iOS宏定义的使用与规范

http://my.oschina.net/leejan97/blog/354904

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。

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 [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