规范
#ifdef __OBJC__
/** Objectice-C */
#endif
#if TARGET_OS_IPHONE
/** iPhone Device */
#endif
#if TARGET_IPHONE_SIMULATOR
/** iPhone Simulator */
#endif
// ARC
#if __has_feature(objc_arc)
/** Compiling with ARC */
#else
/** Compiling without ARC */
#endif
宏定义
// 测试方法
#ifdef DEBUG
#define LSLog(...) NSLog(__VA_ARGS__)
#else
#define LSLog(...)
#endif
// 测试方法
#ifdef DEBUG
#define DLog( s, ... ) NSLog( @"< %@:(%d) > %@", [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
#else
#define DLog( s, ... )
#endif
//随机色
#define LSRandomColor [UIColor colorWithRed:((float)arc4random_uniform(256) /255.0) green:((float)arc4random_uniform(256) /255.0) blue:((float)arc4random_uniform(256) /255.0) alpha:1.0];
// 颜色(RGB)
#define RGBCOLOR(r, g, b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1]
#define RGBACOLOR(r, g, b, a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]
// RGB颜色转换（16进制->10进制）
#define UIColorFromRGB(rgbValue)\ \ [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \ green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \ blue:((float)(rgbValue & 0xFF))/255.0 \ alpha:1.0]
//首次启动判断：
#define First_Launched @"firstLaunch"
// Screen Scale
#define MainScreenScale [[UIScreen mainScreen] scale]
// App Frame
#define Application_Frame [[UIScreen mainScreen] applicationFrame]
// App Frame Height&Width
#define App_Frame_Height [[UIScreen mainScreen] applicationFrame].size.height
#define App_Frame_Width [[UIScreen mainScreen] applicationFrame].size.width
// MainScreen Height&Width
#define Main_Screen_Height [[UIScreen mainScreen] bounds].size.height
#define Main_Screen_Width [[UIScreen mainScreen] bounds].size.width
// View 坐标(x,y)和宽高(width,height)
#define X(v) (v).frame.origin.x
#define Y(v) (v).frame.origin.y
#define WIDTH(v) (v).frame.size.width
#define HEIGHT(v) (v).frame.size.height
#define MinX(v) CGRectGetMinX((v).frame)
#define MinY(v) CGRectGetMinY((v).frame)
#define MidX(v) CGRectGetMidX((v).frame)
#define MidY(v) CGRectGetMidY((v).frame)
#define MaxX(v) CGRectGetMaxX((v).frame)
#define MaxY(v) CGRectGetMaxY((v).frame)
// 系统控件默认高度
#define kStatusBarHeight (20.f) //电源所在的状态栏
#define kTopBarHeight (44.f) //NavigationBar的高度
#define kBottomBarHeight (49.f) //Tabbar的高度
#define kCellDefaultHeight (44.f) //UITableViewCell 的默认高度
#define kEnglishKeyboardHeight (216.f)//英语键盘的默认高度
#define kChineseKeyboardHeight (252.f)//汉语键盘的默认高度
// PNG JPG 图片路径
#define PNGPATH(NAME) [[NSBundle mainBundle] pathForResource:[NSString stringWithUTF8String:NAME] ofType:@"png"]
#define JPGPATH(NAME) [[NSBundle mainBundle] pathForResource:[NSString stringWithUTF8String:NAME] ofType:@"jpg"]
#define PATH(NAME, EXT) [[NSBundle mainBundle] pathForResource:(NAME) ofType:(EXT)]
// 加载图片
#define PNGIMAGE(NAME) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(NAME) ofType:@"png"]]
#define JPGIMAGE(NAME) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(NAME) ofType:@"jpg"]]
#define IMAGE(NAME, EXT) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(NAME) ofType:(EXT)]]
#define IMAGENAMED(NAME) [UIImage imageNamed:NAME]
// 字体大小(常规/粗体)
#define BOLDSYSTEMFONT(FONTSIZE)[UIFont boldSystemFontOfSize:FONTSIZE]
#define SYSTEMFONT(FONTSIZE) [UIFont systemFontOfSize:FONTSIZE]
#define FONT(NAME, FONTSIZE) [UIFont fontWithName:(NAME) size:(FONTSIZE)]
// 当前版本
#define FSystemVersion ([[[UIDevice currentDevice] systemVersion] floatValue])
#define DSystemVersion ([[[UIDevice currentDevice] systemVersion] doubleValue])
#define SSystemVersion ([[UIDevice currentDevice] systemVersion])
//ios7系统判断：
#define IsIOS7 ([[[UIDevice currentDevice] systemVersion] floatValue] >=7.0 ? YES : NO)
// 当前语言
#define CURRENTLANGUAGE ([[NSLocale preferredLanguages] objectAtIndex:0])
// 是否Retina屏
#define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? \ CGSizeEqualToSize(CGSizeMake(640, 960), \ [[UIScreen mainScreen] currentMode].size) : \ NO)
// 是否iPhone5
#define isiPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? \ CGSizeEqualToSize(CGSizeMake(640, 1136), \ [[UIScreen mainScreen] currentMode].size) : \ NO)
//另一种方式判断版本
#define IS_OS_5_OR_LATER ([[[UIDevice currentDevice] systemVersion] compare:@"5.0" options:NSNumericSearch] != NSOrderedAscending) //iPhone5或者更高版本
#define IS_OS_6_OR_LATER ([[[UIDevice currentDevice] systemVersion] compare:@"6.0" options:NSNumericSearch] != NSOrderedAscending) //iPhone6或者更高版本
#define IS_OS_7_OR_LATER ([[[UIDevice currentDevice] systemVersion] compare:@"7.0" options:NSNumericSearch] != NSOrderedAscending) //iPhone7或者更高版本
// 是否 iPad
#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
// 是否是 iPhone
#define isPhone ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
// 本地化字符串
/** NSLocalizedString宏做的其实就是在当前bundle中查找资源文件名“Localizable.strings”(参数:键＋注释) */
#define LocalString(x, ...) NSLocalizedString(x, nil)
/** NSLocalizedStringFromTable宏做的其实就是在当前bundle中查找资源文件名“xxx.strings”(参数:键＋文件名＋注释) */
#define AppLocalString(x, ...) NSLocalizedStringFromTable(x, @"zjj", nil)
// App Name
#define AppDisplayName [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleDisplayName"]
/** 时间间隔 */
#define kHUDDuration (1.f)
/** 一天的秒数 */
#define SecondsOfDay (24.f * 60.f * 60.f)
/** 秒数 */
#define Seconds(Days) (24.f * 60.f * 60.f * (Days))
/** 一天的毫秒数 */
#define MillisecondsOfDay (24.f * 60.f * 60.f * 1000.f)
/** 毫秒数 */
#define Milliseconds(Days) (24.f * 60.f * 60.f * 1000.f * (Days))
//判断
#define IFISNIL(v) (v = (v != nil) ? v : @"")
#define IFISNILFORNUMBER(v) (v = (v != nil) ? v : [NSNumber numberWithInt:0])
#define IFISSTR(v) (v = ([v isKindOfClass:[NSString class]]) ? v : [NSString stringWithFormat:@"%@",v])
系统中自带的宏
#ifndef __IPHONE_5_0
#warning "This project uses features only available in iOS SDK 5.0 and later."
#endif#ifdef __OBJC__
#import <UIKit/UIKit.h>
#import <Foundation/Foundation.h>
#endif
系统中宏使用零碎
CGFloat min=MIN(A,B);//最终的大小取决于B,但是最大不能超过A，如果超过A那么值就等于A。
CGFloat max=MAX(A,B);
