Output Screen
Source Code
Source Code
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
var text = ["CNY", "JPY", "MYR", "EUR", "HYD", "JPY", "AUD", "MYR", "NZD"];
int count = 0;
changetext(int textCount) {
setState(() {
count = textCount;
});
}
TextEditingController input = TextEditingController();
TextEditingController output = TextEditingController();
void botton_pressed(String bottonText) {
setState(() {
changetext(count);
output.text="Please Enter Valid Number";
return;
});
switch (bottonText) {
case "CNY": output.text= ((double.parse(input.text))*10.79).toString();
break;
case "JPY": output.text = ((double.parse(input.text))*15.69).toString();
break;
case "MYR": output.text = ((double.parse(input.text))*55.79).toString();
break;
case "EUR": output.text = ((double.parse(input.text))*90.79).toString();
break;
case "HYD": output.text = ((double.parse(input.text))*20.79).toString();
break;
case "JPY": output.text = ((double.parse(input.text))*50.79).toString();
break;
case "AUD": output.text = ((double.parse(input.text))*5.79).toString();
break;
case "MYR": output.text = ((double.parse(input.text))*0.79).toString();
break;
case "NZD": output.text = ((double.parse(input.text))*0.79).toString();
break;
}
}
Widget buildBotton(String bottonText,int i) {
return MaterialButton(
shape:
RoundedRectangleBorder(borderRadius: new BorderRadius.circular(12)),
onPressed: () {
botton_pressed(bottonText);
changetext(i);
},
child: Text(bottonText,
style: TextStyle(
fontSize: 18,
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
color: Color(0xFFF7CA18),
splashColor: Colors.red,
);
}
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: "Currency Converter",
home: Scaffold(
backgroundColor: Color(0xFF51008c),
body: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
margin: EdgeInsets.fromLTRB(90, 20, 0, 0),
padding: new EdgeInsets.only(top: 92.0),
child: Text(
"Currency Converter",
style: TextStyle(
fontSize: 48,
fontWeight: FontWeight.bold,
color: Colors.white,
),
),
),
Container(
margin: EdgeInsets.only(),
padding: EdgeInsets.all(25),
child: TextFormField(
controller: input,
keyboardType: TextInputType.number,
decoration: new InputDecoration(
filled: true,
fillColor: Colors.grey,
labelText: "Amount In INR",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Container(
margin: EdgeInsets.only(),
padding: EdgeInsets.all(25),
child: TextFormField(
controller: output,
decoration: new InputDecoration(
filled: true,
fillColor: Colors.grey,
labelText: "Result",
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10),
),
),
),
),
Text(
text[count],
style: TextStyle(
fontSize: 30.0,
color: Colors.white,
fontWeight: FontWeight.bold,
),
),
SizedBox(height: 28.0),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
buildBotton(text[0],0),
buildBotton(text[1],1),
buildBotton(text[2],2),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
buildBotton(text[3],3),
buildBotton(text[4],4),
buildBotton(text[5],5),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
buildBotton(text[6],6),
buildBotton(text[7],7),
buildBotton(text[8],8),
],
),
],
),
),
),
);
}
}
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