Simple Calculator Design Code

#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", @ "Jian Hao "], @[@" 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 + KButtonO ffsety) * 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;

[email protected] "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:{

[email protected] "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) {

[Email protected] "";

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];

[Email protected] "";

_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];

[Email protected] "";

_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];

[Email protected] "";

_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];

[Email protected] "";

_isresult=yes;

}

Break

}

Default

Break

}

}

Simple Calculator Design Code