draggable_bottom_sheet 0.0.1

A new Flutter package project.

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.

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.

Argument	Value	Description
alignment	Alignment	Alignment of the sheet
backgroundWidget	Widget	This widget will hide behind the sheet when expanded.
blurBackground	Boolean	Whether to blur the background while sheet expnasion (true: modal-sheet, false: persistent-sheet)
expandedChild	Widget	Child of expended sheet
expansionExtent	Double	Extent from the min-height to change from previewChild to expandedChild
maxEntent	Double	Max-extent for sheet expansion
minEntent	Double	Min-extent for the sheet, also the original height of the sheet
previewChild	Widget	Child to be displayed when sheet is not expended
scrollDirection	Axis	Scroll direction of the sheet