源代碼(.m文件)

 

#import "ZKJAppDelegate.h"





@interface
ZKJAppDelegate ()

@property (retain,nonatomic)
UIView *containView;

@property (retain,
nonatomic) UIButton *button;

@property (retain,
nonatomic) UILabel *label;

@property (retain,
nonatomic) NSMutableString *string;
//保存字符

@property (assign,nonatomic)
double num1,num2,num3,num4;

//num1保存輸入數值,2,保存運算前數值,3是運算結果,4判斷進行何種運算

@end











@implementation ZKJAppDelegate



- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

self.window = [[UIWindow
alloc] initWithFrame:[[UIScreen
mainScreen] bounds]];

// Override point for customization after application launch.

self.containView = [[UIView
alloc] initWithFrame:CGRectMake(0,
0, 320,
568)];

self.containView.backgroundColor = [UIColor
clearColor];

[self.window
addSubview:self.containView];

[self.containView
release];

self.label = [[UILabel
alloc] initWithFrame:CGRectMake(30,
40,
190, 50)];

self.label.backgroundColor = [UIColor
lightGrayColor];

self.label.textAlignment
= UITextAlignmentLeft;

self.label.font
= [UIFont
systemFontOfSize:32];

[self.containView
addSubview:self.label];

[self.label
release ];

UIButton *backButton = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

backButton.backgroundColor = [UIColor
lightGrayColor];

[backButton setFrame:CGRectMake(225,
40, 60,
50)];

[backButton setTitle:@"back"
forState:UIControlStateNormal];

[backButton addTarget:self
action:@selector(backClick:)
forControlEvents:UIControlEventTouchUpInside];

[self.containView
addSubview:backButton];

//添加1 - 9 的按鈕

NSArray *array = [NSArray
arrayWithObjects:@"1",

@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",
nil];

int n = 0;

for (int i =
0 ; i < 3; i++ ) {

for (int j =
0 ; j < 3; j++ ) {

self.button = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

self.button.frame =
CGRectMake(30 +
65 * j , 150 +
65 * i, 60 ,
60);

self.button.backgroundColor = [UIColor
lightGrayColor];

[self.button
setTitle:array[n++] forState:UIControlStateNormal];

[self.containView
addSubview:self.button];

[self.button
addTarget:self
action:@selector(one:)
forControlEvents:UIControlEventTouchUpInside];

}

}

//添加零

UIButton *button0 = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

[button0 setFrame:CGRectMake(30,
345, 60,
60)];

button0.backgroundColor = [UIColor
lightGrayColor];

[button0 setTitle:@"0"
forState:UIControlStateNormal];

[button0 addTarget:self
action:@selector(one:)
forControlEvents:UIControlEventTouchUpInside] ;

[self.containView
addSubview:button0];

//添加點

UIButton *point = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

[point setFrame:CGRectMake(95,
345, 60,
60)];

point.backgroundColor = [UIColor
lightGrayColor];

[point setTitle:@"."
forState:UIControlStateNormal];

[point addTarget:self
action:@selector(one:)
forControlEvents:UIControlEventTouchUpInside] ;

[self.containView
addSubview:point];

// [point release];

//添加刪除

UIButton *deleteButton = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

[deleteButton setFrame:CGRectMake(160,
345, 60,
60)];

deleteButton.backgroundColor = [UIColor
lightGrayColor];

[deleteButton setTitle:@"delete"
forState:UIControlStateNormal];

[deleteButton addTarget:self
action:@selector(deleteClick:)
forControlEvents:UIControlEventTouchUpInside];

[self.containView
addSubview:deleteButton];

// [backButton release];

//添加運算符

NSArray *array1 = [NSArray
arrayWithObjects:@"+",@"-",@"*",@"/",
nil];

for (int i =
0 ; i < 4; i++ ) {

UIButton *button = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

;

button.backgroundColor = [UIColor
lightGrayColor];


forState:UIControlStateNormal];

[self.containView
addSubview:button];

;

// ;

}

//添加等號

UIButton *istoButton = [UIButton
buttonWithType:UIButtonTypeRoundedRect];

[istoButton setFrame:CGRectMake(30,
100, 255,
40)];

istoButton.backgroundColor = [UIColor
lightGrayColor];

[istoButton setTitle:@"="
forState:UIControlStateNormal];

[istoButton addTarget:self
action:@selector(isto: )
forControlEvents:UIControlEventTouchUpInside];

[self.containView
addSubview:istoButton];

self.string = [[NSMutableString
alloc] init];

self.window.backgroundColor = [UIColor
whiteColor];

[self.window
makeKeyAndVisible];

return
YES;

}



//鍵盤輸入 數字事件

- (void)one:(id)sender {

if ([self.string
hasPrefix:@"+"] || [self.string
hasPrefix:@"-"] || [self.string
hasPrefix:@"*"] || [self.string
hasPrefix:@"/"]) {

[self.string
setString:@""];

}

//*********

[self.string
appendString:[sender currentTitle]];//數字連續輸入;;;

self.label.text
= [NSString
stringWithString:self.string];

self.num1 = [self.label.text
doubleValue];//將字符串轉化為基本數據類型並賦給num1;

NSLog(@"%f",self.num1);

}

//運算符事件

- (void)two:(id)sender{

[self.string
setString:@""];

//*********

[self.string
appendString:[sender currentTitle]];

self.label.text =
self.string;

if ([self.string
hasPrefix:@"+"]) {

self.num2 =
self.num1;

self.num4 =
1;

} else if ([self.string
hasPrefix:@"-"]){

self.num2 =
self.num1;

self.num4 =
2;

} else if ([self.string
hasPrefix:@"*"]) {

self.num2 =
self.num1;

self.num4 =
3;

} else if ([self.string
hasPrefix:@"/"]) {

self.num2 =
self.num1;

self.num4 =
4;

}

}

//等號事件

- (void)isto:(id)sender{

if (self.num4 ==
1) {

self.num3 =
self.num2 + [self.label.text
doubleValue];

self.label.text = [NSString
stringWithFormat:@"%f",self.num3];

// self.num3 = 0;

[self.string
setString:@""];

} else if (self.num4 ==
2){

self.num3 =
self.num2 - [self.label.text
doubleValue];

self.label.text = [NSString
stringWithFormat:@"%f",self.num3];

// self.num3 = 0;

} else if (self.num4 ==
3){

self.num3 =
self.num2 * [self.label.text
doubleValue];

self.label.text = [NSString
stringWithFormat:@"%f",self.num3];

// self.num3 = 0;

} else if (self.num4 ==
4) {

self.num3 =
self.num2 / [self.label.text
doubleValue];

self.label.text = [NSString
stringWithFormat:@"%f",self.num3];

// self.num3 = 0;

}

}



//全部刪除的響應事件

- (void)deleteClick:(id)sender{

[self.string
setString:@"" ];

// [self.string appendString:[sender currentTitle]];

self.label.text =
self.string;

}





//消除一個數的響應事件

- (void)backClick:(id)sender{

// NSMutableString

if ([self.string
length] > 0) {

NSInteger n = [self.string
length];

[self.string
deleteCharactersInRange:NSMakeRange(n -
1, 1)];

self.label.text =
self.string;

}



}













- (void)applicationWillResignActive:(UIApplication *)application

{

// Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application
and it begins the transition to the background state.

// Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.

}



- (void)applicationDidEnterBackground:(UIApplication *)application

{

// Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.

// If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.

}



- (void)applicationWillEnterForeground:(UIApplication *)application

{

// Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.

}



- (void)applicationDidBecomeActive:(UIApplication *)application

{

// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.

}



- (void)applicationWillTerminate:(UIApplication *)application

{

// Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.

}

- (void)dealloc{

[self.window
release];

[super dealloc];

}

@end

該文章由WP-AutoPost插件自動采集發布

原文地址:http://www.2cto.com/kf/201408/327795.html