宏定义在很多方面都会使用，例如定义高度、判断iOS系统、工具类，还有诸如文件路径、服务端api接口文档。为了对宏能够快速定位和了解其功能，我们最好在定义的时候将其放入特定的头文件中，下面我抛砖引玉，对一些常用的宏进行分类、分文件定义，希望对大家有所帮助。

1. 定义尺寸类的宏

DimensMacros.h
//状态栏高度
#define STATUS_BAR_HEIGHT 20
//NavBar高度
#define NAVIGATION_BAR_HEIGHT 44
//状态栏 ＋ 导航栏 高度
#define STATUS_AND_NAVIGATION_HEIGHT ((STATUS_BAR_HEIGHT) + (NAVIGATION_BAR_HEIGHT))//屏幕 rect
#define SCREEN_RECT ([UIScreen mainScreen].bounds)#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)#define CONTENT_HEIGHT (SCREEN_HEIGHT - NAVIGATION_BAR_HEIGHT - STATUS_BAR_HEIGHT)//屏幕分辨率
#define SCREEN_RESOLUTION (SCREEN_WIDTH * SCREEN_HEIGHT * ([UIScreen mainScreen].scale))//广告栏高度
#define BANNER_HEIGHT 215#define STYLEPAGE_HEIGHT 21#define SMALLTV_HEIGHT 77#define SMALLTV_WIDTH 110#define FOLLOW_HEIGHT 220#define SUBCHANNEL_HEIGHT 62

2.定义沙盒目录文件的宏

PathMacros.h
//文件目录
#define kPathTemp                   NSTemporaryDirectory()
#define kPathDocument               [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]
#define kPathCache                  [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0]
#define kPathSearch                 [kPathDocument stringByAppendingPathComponent:@"Search.plist"]#define kPathMagazine               [kPathDocument stringByAppendingPathComponent:@"Magazine"]
#define kPathDownloadedMgzs         [kPathMagazine stringByAppendingPathComponent:@"DownloadedMgz.plist"]
#define kPathDownloadURLs           [kPathMagazine stringByAppendingPathComponent:@"DownloadURLs.plist"]
#define kPathOperation              [kPathMagazine stringByAppendingPathComponent:@"Operation.plist"]#define kPathSplashScreen           [kPathCache stringByAppendingPathComponent:@"splashScreen"]
#endif

3.工具类的宏

UtilsMacros.h
//Log utils marco#define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);#ifdef DEBUG
#define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#else
#define DLog(...)
#endif#ifdef DEBUG
#define ULog(...)
//#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//System version utils#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)// 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)#define IsPortrait ([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortrait || [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortraitUpsideDown)#define IsNilOrNull(_ref)   (((_ref) == nil) || ([(_ref) isEqual:[NSNull null]]))//角度转弧度
#define DEGREES_TO_RADIANS(d) (d * M_PI / 180)//大于等于7.0的ios版本
#define iOS7_OR_LATER SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"7.0")//大于等于8.0的ios版本
#define iOS8_OR_LATER SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")//iOS6时，导航VC中view的起始高度
#define YH_HEIGHT (iOS7_OR_LATER ? 64:0)//获取系统时间戳
#define getCurentTime [NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]]

4.通知Notification相关的宏

NotificationMacros.h
//系统Notification定义#define TNCancelFavoriteProductNotification     @"TNCancelFavoriteProductNotification"      //取消收藏时
#define TNMarkFavoriteProductNotification       @"TNMarkFavoriteProductNotification"        //标记收藏时#define kNotficationDownloadProgressChanged     @"kNotficationDownloadProgressChanged"      //下载进度变化
#define kNotificationPauseDownload              @"kNotificationPauseDownload"               //暂停下载
#define kNotificationStartDownload              @"kNotificationStartDownload"               //开始下载#define kNotificationDownloadSuccess            @"kNotificationDownloadSuccess"             //下载成功
#define kNotificationDownloadFailed             @"kNotificationDownloadFailed"              //下载失败
#define kNotificationDownloadNewMagazine        @"kNotificationDownloadNewMagazine"

服务端API接口的宏

APIStringMacros.h
//
//接口名称相关#ifdef DEBUG
//Debug状态下的测试API
#define API_BASE_URL_STRING     @"http://boys.test.companydomain.com/api/"#else
//Release状态下的线上API
#define API_BASE_URL_STRING     @"http://www.companydomain.com/api/"#endif//接口
#define GET_CONTENT_DETAIL      @"channel/getContentDetail" //获取内容详情(含上一个和下一个)#define GET_COMMENT_LIST        @"comment/getCommentList"   //获取评论列表#define COMMENT_LOGIN           @"comment/login"            //获取评论列表#define COMMENT_PUBLISH         @"comment/publish"          //发布评论#define COMMENT_DELETE          @"comment/delComment"       //删除评论#define LOGINOUT                @"common/logout"            //登出

还有很多其他类型的宏，此处不一一列举

创建一个import所有宏相关的文件Macros.h

Macros.h
#import "UtilsMacros.h"
#import "APIStringMacros.h"
#import "DimensMacros.h"
#import "NotificationMacros.h"
#import "SharePlatformMacros.h"
#import "StringMacros.h"
#import "UserBehaviorMacros.h"
#import "PathMacros.h"

在xcode项目的pch文件中，导入Macros.h文件

XcodeProjectName-Prefix.pch
#ifdef __OBJC__#import <UIKit/UIKit.h>#import <Foundation/Foundation.h>#import "Macros.h"
#endif