• iOS中宏定义的使用与规范


    声明:以下内容转自http://blog.csdn.net/sky_warmer/article/details/45248643

    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。

    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
     [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" 

    5.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  

    问题:什么时候定义成宏定义?什么时候定义成工具类?

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  • 原文地址:https://www.cnblogs.com/yipingios/p/5397823.html
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