【发布时间】：2020-06-19 18:31:39
【问题描述】：
这是因为我正在尝试实现一个条码阅读器来扫描员工身份证。所以，我想要实现的是当分配给扫描卡的代理执行扫描时，它应该在另一个页面中显示扫描结果，而不是同一个屏幕或小部件。
简单来说，就像您拥有待办事项列表，当您单击待办事项时，它会找到待办事项 ID 并带您进入待办事项详细信息页面。这意味着指向员工详细信息页面的链接将被编码到条形码中，因此当您扫描时，它会将您带到员工详细信息页面。但我不知道该怎么做。
这就是我在下面所做的。这可以很好地执行扫描，但显示结果是问题。
import 'dart:async';
import 'package:erg_app/ScanPage.dart';
import 'package:erg_app/eops.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:barcode_scan/barcode_scan.dart';
import 'package:erg_app/Animations/FadeAnimation.dart';
import 'package:flutter/services.dart';
void main() {
runApp(
MaterialApp(
debugShowCheckedModeBanner: false,
home: StartScanPage(),
)
);
}
class StartScanPage extends StatefulWidget {
@override
StartScanPageState createState() {
return StartScanPageState();
}
}
class StartScanPageState extends State<StartScanPage> {
String result = "Bio Data:";
Future _scanQR() async {
try {
String qrResult = await BarcodeScanner.scan();
setState(() {
result = qrResult;
});
} on PlatformException catch (ex) {
if (ex.code == BarcodeScanner.CameraAccessDenied) {
setState(() {
result = "Camera permission was denied";
});
} else {
setState(() {
result = "Unknown Error $ex";
});
}
} on FormatException {
setState(() {
result = "You pressed the back button before scanning anything";
});
} catch (ex) {
setState(() {
result = "Unknown Error $ex";
});
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: Container(
width: double.infinity,
height: MediaQuery.of(context).size.height,
padding: EdgeInsets.symmetric(horizontal: 30, vertical: 50),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Column(
children: <Widget>[
FadeAnimation(1, Text("Verify Farmer",
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 30
),)),
SizedBox(height: 20,),
FadeAnimation(1.2, Text("Automatic identity verification which enables you to verify each farmer applicant",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.grey[700],
fontSize: 15
),)),
],
),
FadeAnimation(1.4, Container(
height: MediaQuery.of(context).size.height / 3,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/images/illustration1.png')
)
),
)),
Column(
children: <Widget>[
FadeAnimation(1.5, MaterialButton(
color: Colors.green,
minWidth: double.infinity,
height: 60,
onPressed: _scanQR,
// () {
// Navigator.push(context, MaterialPageRoute(builder: (context) => ScanPage()));
// },
shape: RoundedRectangleBorder(
side: BorderSide(
color: Colors.green
),
borderRadius: BorderRadius.circular(50)
),
child: Text("Start Scan", style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 18
),),
)),
SizedBox(height: 20,),
FadeAnimation(1.6, Container(
// padding: EdgeInsets.only(top: 3, left: 3),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(50),
border: Border(
bottom: BorderSide(color: Colors.green),
top: BorderSide(color: Colors.green),
left: BorderSide(color: Colors.green),
right: BorderSide(color: Colors.green),
)
),
child: MaterialButton(
minWidth: double.infinity,
height: 60,
onPressed: () {
Navigator.push(context, MaterialPageRoute(builder: (context) => EopPage()));
},
color: Colors.white,
elevation: 0,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50)
),
child: Text("Cancel", style: TextStyle(
// color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 18
), ),
),
))
],
)
],
),
),
),
);
}
}
我想在这里显示结果：
import 'package:flutter/material.dart';
import 'package:erg_app/CaptureInputsPage.dart';
void main() {
runApp(ProfilePage());
}
class ProfilePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
appBar: AppBar(
title: new Center(child: Text('Farmers Data', textAlign: TextAlign.left)),
iconTheme: IconThemeData(color: Colors.white),
backgroundColor: Colors.green,
leading: IconButton(
icon: Icon(Icons.assignment_ind),
onPressed: () {},
),
),
body: Container(
child: ListView(
children: <Widget>[
Container(margin: EdgeInsets.only(top: 20),),
CircleAvatar(
radius: 80,
backgroundColor: Colors.grey,
),
Text(
'Yusuf Danladi',
style: TextStyle(
fontFamily: 'SourceSansPro',
fontSize: 25,
),
textAlign: TextAlign.center,
),
Text(
'Welcome',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[400],
letterSpacing: 2.5,
),
textAlign: TextAlign.center,
),
Container(margin: EdgeInsets.only(top: 20),),
SizedBox(
height: 20.0,
width: 200,
child: Divider(
color: Colors.teal[100],
),
),
Text(
'Farmer Details',
textAlign: TextAlign.center,
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'Phone:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'+234 801 000 4504',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'BVN:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'22108691911',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'Appicant ID:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'ERG-108691911',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'State/LGA:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'Taraba/Ussa',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'Farm Size:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'5000 meter sq',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Card(
color: Colors.white,
margin:
EdgeInsets.symmetric(vertical: 10.0, horizontal: 25.0),
child: ListTile(
leading: Text(
'Geo Coord.:',
style: TextStyle(
fontSize: 20,
fontFamily: 'SourceSansPro',
color: Colors.green[700],
letterSpacing: 2.5,
),
),
title: Text(
'012350007, 038245543',
style:
TextStyle(fontFamily: 'BalooBhai', fontSize: 20.0),
),
),
),
Container(
margin: EdgeInsets.only(top: 20, bottom: 30),
child: Center(
child: RaisedButton(
padding: EdgeInsets.fromLTRB(80, 10, 80, 10),
color: Colors.green,
child: Text("Complete", style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 14), ),
onPressed: () {
Navigator.of(context).push(MaterialPageRoute(builder: (context) => CaptureInputsPage()));
},
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50),
),
),
),
),
],
),
),
),
);
}
}
【问题讨论】：
标签： flutter dart flutter-layout flutter-dependencies