iOS开发常见的宏定义（实用）

 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。
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。

    #ifndef MacroDefinition_h
    #define MacroDefinition_h
    //AppDelegate

    #define APPDELEGATE [(AppDelegate*)[UIApplication sharedApplication]  delegate]
    //----------------------系统设备相关----------------------------
    //获取设备屏幕尺寸
    #define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
    #define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)//应用尺寸
    #define APP_WIDTH [[UIScreen mainScreen]applicationFrame].size.width
    #define APP_HEIGHT [[UIScreen mainScreen]applicationFrame].size.height
    //获取系统版本
    #define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
    #define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]
    #define isIOS4 ([[[UIDevice currentDevice] systemVersion] intValue]==4)
    #define isIOS5 ([[[UIDevice currentDevice] systemVersion] intValue]==5)
    #define isIOS6 ([[[UIDevice currentDevice] systemVersion] intValue]==6)
    #define isAfterIOS4 ([[[UIDevice currentDevice] systemVersion] intValue]>4)
    #define isAfterIOS5 ([[[UIDevice currentDevice] systemVersion] intValue]>5)
    #define isAfterIOS6 ([[[UIDevice currentDevice] systemVersion] intValue]>6)
    //获取当前语言
    #define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

    //判断是否 Phone 4/5/6 是否是iPad
    #define Phone4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
    #define Phone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
    #define Phone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)
    #define Phone6Plus ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242,2208), [[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
    //----------------------系统设备相关----------------------------

    //----------------------内存相关----------------------------
    //使用ARC和不使用ARC
    #if __has_feature(objc_arc)
    //compiling with ARC
    #else
    // compiling without ARC
    #endif
    //释放一个对象
    #define SAFE_DELETE(P) if(P) { [P release], P = nil; }
    #define SAFE_RELEASE(x) [x release];x=nil
    //----------------------内存相关----------------------------

    //----------------------图片相关----------------------------
    //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:_pointer]
    //可拉伸的图片
    #define ResizableImage(name,top,left,bottom,right) [[UIImage imageNamed:name] resizableImageWithCapInsets:UIEdgeInsetsMake(top,left,bottom,right)]
    #define ResizableImageWithMode(name,top,left,bottom,right,mode) [[UIImage imageNamed:name] resizableImageWithCapInsets:UIEdgeInsetsMake(top,left,bottom,right) resizingMode:mode]
    //建议使用前两种宏定义,性能高于后者
    //----------------------图片相关----------------------------

    //----------------------颜色相关---------------------------
    // 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]
    // 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]
    //----------------------颜色相关--------------------------

    //----------------------其他----------------------------
    //方正黑体简体字体定义
    #define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]
    //file
    //读取文件的文本内容,默认编码为UTF-8
    #define FileString(name,ext)            [[NSString alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(name) ofType:(ext)] encoding:NSUTF8StringEncoding error:nil]
    #define FileDictionary(name,ext)        [[NSDictionary alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(name) ofType:(ext)]]
    #define FileArray(name,ext)             [[NSArray alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:(name) ofType:(ext)]]
    //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)
    //Alert
    #define ALERT(msg) [[[UIAlertView alloc] initWithTitle:nil message:msg delegate:nil cancelButtonTitle:@"ok" otherButtonTitles:nil] show]

    //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)
    //----------------------其他-------------------------------

    //----------------------视图相关----------------------------
    //设置需要粘贴的文字或图片
    #define PasteString(string)   [[UIPasteboard generalPasteboard] setString:string];
    #define PasteImage(image)     [[UIPasteboard generalPasteboard] setImage:image];

    //得到视图的left top的X,Y坐标点
    #define VIEW_TX(view) (view.frame.origin.x)
    #define VIEW_TY(view) (view.frame.origin.y)

    //得到视图的right bottom的X,Y坐标点
    #define VIEW_BX(view) (view.frame.origin.x + view.frame.size.width)
    #define VIEW_BY(view) (view.frame.origin.y + view.frame.size.height )

    //得到视图的尺寸:宽度、高度
    #define VIEW_W(view)  (view.frame.size.width)
    #define VIEW_H(view)  (view.frame.size.height)
    //得到frame的X,Y坐标点
    #define FRAME_TX(frame)  (frame.origin.x)
    #define FRAME_TY(frame)  (frame.origin.y)
    //得到frame的宽度、高度
    #define FRAME_W(frame)  (frame.size.width)
    #define FRAME_H(frame)  (frame.size.height)
    //----------------------视图相关----------------------------

    //---------------------打印日志--------------------------
    //Debug模式下打印日志,当前行,函数名
    #if DEBUG
    #define DLog(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,函数名 并弹出一个警告
    #ifdef DEBUG
    #   define  WDLog(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 NSLog(...)
    #endif
    //打印Frame
    #define LogFrame(frame) NSLog(@"frame[X=%.1f,Y=%.1f,W=%.1f,H=%.1f",frame.origin.x,frame.origin.y,frame.size.width,frame.size.height)
    //打印Point
    #define LogPoint(point) NSLog(@"Point[X=%.1f,Y=%.1f]",point.x,point.y)
    //---------------------打印日志--------------------------
    #endif

原文地址：https://www.cnblogs.com/Free-Thinker/p/11175711.html