iOS:制作一个简易的计算器
2024-10-19 01:32:15
初步接触视图,制作了一个简易的计算器,基本上简单的计算是没有问题的，不是很完美,可能还有一些bug,再接再厉。
//
// ViewController.m
// 计算器
//
// Created by ma c on 15/8/25.
// Copyright (c) 2015年 bjsxt. All rights reserved.
// #import "ViewController.h" @interface ViewController ()
@property (weak, nonatomic) IBOutlet UITextField *ResultField;
@property(nonatomic,assign)CGFloat temp;
@property(nonatomic,assign)CGFloat num1;
@property(nonatomic,assign)CGFloat num2;
@property(nonatomic,strong)NSMutableString *string;
@property(nonatomic,strong)NSArray *arr;
@end
@implementation ViewController
- (IBAction)buttonClear:(UIButton *)sender
{
[_string setString:@""]; //重新开始计算,文本框置空
self.ResultField.text = _string;
}
- (IBAction)button7:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button8:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button9:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button4:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button5:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button6:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button1:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button3:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button2:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
}
- (IBAction)button0:(UIButton *)sender
{
[_string appendString:@""];
self.ResultField.text = _string;
} - (IBAction)buttonPoint:(UIButton *)sender
{
[_string appendString:@"."];
self.ResultField.text = _string;
} //触发算数运算事件
- (IBAction)buttonDiv:(UIButton *)sender
{
[_string appendString:@"/"];
self.ResultField.text = _string;
} - (IBAction)buttonMul:(UIButton *)sender
{
[_string appendString:@"*"];
self.ResultField.text = _string;
} - (IBAction)buttonSub:(UIButton *)sender
{
[_string appendString:@"-"];
self.ResultField.text = _string;
} - (IBAction)buttonAdd:(UIButton *)sender
{
[_string appendString:@"+"];
self.ResultField.text = _string;
} //做结果运算操作
- (IBAction)buttonEqual:(UIButton *)sender
{ for(int i=; i<[_string length]; i++)
{ self.arr = [[NSArray alloc]init]; //只输入一个数,不做运算
if([_string length] == )
{
self.temp = [_string doubleValue];
break;
} //做加法运算
if([_string characterAtIndex:i] == '+')
{
self.arr = [_string componentsSeparatedByString:@"+"]; self.num1 = [self.arr[] doubleValue];
self.num2 = [self.arr[] doubleValue];
self.temp = self.num1 + self.num2;
break;
} //做减法运算
if([_string characterAtIndex:(i+)] == '-')
{
self.arr = [_string componentsSeparatedByString:@"-"]; if([self.arr count] == )
{
self.num1 = [self.arr[] doubleValue];
self.num2 = [self.arr[] doubleValue];
self.temp = self.num1 - self.num2;
}
else
{
self.num1 = [self.arr[] doubleValue];
self.num2 = [self.arr[] doubleValue];
self.temp = -(self.num1 + self.num2);
}
break;
} //做除法运算
if([_string characterAtIndex:i] == '/')
{
self.arr = [_string componentsSeparatedByString:@"/"];
self.num1 = [self.arr[] doubleValue];
self.num2 = [self.arr[] doubleValue];
self.temp = self.num1 / self.num2;
break;
} //做乘法运算
if([_string characterAtIndex:i] == '*')
{
self.arr = [_string componentsSeparatedByString:@"*"];
self.num1 = [self.arr[] doubleValue];
self.num2 = [self.arr[] doubleValue];
self.temp = self.num1 * self.num2;
break;
} } //输出结果
[_string setString:[NSString stringWithFormat:@"%.2f",self.temp]];
self.ResultField.text = _string;
} - (void)viewDidLoad {
[super viewDidLoad]; //创建一个可变的字符串
_string = [NSMutableString stringWithCapacity:];
} - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
} @end
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