ListView dynamic data display
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
//STATUS BAR SET
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
statusBarColor: Colors.transparent,
statusBarBrightness: Brightness.light,
statusBarIconBrightness: Brightness.light,
));
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage());
}
}
class MyHomePage extends StatefulWidget {
@override
createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
List<StudentResponse> studentList = []; //EMPTY LIST
@override
void initState() {
super.initState();
setState(() {
studentList = studentData();
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('ListView Student')),
body: ListView(children: [
...studentList
.map((e) => Card(
child: Container(
padding: EdgeInsets.all(10),
child: Row(children: [
//FIRST CHARACTER
CircleAvatar(
radius: 24,
child: Text(e.name[0],
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.w500))),
SizedBox(width: 10),
//NAME, ADDRESS
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(e.name,
style: TextStyle(
color: Colors.black,
fontSize: 16,
fontWeight: FontWeight.w500)),
SizedBox(height: 5),
Text(e.address,
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w500))
])),
//FAVOURITE
IconButton(
onPressed: () {
int findIndex = studentList.indexWhere(
(element) => element.userId == e.userId);
setState(() {
studentList[findIndex].isFavourite =
!studentList[findIndex].isFavourite;
});
},
icon: Icon(
e.isFavourite
? Icons.favorite
: Icons.favorite_border,
color: Colors.grey))
]))))
.toList()
])
);
}
}
//STUDENT MODEL CLASS
class StudentResponse {
int userId;
String name, address;
bool isFavourite;
StudentResponse(
{this.userId, this.name, this.address, this.isFavourite = false});
}
//STUDENT STORE DATA RETURN List<StudentResponse>
studentData() => [
StudentResponse(
userId: 1,
name: 'Kamlesh',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 2,
name: 'Nayan',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 3,
name: 'Hirva',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh '),
];
ListView using Favourite Null Safety
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
//STATUS BAR SET
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
statusBarColor: Colors.transparent,
statusBarBrightness: Brightness.light,
statusBarIconBrightness: Brightness.light,
));
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage());
}
}
class MyHomePage extends StatefulWidget {
@override
createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
late List<StudentResponse> studentList = []; //EMPTY LIST
@override
void initState() {
super.initState();
setState(() {
studentList = studentData();
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('ListView Student')),
body: ListView(children: [
...studentList
.map((e) => studentWidget(
name: e.name,
address: e.address,
favourite: e.isFavourite,
onTapFavourite: () {
int findIndex = studentList
.indexWhere((element) => element.userId == e.userId);
setState(() {
studentList[findIndex].isFavourite =
!studentList[findIndex].isFavourite!;
});
}))
.toList()
]));
}
studentWidget(
{String? name,
String? address,
bool? favourite,
Function()? onTapFavourite}) =>
Card(
child: Container(
padding: EdgeInsets.all(10),
child: Row(children: [
//FIRST CHARACTER
CircleAvatar(
radius: 24,
child: Text(name![0],
style: TextStyle(
fontSize: 18, fontWeight: FontWeight.w500))),
SizedBox(width: 10),
//NAME, ADDRESS
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(name,
style: TextStyle(
color: Colors.black,
fontSize: 16,
fontWeight: FontWeight.w500)),
SizedBox(height: 5),
Text(address!,
style: TextStyle(
fontSize: 14, fontWeight: FontWeight.w500))
])),
//FAVOURITE
IconButton(
onPressed: onTapFavourite,
icon: Icon(
favourite! ? Icons.favorite : Icons.favorite_border,
color: Colors.grey))
])));
}
//STUDENT MODEL CLASS
class StudentResponse {
int? userId;
String? name, address;
bool? isFavourite;
StudentResponse(
{this.userId, this.name, this.address, this.isFavourite = false});
}
//STUDENT STORE DATA RETURN List<StudentResponse>
studentData() => [
StudentResponse(
userId: 1,
name: 'Kamlesh',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 2,
name: 'Nayan',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 3,
name: 'Hirva',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh '),
];
Also Read :Animated ListView In Flutter
ListView with Common Student Widget
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
//STATUS BAR SET
SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
statusBarColor: Colors.transparent,
statusBarBrightness: Brightness.light,
statusBarIconBrightness: Brightness.light,
));
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage());
}
}
class MyHomePage extends StatefulWidget {
@override
createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
List<StudentResponse> studentList = []; //EMPTY LIST
@override
void initState() {
super.initState();
setState(() {
studentList = studentData();
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text('ListView Student')),
body: ListView(children: [
...studentList
.map((e) => studentWidget(
name: e.name,
address: e.address,
favourite: e.isFavourite,
onTapFavourite: () {
int findIndex = studentList
.indexWhere((element) => element.userId == e.userId);
setState(() {
studentList[findIndex].isFavourite =
!studentList[findIndex].isFavourite;
});
}))
.toList()
]));
}
studentWidget(
{String name,
String address,
bool favourite,
Function() onTapFavourite}) =>
Card(
child: Container(
padding: EdgeInsets.all(10),
child: Row(children: [
//FIRST CHARACTER
CircleAvatar(
radius: 24,
child: Text(name[0],
style: TextStyle(
fontSize: 18, fontWeight: FontWeight.w500))),
SizedBox(width: 10),
//NAME, ADDRESS
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(name,
style: TextStyle(
color: Colors.black,
fontSize: 16,
fontWeight: FontWeight.w500)),
SizedBox(height: 5),
Text(address,
style: TextStyle(
fontSize: 14, fontWeight: FontWeight.w500))
])),
//FAVOURITE
IconButton(
onPressed: onTapFavourite,
icon: Icon(
favourite ? Icons.favorite : Icons.favorite_border,
color: Colors.grey))
])));
}
//STUDENT MODEL CLASS
class StudentResponse {
int userId;
String name, address;
bool isFavourite;
StudentResponse(
{this.userId, this.name, this.address, this.isFavourite = false});
}
//STUDENT STORE DATA RETURN List<StudentResponse>
studentData() => [
StudentResponse(
userId: 1,
name: 'Kamlesh',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 2,
name: 'Nayan',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh'),
StudentResponse(
userId: 3,
name: 'Hirva',
address: 'To. Ravani Ta.Visavadar Dis.Junagadh '),
];
Now you can understand how ListView SetState Custom Widget and Null Safety works for more tutorial stay connected
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