Last active
November 19, 2019 16:59
-
-
Save legalcodes/b8c7618317d04833dc8941df27f0529d to your computer and use it in GitHub Desktop.
Vanilla Animated Container
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import 'dart:math'; | |
import 'package:flutter/material.dart'; | |
import 'package:flutter_test/flutter_test.dart'; | |
double randomBorderRadius() { | |
return Random().nextDouble() * 64; | |
} | |
double randomMargin() { | |
return Random().nextDouble() * 64; | |
} | |
Color randomColor() { | |
return Color(0xFFFFFFFF & Random().nextInt(0xFFFFFFFF)); | |
} | |
class AnimatedContainerDemo extends StatefulWidget { | |
_AnimatedContainerDemoState createState() => _AnimatedContainerDemoState(); | |
} | |
class _AnimatedContainerDemoState extends State<AnimatedContainerDemo> { | |
Color color; | |
double borderRadius; | |
double margin; | |
@override | |
initState() { | |
color = randomColor(); | |
borderRadius = randomBorderRadius(); | |
margin = randomMargin(); | |
} | |
@override | |
Widget build(BuildContext context) { | |
return Scaffold( | |
body: Center( | |
child: Column( | |
children: <Widget>[ | |
SizedBox( | |
width: 128, | |
height: 128, | |
child: Container( | |
margin: EdgeInsets.all(margin), | |
decoration: BoxDecoration( | |
color: color, | |
borderRadius: BorderRadius.circular(borderRadius), | |
), | |
), | |
), | |
MaterialButton( | |
color: Theme.of(context).primaryColor, | |
child: Text( | |
'change', | |
style: TextStyle(color: Colors.white), | |
), | |
onPressed: () => null, | |
), | |
], | |
), | |
), | |
); | |
} | |
} | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
return MaterialApp( | |
debugShowCheckedModeBanner: false, | |
home: AnimatedContainerDemo(), | |
); | |
} | |
} | |
Future<void> main() async { | |
runApp(MyApp()); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment