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#import "AppDelegate.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 AppDelegate ()
{
BOOL _isHave;
BOOL _isResult;
}
@property (retain,nonatomic)NSString *string;
@end
@implementation AppDelegate
-(void)dealloc{
[_window release];
[super dealloc];
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]autorelease];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor blackColor];
[self.window makeKeyAndVisible];
/*
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];
aButton.tag=100+(10*i)+j;
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.window addSubview:aButton];
}
}
UITextField *aLabel=[[[UITextField alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, kScreenHeight-5*(kButtonHeight+kButtonOffsetY))]autorelease];
aLabel.tag=1000;
aLabel.backgroundColor=[UIColor blackColor];
aLabel.clearsOnBeginEditing=YES;
aLabel.enabled=NO;
aLabel.placeholder=@"0";
aLabel.textColor=[UIColor whiteColor];
aLabel.font=[UIFont fontWithName:@"Times New Roman" size:70];
aLabel.textAlignment=NSTextAlignmentRight;
[_window addSubview:aLabel];
return YES;
}
-(void)handleButtonAction:(UIButton *)abutton{
UITextField *label=(UITextField *)[_window viewWithTag:1000];
switch (abutton.tag) {
case 100:{
label.text=@"0";
label.clearsOnBeginEditing=YES;
break;
}case 101:{
float num=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:-num];
label.text=[NSString stringWithFormat:@"%@",number];
break;
}case 102:{
float num=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:(num/100)];
label.text=[NSString stringWithFormat:@"%@",number];
break;
}case 110:
case 111:
case 112:
case 120:
case 121:
case 122:
case 130:
case 131:
case 132:
case 140:
case 142:{
if (_isHave||[label.text isEqualToString:@""]||_isResult) {
label.text=@"";
label.text=[label.text stringByAppendingString:abutton.currentTitle];
}else{label.text=[label.text stringByAppendingString:abutton.currentTitle];
}
_isHave=NO;
_isResult=NO;
break;
}case 103:
case 113:
case 123:
case 133:{
self.string=[label.text stringByAppendingString:abutton.currentTitle];
_isHave=YES;
break;
}case 143:{
if ([self.string hasSuffix:@"jiahao"]) {
float value1=[self.string floatValue];
float value2=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:(value1+value2)];
label.text=[NSString stringWithFormat:@"%@",number];
self.string=@"";
_isResult=YES;
}else if([self.string hasSuffix:@"jianhao"]) {
float value1=[self.string floatValue];
float value2=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:(value1-value2)];
label.text=[NSString stringWithFormat:@"%@",number];
self.string=@"";
_isResult=YES;
}else if([_string hasSuffix:@"chenghao"]) {
float value1=[self.string floatValue];
float value2=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:(value1*value2)];
label.text=[NSString stringWithFormat:@"%@",number];
self.string=@"";
_isResult=YES;
}else if([self.string hasSuffix:@"chuhao"]) {
float value1=[self.string floatValue];
float value2=[label.text floatValue];
NSNumber *number=[NSNumber numberWithFloat:(value1/value2)];
label.text=[NSString stringWithFormat:@"%@",number];
self.string=@"";
_isResult=YES;
}
break;
}
default:
break;
}
}
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原文地址：http://www.cnblogs.com/sxsy-2015/p/4887226.html
