how Can i make this Single selection Flutter? - flutter

Question

I have an Apps which is having a listview with the reaction button in a flutter . I want to make this when a user clicked any of this love icon then it's filled with red color.
enter image description here
enter image description here
Like this image but the problem is when I clicked one of this love icon all of the icons turned into red color but I only want to change the color of love of icon which one is Selected.
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
bool like;
#override
List<String> user = ['Dipto', 'Dipankar', "Sajib", 'Shanto', 'Pranto'];
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('ListView Demu'),
),
body: Center(
child: Container(
child: ListView.builder(
itemCount: user.length,
itemBuilder: (context, index) {
return Container(
padding: EdgeInsets.all(10),
height: 50,
width: MediaQuery.of(context).size.width * 0.8,
color: Colors.yellowAccent,
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
user[index],
),
Positioned(
child: IconButton(
icon: _iconControl(like),
onPressed: () {
if (like == false) {
setState(() {
like = true;
_iconControl(like);
});
} else {
setState(() {
like = false;
_iconControl(like);
});
}
},
),
),
],
),
);
},
),
)),
);
}
_iconControl(bool like) {
if (like == false) {
return Icon(Icons.favorite_border);
} else {
return Icon(
Icons.favorite,
color: Colors.red,
);
}
}
}
I also try with using parameter but Its failed Like that :
child: IconButton(
icon: _iconControl(true),
onPressed: () {
if (false) {
setState(() {
_iconControl(true);
});
} else {
setState(() {
_iconControl(false);
});
}
},
),
Can you help me Please. Thanks in advance

Answer 1

You can create a modal class to manage the selection of your list
Just create a modal class and add a boolean variable to maintaining selection using. that boolean variable
SAMPLE CODE
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
bool like;
List<Modal> userList = List<Modal>();
#override
void initState() {
userList.add(Modal(name: 'Dipto', isSelected: false));
userList.add(Modal(name: 'Dipankar', isSelected: false));
userList.add(Modal(name: 'Sajib', isSelected: false));
userList.add(Modal(name: 'Shanto', isSelected: false));
userList.add(Modal(name: 'Pranto', isSelected: false));
super.initState();
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('ListView Demu'),
),
body: Center(
child: Container(
child: ListView.builder(
itemCount: userList.length,
itemBuilder: (context, index) {
return Container(
padding: EdgeInsets.all(10),
height: 50,
width: MediaQuery
.of(context)
.size
.width * 0.8,
color: Colors.yellowAccent,
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
userList[index].name,
),
Positioned(
child: IconButton(
icon: _iconControl( userList[index].isSelected),
onPressed: () {
setState(() {
userList.forEach((element) {
element.isSelected = false;
});
userList[index].isSelected = true;
});
},
),
),
],
),
);
},
),
)),
);
}
_iconControl(bool like) {
if (like == false) {
return Icon(Icons.favorite_border);
} else {
return Icon(
Icons.favorite,
color: Colors.red,
);
}
}
}
class Modal {
String name;
bool isSelected;
Modal({this.name, this.isSelected = false});
}