// data目录
import 'package:flutter/material.dart';
import 'package:muse_nepu_course/global.dart';
class GlobalData {
String passtemp = '';
void saveAccount(BuildContext context) {
showDialog(
context: context,
builder: (context) {
return AlertDialog(
title: Text('修改你的一卡通密码\n如果没有错误请不要修改'),
content: TextField(
onChanged: (value) {
passtemp = value;
},
),
actions: [
TextButton(
child: Text('确认'),
onPressed: () {
Global.password = passtemp;
Global.saveaccount();
Navigator.of(context).pop();
},
)
],
);
});
}
Future getQrCode() async {
await Global().getqr();
}
String getQrCodeData() {
return Global.qrcodegetter();
}
}
// ui目录
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:pretty_qr_code/pretty_qr_code.dart';
import 'package:slide_countdown/slide_countdown.dart';
import 'package:muse_nepu_course/data/global_data.dart';
class QRCodeUI extends StatefulWidget {
@override
_QRCodeUIState createState() => _QRCodeUIState();
}
class _QRCodeUIState extends State {
final streamDuration = StreamDuration(Duration(seconds: 50));
final GlobalData _globalData = GlobalData();
@override
void initState() {
super.initState();
_globalData.getQrCode();
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
backgroundColor: Global.home_currentcolor,
actions: [
IconButton(
icon: Icon(Icons.settings),
onPressed: () {
_globalData.saveAccount(context);
},
),
],
),
body: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('点击二维码可手动刷新\n当前是' + Global.qrcode),
Align(
alignment: Alignment.topCenter,
child: SlideCountdown(
decoration: BoxDecoration(
color: Global.home_currentcolor,
borderRadius: BorderRadius.circular(10)),
durationTitle: DurationTitle(
days: '天', hours: '时', minutes: '分', seconds: '秒'),
streamDuration: streamDuration,
onChanged: (Duration remaining) {
print('剩余' + remaining.inSeconds.toString());
if (remaining.inSeconds <= 1) {
streamDuration.change(Duration(seconds: 51));
_globalData.getQrCode().then((value) {
setState(() {});
});
}
},
),
),
Expanded(
child: GestureDetector(
onTap: () {
print('被点击了');
_globalData.getQrCode().then((value) {
streamDuration.change(Duration(seconds: 51));
setState(() {});
});
},
child: PrettyQr(
typeNumber: 3,
size: 200,
data: _globalData.getQrCodeData(),
errorCorrectLevel: QrErrorCorrectLevel.M,
roundEdges: true,
),
),
),
],
),
),
);
}
}
// service目录
import 'package:dio/dio.dart';
import 'package:muse_nepu_course/global.dart';
class GlobalService {
final Dio dio = Dio();
Future getQR() async {
try {
Response response = await dio.get(Global.getqrcodeurl(Global.password));
Global.qrcode = response.data.toString();
Global.saveqrcode();
} catch (e) {
print(e);
}
}
}
// model目录
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
class Global {
static final Global _singleton = Global._internal();
factory Global() {
return _singleton;
}
Global._internal();
static String password = '';
static String qrcode = '';
static Color home_currentcolor = Colors.blue;
static String getqrcodeurl(String password) {
return 'http://card.nepu.edu.cn:8070/cassyno/index.php/Home/Index/getQRcode?cardno=20181110129&password=' + password;
}
static Future saveaccount() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
await prefs.setString('password', password);
}
static Future readaccount() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
password = prefs.getString('password') ?? '';
}
static Future saveqrcode() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
await prefs.setString('qrcode', qrcode);
}
static Future readqrcode() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
qrcode = prefs.getString('qrcode') ?? '';
}
Future getqr() async {
await readaccount();
await readqrcode();
if (password != '') {
await GlobalService().getQR();
}
}
static String qrcodegetter() {
return qrcode;
}
}
