgetsFlutterBinding.ensureInitialized();
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cameras = await availableCameras();
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print(cameras.toString());
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} on CameraException catch (e) {
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//logError(e.code, e.description);
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}
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}
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@override
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void initState() {
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super.initState();
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camerasInit();
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//监听统计数据改变事件
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eventBus.on<StatisDataUpdate>().listen((event) {
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print(event.str);
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updateMayLogin();
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});
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}
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//处理延迟登录
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updateMayLogin() {
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//判断从网络获取三种统计数据是否完成
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// if (listZptjStatisAlone.length >= dwSum &&
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// listTodayShtj.length >= dwSum &&
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// listClltjStatisAlone.length >= dwSum) {
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// bMayLogin = true;
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// }
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if (listAllStatisData.length >= dwSum) {
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bMayLogin = true;
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try_setState();
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}
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}
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//监听登录页面销毁的事件
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dispose() {
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super.dispose();
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eventBus.fire(new UserEvent('登录成功...'));
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}
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double _heigth = 340;
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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// appBar: AppBar(
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// centerTitle: true,
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// title: Text('人脸验证登录'),
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// ),
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body: Container(
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padding: EdgeInsets.only(
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left: ScreenUtil().setWidth(60),
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right: ScreenUtil().setWidth(60),
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top: ScreenUtil().setWidth(58)),
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child: ListView(
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children: <Widget>[
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InkWell(
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child: Center(
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child: Container(
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//margin: EdgeInsets.only(top: ScreenUtil().setHeight(40)),
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height: ScreenUtil().setHeight(_heigth), //这样在不同的手机上会变形
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width: ScreenUtil().setWidth(_heigth),
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// height: _heigth,
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// width: _heigth,
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color: Colors.black12,
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child: Stack(
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children: [
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Align(
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alignment: Alignment.center,
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child: Image.asset('assets/images/图层 5.png', fit: BoxFit.cover),
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),
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Align(
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alignment: Alignment.center,
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child: Column(
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children: [
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SizedBox(height: ScreenUtil().setHeight(_heigth / 3)),
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Container(
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height: ScreenUtil().setHeight(6),
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color: Color.fromRGBO(53, 136, 240, 1),
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),
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],
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),
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),
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Align(
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alignment: Alignment.bottomCenter,
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child: Container(
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height: ScreenUtil().setHeight(_heigth - _heigth / 3 - 6),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Color.fromRGBO(222, 237, 255, 1),
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Color.fromRGBO(255, 255, 255, 0),
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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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onTap: () {
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if (!bMayLogin) {
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return;
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}
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Navigator.pushNamed(context, '/faceLogin_take_pictuer', arguments: 'FaceLogin');
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},
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),
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SizedBox(height: ScreenUtil().setHeight(40)),
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Container(
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height: ScreenUtil().setWidth(130),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: [
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_getImageWidget('assets/images/形状 811.png', '正对手机'),
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_getImageWidget('assets/images/形状 810.png', '光线充足'),
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_getImageWidget('assets/images/形状 809.png', '放慢动作'),
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],
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),
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),
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SizedBox(height: ScreenUtil().setHeight(20)),
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InkWell(
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onTap: () {
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if (!bMayLogin) {
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return;
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}
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Navigator.pushNamed(context, '/faceLogin_take_pictuer', arguments: 'FaceLogin');
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},
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child: Container(
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alignment: Alignment(0, 0),
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margin: EdgeInsets.all(5),
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padding: EdgeInsets.all(5),
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width: ScreenUtil().setWidth(999),
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height: ScreenUtil().setHeight(126),
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decoration: BoxDecoration(
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color: Color.fromRGBO(23, 176, 91, 1), borderRadius: BorderRadius.circular(10)),
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child: Text(
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bMayLogin ? "开始检测" : "加载中 . . .",
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style: TextStyle(color: Colors.white, fontSize: 18),
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),
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),
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),
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// JdButton(
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// height: 126,
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// //JdText中已经使用ScreenUtil().setHeight(126)，此处不能传 ScreenUtil().setHeight(126) ，否则严重错位
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// width: 999,
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// text: "开始检测",
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// color: Color.fromRGBO(23, 176, 91, 1),
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// onTop: () {
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// if (!bMayLogin) {
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// return;
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// }
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// Navigator.pushNamed(context, '/faceLogin_take_pictuer', arguments: '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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// 定义一个图文组件
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Widget _getImageWidget(String imagePath, String text) {
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return Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Container(
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height: ScreenUtil().setHeight(60),
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child: Image.asset(imagePath, fit: BoxFit.cover),
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),
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Text(text, style: TextStyle(fontSize: 14)),
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],
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);
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}
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//定义一个组件显示图片
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Widget _getImage(String filePath) {
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if (null == filePath) {
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return Text("请选择图片...");
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}
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File _image = File(filePath);
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//return Image.file(_image);
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int imageWidth;
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int imageHeight;
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// 预先获取图片信息
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Image image = Image.file(File.fromUri(Uri.parse(filePath)));
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image.image
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.resolve(new ImageConfiguration())
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.addListener(new ImageStreamListener((ImageInfo info, bool _) {
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imageWidth = info.image.width;
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imageHeight = info.image.height;
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}));
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: <Widget>[
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//480*720
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Text('宽高：${imageWidth}x${imageHeight}', style: TextStyle(fontSize: 17.0)),
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Container(
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width: imageWidth / 4,
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height: imageHeight / 4,
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decoration: BoxDecoration(
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image: DecorationImage(image: AssetImage(filePath), fit: BoxFit.cover),
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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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