有些时候，我们需要将代码简洁化，这样便于读代码。我们可以将一些不变的东东抽取出来，将变化的东西作为参数。定义为宏，这样在写的时候就简单多了。

下面例举了一些常用的宏定义和大家分享：

1. 判断设备的操作系统是不是ios7

1.#define IOS7   (  [[[UIDevice currentDevice].systemVersion doubleValue] >= 7.0] )

 

 

2. 判断当前设备是不是iPhone5

1.#define kScreenIphone5    (([[UIScreen mainScreen] bounds].size.height)>=568)

 

3.获取当前屏幕的高度

1.#define kMainScreenHeight ([UIScreen mainScreen].applicationFrame.size.height)

4.获取当前屏幕的宽度

1.#define kMainScreenWidth  ([UIScreen mainScreen].applicationFrame.size.width)

5.获得RGB颜色

1.#define SMSColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]

6..自定义Log

#ifdef DEBUG

#define SMSLog(...) NSLog(__VA_ARGS__)

#else

#define SMSLog(...)

#endif

7.单例

01.// @interface

02.#define singleton_interface(className)

03.+ (className *)shared##className;

04. 

05. 

06.// @implementation

07.#define singleton_implementation(className)

08.static className *_instance;

09.+ (id)allocWithZone:(struct _NSZone *)zone

10.{

11.static dispatch_once_t onceToken;

12.dispatch_once(&onceToken, ^{

13._instance = [super allocWithZone:zone];

14.});

15.return _instance;

16.}

17.+ (className *)shared##className

18.{

19.static dispatch_once_t onceToken;

20.dispatch_once(&onceToken, ^{

21._instance = [[self alloc] init];

22.});

23.return _instance;

24.}

 

//用于判断是否已经登陆

#define isLongin [kDocumentPath stringByAppendingString:@"/islongIn.plist"]

#define controllerw [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/controllerw"]

#define cancelOrderpath  [kDocumentPath stringByAppendingString:@"/cancelOrderpath"]

//用于临时保存当前的位置信息

#define localAddressInfo [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/localAddressInfo"]

 #define userInfoo [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/userInfo.pliist"]

 //保存历史联系人

#define hisLianxiren [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,  NSUserDomainMask,YES).firstObject stringByAppendingString:@"/hisLiawedwednddewdf"]

//保存订单编号

#define saveorderNO [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,  NSUserDomainMask,YES).firstObject stringByAppendingString:@"/orderNO"]

//保存订单类型

#define saveorderNOtype [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,  NSUserDomainMask,YES).firstObject stringByAppendingString:@"/orderNOtype"]

 

//保存登陆返回信息的地址

#define klongInInfoPath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/localInfo.plist"]

//保存历史搜索记录到本地

#define saveHistorySearchRecord [kDocumentPath stringByAppendingString:@"/HistorySearchRecord.plist"]

//临时保存选定地点到本地

#define saveTemporarySearchRecord [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/TemporarySearchRecordlocalInfo.plist"]

//起点坐标

#define savestarTemporarySearchRecord [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask,YES).firstObject stringByAppendingString:@"/starpoint.plist"]

#define ColorGray [UIColor colorWithRed:245/255.0 green:245/255.0 blue:245/255.0 alpha:1]

#define kNavigationBarText   self.navigationController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName:kRGBColor(255, 212, 10),NSFontAttributeName : [UIFont boldSystemFontOfSize:18]};

#define kTintColor  [UIColor colorWithRed:253/255.0 green:208/255.0 blue:11/255.0 alpha:1.0]

/** 导航栏题目文字大小 */

#define kNaviTitleFontSize   20.0

/** 导航栏题目文字颜色 */

#define kNaviTitleColor     [UIColor colorWithRed:250/255.0 green:190/255.0 blue:1/255.0 alpha:1.0]

 

#define kViewBackGroundColor    [UIColor colorWithRed:245/255.0 green:245/255.0 blue:245/255.0 alpha:1.0]

//通过RGB设置颜色

#define kRGBColor(R,G,B)        [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:1.0]

#define kWindowH   [UIScreen mainScreen].bounds.size.height //应用程序的屏幕高度

#define kWindowW    [UIScreen mainScreen].bounds.size.width  //应用程序的屏幕宽度

 

#define kAppDelegate ((AppDelegate*)([UIApplication sharedApplication].delegate))

 

#define kStoryboard(StoryboardName)     [UIStoryboard storyboardWithName:StoryboardName bundle:nil]

 

//通过Storyboard ID 在对应Storyboard中获取场景对象

#define kVCFromSb(storyboardId, storyboardName)     [[UIStoryboard storyboardWithName:storyboardName bundle:nil] \

instantiateViewControllerWithIdentifier:storyboardId]

 

//移除iOS7之后，cell默认左侧的分割线边距

#define kRemoveCellSeparator \

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath{\

cell.separatorInset = UIEdgeInsetsZero;\

cell.layoutMargins = UIEdgeInsetsZero; \

cell.preservesSuperviewLayoutMargins = NO; \

}

//Docment文件夹目录

#define kDocumentPath NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES).firstObject

 

 

#define SCREEN_FRAME ([UIScreen mainScreen].applicationFrame)

#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)

#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)

 

 

#define ColorWhite [UIColor colorWithRed:255.0 green:255.0 blue:255.0 alpha:1]

#define ColorGray [UIColor colorWithRed:245/255.0 green:245/255.0 blue:245/255.0 alpha:1]

#define ColorOrange [UIColor colorWithRed:254/255.0 green:216/255.0 blue:0.0 alpha:1]

#define ColorBlue [UIColor colorWithRed:58/255.0 green:225/255.0 blue:1.0 alpha:1]

#define ColorBlack [UIColor colorWithRed:17/255.0 green:17/255.0 blue:7/255.0 alpha:1]

#define ColorLine [UIColor colorWithRed:220/255.0 green:220/255.0 blue:220/255.0 alpha:1]

#define ColorText [UIColor colorWithRed:200/255.0 green:200/255.0 blue:200/255.0 alpha:1]

#define ColorTextSelect [UIColor colorWithRed:248/255.0 green:152/255.0 blue:0/255.0 alpha:1]

#define ColorBigText [UIColor colorWithRed:254/255.0 green:216/255.0 blue:3/255.0 alpha:1]

#define ColorBlackText [UIColor colorWithRed:45/255.0 green:45/255.0 blue:45/255.0 alpha:1]

 

#define Font(a) [UIFont fontWithName:@"Helvetica" size:a]

#define sysFont(a) [UIFont systemFontOfSize:a]

#define ISLOGIN @"loginStyle"

 

 #define loca  [NSSearchPathForDirectoriesInDomains(NSCachesDirectory,  NSUserDomainMask,YES).firstObject stringByAppendingString:@"/local.plist"]

 #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

#define IS_RETINA ([[UIScreen mainScreen] scale] >= 2.0)

 

#define SCREEN_WIDTHh ([[UIScreen mainScreen] bounds].size.width)

#define SCREEN_HEIGHTt ([[UIScreen mainScreen] bounds].size.height)

#define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTHh, SCREEN_HEIGHTt))

#define SCREEN_MIN_LENGTH (MIN(SCREEN_WIDTH, SCREEN_HEIGHTt))

#define IS_IPHONE_4_OR_LESS (IS_IPHONE && SCREEN_MAX_LENGTH < 568.0)

#define IS_IPHONE_5 (IS_IPHONE && SCREEN_MAX_LENGTH == 568.0)

#define IS_IPHONE_6 (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)

#define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)

#endif