[转自:iOS常用宏定义][http://www.cocoachina.com/ios/20161207/18310.html]
1.字符串是否为空
\#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )
2.数组是否为空
\#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)
3.字典是否为空
\#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)
4.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))
5.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)
6.一些常用的缩写
\#define kApplication [UIApplication sharedApplication]
\#define kKeyWindow [UIApplication sharedApplication].keyWindow
\#define kAppDelegate [UIApplication sharedApplication].delegate
\#define kUserDefaults [NSUserDefaults standardUserDefaults]
\#define kNotificationCenter [NSNotificationCenter defaultCenter]
7.APP版本号
\#define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
8.系统版本号
\#define kSystemVersion [[UIDevice currentDevice] systemVersion]
9.获取当前语言
\#define kCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
10.判断是否为iPhone
\#define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
11.判断是否为iPad
\#define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
12.获取沙盒Document路径
\#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
13.获取沙盒temp路径
\#define kTempPath NSTemporaryDirectory()
14.获取沙盒Cache路径
\#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
15.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
16.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
17.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]
18.弱引用/强引用
\#define kWeakSelf(type) __weak typeof(type) weak##type = type;
\#define kStrongSelf(type) __strong typeof(type) type = weak##type;
19.由角度转换弧度
\#define kDegreesToRadian(x) (M_PI * (x) / 180.0)
20.由弧度转换角度
\#define kRadianToDegrees(radian) (radian * 180.0) / (M_PI)
21.获取一段时间间隔
\#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();
\#define kEndTime NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)
22.宏（指令）定义
\#ifndef MacroDefinition_h // 如果没定义
\#define MacroDefinition_h
23.获取设备尺寸大小
NavBar高度
\#define NavigationBar_HEIGHT 44
24.获取屏幕 宽度、高度
\#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
\#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)
25.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
26.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
27.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
28.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
29.是否iPad
\#define someThing (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)? ipad: iphone
30.获取系统版本
\#define IOS_VERSION ［[UIDevice currentDevice] systemVersion] floatValue] \#define CurrentSystemVersion ［UIDevice currentDevice] systemVersion]
31.获取当前语言
\#define CurrentLanguage (［NSLocale preferredLanguages] objectAtIndex:0])
32.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)
33.判断设备的操做系统是不是ios7
\#define IOS7 (［[UIDevice currentDevice].systemVersion doubleValue] >= 7.0]
34.判断是真机还是模拟器
\#if TARGET_OS_IPHONE //iPhone Device \#endif \#if TARGET_IPHONE_SIMULATOR //iPhone Simulator \#endif
35.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)
36.内存
使用ARC和不使用ARC
\#if __has_feature(objc_arc) //compiling with ARC \#else // compiling without ARC \#endif