总结了iOS开发过程中的一些常用宏，以后会陆陆续续添加进来。

字符串是否为空

  #define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )

数组是否为空

  #define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)

字典是否为空

  #define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)

是否是空对象

  #define kObjectIsEmpty(_object) (_object == nil \
  || [_object isKindOfClass:[NSNull class]] \
  || ([_object respondsToSelector:@selector(length)] && [(NSData *)_object length] == 0) \
  || ([_object respondsToSelector:@selector(count)] && [(NSArray *)_object count] == 0))

获取屏幕宽度与高度 ( " \ ":连接行标志，连接上下两行 )

  #define kScreenWidth \
  ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.width)

  #define kScreenHeight \
  ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.height)

  #define kScreenSize \
  ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? CGSizeMake([UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale,[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale) : [UIScreen mainScreen].bounds.size)

一些常用的缩写

  #define kApplication        [UIApplication sharedApplication]

  #define kKeyWindow          [UIApplication sharedApplication].keyWindow

  #define kAppDelegate        [UIApplication sharedApplication].delegate

  #define kUserDefaults      [NSUserDefaults standardUserDefaults]

  #define kNotificationCenter [NSNotificationCenter defaultCenter]

APP版本号

  #define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]

系统版本号

  #define kSystemVersion [[UIDevice currentDevice] systemVersion]

获取当前语言

  #define kCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

判断是否为iPhone

  #define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

判断是否为iPad

  #define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

获取沙盒Document路径

  #define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]

获取沙盒temp路径

  #define kTempPath NSTemporaryDirectory()

获取沙盒Cache路径

  #define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

判断是真机还是模拟器

  #if TARGET_OS_IPHONE
  //真机
  #endif
  #if TARGET_IPHONE_SIMULATOR
  //模拟器
  #endif

开发的时候打印，但是发布的时候不打印的NSLog

  #ifdef DEBUG
  #define NSLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
  #else
   #define NSLog(...)
   #endif

颜色

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

  #define kRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]

  #define kRandomColor    KRGBColor(arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0)        //随机色生成

  #define kColorWithHex(rgbValue) \
  [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16)) / 255.0 \
  green:((float)((rgbValue & 0xFF00) >> 8)) / 255.0 \
  blue:((float)(rgbValue & 0xFF)) / 255.0 alpha:1.0]

弱引用/强引用

  #define kWeakSelf(type)  __weak typeof(type) weak##type = type;

  #define kStrongSelf(type) __strong typeof(type) type = weak##type;

由角度转换弧度

  #define kDegreesToRadian(x)      (M_PI * (x) / 180.0)

由弧度转换角度

  #define kRadianToDegrees(radian) (radian * 180.0) / (M_PI)

获取一段时间间隔

  #define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();

  #define kEndTime  NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)

宏（指令）定义

#ifndef MacroDefinition_h      // 如果没定义

#define MacroDefinition_h

获取设备尺寸大小

NavBar高度
```
  #define NavigationBar_HEIGHT 44
```

获取屏幕宽度、高度

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

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

打印日志

DEBUG 模式下打印日志,当前行

  #ifdef DEBUG
  #  define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);

  #else
  #  define DLog(...)
  #endif

重写NSLog,Debug模式下打印日志和当前行数

  #if DEBUG
  #define NSLog(FORMAT, ...) fprintf(stderr,"\nfunction:%s line:%d content:%s\n", __FUNCTION__, __LINE__, ［NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);

  #else
  #define NSLog(FORMAT, ...) nil
  #endif

DEBUG 模式下打印日志,当前行并弹出一个警告

  #ifdef DEBUG
  #  define ULog(fmt, ...)  { UIAlertView *alert = ［UIAlertView alloc] initWithTitle:[NSString stringWithFormat:
  @"%s\n [Line %d] ", __PRETTY_FUNCTION__, __LINE__] message:[NSString stringWithFormat:fmt, ##__VA_ARGS__]  
  delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alert show]; }

  #else
  #  define ULog(...)
  #endif

    #define ITTDEBUG

    #define ITTLOGLEVEL_INFO    10

    #define ITTLOGLEVEL_WARNING  3

    #define ITTLOGLEVEL_ERROR    1

    #ifndef ITTMAXLOGLEVEL

    #ifdef DEBUG

    #define ITTMAXLOGLEVEL ITTLOGLEVEL_INFO

    #else

    #define ITTMAXLOGLEVEL ITTLOGLEVEL_ERROR

    #endif

    #endif

The general purpose logger. This ignores logging levels.

  #ifdef ITTDEBUG
  #define ITTDPRINT(xx, ...)  NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)

  #else
  #define ITTDPRINT(xx, ...)  ((void)0)
  #endif

打印当前方法的名称

  #define ITTDPRINTMETHODNAME() ITTDPRINT(@"%s", __PRETTY_FUNCTION__)

Log-level based logging macros.

  #if ITTLOGLEVEL_ERROR 
  #define ITTDERROR(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)

  #else
  #define ITTDERROR(xx, ...)  ((void)0)

  #endif

  #if ITTLOGLEVEL_WARNING 
  #define ITTDWARNING(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)

  #else
  #define ITTDWARNING(xx, ...)  ((void)0)

  #endif

  #if ITTLOGLEVEL_INFO 
  #define ITTDINFO(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__)

  #else
  #define ITTDINFO(xx, ...)  ((void)0)

  #endif

  #ifdef ITTDEBUG
  #define ITTDCONDITIONLOG(condition, xx, ...) { if ((condition)) { \
   ITTDPRINT(xx, ##__VA_ARGS__); \
  } \
  } ((void)0)

  #else
  #define ITTDCONDITIONLOG(condition, xx, ...) ((void)0)

  #endif

  #define ITTAssert(condition, ...)                                      \
  do {                                                                      \
  if (!(condition)) {                                                    \
  ［NSAssertionHandler currentHandler]                                  \
  handleFailureInFunction:[NSString                 stringWithUTF8String:__PRETTY_FUNCTION__] \
  file:[NSString stringWithUTF8String:__FILE__]  \
  lineNumber:__LINE__                                  \
  description:__VA_ARGS__];                            \
  }                                                                      \
  } while(0)

系统

是否iPad

 #define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

是否iPad

 #define someThing (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)? ipad: iphone

获取系统版本

  #define IOS_VERSION ［[UIDevice currentDevice] systemVersion] floatValue]

  #define CurrentSystemVersion ［UIDevice currentDevice] systemVersion]

获取当前语言

  #define CurrentLanguage (［NSLocale preferredLanguages] objectAtIndex:0])

判断是否 Retina屏、设备是否为iPone 5、是否是iPad

  #define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), ［UIScreen mainScreen] currentMode].size) : NO)

  #define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), ［UIScreen mainScreen] currentMode].size) : NO)

  #define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

判断设备的操做系统是不是ios7

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

判断当前设备是不是iphone5

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

获取当前屏幕的高度

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

获取当前屏幕的宽度

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

定义一个define函数

  #define TT_RELEASE_CF_SAFELY(__REF) { if (nil != (__REF)) { CFRelease(__REF); __REF = nil; } }

判断是真机还是模拟器

  #if TARGET_OS_IPHONE                           //iPhone Device

  #endif

    #if TARGET_IPHONE_SIMULATOR          //iPhone Simulator

    #endif

检查系统版本

  #define SYSTEM_VERSION_EQUAL_TO(v)                  (［[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)

  #define SYSTEM_VERSION_GREATER_THAN(v)              (［[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)

  #define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  (［[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)

  #define SYSTEM_VERSION_LESS_THAN(v)                (［[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)

  #define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)    (［[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

内存

使用ARC和不使用ARC

  #if __has_feature(objc_arc)

  //compiling with ARC

  #else

  // compiling without ARC

  #endif

    #pragma mark - common functions

    #define RELEASE_SAFELY(__POINTER) { [__POINTER release]; __POINTER = nil; }

释放一个对象

  #define SAFE_DELETE(P) if(P) { [P release], P = nil; }

  #define SAFE_RELEASE(x) [x release];x=nil

图片

读取本地图片

  #define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:［NSBundle mainBundle]pathForResource:file ofType:ext］

定义UIImage对象

  #define IMAGE(A) [UIImage imageWithContentsOfFile:［NSBundle mainBundle] pathForResource:A ofType:nil］

定义UIImage对象

  #define ImageNamed(_pointer) [UIImage imageNamed:[UIUtil imageName:_pointer］

//建议使用前两种宏定义,性能高于后者

颜色类

rgb颜色转换（16进制->10进制）

 #define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]

带有RGBA的颜色设置

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

获取RGB颜色

 #define RGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]

 #define RGB(r,g,b) RGBA(r,g,b,1.0f)

背景色

  #define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0]

清除背景色

  #define CLEARCOLOR [UIColor clearColor]

  #pragma mark - color functions

  #define RGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1]

  #define RGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]

其他

方正黑体简体字体定义

  #define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]

定义一个API

  #define APIURL                @"http://xxxxx/"

登录API

  #define APILogin              [APIURL stringByAppendingString:@"Login"]

设置View的tag属性

  #define VIEWWITHTAG(_OBJECT, _TAG)    [_OBJECT viewWithTag : _TAG]

程序的本地化,引用国际化的文件

  #define MyLocal(x, ...) NSLocalizedString(x, nil)

G－C－D

  #define BACK(block) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)

  #define MAIN(block) dispatch_async(dispatch_get_main_queue(),block)

NSUserDefaults 实例化

  #define USER_DEFAULT [NSUserDefaults standardUserDefaults]

由角度获取弧度

  #define degreesToRadian(x) (M_PI * (x) / 180.0)

由弧度获取角度

  #define radianToDegrees(radian) (radian*180.0)/(M_PI)

单例化一个类

  #define SYNTHESIZE_SINGLETON_FOR_CLASS(classname) \
  \
  static classname *shared##classname = nil; \
  \

  + (classname *)shared##classname \
  { \

  @synchronized(self) \
  { \

  if (shared##classname == nil) \
  { \

  shared##classname = ［self alloc] init]; \
  } \

  } \
  \

  return shared##classname; \
  } \
  \

  + (id)allocWithZone:(NSZone *)zone \
  { \

  @synchronized(self) \
  { \

  if (shared##classname == nil) \
  { \

  shared##classname = [super allocWithZone:zone]; \
  return shared##classname; \
  } \
  } \
  \

  return nil; \
  } \
  \
  - (id)copyWithZone:(NSZone *)zone \
  { \

  return self; \
  }

  #endif

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