iOS常用宏定义大全

宏定义与常量的区别

宏：只是在预处理器里进行文本替换，不做任何类型检查，宏能定义代码，const不能，多个宏编译时间相对较长，影响开发效率，调试过慢，const只会编译一次，缩短编译时间。
所以在使用的时候，最好把代码和一些基本数据类型如int抽成宏。
而对于常量字符串使用const，苹果也是这样使用的。

下面总结一下一些常用的宏定义。
1.获取主屏幕和屏幕宽度与高度

OC

#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height #define MAIN_SCREEN [UIScreen mainScreen] 

Swift

let SCREEN_WIDTH = UIScreen.mainScreen().bounds.width let SCREENH_HEIGHT = UIScreen.mainScreen().bounds.height let MAIN_SCREEN = UIScreen.mainScreen() 

如果支持横屏可以用下面的宏:
OC

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 当前Xcode支持iOS8及以上 #define SCREEN_WIDTH ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width) #define SCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height) #define SCREEN_SIZE ([[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) #else #define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height #define SCREEN_SIZE [UIScreen mainScreen].bounds.size #endif 

Swift

 #if (__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 当前Xcode支持iOS8及以上 let SCREEN_WIDTH = (MAIN_SCREEN.respondsToSelector(#selector(UIScreen.nativeBounds)) ? MAIN_SCREEN.nativeBounds.width/MAIN_SCREEN.nativeScale : MAIN_SCREEN.bounds.width) let SCREENH_HEIGHT = (MAIN_SCREEN.respondsToSelector(#selector(UIScreen.nativeBounds)) ? MAIN_SCREEN.nativeBounds.height/MAIN_SCREEN.nativeScale : MAIN_SCREEN.bounds.height) let SCREEN_SIZE = (MAIN_SCREEN.respondsToSelector(#selector(UIScreen.nativeBounds)) ? CGSizeMake(SCREEN_WIDTH, SCREENH_HEIGHT) : MAIN_SCREEN.bounds.size) #else let SCREEN_WIDTH = UIScreen.mainScreen().bounds.width let SCREENH_HEIGHT = UIScreen.mainScreen().bounds.height let SCREEN_SIZE = UIScreen.mainScreen().bounds.size #endif 

2.获取通知中心和UserDefaults

OC

#define DENotificationCenter [NSNotificationCenter defaultCenter] #define SDUserDefaults [NSUserDefaults standardUserDefaults] 

Swift

let DENotificationCenter = NSNotificationCenter.defaultCenter() let SDUserDefaults = NSUserDefaults.standardUserDefaults() 

3.设置随机颜色

OC

#define GRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0 green:arc4random_uniform(256)/255.0 blue:arc4random_uniform(256)/255.0 alpha:1.0] 

Swift

let GRandomColor = UIColor(red: CGFloat(arc4random_uniform(256)/255), green: CGFloat(arc4random_uniform(256)/255), blue: CGFloat(arc4random_uniform(256)/255), alpha: 1) 

4.设置RGB颜色/设置RGBA颜色

OC

#define RGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0] #define RGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a] // clear背景颜色 #define GClearColor [UIColor clearColor] 

Swift

func colorWith(red red : CGFloat,green : CGFloat,blue:CGFloat) -> UIColor { return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: 1) } func colorWith(red red : CGFloat,green : CGFloat,blue:CGFloat,a:CGFloat) -> UIColor { return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: a) } 

5.自定义高效率的 NSLog

项目开发中，我们会在许多地方加上Log，但是发布的时候又不想用这些Log，我们也不可能一个一个的删除，所以自定义Log是必然的！
OC

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

Swift

func debugLog<T>(message: T,
              file: String = #file, method: String = #function, line: Int = #line) { #if DEBUG print("\((file as NSString).lastPathComponent)[\(line)], \(method): \(message)") #endif } 

6.弱引用/强引用

#define LRWeakSelf(type) __weak typeof(type) weak##type = type; #define LRStrongSelf(type) __strong typeof(type) type = weak##type; 

7.由角度转换弧度 由弧度转换角度

#define RadianFrom(degree) (M_PI * (degree) / 180.0) #define DegreeFrom(radian) (radian*180.0)/(M_PI) 

8.获取UIImage

#define GUIImageFor(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]] 

9.获取当前语言

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

10.使用 ARC 和 MRC

#if __has_feature(objc_arc) // ARC #else // MRC #endif 

11.判断当前的iPhone设备/系统版本

OC

//判断是否为iPhone #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) //判断是否为iPad #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) //判断是否为ipod #define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"]) // 判断是否为 iPhone 5SE #define iPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f // 判断是否为iPhone 6/6s #define iPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f // 判断是否为iPhone 6Plus/6sPlus #define iPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f //获取系统版本 #define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue] //判断 iOS 8 或更高的系统版本 #define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO)) 

Swift

//判断是否为iPhone let IS_IPHONE = (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Phone) //判断是否为iPad let IS_IPAD = (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Pad) //判断是否为ipod let IS_IPOD = (UIDevice.currentDevice().model == "iPod touch") // 判断是否为 iPhone 5SE let is_iPhone5SE = (UIScreen.mainScreen().bounds.width == 320.0 && UIScreen.mainScreen().bounds.height == 568.0) // 判断是否为iPhone 6/6s let is_iPhone6Or6s = (UIScreen.mainScreen().bounds.width == 375.0 && UIScreen.mainScreen().bounds.height == 667.0) // 判断是否为iPhone 6Plus/6sPlus let is_iPhone6PlusOr6sPlus = (UIScreen.mainScreen().bounds.width == 414.0 && UIScreen.mainScreen().bounds.height == 736.0) //获取系统版本 let IOS_SYSTEM_VERSION = Float(UIDevice.currentDevice().systemVersion)! //判断 iOS 8 或更高的系统版本 let IS_IOS_VERSION_8_OR_LATER = ((IOS_SYSTEM_VERSION >= 8.0) ? (true):(false)) 

12.判断是真机还是模拟器

#if TARGET_OS_IPHONE //iPhone Device #endif #if TARGET_IPHONE_SIMULATOR //iPhone Simulator #endif 

13.沙盒目录文件

//获取temp #define kPathTemp NSTemporaryDirectory() //获取沙盒 Document #define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] //获取沙盒 Cache #define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject] 

14.GCD
OC

//GCD - 只执行一次 #define kDISPATCH_ONCE(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock); //GCD - 在Main线程上运行 #define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock); //GCD - 开启异步线程 #define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), globalQueueBlocl); 

Swift

func kDISPATCH_ONCE(onceBlock : dispatch_block_t) { var onceToken = dispatch_once_t() dispatch_once(&onceToken, onceBlock) } func kDISPATCH_MAIN_THREAD(mainQueueBlock : dispatch_block_t) { dispatch_async(dispatch_get_main_queue(), mainQueueBlock) } 

键值提示

#define GKeyPath(objc,keyPath) @(((void)objc.keyPath,#keyPath)) 

//弃用的方法后缀

#define TEMPORARILY_ABANDONED __attribute__((deprecated))