在这里给大家分享一些常用的宏定义，喜欢的小伙伴可以直接在项目中使用。
目录
1.获取屏幕宽度与高度
2.获取通知中心
3.设置随机颜色
4.设置RGB颜色/设置RGBA颜色
5.自定义高效率的NSLog
6.弱引用/强引用
7.设置view圆角和边框
8.由角度转换弧度/由弧度转换角度
9.获取view的frame/图片资源
10.获取当前语言
11.使用ARC和MRC
12.判断当前的iPhone设备/系统版本
13.沙盒目录文件
14.GCD的宏定义
常用宏定义
1.获取屏幕宽度与高度
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width
#define SCREEN_HEIGHT [UIScreen mainScreen].bounds.size.height
2.获取通知中心
#define SHNotificationCenter [NSNotificationCenter defaultCenter]
3.设置随机颜色
#define SHRandomColor [UIColor colorWithRed:arc4random_uniform(256) / 255.0 green:arc4random_uniform(256) / 255.0 blue:arc4random_uniform(256) / 255.0 alpha:1.0]
4.设置RGB颜色/设置RGBA颜色
#define SHRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#define SHRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:a]
5.自定义高效率的NSLog
#ifdef DEBUG
#define SHLog(...) NSLog(@"%s 第%d行 %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define SHLog(...)
#endif
6.弱引用/强引用
#define SHWeakSelf(type) __weak typeof(type) weak##type = type;
#define SHStrongSelf(type) __strong typeof(type) type = weak##type;
7.设置view圆角和边框
#define SHViewBoarderRadius(View, Radius, Width, Color)\
\
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES];\
[View.layer setBorderWidth:(Width)];\
[View.layer setBorderColor:[Color CGColor]]
8.由角度转换弧度/由弧度转换角度
#define SHDegreesToRadian(x) (M_PI * (x) / 180.0)
#define SHRadianToDegrees(randian) (randian * 180.0) / (M_PI)
9.获取view的frame/图片资源
// 获取view的frame
#define kGetViewWidth(view) view.frame.size.width
#define kGetViewHeight(view) view.frame.size.height
#define kGetViewX(view) view.frame.origin.x
#define kGetViewY(view) view.frame.origin.y
// 获取图片资源
#define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
10.获取当前语言
#define SHCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
11.使用ARC和MRC
#if __has_feature(objc_arc)
// ARC
#else
// MRC
#endif
12.判断当前的iPhone设备/系统版本
// 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 5/SE
#define iPhoneSE [[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))
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的宏定义
// GCD - 一次性执行
#define kDISPATCH_ONCE_BLOCK(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);
