Created
January 23, 2023 02:56
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Flutter Responsive Layout App
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import 'package:flutter/material.dart'; | |
var defaultBackgroundColor = Colors.grey[300]; | |
var appBarColor = Colors.grey[900]; | |
var myAppBar = AppBar( | |
backgroundColor: appBarColor, | |
title: const Text(' '), | |
centerTitle: false, | |
); | |
var drawerTextColor = TextStyle( | |
color: Colors.grey[600], | |
); | |
var tilePadding = const EdgeInsets.only(left: 8.0, right: 8, top: 8); | |
var myDrawer = Drawer( | |
backgroundColor: Colors.grey[300], | |
elevation: 0, | |
child: Column( | |
children: [ | |
const DrawerHeader( | |
child: Icon(Icons.favorite, size: 64), | |
), | |
Padding( | |
padding: tilePadding, | |
child: ListTile( | |
leading: const Icon(Icons.home), | |
title: Text('Dashboard', style: drawerTextColor), | |
), | |
), | |
], | |
), | |
); | |
void main() { | |
runApp(const MyApp()); | |
} | |
class MyApp extends StatelessWidget { | |
const MyApp({Key? key}) : super(key: key); | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
debugShowCheckedModeBanner: false, | |
theme: ThemeData(primarySwatch: Colors.green), | |
home: const ResponsiveLayout( | |
mobileBody: MobileScaffold(), | |
tabletBody: TabletScaffold(), | |
desktopBody: DesktopScaffold(), | |
), | |
); | |
} | |
} | |
class ResponsiveLayout extends StatelessWidget { | |
final Widget mobileBody; | |
final Widget tabletBody; | |
final Widget desktopBody; | |
const ResponsiveLayout({ | |
required this.mobileBody, | |
required this.tabletBody, | |
required this.desktopBody, | |
}); | |
@override | |
Widget build(BuildContext context) { | |
return LayoutBuilder( | |
builder: (context, constraints) { | |
if (constraints.maxWidth < 500) { | |
return mobileBody; | |
} else if (constraints.maxWidth < 1100) { | |
return tabletBody; | |
} else { | |
return desktopBody; | |
} | |
}, | |
); | |
} | |
} | |
class MobileScaffold extends StatefulWidget { | |
const MobileScaffold({Key? key}) : super(key: key); | |
@override | |
State<MobileScaffold> createState() => _MobileScaffoldState(); | |
} | |
class _MobileScaffoldState extends State<MobileScaffold> { | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
backgroundColor: defaultBackgroundColor, | |
appBar: myAppBar, | |
drawer: myDrawer, | |
body: Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Column( | |
children: [ | |
// first 4 boxes in grid | |
AspectRatio( | |
aspectRatio: 1, | |
child: SizedBox( | |
width: double.infinity, | |
child: GridView.builder( | |
itemCount: 4, | |
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount( | |
crossAxisCount: 2), | |
itemBuilder: (context, index) { | |
return MyBox(); | |
}, | |
), | |
), | |
), | |
// list of previous days | |
Expanded( | |
child: ListView.builder( | |
itemCount: 4, | |
itemBuilder: (context, index) { | |
return const MyTile(); | |
}, | |
), | |
), | |
], | |
), | |
), | |
); | |
} | |
} | |
class TabletScaffold extends StatefulWidget { | |
const TabletScaffold({Key? key}) : super(key: key); | |
@override | |
State<TabletScaffold> createState() => _TabletScaffoldState(); | |
} | |
class _TabletScaffoldState extends State<TabletScaffold> { | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
backgroundColor: defaultBackgroundColor, | |
appBar: myAppBar, | |
drawer: myDrawer, | |
body: Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Column( | |
children: [ | |
// first 4 boxes in grid | |
AspectRatio( | |
aspectRatio: 4, | |
child: SizedBox( | |
width: double.infinity, | |
child: GridView.builder( | |
itemCount: 4, | |
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount( | |
crossAxisCount: 4), | |
itemBuilder: (context, index) { | |
return MyBox(); | |
}, | |
), | |
), | |
), | |
// list of previous days | |
Expanded( | |
child: ListView.builder( | |
itemCount: 6, | |
itemBuilder: (context, index) { | |
return const MyTile(); | |
}, | |
), | |
), | |
], | |
), | |
), | |
); | |
} | |
} | |
class DesktopScaffold extends StatefulWidget { | |
const DesktopScaffold({Key? key}) : super(key: key); | |
@override | |
State<DesktopScaffold> createState() => _DesktopScaffoldState(); | |
} | |
class _DesktopScaffoldState extends State<DesktopScaffold> { | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
backgroundColor: defaultBackgroundColor, | |
appBar: myAppBar, | |
body: Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Row( | |
crossAxisAlignment: CrossAxisAlignment.start, | |
children: [ | |
// open drawer | |
myDrawer, | |
// first half of page | |
Expanded( | |
flex: 2, | |
child: Column( | |
children: [ | |
// first 4 boxes in grid | |
AspectRatio( | |
aspectRatio: 4, | |
child: SizedBox( | |
width: double.infinity, | |
child: GridView.builder( | |
itemCount: 4, | |
gridDelegate: | |
const SliverGridDelegateWithFixedCrossAxisCount( | |
crossAxisCount: 4), | |
itemBuilder: (context, index) { | |
return MyBox(); | |
}, | |
), | |
), | |
), | |
// list of previous days | |
Expanded( | |
child: ListView.builder( | |
itemCount: 7, | |
itemBuilder: (context, index) { | |
return const MyTile(); | |
}, | |
), | |
), | |
], | |
), | |
), | |
// second half of page | |
Expanded( | |
child: Column( | |
children: [ | |
Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Container( | |
height: 400, | |
decoration: BoxDecoration( | |
borderRadius: BorderRadius.circular(8), | |
color: Colors.grey[400], | |
), | |
), | |
), | |
// list of stuff | |
Expanded( | |
child: Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Container( | |
decoration: BoxDecoration( | |
borderRadius: BorderRadius.circular(8), | |
color: Colors.grey[200], | |
), | |
), | |
), | |
), | |
], | |
), | |
), | |
], | |
), | |
), | |
); | |
} | |
} | |
class MyBox extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return Padding( | |
padding: const EdgeInsets.all(8), | |
child: Container( | |
decoration: BoxDecoration( | |
borderRadius: BorderRadius.circular(8), | |
color: Colors.grey[400], | |
), | |
child: Center( | |
child: Text( | |
DateTime.now().second.toString(), | |
), | |
), | |
), | |
); | |
} | |
} | |
class MyTile extends StatelessWidget { | |
const MyTile({Key? key}) : super(key: key); | |
@override | |
Widget build(BuildContext context) { | |
return Padding( | |
padding: const EdgeInsets.all(8.0), | |
child: Container( | |
height: 78, | |
decoration: BoxDecoration( | |
borderRadius: BorderRadius.circular(8), | |
color: Colors.grey[200], | |
), | |
child: Center( | |
child: Text( | |
DateTime.now().second.toString(), | |
), | |
), | |
), | |
); | |
} | |
} |
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