To hide the scrollbar in a Flutter `SingleChildScrollView`, you can use a custom `ScrollBehavior` along with a `RawScrollbar` widget. The `ScrollBehavior` allows you to modify the appearance and behavior of a scrollable widget, while the `RawScrollbar` widget displays the scrollbar on demand.
Here’s an example of how you can achieve this:
“`dart
import ‘package:flutter/material.dart’;
import ‘package:flutter/rendering.dart’;
void main() {
runApp(MyApp());
}
class CustomScrollBehavior extends ScrollBehavior {
@override
Widget buildScrollbar(BuildContext context, Widget child, ScrollableDetails details) {
return child;
}
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: Scrollbar(
child: SingleChildScrollView(
scrollDirection: Axis.vertical,
physics: BouncingScrollPhysics(),
child: Container(
height: 1000, // Example content height
color: Colors.grey[200],
child: Center(
child: Text(
‘Scrollable Content’,
style: TextStyle(fontSize: 30),
),
),
),
),
),
),
);
}
}
“`
In this example, we define a custom `CustomScrollBehavior` class by extending `ScrollBehavior`. This class overrides the `buildScrollbar` method, and returns the child widget as it is, effectively hiding the scrollbar.
Inside the `MyApp` class, we use the `Scrollbar` widget to wrap the `SingleChildScrollView`. The `Scrollbar` widget provides an interactive scrollbar that appears when scrolling. The child of `Scrollbar` is the `SingleChildScrollView` itself, with a vertical scroll direction, bouncing scroll physics, and a container containing the scrollable content.
Remember to do the necessary imports of the required packages: `flutter/material.dart` and `flutter/rendering.dart`.
Make sure to run your application or hot reload to see the changes. Now, the scrollbar of the `SingleChildScrollView` will be hidden.
This is just one approach to hide the scrollbar in a `SingleChildScrollView`. There are other methods like modifying the theme or using a `ListView` instead, depending on your requirements. However, this is a simple and effective way to achieve the desired behavior.