1 | initial version |
You can navigate to a specific section on a Single Page Application using Flutter scrolling technique by following these steps:
Here is an example code snippet that demonstrates how to navigate to a specific section on a Single Page Application using Flutter scrolling technique:
import 'package:flutter/material.dart';
import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
class MySinglePageApp extends StatelessWidget {
final ItemScrollController scrollController = ItemScrollController();
final ItemPositionsListener itemPositionsListener =
ItemPositionsListener.create();
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('My Single Page App'),
),
body: SafeArea(
child: SingleChildScrollView(
child: Column(
children: <Widget>[
SizedBox(height: 20.0),
Text(
'Scroll to a Specific Section',
style: TextStyle(fontSize: 20.0, fontWeight: FontWeight.bold),
),
SizedBox(height: 20.0),
Container(
height: 200.0,
child: ScrollablePositionedList.builder(
itemCount: 5,
itemBuilder: (BuildContext context, int index) {
return Container(
key: Key('item$index'),
margin: EdgeInsets.all(10.0),
color: Colors.grey[300],
child: Center(
child: Text(
'Item $index',
style: TextStyle(fontSize: 30.0),
),
),
);
},
itemScrollController: scrollController,
itemPositionsListener: itemPositionsListener,
),
),
SizedBox(height: 20.0),
Text(
'Scroll to a Section',
style: TextStyle(fontSize: 20.0, fontWeight: FontWeight.bold),
),
SizedBox(height: 10.0),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
RaisedButton(
onPressed: () => _scrollToIndex(0),
child: Text('Item 0'),
),
RaisedButton(
onPressed: () => _scrollToIndex(1),
child: Text('Item 1'),
),
RaisedButton(
onPressed: () => _scrollToIndex(2),
child: Text('Item 2'),
),
RaisedButton(
onPressed: () => _scrollToIndex(3),
child: Text('Item 3'),
),
RaisedButton(
onPressed: () => _scrollToIndex(4),
child: Text('Item 4'),
),
],
),
],
),
),
),
);
}
void _scrollToIndex(int index) {
scrollController.scrollTo(
index: index, duration: Duration(seconds: 1), curve: Curves.easeInOut);
}
}
In this example, we have used the ScrollablePositionedList package to create a list of scrollable widgets. We also added a Scrollbar widget to show the list of scrollable widgets. We implemented an onTap() function to navigate to the specific widget using the scrollTo() method of ItemScrollController. By clicking on a specific button, we can navigate to the corresponding section of the single page application.