用iOS 做一個簡易計算機 (功能完備)

用iOS 做一個簡易計算機 (功能完備)

原始碼(.m檔案)

#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;//儲存字元

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

//num1儲存輸入數值,2,儲存運算前數值,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 = [[UIWindowalloc] initWithFrame:[[UIScreenmainScreen] bounds]];

// Override point for customization after application launch.

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

self.containView.backgroundColor = [UIColorclearColor];

[self.windowaddSubview:self.containView];

[self.containViewrelease];

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

self.label.backgroundColor = [UIColorlightGrayColor];

self.label.textAlignment = UITextAlignmentLeft;

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

[self.containViewaddSubview:self.label];

[self.labelrelease ];

UIButton *backButton = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

backButton.backgroundColor = [UIColorlightGrayColor];

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

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

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

[self.containViewaddSubview:backButton];

//添加1 - 9 的按鈕

NSArray *array = [NSArrayarrayWithObjects:@"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 = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

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

self.button.backgroundColor = [UIColorlightGrayColor];

[self.buttonsetTitle:array[n++] forState:UIControlStateNormal];

[self.containViewaddSubview:self.button];

[self.buttonaddTarget:selfaction:@selector(one:)forControlEvents:UIControlEventTouchUpInside];

}

}

//添加零

UIButton *button0 = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

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

button0.backgroundColor = [UIColorlightGrayColor];

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

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

[self.containViewaddSubview:button0];

//添加點

UIButton *point = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

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

point.backgroundColor = [UIColorlightGrayColor];

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

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

[self.containViewaddSubview:point];

// [point release];

//添加刪除

UIButton *deleteButton = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

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

deleteButton.backgroundColor = [UIColorlightGrayColor];

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

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

[self.containViewaddSubview:deleteButton];

// [backButton release];

//添加運算子

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

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

UIButton *button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

[button setFrame:CGRectMake(225,150 + 65 * i,60 , 60)];

button.backgroundColor = [UIColorlightGrayColor];

[button setTitle:array1[i]forState:UIControlStateNormal];

[self.containViewaddSubview:button];

[button addTarget:selfaction:@selector(two:)forControlEvents:UIControlEventTouchUpInside];

// [button release];

}

//添加等號

UIButton *istoButton = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];

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

istoButton.backgroundColor = [UIColorlightGrayColor];

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

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

[self.containViewaddSubview:istoButton];

self.string = [[NSMutableStringalloc] init];

self.window.backgroundColor = [UIColorwhiteColor];

[self.windowmakeKeyAndVisible];

return YES;

}

//鍵盤輸入 數字事件

- (void)one:(id)sender {

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

[self.stringsetString:@""];

}

//*********

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

self.label.text = [NSStringstringWithString:self.string];

self.num1 = [self.label.textdoubleValue];//將字串轉化為基礎資料型別 (Elementary Data Type)並賦給num1;

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

}

//運算子事件

- (void)two:(id)sender{

[self.stringsetString:@""];

//*********

[self.stringappendString:[sender currentTitle]];

self.label.text =self.string;

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

self.num2 =self.num1;

self.num4 =1;

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

self.num2 =self.num1;

self.num4 =2;

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

self.num2 =self.num1;

self.num4 =3;

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

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.textdoubleValue];

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

// self.num3 = 0;

[self.stringsetString:@""];

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

self.num3 =self.num2 - [self.label.textdoubleValue];

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

// self.num3 = 0;

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

self.num3 =self.num2 * [self.label.textdoubleValue];

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

// self.num3 = 0;

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

self.num3 =self.num2 / [self.label.textdoubleValue];

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

// self.num3 = 0;

}

}

//全部刪除的響應事件

- (void)deleteClick:(id)sender{

[self.stringsetString:@"" ];

// [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.stringlength] > 0) {

NSInteger n = [self.stringlength];

[self.stringdeleteCharactersInRange: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.windowrelease];

[super dealloc];

}

@end