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C# 코드 + XAML 태그로 구성되어 있습니다.
Xamarin Forms로 만들면 원소스를 아이폰, 안드로이드폰, 윈도우폰 등에서 사용할 수 있습니다.
MainPage.xaml 의 태그들
<?xml version="1.0" encoding="UTF-8"?>
<ContentPage
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Calculator.MainPage">
<Grid Padding="5,0" RowSpacing="1"
ColumnSpacing="1" BackgroundColor="Black">
<Grid.RowDefinitions>
<Grid.RowDefinition Height="2*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Label FontAttributes="Bold"
FontSize="48"
BackgroundColor="Black" Text="0"
TextColor="White"
HorizontalTextAlignment="End"
VerticalTextAlignment="Center"
LineBreakMode="NoWrap" Grid.ColumnSpan="4" />
<Button Text="7" Grid.Row="1" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="8" Grid.Row="1" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="9" Grid.Row="1" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="4" Grid.Row="2" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="5" Grid.Row="2" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="6" Grid.Row="2" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="1" Grid.Row="3" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="2" Grid.Row="3" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="3" Grid.Row="3" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="0" Grid.Row="4" Grid.Column="0" Grid.ColumnSpan="3"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0" />
<Button Text="/" Grid.Row="1" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0" />
<Button Text="X" Grid.Row="2" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0" />
<Button Text="-" Grid.Row="3" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0" />
<Button Text="+" Grid.Row="4" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0" />
<Button Text="C" Grid.Row="5" Grid.Column="0"
BackgroundColor="#808080" TextColor="White"
FontSize="36" BorderRadius="0" />
<Button Text="=" Grid.Row="5" Grid.Column="1" Grid.ColumnSpan="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0" />
</Grid>
</ContentPage>
(이벤트를 모두 연결한 MainPage.xaml 코드)
<?xml version="1.0" encoding="UTF-8"?>
<ContentPage
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Calculator.MainPage">
<Grid Padding="5,0" RowSpacing="1"
ColumnSpacing="1" BackgroundColor="Black">
<Grid.RowDefinitions>
<RowDefinition Height="2*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Label x:Name="resultText"
FontAttributes="Bold"
FontSize="48"
BackgroundColor="Black" Text="0"
TextColor="White"
HorizontalTextAlignment="End"
VerticalTextAlignment="Center"
LineBreakMode="NoWrap" Grid.ColumnSpan="4" />
<Button Text="7" Grid.Row="1" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="8" Grid.Row="1" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="9" Grid.Row="1" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="4" Grid.Row="2" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="5" Grid.Row="2" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="6" Grid.Row="2" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="1" Grid.Row="3" Grid.Column="0"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="2" Grid.Row="3" Grid.Column="1"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="3" Grid.Row="3" Grid.Column="2"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="0" Grid.Row="4" Grid.Column="0" Grid.ColumnSpan="3"
BackgroundColor="White" TextColor="Black"
FontSize="36" BorderRadius="0"
Clicked="OnSelectNumber" />
<Button Text="/" Grid.Row="1" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnSelectOperator" />
<Button Text="X" Grid.Row="2" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnSelectOperator" />
<Button Text="-" Grid.Row="3" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnSelectOperator" />
<Button Text="+" Grid.Row="4" Grid.Column="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnSelectOperator" />
<Button Text="C" Grid.Row="5" Grid.Column="0"
BackgroundColor="#808080" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnClear" />
<Button Text="=" Grid.Row="5" Grid.Column="1" Grid.ColumnSpan="3"
BackgroundColor="#FFA500" TextColor="White"
FontSize="36" BorderRadius="0"
Clicked="OnCalculate" />
</Grid>
</ContentPage>
(로직이 모두 추가된 MainPage.xaml.cs파일)
using System;
using System.Collections.Generic;
using Xamarin.Forms;
namespace Calculator
{
public partial class MainPage : ContentPage
{
int currentState = 1;
string mathOperator;
double firstNumber, secondNumber;
public MainPage()
{
InitializeComponent();
//reset하는 코드추가
OnClear(this, null);
}
void OnSelectNumber(object sender, EventArgs e)
{
Button button = (Button)sender;
string pressed = button.Text;
if (this.resultText.Text == "0" || currentState < 0)
{
this.resultText.Text = "";
if (currentState < 0)
currentState *= -1;
}
this.resultText.Text += pressed;
double number;
if (double.TryParse(this.resultText.Text, out number))
{
this.resultText.Text = number.ToString("N0");
if (currentState == 1)
{
firstNumber = number;
}
else
{
secondNumber = number;
}
}
}
void OnSelectOperator(object sender, EventArgs e)
{
currentState = -2;
Button button = (Button)sender;
string pressed = button.Text;
mathOperator = pressed;
}
void OnClear(object sender, EventArgs e)
{
firstNumber = 0;
secondNumber = 0;
currentState = 1;
this.resultText.Text = "0";
}
void OnCalculate(object sender, EventArgs e)
{
if (currentState == 2)
{
var result = SimpleCalculator.Calculate(firstNumber, secondNumber, mathOperator);
this.resultText.Text = result.ToString("N0");
firstNumber = result;
currentState = -1;
}
}
}
}
(SharedResources.cs파일)
using System;
using Xamarin.Forms;
namespace Calculator
{
public static class SharedResources
{
public static Color OpButtonBkColor
{
get { return Color.FromRgb(0xff, 0xa5, 0); }
}
}
}
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