ios常用的宏定义

开发使用宏何以很大的减少代码量,用起来更方便,下面是总结的宏

1.获取屏幕宽度与高度#define SCREEN_WIDTH   [UIScreen mainScreen].bounds.size.width#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height根据一个网友(脱离语言)提醒, 如果支持横屏可以用下面的宏:#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

2.获取通知中心#define LRNotificationCenter [NSNotificationCenter defaultCenter]

4.设置RGB颜色/设置RGBA颜色#define LRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]#define LRRGBAColor(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 LRClearColor [UIColor clearColor]

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

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

7.设置 view 圆角和边框#define LRViewBorderRadius(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 LRDegreesToRadian(x) (M_PI * (x) / 180.0)#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)

11.获取view的frame/图片资源//获取view的frame（不建议使用）//#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]]

13.使用 ARC 和 MRC#if __has_feature(objc_arc)// ARC#else// MRC#endif

14.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 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

15.判断是真机还是模拟器#if TARGET_OS_IPHONE  //iPhone Device  #endif  #if TARGET_IPHONE_SIMULATOR  //iPhone Simulator  #endif

16.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]

17.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);