iOS开发中那些高效常用的宏

iOS开发过程中使用一些常用的宏可以提高开发效率，提高代码的重用性；将这些宏放到一个头文件里然后再放到工程中的-Prefix.pch文件中(或者直接放到-Prefix.pch中)直接可以使用,灰常方便。

本文整理自http://www.cocoachina.com/applenews/devnews/2013/0328/5907.html 。

做了一些分类和注释,可以根据自己习惯再添加或者删除或者修改这些宏进行使用。

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// //  MacroDefinition.h //  MacroDefinitionDemo // //  Created by 新风作浪 on 13-6-9. //  Copyright (c) 2013年 SpinningSphere Labs. All rights reserved. //   #ifndef MacroDefinition_h #define MacroDefinition_h   //-------------------获取设备大小------------------------- //NavBar高度 #define NavigationBar_HEIGHT 44 //获取屏幕 宽度、高度 #define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width) #define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)   //-------------------获取设备大小-------------------------     //-------------------打印日志------------------------- //DEBUG  模式下打印日志,当前行 #ifdef DEBUG #   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__); #else #   define DLog(...) #endif     //重写NSLog,Debug模式下打印日志和当前行数 #if DEBUG #define NSLog(FORMAT, ...) fprintf(stderr,"\nfunction:%s line:%d content:%s\n", __FUNCTION__, __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]); #else #define NSLog(FORMAT, ...) nil #endif   //DEBUG  模式下打印日志,当前行 并弹出一个警告 #ifdef DEBUG #   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     #define ITTDEBUG #define ITTLOGLEVEL_INFO     10 #define ITTLOGLEVEL_WARNING  3 #define ITTLOGLEVEL_ERROR    1   #ifndef ITTMAXLOGLEVEL   #ifdef DEBUG #define ITTMAXLOGLEVEL ITTLOGLEVEL_INFO #else #define ITTMAXLOGLEVEL ITTLOGLEVEL_ERROR #endif   #endif   // The general purpose logger. This ignores logging levels. #ifdef ITTDEBUG #define ITTDPRINT(xx, ...)  NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__) #else #define ITTDPRINT(xx, ...)  ((void)0) #endif   // Prints the current method's name. #define ITTDPRINTMETHODNAME() ITTDPRINT(@"%s", __PRETTY_FUNCTION__)   // Log-level based logging macros. #if ITTLOGLEVEL_ERROR <= ITTMAXLOGLEVEL #define ITTDERROR(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__) #else #define ITTDERROR(xx, ...)  ((void)0) #endif   #if ITTLOGLEVEL_WARNING <= ITTMAXLOGLEVEL #define ITTDWARNING(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__) #else #define ITTDWARNING(xx, ...)  ((void)0) #endif   #if ITTLOGLEVEL_INFO <= ITTMAXLOGLEVEL #define ITTDINFO(xx, ...)  ITTDPRINT(xx, ##__VA_ARGS__) #else #define ITTDINFO(xx, ...)  ((void)0) #endif   #ifdef ITTDEBUG #define ITTDCONDITIONLOG(condition, xx, ...) { if ((condition)) { \ ITTDPRINT(xx, ##__VA_ARGS__); \ } \ } ((void)0) #else #define ITTDCONDITIONLOG(condition, xx, ...) ((void)0) #endif   #define ITTAssert(condition, ...)                                       \ do {                                                                      \ if (!(condition)) {                                                     \ [[NSAssertionHandler currentHandler]                                  \ handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] \ file:[NSString stringWithUTF8String:__FILE__]  \ lineNumber:__LINE__                                  \ description:__VA_ARGS__];                             \ }                                                                       \ } while(0)   //---------------------打印日志--------------------------     //----------------------系统----------------------------   //获取系统版本 #define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue] #define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]   //获取当前语言 #define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])   //判断是否 Retina屏、设备是否%fhone 5、是否是iPad #define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO) #define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO) #define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)     //判断是真机还是模拟器 #if TARGET_OS_IPHONE //iPhone Device #endif   #if TARGET_IPHONE_SIMULATOR //iPhone Simulator #endif   //检查系统版本 #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)     //----------------------系统----------------------------     //----------------------内存----------------------------   //使用ARC和不使用ARC #if __has_feature(objc_arc) //compiling with ARC #else // compiling without ARC #endif   #pragma mark - common functions #define RELEASE_SAFELY(__POINTER) { [__POINTER release]; __POINTER = nil; }   //释放一个对象 #define SAFE_DELETE(P) if(P) { [P release], P = nil; }   #define SAFE_RELEASE(x) [x release];x=nil       //----------------------内存----------------------------     //----------------------图片----------------------------   //读取本地图片 #define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]   //定义UIImage对象 #define IMAGE(A) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]]   //定义UIImage对象 #define ImageNamed(_pointer) [UIImage imageNamed:[UIUtil imageName:_pointer]]   //建议使用前两种宏定义,性能高于后者 //----------------------图片----------------------------       //----------------------颜色类--------------------------- // 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]   //带有RGBA的颜色设置 #define COLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]   // 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)   //背景色 #define BACKGROUND_COLOR [UIColor colorWithRed:242.0/255.0 green:236.0/255.0 blue:231.0/255.0 alpha:1.0]   //清除背景色 #define CLEARCOLOR [UIColor clearColor]   #pragma mark - color functions #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)]   //----------------------颜色类--------------------------       //----------------------其他----------------------------   //方正黑体简体字体定义 #define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]     //定义一个API #define APIURL                @"http://xxxxx/" //登陆API #define APILogin              [APIURL stringByAppendingString:@"Login"]   //设置View的tag属性 #define VIEWWITHTAG(_OBJECT, _TAG)    [_OBJECT viewWithTag : _TAG] //程序的本地化,引用国际化的文件 #define MyLocal(x, ...) NSLocalizedString(x, nil)   //G－C－D #define BACK(block) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block) #define MAIN(block) dispatch_async(dispatch_get_main_queue(),block)   //NSUserDefaults 实例化 #define USER_DEFAULT [NSUserDefaults standardUserDefaults]     //由角度获取弧度 有弧度获取角度 #define degreesToRadian(x) (M_PI * (x) / 180.0) #define radianToDegrees(radian) (radian*180.0)/(M_PI)       //单例化一个类 #define SYNTHESIZE_SINGLETON_FOR_CLASS(classname) \ \ static classname *shared##classname = nil; \ \ + (classname *)shared##classname \ { \ @synchronized(self) \ { \ if (shared##classname == nil) \ { \ shared##classname = [[self alloc] init]; \ } \ } \ \ return shared##classname; \ } \ \ + (id)allocWithZone:(NSZone *)zone \ { \ @synchronized(self) \ { \ if (shared##classname == nil) \ { \ shared##classname = [super allocWithZone:zone]; \ return shared##classname; \ } \ } \ \ return nil; \ } \ \ - (id)copyWithZone:(NSZone *)zone \ { \ return self; \ }       #endif 转：http://www.cnblogs.com/ygm900/p/4519423.html