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@granoeste
Created Oct 8, 2020
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Custom Dialog Demo
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Custom Dialog Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Custom Dialog Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
void _showDialog() {
var height = MediaQuery.of(context).size.height;
var width = MediaQuery.of(context).size.width;
var minWidth = (width > 720 ? width * 0.50 : width * 0.70);
showDialog(
context: context,
builder: (_) => SimpleDialog(
contentPadding:
EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
children: <Widget>[
CircleAvatar(
child: Icon(Icons.alarm, size: 48.0), minRadius: 36.0),
SizedBox(height: 8.0),
ConstrainedBox(
constraints: BoxConstraints(
minWidth: minWidth,
),
child: Column(
children: [
Text('TitleTitleTitleTitleTitle',
style: Theme.of(context).textTheme.headline5),
SizedBox(height: 8.0),
Text(
'DescriptionDescriptionDescriptionDescriptionDescriptionDescription',
style: Theme.of(context).textTheme.bodyText1,
),
SizedBox(height: 8.0),
Container(
padding: EdgeInsets.all(8.0),
width: 200.0,
color: Colors.lightBlue,
child: Column(
children: [
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(width: 100.0, child: Text('height:')),
Expanded(
child: Text('$height',
textAlign: TextAlign.right),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(width: 100.0, child: Text('width:')),
Expanded(
child: Text('$width',
textAlign: TextAlign.right),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
width: 100.0, child: Text('minWidth:')),
Expanded(
child: Text('${minWidth.toStringAsFixed(1)}',
textAlign: TextAlign.right),
),
],
),
],
),
),
SizedBox(height: 8.0),
Text(
'AnnotationAnnotation',
style: Theme.of(context).textTheme.headline4,
),
RaisedButton(
onPressed: () {},
child: Text('OK'),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(45.0)),
),
),
],
),
),
],
));
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Container(),
floatingActionButton: FloatingActionButton(
onPressed: _showDialog,
tooltip: 'ShowDialog',
child: Icon(Icons.send),
),
);
}
}
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