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          • iOS開發(fā)中那些高效常用的宏

                   iOS開發(fā)過程中使用一些常用的宏可以提高開發(fā)效率,提高代碼的重用性;將這些宏放到一個頭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。

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

            做了一些分類和注釋,可以根據(jù)自己習慣再添加或者刪除或者修改這些宏進行使用。

            //
            //  MacroDefinition.h
            //  MacroDefinitionDemo
            //
            //  Created by 新風作浪 on 13-6-9.
            //  Copyright (c) 2013年 SpinningSphere Labs. All rights reserved.
            //
            #ifndef MacroDefinition_h
            #define MacroDefinition_h
            //-------------------獲取設(shè)備大小-------------------------
            //NavBar高度
            #define NavigationBar_HEIGHT 44
            //獲取屏幕 寬度、高度
            #define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
            #define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)
            //-------------------獲取設(shè)備大小-------------------------
            //-------------------打印日志-------------------------
            //DEBUG  模式下打印日志,當前行
            #ifdef DEBUG
            #   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
            #else
            #   define DLog(...)
            #endif
            //重寫NSLog,Debug模式下打印日志和當前行數(shù)
            #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,當前行 并彈出一個警告
            #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--------------------------
            //----------------------系統(tǒng)----------------------------
            //獲取系統(tǒng)版本
            #define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
            #define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]
            //獲取當前語言
            #define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
            //判斷是否 Retina屏、設(shè)備是否%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)
            //判斷是真機還是模擬器
            #if TARGET_OS_IPHONE
            //iPhone Device
            #endif
            #if TARGET_IPHONE_SIMULATOR
            //iPhone Simulator
            #endif
            //檢查系統(tǒng)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)
            //----------------------系統(tǒng)----------------------------
            //----------------------內(nèi)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; }
            //釋放一個對象
            #define SAFE_DELETE(P) if(P) { [P release], P = nil; }
            #define SAFE_RELEASE(x) [x release];x=nil
            //----------------------內(nèi)存----------------------------
            //----------------------圖片----------------------------
            //讀取本地圖片
            #define LOADIMAGE(file,ext) [UIImage p_w_picpathWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]
            //定義UIImage對象
            #define IMAGE(A) [UIImage p_w_picpathWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]]
            //定義UIImage對象
            #define ImageNamed(_pointer) [UIImage p_w_picpathNamed:[UIUtil p_w_picpathName:_pointer]]
            //建議使用前兩種宏定義,性能高于后者
            //----------------------圖片----------------------------
            //----------------------顏色類---------------------------
            // rgb顏色轉(zhuǎn)換(16進制->10進制)
            #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]
            //帶有RGBA的顏色設(shè)置
            #define COLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]
            // 獲取RGB顏色
            #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)]
            //----------------------顏色類--------------------------
            //----------------------其他----------------------------
            //方正黑體簡體字體定義
            #define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]
            //定義一個API
            #define APIURL                @"http://xxxxx/"
            //登陸API
            #define APILogin              [APIURL stringByAppendingString:@"Login"]
            //設(shè)置View的tag屬性
            #define VIEWWITHTAG(_OBJECT, _TAG)    [_OBJECT viewWithTag : _TAG]
            //程序的本地化,引用國際化的文件
            #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 實例化
            #define USER_DEFAULT [NSUserDefaults standardUserDefaults]
            //由角度獲取弧度 有弧度獲取角度
            #define degreesToRadian(x) (M_PI * (x) / 180.0)
            #define radianToDegrees(radian) (radian*180.0)/(M_PI)
            //單例化一個類
            #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

            MacroDefinition.h  下載地址:https://github.com/XFZLDXF/Macro

            附件:http://down.51cto.com/data/2362997

            本文題目:iOS開發(fā)中那些高效常用的宏
            轉(zhuǎn)載來源:http://www.jbt999.com/article4/gsedie.html

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