本文实例为大家分享了iOS实现简单计算器小功能的具体代码，供大家参考，具体内容如下
SimpleCaculatorViewController.h
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//// SimpleCaculatorViewController.h// SimpleCaculator//// Created by LI Junui on 14-2-12.// Copyright (c) 2014年 LEE JUNHUI. All rights reserved.// #import <UIKit/UIKit.h> @interface SimpleCaculatorViewController : UIViewController@property (weak, nonatomic) IBOutlet UILabel *displayScreen;- (IBAction)numberBtnClick:(UIButton *)sender;- (IBAction)clearDS:(UIButton *)sender;- (IBAction)caculate:(UIButton *)sender;- (IBAction)hint:(UIButton *)sender;- (IBAction)act:(UIButton *)sender;- (IBAction)clearBack:(UIButton *)sender; @property(assign, nonatomic) BOOL isUserInputingNumber;@property(assign, nonatomic) int num1;@property(assign, nonatomic) int num2;@property(assign, nonatomic) int tagForAct; @end |
SimpleCaculatorViewController.m
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//// SimpleCaculatorViewController.m// SimpleCaculator//// Created by LI Junui on 14-2-12.// Copyright (c) 2014年 LEE JUNHUI. All rights reserved.// #import "SimpleCaculatorViewController.h" @interface SimpleCaculatorViewController () @end @implementation SimpleCaculatorViewController //记录数字按钮点击事件- (IBAction)numberBtnClick:(UIButton *)sender { if(self.isUserInputingNumber){ int re = [_displayScreen.text intValue] * 10 + [sender.currentTitle intValue]; _displayScreen.text = [NSString stringWithFormat:@"%d",re]; } else{ [_displayScreen setText:sender.currentTitle]; _isUserInputingNumber = YES;//因为第一次进入程序会输入数字，因此为YES }} //清零操作- (IBAction)clearDS:(UIButton *)sender { _displayScreen.text = @"0"; _isUserInputingNumber = NO;//表示没有再输入了} //得到结果- (IBAction)caculate:(UIButton *)sender { int re = 0; _num2 = [_displayScreen.text intValue]; switch (_tagForAct) { case 1: //加法 re = _num1 + _num2; break; case 2: //减法 re = _num1 - _num2; break; case 3: //乘法 re = _num1 * _num2; break; case 4: //除法 re = _num1 / _num2; break; } _displayScreen.text = [NSString stringWithFormat:@"=%d", re]; _num1 = 0; _num2 = 0;} //弹出提示对话框- (IBAction)hint:(UIButton *)sender { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"本计算器由LJH出品" delegate:self cancelButtonTitle:@"返回" otherButtonTitles: nil]; [alert show];} //进行四则运算- (IBAction)act:(UIButton *)sender { //1.得到_displayScreen上的数字 _num1 = [_displayScreen.text intValue]; _displayScreen.text = sender.currentTitle; _isUserInputingNumber =YES; switch (sender.tag) { case 1: //加法 _tagForAct = 1; break; case 2: //减法 _tagForAct = 2; break; case 3: //乘法 _tagForAct = 3; break; case 4: //除法 _tagForAct = 4; break; }} //进行回删操作- (IBAction)clearBack:(UIButton *)sender { int length = [_displayScreen.text length]; int temp = [_displayScreen.text intValue]; temp = temp/length;}@end |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/u011132324/article/details/19128333
