轉(zhuǎn)載于：http://blog.csdn.net/hbblzjy/article/details/51859570

//安全釋放#defineRELEASE_SAFELY(__Pointer) do{[__Pointer release],__Pointer = nil;} while(0)// 屏幕的物理高度#defineScreenHeight? [UIScreen mainScreen].bounds.size.height// 屏幕的物理寬度#defineScreenWidth? [UIScreen mainScreen].bounds.size.width// 調(diào)試#defineNSLOG_FUNCTION NSLog(@"%s,%d",__FUNCTION__,__LINE__)//----------------------圖片類————————————————————————————————————————//讀取本地圖片#defineLOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]//定義UIImage對(duì)象#defineIMAGE(A) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:A ofType:nil]]//定義UIImage對(duì)象#defineImageNamed(_pointer) [UIImage imageNamed:_pointer]//———————————————————————顏色類———————————————————————————-----—————————————// rgb顏色轉(zhuǎn)換（16進(jìn)制->10進(jìn)制）#defineUIColorFromRGB(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#defineCOLOR(R, G, B, A) [UIColor colorWithRed:R/255.0 green:G/255.0 blue:B/255.0 alpha:A]// 獲取RGB顏色#defineRGBA(r,g,b,a) [UIColor colorWithRed:r/255.0f green:g/255.0f blue:b/255.0f alpha:a]#defineRGB(r,g,b) RGBA(r,g,b,1.0f)//背景色#defineBACKGROUND_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#defineCLEARCOLOR [UIColor clearColor]#pragmamark - color functions#defineRGBCOLOR(r,g,b) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:1]#defineRGBACOLOR(r,g,b,a) [UIColor colorWithRed:(r)/255.0f green:(g)/255.0f blue:(b)/255.0f alpha:(a)]//———————————————————————TAG宏———————————————————————————-----—————————————//viewWithTag#defineVIEWWITHTAG(_OBJECT, _TAG)[_OBJECT viewWithTag : _TAG]//———————————————————————單例模式宏———————————————————————————-----—————————————//.h文件處的聲明#defineDEFINE_SINGLETON_FOR_HEADER(className) \\+ (className *)shared##className;//.m文件處的聲明#defineDEFINE_SINGLETON_FOR_CLASS(className) \\+ (className *)shared##className { \staticclassName *shared##className = nil; \staticdispatch_once_t onceToken; \dispatch_once(&onceToken, ^{ \shared##className = [[self alloc] init]; \}); \returnshared##className; \}//———————————————————————單例模式———————————————————————————-----—————————————staticDataBaseHandle * handle = nil;+ (DataBaseHandle *)shareInstance{@synchronized(self){if(!handle) {handle = [[DataBaseHandle alloc] init];}}returnhandle;}—————————————不用你把所有NSLog的刪除或注釋撕阎，直接修改#if判斷的值就行了(1執(zhí)行,0不執(zhí)行)——————————————#if1#defineNSLog(FORMAT, ...) fprintf(stderr,"[%s:%d行] %s\n",[[[NSString stringWithUTF8String:__FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);#else#defineNSLog(FORMAT, ...) nil#endif#defineNEED_OUTPUT_LOG 0#ifNEED_OUTPUT_LOG#defineSLog(xx, ...)? NSLog(xx, ##__VA_ARGS__)#defineSLLog(xx, ...)? NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)#defineSLLogRect(rect) \SLLog(@"%s x=%f, y=%f, w=%f, h=%f",#rect, rect.origin.x, rect.origin.y, \rect.size.width, rect.size.height)#defineSLLogPoint(pt) \SLLog(@"%s x=%f, y=%f",#pt, pt.x, pt.y)#defineSLLogSize(size) \SLLog(@"%s w=%f, h=%f",#size, size.width, size.height)#defineSLLogColor(_COLOR) \SLLog(@"%s h=%f, s=%f, v=%f",#_COLOR, _COLOR.hue, _COLOR.saturation, _COLOR.value)#defineSLLogSuperViews(_VIEW) \{for(UIView* view = _VIEW; view; view = view.superview) { SLLog(@"%@", view); } }#defineSLLogSubViews(_VIEW) \{for(UIView* viewin[_VIEW subviews]) { SLLog(@"%@", view); } }#else#defineSLog(xx, ...)? ((void)0)#defineSLLog(xx, ...)? ((void)0)#endif

參考別人的定義：

1.獲取屏幕寬度與高度

#defineSCREEN_WIDTH[UIScreen mainScreen].bounds.size.width#defineSCREENH_HEIGHT[UIScreen mainScreen].bounds.size.height//iOS8以后甲馋，設(shè)備橫屏受葛，[UIScreen mainScreen].bounds.size的值是寬大于高的，即iOS8以后這個(gè)值跟屏幕方向有關(guān)了#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000? // 當(dāng)前Xcode支持iOS8及以上#define SCREEN_WIDTH? ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width)#define SCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height)#define? SCREEN_SIZE? ? ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?CGSizeMake([UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale,[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale):[UIScreen mainScreen].bounds.size)#else#define SCREEN_WIDTH? [UIScreen mainScreen].bounds.size.width#define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height#define? SCREEN_SIZE? [UIScreen mainScreen].bounds.size#endif

2.獲取通知中心

#defineLRNotificationCenter [NSNotificationCenter defaultCenter]

3.設(shè)置隨機(jī)顏色

#defineLRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0green:arc4random_uniform(256)/255.0blue:arc4random_uniform(256)/255.0alpha:1.0]

4.設(shè)置RGB顏色/設(shè)置RGBA顏色

#defineLRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0green:(g)/255.0blue:(b)/255.0alpha:1.0]#defineLRRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0green:(r)/255.0blue:(r)/255.0alpha:a]// clear背景顏色#defineLRClearColor [UIColor clearColor]

5.自定義高效率的 NSLog

項(xiàng)目開發(fā)中堕绩，我們會(huì)在許多地方加上Log，但是發(fā)布的時(shí)候又不想用這些Log堪伍，我們也不可能一個(gè)一個(gè)的刪除靡砌，所以自定義Log是必然的！

#ifdefDEBUG#defineLRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])#else#defineLRLog(...)#endif

6.弱引用/強(qiáng)引用

#defineLRWeakSelf(type)__weaktypeof(type)weak##type=type;#defineLRStrongSelf(type)__strongtypeof(type)type=weak##type;

使用方法.png

第二種使用方法，定義完弱引用宏之后袜漩，直接敲weak.png

7.設(shè)置 view 圓角和邊框

#define LRViewBorderRadius(View, Radius, Width, Color)\\[View.layersetCornerRadius:(Radius)];\[View.layersetMasksToBounds:YES];\[View.layersetBorderWidth:(Width)];\[View.layersetBorderColor:[Color CGColor]]

8.由角度轉(zhuǎn)換弧度 由弧度轉(zhuǎn)換角度

#define LRDegreesToRadian(x)(M_PI* (x) / 180.0)

#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)

9.設(shè)置加載提示框（第三方框架：Toast）

此宏定義非常好用绪爸，但是小伙伴需要CocoaPods導(dǎo)入第三方框架：Toast

使用方法如下：

LRToast(@"網(wǎng)絡(luò)加載失敗");

#define LRToast(str)? ? ? ? ? ? ? CSToastStyle *style =[[CSToastStyle alloc]initWithDefaultStyle];\[kWindow? makeToast:str duration:0.6 position:CSToastPositionCenter style:style];\kWindow.userInteractionEnabled = NO;\dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.6 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{\kWindow.userInteractionEnabled = YES;\});\

10.設(shè)置加載提示框（第三方框架：MBProgressHUD）

此宏定義同上一個(gè)類似，如下圖：

MBProgressHUD提示框.png

// 加載#definekShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES// 收起加載#defineHideNetworkActivityIndicator()? ? ? [UIApplication sharedApplication].networkActivityIndicatorVisible = NO// 設(shè)置加載#defineNetworkActivityIndicatorVisible(x)? [UIApplication sharedApplication].networkActivityIndicatorVisible = x#definekWindow [UIApplication sharedApplication].keyWindow#definekBackView? ? ? ? for (UIView *item in kWindow.subviews) { \if(item.tag ==10000) \{ \[item removeFromSuperview]; \UIView * aView = [[UIView alloc] init]; \aView.frame = [UIScreen mainScreen].bounds; \aView.tag =10000; \aView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3]; \[kWindow addSubview:aView]; \} \} \#definekShowHUDAndActivity kBackView;[MBProgressHUD showHUDAddedTo:kWindow animated:YES];kShowNetworkActivityIndicator()#definekHiddenHUD [MBProgressHUD hideAllHUDsForView:kWindow animated:YES]#definekRemoveBackView? ? ? ? for (UIView *item in kWindow.subviews) { \if(item.tag ==10000) \{ \[UIView animateWithDuration:0.4animations:^{ \item.alpha =0.0; \} completion:^(BOOL finished) { \[item removeFromSuperview]; \}]; \} \} \#definekHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()

11.獲取view的frame/圖片資源

//獲取view的frame#definekGetViewWidth(view)? view.frame.size.width#definekGetViewHeight(view) view.frame.size.height#definekGetViewX(view)? ? ? view.frame.origin.x#definekGetViewY(view)? ? ? view.frame.origin.y//獲取圖片資源#definekGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]

12.獲取當(dāng)前語(yǔ)言

#defineLRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

13.使用 ARC 和 MRC

#if__has_feature(objc_arc)// ARC#else// MRC#endif

14.判斷當(dāng)前的iPhone設(shè)備/系統(tǒng)版本

//判斷是否為iPhone#defineIS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)//判斷是否為iPad#defineIS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)//判斷是否為ipod#defineIS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])// 判斷是否為 iPhone 5SE#defineiPhone5SE [[UIScreen mainScreen] bounds].size.width ==320.0f&& [[UIScreen mainScreen] bounds].size.height ==568.0f// 判斷是否為iPhone 6/6s#defineiPhone6_6s [[UIScreen mainScreen] bounds].size.width ==375.0f&& [[UIScreen mainScreen] bounds].size.height ==667.0f// 判斷是否為iPhone 6Plus/6sPlus#defineiPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width ==414.0f&& [[UIScreen mainScreen] bounds].size.height ==736.0f//獲取系統(tǒng)版本#defineIOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]//判斷 iOS 8 或更高的系統(tǒng)版本#defineIOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))

15.判斷是真機(jī)還是模擬器

#ifTARGET_OS_IPHONE//iPhone Device#endif#ifTARGET_IPHONE_SIMULATOR//iPhone Simulator#endif

16.沙盒目錄文件

//獲取temp#definekPathTemp NSTemporaryDirectory()//獲取沙盒 Document#definekPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]//獲取沙盒 Cache#definekPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

17.GCD 的宏定義

很多小伙伴都非常煩寫GCD的方法宙攻，所以在此定義為宏使用更加方便簡(jiǎn)潔奠货！如下圖：

GCD 宏使用方法.png

//GCD - 一次性執(zhí)行#definekDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock);//GCD - 在Main線程上運(yùn)行#definekDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock);//GCD - 開啟異步線程#definekDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), globalQueueBlocl);

宏與const 的使用:

很多小伙伴在定義一個(gè)常量字符串，都會(huì)定義成一個(gè)宏座掘，最典型的例子就是服務(wù)器的地址递惋。在此所有用宏定義常量字符的小伙伴以后就用const來(lái)定義吧！為什么呢 溢陪？我們看看：

宏的用法： 一般字符串抽成宏萍虽，代碼抽成宏使用。

const用法：一般常用的字符串定義成const（對(duì)于常量字符串蘋果推薦我們使用const）嬉愧。

宏與const區(qū)別：

1.編譯時(shí)刻不同贩挣，宏屬于預(yù)編譯，const屬于編譯時(shí)刻

2.宏能定義代碼没酣，const不能王财，多個(gè)宏對(duì)于編譯會(huì)相對(duì)時(shí)間較長(zhǎng)，影響開發(fā)效率裕便，調(diào)試過(guò)慢绒净，const只會(huì)編譯一次，縮短編譯時(shí)間偿衰。

3.宏不會(huì)檢查錯(cuò)誤挂疆，const會(huì)檢查錯(cuò)誤

通過(guò)以上對(duì)比，我們以后在開發(fā)中如果定義一個(gè)常量字符串就用const下翎，定義代碼就用宏缤言。我們來(lái)看看如何使用const，列舉實(shí)際項(xiàng)目使用方法如下圖：

FANCommonConst.h中聲明一個(gè)常量字符串.png

FANCommonConst.m中實(shí)現(xiàn)一個(gè)常量字符串.png

在上圖本人只是簡(jiǎn)單定義幾個(gè)常量字符串视事，我們創(chuàng)建一個(gè)類只要在.h和.m中包含#import 就可以胆萧，然后再.h文件聲明一個(gè)字符串，在.m中實(shí)現(xiàn)就可以了俐东，最后把這個(gè)類導(dǎo)入PCH文件中跌穗，我們就可任意的發(fā)揮啦！