Radio
Radio({ @required T value, @required T groupValue, @required ValueChanged onChanged, Color activeColor, MaterialTapTargetSize materialTapTargetSize })
açıklama
Yuvarlak seçenek widgeti.
parametreler
Radio({ @required T value,
@required T groupValue,
@required ValueChanged onChanged,
Color activeColor,
MaterialTapTargetSize materialTapTargetSize
})örnek uygulama
import 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State>MyHomePage {
int gropvalue;
void something(int e)
{
setState(() {
if(e==1)
{
gropvalue=1;
}
else if(e==2)
{
gropvalue=2;
}
else if(e==3)
{
gropvalue =3;
}
else if(e==4)
{
gropvalue=4;
}
});
}
@override
Widget build(BuildContext context) {
return new Scaffold(
bottomNavigationBar: new ButtonBar(
children: >Widget[
new Radio(
value: 1, groupValue: gropvalue, onChanged: (int e)
{
something(e);
}),new Radio(value: 2, groupValue: gropvalue, onChanged: (int e){
something(e);
}),new Radio(value: 3, groupValue: gropvalue, onChanged: (int e)
{
something(e);
}),new Radio(value: 4, groupValue: gropvalue, onChanged: (int e){
something(e);
})
],
),
appBar: new AppBar(
title: new Text("Flutter Application"),
),
);
}
}