iOS计算器的代码实现
//QQ:2810418812@qq.com
// ViewController.h
// 计算器
// Created by ccj on 15/12/2.
// Copyright © 2015年 ccj. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@property(nonatomic,strong)UIButton *button;
@property(nonatomic,strong)UILabel *label;
@property(nonatomic,strong)NSMutableString *string;
@property(nonatomic,assign)double num1,num2,value;
@property(nonatomic,strong)NSMutableString *str;
@property(nonatomic,assign)int number;
@end
//
// ViewController.m
// 计算器
//
// Created by ccj on 15/12/2.
// Copyright © 2015年 ccj. All rights reserved.
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
-(NSMutableString *)string
{
if(_string==nil)
{
_string=[NSMutableString string];
}
return _string;
}
-(NSMutableString *)str
{
if(_str==nil)
{
_str=[[NSMutableString alloc]initWithString:@""];
}
return _str;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.number=0;
CGFloat buttonWidth=self.view.bounds.size.width/4;
/**
设置label
*/
self.label=[[UILabel alloc]initWithFrame:CGRectMake(0, 50, self.view.bounds.size.width, 100)];
[self.view addSubview:_label];
self.label.backgroundColor=[UIColor grayColor];
self.label.textColor=[UIColor whiteColor];
self.label.textAlignment=NSTextAlignmentRight;
//设置文本的字体
self.label.font=[UIFont systemFontOfSize:50];
self.label.text=@"0";
self.label.layer.masksToBounds=YES;
self.label.layer.cornerRadius=10;
/**
添加数字1~9
*/
NSArray *array=[NSArray arrayWithObjects:@"1",@"4",@"7",@"2",@"5",@"8",@"3",@"6",@"9",nil];
int n=0;
for(int i=0;i<3;i++)
{
for(int j=0;j<3;j++)
{
self.button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
self.button.frame=CGRectMake(buttonWidth*i, 150+buttonWidth+buttonWidth*j, buttonWidth, buttonWidth);
[self.button setTitle:[array objectAtIndex:n++] forState:UIControlStateNormal];
[self.view addSubview:_button];
self.button.titleLabel.font=[UIFont systemFontOfSize:50];
self.button.layer.masksToBounds=YES;
self.button.layer.cornerRadius=10.0;
self.button.tintColor=[UIColor blackColor];
self.button.tintColor=[UIColor blackColor];
self.button.layer.borderWidth=1.0;
self.button.backgroundColor=[UIColor colorWithRed:223.0/255.0f green:223.0/255.0f blue:223.0/255.0f alpha:1.0];
[self.button addTarget:self action:@selector(number:) forControlEvents:UIControlEventTouchUpInside];
}
}
/**
单独添加数字0
*/
UIButton *button0=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:button0];
button0.frame=CGRectMake(0, 150+buttonWidth*4, 2*buttonWidth, buttonWidth);
[button0 setTitle:@"0" forState:UIControlStateNormal];
button0.titleLabel.font=[UIFont systemFontOfSize:50];
//tintColor
button0.tintColor=[UIColor blackColor];
button0.layer.masksToBounds=YES;
button0.layer.cornerRadius=10.0;
button0.tintColor=[UIColor blackColor];
button0.layer.borderWidth=1.0;
[button0 addTarget:self action:@selector(number:) forControlEvents:UIControlEventTouchUpInside];
button0.backgroundColor=[UIColor colorWithRed:223.0/255.0f green:223.0/255.0f blue:223.0/255.0f alpha:1.0];
/**
添加小数点.
*/
UIButton *button1=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:button1];
button1.frame=CGRectMake(2*buttonWidth, 150+buttonWidth*4, buttonWidth, buttonWidth);
[button1 setTitle:@"." forState:UIControlStateNormal];
button1.tintColor=[UIColor blackColor];
button1.titleLabel.font=[UIFont systemFontOfSize:50];
button1.layer.masksToBounds=YES;
button1.layer.cornerRadius=10.0;
button1.tintColor=[UIColor blackColor];
button1.layer.borderWidth=1.0;
button1.backgroundColor=[UIColor colorWithRed:223.0/255.0f green:223.0/255.0f blue:223.0/255.0f alpha:1.0];
[button1 addTarget:self action:@selector(number:) forControlEvents:UIControlEventTouchUpInside];
/**
添加清楚键
*/
UIButton *clearButton=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:clearButton];
clearButton.frame=CGRectMake(0, 150, 2*buttonWidth, buttonWidth);
clearButton.backgroundColor=[UIColor colorWithRed:223.0/255.0f green:223.0/255.0f blue:223.0/255.0f alpha:1.0];
[clearButton setTitle:@"AC" forState:UIControlStateNormal];
//设置边框的粗细和颜色
clearButton.tintColor=[UIColor blackColor];
clearButton.layer.masksToBounds=YES;
clearButton.layer.cornerRadius=10.0;
clearButton.layer.borderWidth=1.0;
clearButton.layer.borderColor=[UIColor blackColor].CGColor;
clearButton.titleLabel.font=[UIFont systemFontOfSize:50];
[clearButton addTarget:self action:@selector(clean:) forControlEvents:UIControlEventTouchUpInside];
/**
添加%符号
*/
UIButton *button2=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:button2];
button2.frame=CGRectMake(2*buttonWidth, 150, buttonWidth, buttonWidth);
[button2 setTitle:@"%" forState:UIControlStateNormal];
button2.tintColor=[UIColor blackColor];
button2.titleLabel.font=[UIFont systemFontOfSize:50];
button2.layer.masksToBounds=YES;
button2.layer.cornerRadius=10.0;
button2.tintColor=[UIColor blackColor];
button2.layer.borderWidth=1.0;
button2.backgroundColor=[UIColor colorWithRed:223.0/255.0 green:223.0/255.0 blue:223.0/255.0 alpha:1.0];
[button2 addTarget:self action:@selector(remberSymbol:) forControlEvents:UIControlEventTouchUpInside];
/**
添加运算符+ - * / =
*/
NSArray *arraySymbol=[NSArray arrayWithObjects:@"+",@"-",@"*",@"/",@"=",nil];
for(int i=0;i<6;i++)
{
UIButton *buttonSymbol=[UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:buttonSymbol];
[buttonSymbol setTitle:[arraySymbol objectAtIndex:i] forState:UIControlStateNormal];
buttonSymbol.frame=CGRectMake(3*buttonWidth, 150+buttonWidth*i, buttonWidth, buttonWidth);
buttonSymbol.titleLabel.font=[UIFont systemFontOfSize:50];
buttonSymbol.tintColor=[UIColor whiteColor];
buttonSymbol.layer.borderWidth=1.0;
buttonSymbol.layer.masksToBounds=YES;
buttonSymbol.layer.cornerRadius=10.0;
buttonSymbol.backgroundColor=[UIColor orangeColor];
if(i==4)
{
[buttonSymbol addTarget:self action:@selector(calculater:) forControlEvents:UIControlEventTouchUpInside];
return;
}
[buttonSymbol addTarget:self action:@selector(remberSymbol:) forControlEvents:UIControlEventTouchUpInside];
}
/**
添加正负号
*/
}
/**
数字的显示
*/
-(void)number:(id)sender
{
if(![self.str isEqualToString:@""])
{
if(self.number!=1&&self.number!=0)
{
self.num1=self.value;
}
[self.string appendString:[sender currentTitle]];
self.label.text=[NSString stringWithString:self.string];
self.num2=[self.label.text doubleValue];
NSLog(@"self.num1=%f,self.num2=%f",self.num1,self.num2);
return;
}
[self.string appendString:[sender currentTitle]];
// NSLog(@"%@",self.string);
self.label.text=[NSString stringWithString:self.string];
//将字符串转换成数字
self.num1=[self.label.text doubleValue];
NSLog(@"self.num1=%f",self.num1);
}
/**
记下所按下的+ - * /符号
*/
-(void)remberSymbol:(id)sender
{
self.number++;
//NSLog(@"%s",__func__);
[self.str setString:[sender currentTitle]];
self.label.text=@"0";
[self.string setString:@""];
}
/**
计算
*/
-(void)calculater:(id)sender
{
//NSLog(@"%s",__func__);
if([self.str isEqualToString:@"+"])
{
self.value=self.num1+self.num2;
self.label.text=[NSString stringWithFormat:@"%.2f",self.value];
}
else if([self.str isEqualToString:@"-"])
{
self.value=self.num1-self.num2;
self.label.text=[NSString stringWithFormat:@"%.2f",self.value];
}
else if([self.str isEqualToString:@"*"])
{
self.value=self.num1*self.num2;
self.label.text=[NSString stringWithFormat:@"%.2f",self.value];
}
else if([self.str isEqualToString:@"/"])
{
self.value=self.num1/self.num2;
self.label.text=[NSString stringWithFormat:@"%.2f",self.value];
}
else if([self.str isEqualToString:@"%"])
{
self.value=(int)(self.num1)%(int)self.num2;
self.label.text=[NSString stringWithFormat:@"%d",(int)self.value];
}
self.number=0;
[self.string setString:@""];
[self.str setString:@""];
self.num1=self.value;
}
/**
清除键
*/
-(void)clean:sender
{
[self.string setString:@""];
self.num1=0;
self.num2=0;
self.label.text=@"0";
[self.str setString:@""];
self.number=0;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
file:///Users/ccj/Desktop/ji.tiff
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