DraggableBottomSheet

This is a bottom sheet that is partially visible onto the screen and can be dragged from there into the screen to occupy the fullscreen.

Draggable Bottom Sheet gif

Get Started

Add dependencies

draggable_bottom_sheet:

import package

import 'package:draggable_bottom_sheet/draggable_bottom_sheet.dart';

Example

import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:draggable_bottom_sheet/draggable_bottom_sheet.dart';

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: DraggableBottomSheetExample(title: 'Draggable Bottom Sheet Example'),
      debugShowCheckedModeBanner: false,
    );
  }
}

class DraggableBottomSheetExample extends StatelessWidget {
  DraggableBottomSheetExample({Key key, this.title}) : super(key: key);
  final String title;

  @override
  Widget build(BuildContext context) {
    List<IconData> icons = [Icons.ac_unit, Icons.account_balance, Icons.adb, Icons.add_photo_alternate, Icons.format_line_spacing];
    
    return Scaffold(
      body: DraggableBottomSheet(
        backgroundWidget: Scaffold(
          backgroundColor: Colors.white,
          appBar: AppBar(title: Text(title), backgroundColor: Colors.deepOrange,),
          body: Container(
            height: 400,
            child: ListView.separated(
              scrollDirection: Axis.horizontal,
              padding: EdgeInsets.symmetric(vertical: 32),
              itemCount: icons.length,
              itemBuilder: (context, index) => Container(
                width: MediaQuery.of(context).size.width * 0.7,
                height: 200,
                decoration: BoxDecoration(
                  color: Colors.grey,
                  borderRadius: BorderRadius.circular(20)
                ),
                child: Icon(icons[index], color: Colors.white, size: 60,),
              ),
              separatorBuilder: (context, index) => SizedBox(width: 10),
            ),
          ),
        ),
        previewChild: Container(
          padding: EdgeInsets.all(16),
          decoration: BoxDecoration(
            color: Colors.pink,
            borderRadius: BorderRadius.only(topLeft: Radius.circular(20), topRight: Radius.circular(20))
          ),
          child: Column(
            children: <Widget>[
              Container(
                width: 40,
                height: 6,
                decoration: BoxDecoration(
                  color: Colors.white,
                  borderRadius: BorderRadius.circular(10)
                ),
              ),
              SizedBox(height: 8,),
              Text('Drag Me', style: TextStyle(color: Colors.white, fontSize: 16, fontWeight: FontWeight.bold),),
              SizedBox(height: 16,),
              Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: icons.map((icon){
                  return Container(
                    width: 50,
                    height: 50,
                    margin: EdgeInsets.only(right: 16),
                    child: Icon(icon, color: Colors.pink, size: 40,),
                    decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(10)
                    ),
                  );
                }).toList()
              )
            ],
          ),
        ),
        expandedChild: Container(
          padding: EdgeInsets.all(16),
          decoration: BoxDecoration(
            color: Colors.pink,
            borderRadius: BorderRadius.only(topLeft: Radius.circular(20), topRight: Radius.circular(20))
          ),
          child: Column(
            children: <Widget>[
              Icon(Icons.keyboard_arrow_down, size: 30, color: Colors.white,),
              SizedBox(height: 8,),
              Text('Hey...I\'m expanding!!!', style: TextStyle(color: Colors.white, fontSize: 16, fontWeight: FontWeight.bold),),
              SizedBox(height: 16,),
              Expanded(
                child: GridView.builder(
                  itemCount: icons.length,
                  gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
                    crossAxisCount: 2,
                    crossAxisSpacing: 10,
                    mainAxisSpacing: 10,
                  ), 
                  itemBuilder: (context, index) => Container(
                    decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(10)
                    ),
                    child: Icon(icons[index], color: Colors.pink, size: 40,),
                  )
                ),
              )
            ],
          ),
        ),
        minExtent: 150,
        maxExtent: MediaQuery.of(context).size.height * 0.8,
      )
    );
  }
}

Arguments

Description of DraggableBottomSheet arguments.

ArgumentValueDescription
alignmentAlignmentAlignment of the sheet
backgroundWidgetWidgetThis widget will hide behind the sheet when expanded.
blurBackgroundBooleanWhether to blur the background while sheet expnasion (true: modal-sheet, false: persistent-sheet)
expandedChildWidgetChild of expended sheet
expansionExtentDoubleExtent from the min-height to change from previewChild to expandedChild
maxEntentDoubleMax-extent for sheet expansion
minEntentDoubleMin-extent for the sheet, also the original height of the sheet
previewChildWidgetChild to be displayed when sheet is not expended
scrollDirectionAxisScroll direction of the sheet

Libraries

draggable_bottom_sheet