iOS6 迷你计算器小实例
我们来做一下小的实例，迷你计算器，很简单的，虽然这里初次不是很完善，后面会渐渐完善的。
新建Single View Application项目CaculateUI,类前缀CaculateUI。
CaculateUIAppDelegate两个文件均为自动生成未修改。
新建一个Objective-C Class，名为CalculatorBrain，这个就是MVC模式中的Model,所有的数据处理都在这里，CalculatorViewController取到数据后，作简单的转换以符合Model的要求，再传给Model，由Model处理完返回处理结果给Controller,再由Controller更新View.
CalculatorBrain.h
//
// CalculatorBrain.h
// CaculateUI
//
// Created by david on 13-9-10.
// Copyright (c) 2013年 WalkerFree. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface CalculatorBrain : NSObject
//存储执行结果
@property (nonatomic) double result;
//存储操作符
@property (copy, nonatomic) NSString *tempOperateString;
-(void) operate:(double) number:(NSString *) operateString;
-(double) caculate:(double) number;
@endCalculatorBrain.m
//
// CalculatorBrain.m
// CaculateUI
//
// Created by david on 13-9-10.
// Copyright (c) 2013年 WalkerFree. All rights reserved.
//
#import "CalculatorBrain.h"
@implementation CalculatorBrain
@synthesize result;
@synthesize tempOperateString;
-(void) operate:(double)number :(NSString *)operateString
{
self.result = number;
self.tempOperateString = operateString;
}
-(double) caculate:(double)number
{
//根据操作符执行相关操作
if([self.tempOperateString isEqualToString:@"+"])
{
self.result += number;
}
else if([self.tempOperateString isEqualToString:@"-"])
{
self.result -= number;
}
else if([self.tempOperateString isEqualToString:@"*"])
{
self.result *= number;
}
else if([self.tempOperateString isEqualToString:@"/"])
{
if(number == 0)
{
self.result = 0;
}
else
{
self.result /= number;
}
}
return self.result;
}
@end由于我这里没有使用xib这种东西，所以下面就感觉比较复杂，不过您如果有更好的方法，请提示我一下，谢谢
CaculateUIViewController.h
//
// CaculateUIViewController.h
// CaculateUI
//
// Created by david on 13-8-29.
// Copyright (c) 2013年 WalkerFree. All rights reserved.
//
#import <UIKit/UIKit.h>
@class CalculatorBrain;
@class FUIButton;
@interface CaculateUIViewController : UIViewController
@property (strong, nonatomic) FUIButton *One;
@property (strong, nonatomic) FUIButton *Two;
@property (strong, nonatomic) FUIButton *Three;
@property (strong, nonatomic) FUIButton *Four;
@property (strong, nonatomic) FUIButton *Five;
@property (strong, nonatomic) FUIButton *Six;
@property (strong, nonatomic) FUIButton *Seven;
@property (strong, nonatomic) FUIButton *Eight;
@property (strong, nonatomic) FUIButton *Nine;
@property (strong, nonatomic) FUIButton *Ten;
@property (strong, nonatomic) FUIButton *Zero;
//小数点
@property (strong, nonatomic) FUIButton *Decimal;
//等号
@property (strong, nonatomic) FUIButton *Equal;
//加号
@property (strong, nonatomic) FUIButton *Plus;
//减号
@property (strong, nonatomic) FUIButton *Minus;
//乘号
@property (strong, nonatomic) FUIButton *Multiply;
//除号
@property (strong, nonatomic) FUIButton *Division;
@property (strong, nonatomic) UILabel *display;
@property (nonatomic) BOOL isEntering;
@property (strong, nonatomic) CalculatorBrain *brain;
//数字键按下操作
-(void) digitalPressed:(id)sender;
//操作符按下操作
-(void) operatePressed:(id)sender;
//等于号按下操作
-(void) enterPressed:(id)sender;
@endCaculateUIViewController.m
//
// CaculateUIViewController.m
// CaculateUI
//
// Created by david on 13-8-29.
// Copyright (c) 2013年 WalkerFree. All rights reserved.
//
#import "CaculateUIViewController.h"
#import "CalculatorBrain.h"
#import "FUIButton.h"
#import "UIColor+FlatUI.h"
#import "UIFont+FlatUI.h"
#import "UINavigationBar+FlatUI.h"
@interface CaculateUIViewController ()
@end
@implementation CaculateUIViewController
@synthesize One;
@synthesize Two;
@synthesize Three;
@synthesize Four;
@synthesize Five;
@synthesize Six;
@synthesize Seven;
@synthesize Eight;
@synthesize Nine;
@synthesize Ten;
@synthesize Zero;
@synthesize Decimal;
@synthesize Equal;
@synthesize Plus;
@synthesize Minus;
@synthesize Multiply;
@synthesize Division;
@synthesize display;
@synthesize brain;
@synthesize isEntering;
- (void)viewDidLoad
{
// CGFloat btnWidth = 70.0;
CGFloat btnXInterval = 5.0;
CGFloat btnWidth = (self.view.frame.size.width - 2 * 5.0 - 3 * btnXInterval) / 4;
self.title = @"迷你计算器";
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
display = [[UILabel alloc] initWithFrame:CGRectMake(5.0,
5.0,
310.0,
90.0)];
display.backgroundColor = [UIColor blackColor];
display.text = @"";
display.textAlignment = NSTextAlignmentRight;
display.font = [UIFont systemFontOfSize:40.0];
display.textColor = [UIColor whiteColor];
[self.view addSubview:display];
if(!self.brain)
{
self.brain = [[CalculatorBrain alloc] init];
}
//第一个按钮
One = [FUIButton buttonWithType:UIButtonTypeCustom];
[One setFrame:CGRectMake(5.0,
100.0,
btnWidth,
30.0)];
[One setTitle:@"1" forState:UIControlStateNormal];
[One addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self decorationButton:One];
[self.view addSubview:One];
//第二个按钮
Two = [FUIButton buttonWithType:UIButtonTypeCustom];
[Two setFrame:CGRectMake(btnWidth + 5.0 + btnXInterval,
100.0,
btnWidth,
30.0)];
[Two setTitle:@"2" forState:UIControlStateNormal];
[Two addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Two];
//第三个按钮
Three = [FUIButton buttonWithType:UIButtonTypeCustom];
[Three setFrame:CGRectMake(2 * btnWidth + 5.0 + 2 * btnXInterval,
100.0,
btnWidth,
30.0)];
[Three setTitle:@"3" forState:UIControlStateNormal];
[Three addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Three];
//加号按钮
Plus = [FUIButton buttonWithType:UIButtonTypeCustom];
[Plus setFrame:CGRectMake(3 * btnWidth + 5.0 + 3 * btnXInterval,
100.0,
btnWidth,
30.0)];
[Plus setTitle:@"+" forState:UIControlStateNormal];
[Plus addTarget:self
action:@selector(operatePressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Plus];
//第四个按钮
Four = [FUIButton buttonWithType:UIButtonTypeCustom];
[Four setFrame:CGRectMake(5.0,
135.0,
btnWidth,
30.0)];
[Four setTitle:@"4" forState:UIControlStateNormal];
[Four addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Four];
//第五个按钮
Five = [FUIButton buttonWithType:UIButtonTypeCustom];
[Five setFrame:CGRectMake(btnWidth + 5.0 + btnXInterval,
135.0,
btnWidth,
30.0)];
[Five setTitle:@"5" forState:UIControlStateNormal];
[Five addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Five];
//第六个按钮
Six = [FUIButton buttonWithType:UIButtonTypeCustom];
[Six setFrame:CGRectMake(2 * btnWidth + 5.0 + 2 * btnXInterval,
135.0,
btnWidth,
30.0)];
[Six setTitle:@"6" forState:UIControlStateNormal];
[Six addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Six];
//减号按钮
Minus = [FUIButton buttonWithType:UIButtonTypeCustom];
[Minus setFrame:CGRectMake(3 * btnWidth + 5.0 + 3 * btnXInterval,
135.0,
btnWidth,
30.0)];
[Minus setTitle:@"-" forState:UIControlStateNormal];
[Minus addTarget:self
action:@selector(operatePressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Minus];
//第七个按钮
Seven = [FUIButton buttonWithType:UIButtonTypeCustom];
[Seven setFrame:CGRectMake(5.0,
170.0,
btnWidth,
30.0)];
[Seven setTitle:@"7" forState:UIControlStateNormal];
[Seven addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Seven];
//第八个按钮
Eight = [FUIButton buttonWithType:UIButtonTypeCustom];
[Eight setFrame:CGRectMake(btnWidth + 5.0 + btnXInterval,
170.0,
btnWidth,
30.0)];
[Eight setTitle:@"8" forState:UIControlStateNormal];
[Eight addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Eight];
//第九个按钮
Nine = [FUIButton buttonWithType:UIButtonTypeCustom];
[Nine setFrame:CGRectMake(2 * btnWidth + 5.0 + 2 * btnXInterval,
170.0,
btnWidth,
30.0)];
[Nine setTitle:@"9" forState:UIControlStateNormal];
[Nine addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Nine];
//乘号按钮
Multiply = [FUIButton buttonWithType:UIButtonTypeCustom];
[Multiply setFrame:CGRectMake(3 * btnWidth + 5.0 + 3 * btnXInterval,
170.0,
btnWidth,
30.0)];
[Multiply setTitle:@"*" forState:UIControlStateNormal];
[Multiply addTarget:self
action:@selector(operatePressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Multiply];
//小数点按钮
Decimal = [FUIButton buttonWithType:UIButtonTypeCustom];
[Decimal setFrame:CGRectMake(5.0,
205.0,
btnWidth,
30.0)];
[Decimal setTitle:@"." forState:UIControlStateNormal];
[Decimal addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Decimal];
//第十个按钮
Ten = [FUIButton buttonWithType:UIButtonTypeCustom];
[Ten setFrame:CGRectMake(btnWidth + 5.0 + btnXInterval,
205.0,
btnWidth,
30.0)];
[Ten setTitle:@"0" forState:UIControlStateNormal];
[Ten addTarget:self
action:@selector(digitalPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Ten];
//等号按钮
Equal = [FUIButton buttonWithType:UIButtonTypeCustom];
[Equal setFrame:CGRectMake(2 * btnWidth + 5.0 + 2 * btnXInterval,
205.0,
btnWidth,
30.0)];
[Equal setTitle:@"=" forState:UIControlStateNormal];
[Equal addTarget:self
action:@selector(enterPressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Equal];
//除号按钮
Division = [FUIButton buttonWithType:UIButtonTypeCustom];
[Division setFrame:CGRectMake(3 * btnWidth + 5.0 + 3 * btnXInterval,
205.0,
btnWidth,
30.0)];
[Division setTitle:@"/" forState:UIControlStateNormal];
[Division addTarget:self
action:@selector(operatePressed:)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:Division];
[self decorationButton:One];
[self decorationButton:Two];
[self decorationButton:Three];
[self decorationButton:Four];
[self decorationButton:Five];
[self decorationButton:Six];
[self decorationButton:Seven];
[self decorationButton:Eight];
[self decorationButton:Nine];
[self decorationButton:Ten];
[self decorationButton:Zero];
[self decorationButton:Equal];
[self decorationButton:Decimal];
[self decorationButton:Plus];
[self decorationButton:Minus];
[self decorationButton:Multiply];
[self decorationButton:Division];
}
-(void) viewDidAppear:(BOOL)animated
{
[self.navigationController.navigationBar configureFlatNavigationBarWithColor:[UIColor midnightBlueColor]];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) decorationButton:(FUIButton *)btn{
btn.buttonColor = [UIColor turquoiseColor];
btn.shadowColor = [UIColor greenSeaColor];
btn.shadowHeight = 3.0f;
btn.cornerRadius = 6.0f;
btn.titleLabel.font = [UIFont boldFlatFontOfSize:16];
[btn setTitleColor:[UIColor cloudsColor] forState:UIControlStateNormal];
[btn setTitleColor:[UIColor cloudsColor] forState:UIControlStateHighlighted];
}
//-(CalculatorBrain *) brain
//{
// if(!self.brain)
// {
// self.brain = [[CalculatorBrain alloc] init];
// }
// return self.brain;
//}
//数字键按下操作
-(void) digitalPressed:(id)sender
{
if(self.isEntering == YES)
{
//如果之前输入的数字少于12位
if([self.display.text length] < 12)
{
//把按到的数字转换成字符串加到原来显示的字符串的末尾，并更新显示
self.display.text = [self.display.text stringByAppendingString:[sender currentTitle]];
}
else//如果就输入的数字大于等于12位，不操作，直接返回
{
return;
}
}
else//如果之前不是输入状态，即现在输入的是数字的第一位（最高位）
{
//显示输入的数字
self.display.text = [sender currentTitle];
//把输入的状态改为YES
self.isEntering = YES;
}
}
//操作符按下操作
-(void) operatePressed:(id)sender
{
//输入状态改为NO
self.isEntering = NO;
//取到显示的数字。转换为double
double num = [self.display.text doubleValue];
//把数字和操作符发送给CalculatorBrain的operate接收器
[self.brain operate:num :[sender currentTitle]];
}
//等于号按下操作
-(void) enterPressed:(id)sender
{
//把输入状态改为NO
self.isEntering = NO;
//取到显示的数字，转换为double
double num = [self.display.text doubleValue];
//把数字发送给CalculateBrain的calcute接收器，并接受返回的结果
double result = [self.brain caculate:num];
//把结果显示在屏幕上
self.display.text = [NSString stringWithFormat:@"%g",result];
}
-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
return (toInterfaceOrientation != UIDeviceOrientationPortraitUpsideDown);
}
//-(BOOL) shouldAutorotate
//{
// return YES;
//}
//
//-(NSUInteger) supportedInterfaceOrientations
//{
// return UIInterfaceOrientationMaskLandscape;
//}
@end里面使用到了FlatUI，可以自行google搜索然后下载。
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由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于
博客（
https://www.gowhich.com ），版权所有，侵权必究。
本文永久链接： https://www.gowhich.com/blog/373
版权声明
由 davidzhang创作并维护的 Gowhich博客采用创作共用保留署名-非商业-禁止演绎4.0国际许可证。
本文首发于 Gowhich博客（ https://www.gowhich.com ），版权所有，侵权必究。
本文永久链接： https://www.gowhich.com/blog/373