Add Material touch ripples
Widgets that follow the Material Design guidelines display a ripple animation when tapped.
Flutter provides the
InkWell
widget to perform this effect. Create a ripple effect using
the following steps:
- Create a widget that supports tap.
- Wrap it in an
InkWell
widget to manage tap callbacks and ripple animations.
// The InkWell wraps the custom flat button widget.
InkWell(
// When the user taps the button, show a snackbar.
onTap: () {
Scaffold.of(context).showSnackBar(SnackBar(
content: Text('Tap'),
));
},
child: Container(
padding: EdgeInsets.all(12.0),
child: Text('Flat Button'),
),
);
Complete example
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
final title = 'InkWell Demo';
return MaterialApp(
title: title,
home: MyHomePage(title: title),
);
}
}
class MyHomePage extends StatelessWidget {
final String title;
MyHomePage({Key key, this.title}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(title),
),
body: Center(child: MyButton()),
);
}
}
class MyButton extends StatelessWidget {
@override
Widget build(BuildContext context) {
// The InkWell wraps the custom flat button widget.
return InkWell(
// When the user taps the button, show a snackbar.
onTap: () {
Scaffold.of(context).showSnackBar(SnackBar(
content: Text('Tap'),
));
},
child: Container(
padding: EdgeInsets.all(12.0),
child: Text('Flat Button'),
),
);
}
}