简易计算器

最新推荐文章于 2024-11-26 23:29:17 发布
adsl2812358
最新推荐文章于 2024-11-26 23:29:17 发布
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本文链接：https://blog.youkuaiyun.com/adsl2812358/article/details/47186815
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简易计算器,不知道为啥有一些效果和系统的不一样
//
//  RootViewController.m
//  计算器
//
//  Created by dllo on 15/8/1.
//  Copyright (c) 2015年 dllo. All rights reserved.
//

#import "RootViewController.h"

@interface RootViewController ()
@property(nonatomic, assign)double a;
@property(nonatomic, assign)double b;
@property(nonatomic, assign)double(^p)(double, double);
@property(nonatomic, retain)UILabel *label;
@property(nonatomic, assign)BOOL isOn;    // 输入前是否清零
@end

@implementation RootViewController

- (void)dealloc{
    [_label release];
    [super dealloc];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    _label = [[UILabel alloc]initWithFrame:CGRectMake(50, 50, 200, 30)];
    self.label.layer.borderWidth = 1;
    self.label.textAlignment = NSTextAlignmentRight;
    [self.view addSubview:self.label];
    [_label release];
    // 数字 0 - 9
    CGRect frame1 = CGRectMake(50, 150, 50, 50);
    UIButton *button1 = [UIButton buttonWithType:UIButtonTypeSystem];
    button1.frame = frame1;
    button1.layer.borderWidth = 1;
    [button1 setTitle:@"1" forState:UIControlStateNormal];
    [button1 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button1];
    
    CGRect frame2 = CGRectMake(100, 150, 50, 50);
    UIButton *button2 = [UIButton buttonWithType:UIButtonTypeSystem];
    button2.frame = frame2;
    button2.layer.borderWidth = 1;
    [button2 setTitle:@"2" forState:UIControlStateNormal];
    [button2 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button2];
    
    CGRect frame3 = CGRectMake(150, 150, 50, 50);
    UIButton *button3 = [UIButton buttonWithType:UIButtonTypeSystem];
    button3.frame = frame3;
    button3.layer.borderWidth = 1;
    [button3 setTitle:@"3" forState:UIControlStateNormal];
    [button3 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button3];
    
    CGRect frame4 = CGRectMake(50, 200, 50, 50);
    UIButton *button4 = [UIButton buttonWithType:UIButtonTypeSystem];
    button4.frame = frame4;
    button4.layer.borderWidth = 1;
    [button4 setTitle:@"4" forState:UIControlStateNormal];
    [button4 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button4];
    
    CGRect frame5 = CGRectMake(100, 200, 50, 50);
    UIButton *button5 = [UIButton buttonWithType:UIButtonTypeSystem];
    button5.frame = frame5;
    button5.layer.borderWidth = 1;
    [button5 setTitle:@"5" forState:UIControlStateNormal];
    [button5 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button5];
    
    CGRect frame6 = CGRectMake(150, 200, 50, 50);
    UIButton *button6 = [UIButton buttonWithType:UIButtonTypeSystem];
    button6.frame = frame6;
    button6.layer.borderWidth = 1;
    [button6 setTitle:@"6" forState:UIControlStateNormal];
    [button6 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button6];
    
    CGRect frame7 = CGRectMake(50, 250, 50, 50);
    UIButton *button7 = [UIButton buttonWithType:UIButtonTypeSystem];
    button7.frame = frame7;
    button7.layer.borderWidth = 1;
    [button7 setTitle:@"7" forState:UIControlStateNormal];
    [button7 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button7];
    
    CGRect frame8 = CGRectMake(100, 250, 50, 50);
    UIButton *button8 = [UIButton buttonWithType:UIButtonTypeSystem];
    button8.frame = frame8;
    button8.layer.borderWidth = 1;
    [button8 setTitle:@"8" forState:UIControlStateNormal];
    [button8 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button8];
    
    CGRect frame9 = CGRectMake(150, 250, 50, 50);
    UIButton *button9 = [UIButton buttonWithType:UIButtonTypeSystem];
    button9.frame = frame9;
    button9.layer.borderWidth = 1;
    [button9 setTitle:@"9" forState:UIControlStateNormal];
    [button9 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button9];
    
    CGRect frame0 = CGRectMake(50, 300, 100, 50);
    UIButton *button0 = [UIButton buttonWithType:UIButtonTypeSystem];
    button0.frame = frame0;
    button0.layer.borderWidth = 1;
    [button0 setTitle:@"0" forState:UIControlStateNormal];
    [button0 addTarget:self action:@selector(clickOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button0];
    
    // 清空键
    CGRect frameAc = CGRectMake(50, 100, 50, 50);
    UIButton *buttonAc = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonAc.frame = frameAc;
    buttonAc.layer.borderWidth = 1;
    [buttonAc setTitle:@"AC" forState:UIControlStateNormal];
    [buttonAc addTarget:self action:@selector(clickAc:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonAc];
    buttonAc.tag = 1000;
    
    // 正负改变键
    CGRect frameNegative = CGRectMake(100, 100, 50, 50);
    UIButton *buttonNegative = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonNegative.frame = frameNegative;
    buttonNegative.layer.borderWidth = 1;
    [buttonNegative setTitle:@"+/-" forState:UIControlStateNormal];
    [buttonNegative addTarget:self action:@selector(clickNegative:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonNegative];
    
    // 百分号键
    CGRect frameRemainder = CGRectMake(150, 100, 50, 50);
    UIButton *buttonRemainder = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonRemainder.frame = frameRemainder;
    buttonRemainder.layer.borderWidth = 1;
    [buttonRemainder setTitle:@"%" forState:UIControlStateNormal];
    [buttonRemainder addTarget:self action:@selector(clickRemainder:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonRemainder];
    
    // 小数点
    CGRect framePoint = CGRectMake(150, 300, 50, 50);
    UIButton *buttonPoint = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonPoint.frame = framePoint;
    buttonPoint.layer.borderWidth = 1;
    [buttonPoint setTitle:@"." forState:UIControlStateNormal];
    [buttonPoint addTarget:self action:@selector(clickPoint:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonPoint];
    
    // 四则运算键位
    CGRect frameAdd = CGRectMake(200, 100, 50, 50);
    UIButton *buttonAdd = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonAdd.frame = frameAdd;
    buttonAdd.layer.borderWidth = 1;
    [buttonAdd setTitle:@"+" forState:UIControlStateNormal];
    [buttonAdd addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonAdd];
    
    CGRect frameSub = CGRectMake(200, 150, 50, 50);
    UIButton *buttonSub = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonSub.frame = frameSub;
    buttonSub.layer.borderWidth = 1;
    [buttonSub setTitle:@"-" forState:UIControlStateNormal];
    [buttonSub addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonSub];
    
    CGRect frameMul = CGRectMake(200, 200, 50, 50);
    UIButton *buttonMul = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonMul.frame = frameMul;
    buttonMul.layer.borderWidth = 1;
    [buttonMul setTitle:@"X" forState:UIControlStateNormal];
    [buttonMul addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonMul];
    
    CGRect frameDiv = CGRectMake(200, 250, 50, 50);
    UIButton *buttonDiv = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonDiv.frame = frameDiv;
    buttonDiv.layer.borderWidth = 1;
    [buttonDiv setTitle:@"/" forState:UIControlStateNormal];
    [buttonDiv addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonDiv];
    
    // 等于键(全是为他服务的,老大啊)
    CGRect frameEql = CGRectMake(200, 300, 50, 50);
    UIButton *buttonEql = [UIButton buttonWithType:UIButtonTypeSystem];
    buttonEql.frame = frameEql;
    buttonEql.layer.borderWidth = 1;
    [buttonEql setTitle:@"=" forState:UIControlStateNormal];
    [buttonEql addTarget:self action:@selector(clickEql:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:buttonEql];
    self.label.text = @"0";
    
    // 初值
    self.a = 0;
    self.b = 0;
    self.isOn = 0;
    self.p = nil;
}
- (void)clickRemainder:(UIButton *)button{
    self.a = self.label.text.doubleValue;
    if (![self.label.text isEqualToString:@"0"]) {
        self.label.text = [NSString stringWithFormat:@"%.14lg",  self.a / 100];
    }
}
#pragma mark 清空
- (void)clickAc:(UIButton *)button{
    self.a = 0;
    self.b = 0;
    self.p = nil;
    self.isOn = 0;
    self.label.text = @"0";
    [button setTitle:@"Ac" forState:UIControlStateNormal];
}
#pragma mark 运算(取函数,取a值)
- (void)click:(UIButton *)button{
    if (self.p && !self.a) {
        self.a = self.p(self.a, self.label.text.doubleValue);
        self.label.text = [NSString stringWithFormat:@"%.14g", self.a];
    }else{
        self.a = self.label.text.doubleValue;
    }
//    self.label.text = @"0";
    self.isOn = 1;
    if ([button.currentTitle isEqualToString:@"+"]) {
        self.p = ^(double a, double b){
            return a + b;
        };
    }
    if ([button.currentTitle isEqualToString:@"-"]) {
        self.p = ^(double a, double b){
            return a - b;
        };
    }
    if ([button.currentTitle isEqualToString:@"X"]) {
        self.p = ^(double a, double b){
            return a * b;
        };
    }
    if ([button.currentTitle isEqualToString:@"/"]) {
        self.p = ^(double a, double b){
            return a / b;
        };
    }
    self.b = 0;
}
#pragma mark 小数点
- (void)clickPoint:(UIButton *)button{
    UIButton *buttonAc = (UIButton *)[self.view viewWithTag:1000];
    [buttonAc setTitle:@"C" forState:UIControlStateNormal];
    if (![self.label.text rangeOfString:@"."].length) {
        self.a = self.label.text.doubleValue;
        self.label.text = [NSString stringWithFormat:@"%.14lg.",self.a];
    }
}
#pragma mark 正负改变
- (void)clickNegative:(UIButton *)button{
    self.a = self.label.text.doubleValue;
    if (![self.label.text isEqualToString:@"0"]) {
        self.label.text = [NSString stringWithFormat:@"%.14lg", - self.a];
    }
}
#pragma mark 数字输入
- (void)clickOne:(UIButton *)button{
    if (self.isOn) {
        self.label.text = @"0";
        self.isOn = 0;
    }
    UIButton *buttonAc = (UIButton *)[self.view viewWithTag:1000];
    [buttonAc setTitle:@"C" forState:UIControlStateNormal];
    if ([self.label.text rangeOfString:@"e"].length) {
        self.label.text = @"0";
    }
    if ([self.label.text isEqualToString:@"0"]) {
        self.label.text = button.currentTitle;
    } else {
        NSString *text = [NSString stringWithFormat:@"%@%@", self.label.text, button.currentTitle];
        self.label.text = [NSString stringWithFormat:@"%.14lg", text.doubleValue];
    }
}
#pragma mark 结果(取b的值,函数调用)
- (void)clickEql:(UIButton *)button{
    if (!self.b) {
        self.b = self.label.text.doubleValue;
    }
    if (self.p != nil) {
        self.label.text = [NSString stringWithFormat:@"%.14g", self.p(self.a , self.b)];
        self.a  = self.label.text.doubleValue;
    }
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end