Navigation - DraggableScrollableSheet

 DraggableScrollableSheet

Source Code

import 'package:flutter/material.dart';


void main() {
  runApp(  MaterialApp(
    title:" DraggableScrollableSheet ",
    home:Scaffold(appBar: AppBar(title: Text(' DraggableScrollableSheet ',),),
      body: Material(
        child: Center(
          child:
          DraggableScrollableSheetExample()
          ,
        ),
      ) ,
    ),
  ));
}




class DraggableScrollableSheetExample extends StatelessWidget {
  const DraggableScrollableSheetExample({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('DraggableScrollableSheet'),
      ),
      body: Stack(
        children: <Widget>[
          SizedBox.expand(
            child: Container(
              color: Colors.red,
            ),
          ),
          _buildDraggableScrollableSheet(),
        ],
      ),
    );
  }

  DraggableScrollableSheet _buildDraggableScrollableSheet() {
    return DraggableScrollableSheet(
      initialChildSize: 0.2,
      minChildSize: 0.2,
      maxChildSize: 0.8,
      builder: (BuildContext context, ScrollController scrollController) {
        return Container(
          decoration: const BoxDecoration(
            color: Colors.blue,
            // border: Border.all(color: Colors.blue, width: 2),
            borderRadius: BorderRadius.only(
              topLeft: Radius.circular(8),
              topRight: Radius.circular(8),
            ),
          ),
          child: Scrollbar(
            child: ListView.builder(
              controller: scrollController,
              itemCount: 25,
              itemBuilder: (BuildContext context, int index) {
                return ListTile(
                  leading: const Icon(Icons.ac_unit),
                  title: Text('Item $index'),
                );
              },
            ),
          ),
        );
      },
    );
  }
}