SimpleDialog
SimpleDialog({ Widget title, List children, Color backgroundColor, double elevation, String semanticLabel, ShapeBorder shape })
açıklama
Basit iletişim kutusu oluşturur.Örneğin bir seçim listesi sunabilir.
parametreler
SimpleDialog(
title: const Text('Select assignment'),
children: [
SimpleDialogOption(
onPressed: () { Navigator.pop(context, Department.treasury); },
child: const Text('Treasury department'),
),
SimpleDialogOption(
onPressed: () { Navigator.pop(context, Department.state); },
child: const Text('State department'),
),
],
); örnek uygulama
import 'package:flutter/material.dart';
import 'dart:async';
void main() {
runApp(new MaterialApp(
home: new MyApp()
));
}
class MyApp extends StatefulWidget {
@override
_State createState() => new _State();
}
enum Answers{YES, NO, MAYBE}
class _State extends State {
String _value = '';
void _setValue(String value) => setState(() => _value = value);
Future _askUser() async {
switch(
await showDialog(
context: context,
child: new SimpleDialog(
title: new Text("Do you like flutter?"),
children: [
new SimpleDialogOption(
child: new Text("Yes"),
onPressed: (){
Navigator.pop(context, Answers.YES);
},
),
new SimpleDialogOption(
child: new Text("No"),
onPressed: (){
Navigator.pop(context, Answers.NO);
},
),
new SimpleDialogOption(
child: new Text("Maybe"),
onPressed: (){
Navigator.pop(context, Answers.MAYBE);
},
)
],
)
)
) {
case Answers.YES:
_setValue('Yes');
break;
case Answers.NO:
_setValue("No");
break;
case Answers.MAYBE:
_setValue("Maybe");
break;
}
}
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Name here'),
),
body: new Container(
padding: new EdgeInsets.all(32.0),
child: new Center(
child: new Column(
children: [
new Text(_value),
new RaisedButton(onPressed: () => _askUser(), child: new Text("Click me"),)
],
),
),
),
);
}
}