152 lines
4.7 KiB
Dart
152 lines
4.7 KiB
Dart
import 'package:flutter/material.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 FaceLogin extends StatefulWidget {
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FaceLogin({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<FaceLogin> {
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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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}
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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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@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.all(ScreenUtil().setWidth(20)),
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child: ListView(
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children: <Widget>[
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Center(
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child: Container(
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margin: EdgeInsets.only(top: 30),
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height: ScreenUtil().setWidth(160),
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width: ScreenUtil().setWidth(160),
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child: Image.asset('assets/images/ybsthbj.png', fit: BoxFit.fitHeight),
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),
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),
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//SizedBox(height: 30),
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Center(
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child: Container(
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//margin: EdgeInsets.only(top: 30),
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height: ScreenUtil().setWidth(800),
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width: ScreenUtil().setWidth(800),
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child: FlatButton(
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onPressed: () {
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Navigator.pushNamed(context, '/faceLogin_take_pictuer', arguments: 'FaceLogin');
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},
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//已经为图片header1.png添加圆形边框
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child: Stack(
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children: <Widget>[
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Align(
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alignment: Alignment.center,
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child: Container(
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child: Image.asset('assets/images/header1.png', fit: BoxFit.cover),
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),
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),
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Align(
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alignment: Alignment.center,
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child: Container(
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alignment: Alignment(0, 0),
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//192像素的图片显示出来为202像素，200 = 192 + 8
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height: 200,
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width: 200,
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decoration: BoxDecoration(
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//color: Colors.black,
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shape: BoxShape.circle,
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border: Border.all(color: Color.fromRGBO(88, 126, 211, 1), width: 5.0),
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// borderRadius: BorderRadius.all(
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// Radius.circular(400),
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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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SizedBox(
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height: 20,
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),
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// Container(
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// alignment: Alignment(0, 0),
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// width: 200,
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// height: 230,
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// decoration: BoxDecoration(
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// border: Border.all(color: Colors.orange, width: 1.0),
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// ),
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// child: _getImage(widget.arguments),
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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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