how to change properties of list tile from its onTap() function in flutter? - flutter

Question

leading: GestureDetector(
behavior: HitTestBehavior.translucent,
onTap: () {
// There I want to change title, background color etc
},
),
title: Text('title'),
dense: false,
),
I want to change properties of list tile from its own onTap()

Answer 1

You can copy paste run full code below
You can use StatefulWidget and call setState inside onTap
code snippet
class _ListTileCustomState extends State<ListTileCustom> {
String _title = "title";
Color _color = Colors.blue;
#override
Widget build(BuildContext context) {
return ListTile(
tileColor: _color,
leading: GestureDetector(
behavior: HitTestBehavior.translucent,
onTap: () {
setState(() {
_title = "changed";
_color = Colors.red;
});
},
child: Icon(Icons.add)),
title: Text(_title),
dense: false,
);
}
}
working demo
full code
import 'package:flutter/material.dart';
class ListTileCustom extends StatefulWidget {
#override
_ListTileCustomState createState() => _ListTileCustomState();
}
class _ListTileCustomState extends State<ListTileCustom> {
String _title = "title";
Color _color = Colors.blue;
#override
Widget build(BuildContext context) {
return ListTile(
tileColor: _color,
leading: GestureDetector(
behavior: HitTestBehavior.translucent,
onTap: () {
setState(() {
_title = "changed";
_color = Colors.red;
});
},
child: Icon(Icons.add)),
title: Text(_title),
dense: false,
);
}
}
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ListTileCustom(),
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}

Answer 2

you can define one variable before build a method and use that variable to the title of listtile and when you ontap then change the state using setState and It will change the title of your listtie.
leading: GestureDetector(
behavior: HitTestBehavior.translucent,
onTap: () {
setState((){
title="your text"
});
},
),
title: Text(title),
dense: false,
),
here title is variable
and ListTile also has property of onTap