iOS--常用的宏

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我是靠谱客的博主无奈大地，最近开发中收集的这篇文章主要介绍iOS--常用的宏，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

/******** 尺寸 *******/
#define StatusBar_HEIGHT 20

#define NavigationBar_HEIGHT 44

#define NavigationBarIcon 20

#define TabBar_HEIGHT 49

#define TabBarIcon 30

#define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)

#define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)

/******** 打印 *******/
//替换NSLog来使用，debug模式下可以打印很多方法名，行信息。
#ifdef DEBUG
#   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
#else  
#   define DLog(...)  
#endif

//直接替换NSLog
#if DEBUG  
#define NSLog(FORMAT, ...) fprintf(stderr,"nfunction:%s line:%d content:%sn", __FUNCTION__, __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);  
#else  
#define NSLog(FORMAT, ...) nil  
#endif

//DEBUG  模式下打印日志,当前行以及弹出一个警告
#ifdef DEBUG
#   define ULog(fmt, ...)  { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:@"%sn [Line %d] ", __PRETTY_FUNCTION__, __LINE__] message:[NSString stringWithFormat:fmt, ##__VA_ARGS__]  delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil]; [alert show]; }
#else
#   define ULog(...)
#endif

/******** 系统宏 *******/
//获取版本
#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)

/******** 内存宏 *******/
//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

/******** 图片宏 *******/
//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]]

//前两种宏性能高，省内存
//第三个没有必要使用，因为我们可以使用Xcode的插件

/******** 颜色宏 *******/

// 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)]

/*******其他宏*****/
//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)

/******* 单例宏************/
#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; 
}