标签：
#import "MainViewController.h"
#define kScreenWidth CGRectGetWidth([[UIScreen mainScreen] bounds])
#define kScreenHeight CGRectGetHeight([[UIScreen mainScreen] bounds])
#define kButtonWidth ((kScreenWidth - 5) / 4)
#define kButtonHeight kButtonWidth
#define kButtonOffsetX 1
#define kButtonOffsetY 1
#define kButtonOriginY (kScreenHeight - (kButtonHeight + kButtonOffsetY) * 5)
@interface MainViewController ()
@property (nonatomic,retain)UILabel *displayLabel;
@property (nonatomic, assign) BOOL isFuhao;
@property (nonatomic, retain) NSMutableArray *shu;
@property (nonatomic, retain) NSMutableArray *yunsuanfu;
@end
@implementation MainViewController
-(void)dealloc{
[_displayLabel release];
[_yunsuanfu release];
[_shu release];
[super dealloc];
}
-(NSMutableArray *)shu{
if (!_shu) {
self.shu = [NSMutableArray array];
}
return _shu;
}
-(NSMutableArray *)yunsuanfu{
if (!_yunsuanfu) {
self.yunsuanfu = [NSMutableArray array];
}
return _yunsuanfu;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor blackColor];
self.displayLabel =[[[UILabel alloc]initWithFrame:CGRectMake(10, kButtonOriginY-120, kScreenWidth-20, 120)]autorelease];
self.displayLabel.font=[UIFont systemFontOfSize:100];//设置字体大小
self.displayLabel.textColor=[UIColor whiteColor]; //设置文本颜色
self.displayLabel.textAlignment=NSTextAlignmentRight //设置向右对齐
self.displayLabel.text=@"0"; //设置文本为0；
self.displayLabel.minimumScaleFactor=0.4 ; //最小缩放比例
self.displayLabel.adjustsFontSizeToFitWidth=YES;
[self.view addSubview:self.displayLabel];
/*
AC +- % /
7 8 9 *
4 5 6 -
1 2 3 +
0 . =
*/
NSArray *titles = @[@[@"AC", @"+-", @"baifenhao", @"chuhao"], @[@"7", @"8", @"9", @"chenghao"], @[@"4", @"5", @"6", @"jianhao"], @[@"1", @"2", @"3", @"jiahao"], @[@"0",@"", @"dian", @"dengyu"]];
for (int i = 0; i < titles.count; i++) {
NSArray *subTitles = titles[i];
for (int j = 0; j < subTitles.count; j++) {
NSString *title = subTitles[j];
if ([title isEqualToString:@""]) {
continue;
}
UIButton *aButton = [UIButton buttonWithType:UIButtonTypeCustom];
CGRect frame = CGRectMake(kButtonOffsetX + (kButtonWidth + kButtonOffsetX) * j, kButtonOriginY + (kButtonHeight + kButtonOffsetY) * i, kButtonWidth, kButtonHeight);
if ([title isEqualToString:@"0"]) {
frame.size.width = frame.size.width * 2 + kButtonOffsetX;
}
aButton.frame = frame;
NSString *normalImageName = [subTitles[j] stringByAppendingString:@"_btn_nor"];
NSString *highlightedImageName = [subTitles[j] stringByAppendingString:@"_btn_highlighted"];
[aButton setImage:[UIImage imageNamed:normalImageName] forState:UIControlStateNormal];
[aButton setImage:[UIImage imageNamed:highlightedImageName] forState:UIControlStateHighlighted];
[aButton setTitle:title forState:UIControlStateNormal];
[aButton addTarget:self action:@selector(handleButtonAction:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:aButton];
}
}
}
/*
主要功能：实现计算
输入：通过点击button输入
输出：label
*/
-(void)handleButtonAction:(UIButton *)sender{
NSString *title = [sender titleForState:UIControlStateNormal];
NSArray *numbers = @[@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9"];
NSArray *opeartion = @[@"jiahao",@"jianhao",@"chenghao",@"chuhao",@"dengyu"];
if ([numbers containsObject:title]) {
if ([self.displayLabel.text isEqual:@"0"] || self.isFuhao == YES) {
self.displayLabel.text = title;
}
else {
self.displayLabel.text = [self.displayLabel.text stringByAppendingString:title];
}
self.isFuhao = NO;
}
if ([title isEqual:@"dian"]) {
//一个数字中有且只有一个
if (![self.displayLabel.text containsString:@"."]) {
self.displayLabel.text = [self.displayLabel.text stringByAppendingString:@"."];
}
}
if ([opeartion containsObject:title]) {
[self.yunsuanfu addObject:title];
[self.shu addObject:self.displayLabel.text];
self.isFuhao = YES;
//按下等于号开始计算所有的算式
if ([title isEqual:@"dengyu"]) {
//乘除
for (int i = 0; i < self.yunsuanfu.count; i++) {
if ([self.yunsuanfu[i] isEqual:@"chenghao"] || [self.yunsuanfu[i] isEqual:@"chuhao"]) {
CGFloat num1 = [self.shu[i] floatValue];
CGFloat num2 = [self.shu[i + 1] floatValue];
CGFloat result;
[self.shu removeObjectAtIndex:i];
[self.shu removeObjectAtIndex:i];
if ([self.yunsuanfu[i] isEqual:@"chenghao"]) {
result = num1 * num2;
}
else{
if (num2 == 0) {
self.displayLabel.text = @"?";
return;
}
result = num1 / num2;
}
[self.shu insertObject:[NSString stringWithFormat:@"%g",result] atIndex:i];
[self.yunsuanfu removeObjectAtIndex:i];
i--;
}
//加减
for (int i = 0; i < self.yunsuanfu.count; i++) {
if ([self.yunsuanfu[i] isEqual:@"jiahao"] || [self.yunsuanfu[i] isEqual:@"jianhao"]) {
CGFloat num1 = [self.shu[i] floatValue];
CGFloat num2 = [self.shu[i + 1] floatValue];
CGFloat result;
[self.shu removeObjectAtIndex:i];
[self.shu removeObjectAtIndex:i];
if ([self.yunsuanfu[i] isEqual:@"jiahao"]) {
result = num1 + num2;
}
else{
result = num1 - num2;
}
[self.shu insertObject:[NSString stringWithFormat:@"%g",result] atIndex:i];
[self.yunsuanfu removeObjectAtIndex:i];
i--;
}
}
self.displayLabel.text = self.shu.lastObject;
[self.shu removeAllObjects];
[self.yunsuanfu removeAllObjects];
}
}
if ([title isEqual:@"AC"]) {
[self.shu removeAllObjects];
[self.yunsuanfu removeAllObjects];
self.displayLabel.text = @"0";
self.isFuhao = NO;
}
if ([title isEqual:@"+-"]) {
if ([self.displayLabel.text hasPrefix:@"-"]) {
self.displayLabel.text = [self.displayLabel.text substringFromIndex:1];
}
else {
NSString *a = @"-";
self.displayLabel.text = [a stringByAppendingString:self.displayLabel.text];
}
}
if ([title isEqual:@"baifenhao"]) {
CGFloat num = [self.displayLabel.text floatValue];
num = num / 100;
self.displayLabel.text = [NSString stringWithFormat:@"%g",num];
}
}
标签：
原文地址：http://www.cnblogs.com/jyd1992/p/4907878.html
