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import 'dart:io';
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import 'package:camera/camera.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_drag_scale/core/drag_scale_widget.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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import 'package:fluttertoast/fluttertoast.dart';
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import 'package:hyzp_ybqx511528_xingwen/components/customDialogFaceReg.dart';
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import 'package:hyzp_ybqx511528_xingwen/components/dioFun.dart';
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import 'package:image_picker/image_picker.dart';
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import '../../components/commonFun.dart';
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import '../../services/EventBus.dart';
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class FaceReg extends StatefulWidget {
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FaceReg({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<FaceReg> {
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//try_setState(); //避免异常报错
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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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String imagePath = '';
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Size imageSize;
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String _username;
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//人脸注册页面，这里建议自动填入当前登录用户名
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TextEditingController _controller = TextEditingController(text: g_userInfo.username);
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@override
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void initState() {
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camerasInit();
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//监听人脸注册数据更新事件
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eventBus.on<FaceRegUpdateEvent>().listen((event) async {
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print(event.str);
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try_setState();
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});
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super.initState();
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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: PreferredSize(
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preferredSize: Size.fromHeight(ScreenUtil().setHeight(173)), // 设置appBar高度
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// 设置appBar高度
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child: AppBar(
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automaticallyImplyLeading: false,
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centerTitle: true,
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titleSpacing: 0.0,
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//设置title的左边距
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flexibleSpace: Container(
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//SizedBox(height: ScreenUtil().statusBarHeight), //显示顶部状态栏
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// SizedBox(height: ScreenUtil().setHeight(10)), //显示顶部状态栏
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padding: EdgeInsets.only(top: ScreenUtil().statusBarHeight), //留出顶部状态栏高度
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child: Container(
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//height: ScreenUtil().setHeight(173),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.centerLeft,
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end: Alignment.centerRight,
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colors: [
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Color.fromRGBO(12, 186, 156, 1),
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Color.fromRGBO(39, 127, 235, 1),
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],
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),
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),
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// decoration: BoxDecoration(
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// gradient: LinearGradient(colors: [
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// Color(0xFF0018EB),
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// Color(0xFF01C1D9),
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// ], begin: Alignment.bottomCenter, end: Alignment.topCenter),
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// ),
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),
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),
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title: Padding(
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padding: EdgeInsets.only(left: 0, right: 0),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.start,
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children: [
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getIconAndTextButton(
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iconColor: Colors.white,
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iconData: Icons.chevron_left_outlined,
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onPress: () {
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Navigator.pop(context);
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},
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),
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Expanded(
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child: Text("人脸注册",
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style: TextStyle(color: Colors.white, fontSize: 20),
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textAlign: TextAlign.center,
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overflow: TextOverflow.ellipsis),
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),
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SizedBox(width: 50),
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],
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),
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),
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),
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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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//解决 Flutter ListView 子元素 无限宽度 的问题
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Container(
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alignment: Alignment.topCenter,
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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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: 20, bottom: 5, left: 0, right: 0),
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height: ScreenUtil().setHeight(200),
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width: ScreenUtil().setWidth(260),
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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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Row(
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mainAxisAlignment: MainAxisAlignment.start,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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SizedBox(width: 10),
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Container(
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padding: EdgeInsets.only(top: 16),
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child: Text('用户名： ', style: TextStyle(fontSize: 18)),
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),
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Container(
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height: ScreenUtil().setHeight(160),
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width: ScreenUtil().setWidth(500),
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child: TextField(
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//textAlign: TextAlign.right,
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textAlignVertical: TextAlignVertical.center,
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maxLines: 1,
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style: TextStyle(fontSize: 18),
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decoration: InputDecoration(
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hintText: '請輸入用户名',
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//border: InputBorder.none, //TextField去掉下划线
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contentPadding: EdgeInsets.only(right: 0),
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enabledBorder: new UnderlineInputBorder(
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borderSide: BorderSide(color: Colors.blue)),
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focusedBorder: new UnderlineInputBorder(
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borderSide: BorderSide(color: Colors.blue)),
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),
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controller: _controller,
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//利用控制器初始化文本
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onChanged: (value) {
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_username = value;
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},
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),
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),
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SizedBox(width: 10),
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Container(
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width: ScreenUtil().setWidth(220),
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padding: EdgeInsets.only(top: 16),
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child: FlatButton(
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color: Colors.black12,
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child: Text('本人', style: TextStyle(color: Colors.blue, fontSize: 18)),
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onPressed: () {
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_controller.text = g_userInfo.username;
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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(height: 30),
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SizedBox(height: 10),
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//480*720
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Text(null == imageSize ? '' : '宽高：${imageSize.width}x${imageSize.height}',
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style: TextStyle(fontSize: 18)),
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SizedBox(height: 5),
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Container(
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alignment: Alignment(0, 0),
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width: ScreenUtil().setWidth(980),
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height: ScreenUtil().setHeight(760),
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decoration: BoxDecoration(
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border: Border.all(color: Colors.orange, width: 1.0),
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borderRadius: BorderRadius.circular(5),
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),
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child: _getImage(imagePath),
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),
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SizedBox(height: 25),
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: [
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getBtnSizeX(
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width: 90,
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text: "拍照",
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onPressedFun: () {
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//Navigator.pushNamed(context, '/faceReg_take_pictuer', arguments: 'FaceLogin');
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_username = _controller.text;
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Navigator.pushNamed(context, '/faceReg_take_pictuer',
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arguments: 'FaceReg')
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.then((_imagePath) {
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_controller.text = _username;
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imagePath = _imagePath as String;
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if (imagePath.isNotEmpty) {
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print('imagePath = $imagePath');
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//imageSize = Size(480, 720);
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getImageSize(imagePath);
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//eventBus.fire(FaceRegUpdateEvent('人脸注册数据已更新'));
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}
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});
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}),
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getBtnSizeX(
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width: 90,
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text: "选择图片",
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onPressedFun: () {
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//Navigator.pushNamed(context, '/faceReg_take_pictuer', arguments: 'FaceLogin');
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_getImageGallery();
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}),
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getBtnSizeX(
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width: 90,
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text: "人脸注册",
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onPressedFun: (_controller.text.isEmpty && imagePath.isEmpty)
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? null
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: () {
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//人脸注册，username 用户名，filePath 人脸图片路径
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if (_controller.text.isNotEmpty && imagePath.isNotEmpty) {
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print('等待人脸注册或更新确认');
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Navigator.of(context)
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.push(
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PageRouteBuilder(
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opaque: false,
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pageBuilder: (context, animation, secondaryAnimation) =>
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CustomDialogFaceReg(
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title: '人脸注册或更新确认',
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username: _username,
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imagePath: imagePath,
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imageSize: imageSize,
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),
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),
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)
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.then((ret) async {
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print('value = $ret');
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if (ret) {
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print('用户已确认，开始处理人脸注册或更新！');
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faceRegFun(
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username: _username,
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filePath: imagePath,
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context: context);
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} else {
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print('用户取消了人脸注册或更新');
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}
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});
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} else if (_controller.text.isEmpty) {
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Fluttertoast.showToast(
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msg: "用户名不能为空！",
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toastLength: Toast.LENGTH_SHORT,
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gravity: ToastGravity.CENTER,
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);
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} else if (imagePath.isEmpty) {
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Fluttertoast.showToast(
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msg: "请选择用户人脸图片！",
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toastLength: Toast.LENGTH_SHORT,
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gravity: ToastGravity.CENTER,
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);
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}
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}),
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],
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),
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// RaisedButton(
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// child: Text('人脸登录'),
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// onPressed: () {
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// Navigator.pushNamed(context, '/faceReg_take_pictuer', arguments: 'FaceLogin');
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// }),
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SizedBox(height: 10),
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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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//从相册选取图片
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Future _getImageGallery() async {
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final imagePicker = ImagePicker();
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_username = _controller.text;
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//final pickedFile = await imagePicker.getImage(source: ImageSource.gallery, maxWidth: 400);
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imagePicker.getImage(source: ImageSource.gallery, maxWidth: 480).then((pickedFile) {
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if (pickedFile != null) {
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print('pickedFile = ${pickedFile.path}');
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imagePath = pickedFile.path;
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getImageSize(imagePath);
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} else {
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print('No image selected.');
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}
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_controller.text = _username;
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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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_getImage(String filePath) {
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print('filePath = $filePath');
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if (null == imageSize || filePath.isEmpty) {
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return Text("注意：\n1、请输入“已注册”的用户名；\n2、请选择包含“用户人脸”的图片；\n3、两样都选好后再进行注册，不然可能失败！");
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}
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double _width = ScreenUtil().setWidth(980);
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double _heigth = _width * (imageSize.height / imageSize.width);
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final _image = Image.file(File(filePath));
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// 预先获取图片信息
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return SingleChildScrollView(
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//滑动的方向 Axis.vertical为垂直方向滑动，Axis.horizontal 为水平方向
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scrollDirection: Axis.vertical,
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//true 滑动到底部
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reverse: false,
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padding: EdgeInsets.all(0.0),
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//滑动到底部回弹效果
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physics: BouncingScrollPhysics(),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: <Widget>[
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Container(
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width: _width,
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height: _heigth,
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// child: PinchZoomImage( //不好用
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// //image: Image.network('https://i.imgur.com/tKg0XEb.jpg'),
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// image: _image,
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// zoomedBackgroundColor: Color.fromRGBO(240, 240, 240, 1.0),
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// hideStatusBarWhileZooming: true,
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// onZoomStart: () {
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// print('Zoom started');
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// },
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// onZoomEnd: () {
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// print('Zoom finished');
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// },
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// ),
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//DragScaleContainer 插件只能放大，不能缩小到比原始尺寸小
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child: DragScaleContainer(doubleTapStillScale: true, child: _image
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// child: Image(
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// image: NetworkImage(
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// 'http://h.hiphotos.baidu.com/zhidao/wh%3D450%2C600/sign=0d023672312ac65c67506e77cec29e27/9f2f070828381f30dea167bbad014c086e06f06c.jpg'),
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// ),
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),
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//child: _image,
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//一个大坑：用 AssetImage(filePath) 方式，首次加载拍照返回的照片，始终报错，刷新后则能够正常加载。
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// 用 Container 的 child 方式解决
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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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// 预先获取图片信息
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Future getImageSize(String filePath) async {
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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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imageSize = Size(
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info.image.width.toDouble(),
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info.image.height.toDouble(),
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);
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print('imageSize = $imageSize');
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//必须延迟刷新，否则启动App后，第一次进行拍照返回会抛异常，无法显示返回的照片
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//启动App后，第一次进行拍照返回，在 AS Terminal 按 R 刷新可以显示图片。
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//暂存，后续解决
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try_setState();
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// Future.delayed(const Duration(milliseconds: 3000), () {
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// //try_setState();
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//eventBus.fire(FaceRegUpdateEvent('人脸注册数据已更新')); //这样刷新有效
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// });
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}));
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}
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}
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