iOS常用宏定义

iOS开发过程中，使用的一些常用宏定义

字符串是否为空

#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )

数组是否为空

#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)

字典是否为空

#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)

是否是空对象

#define kObjectIsEmpty(_object) (_object == nil 
|| [_object isKindOfClass:[NSNull class]] 
|| ([_object respondsToSelector:@selector(length)] && [(NSData *)_object length] == 0) 
|| ([_object respondsToSelector:@selector(count)] && [(NSArray *)_object count] == 0))

获取屏幕宽度与高度 ( " ":连接行标志，连接上下两行 )

//屏宽
#define kScreenWidth 
([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.width)
//屏高
#define kScreenHeight 
([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)] ? [UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale : [UIScreen mainScreen].bounds.size.height)
//屏的size(宽、高)
#define kScreenSize 
([[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)

一些常用的缩写：

//APP对象 （单例对象）
#define kApplication [UIApplication sharedApplication]
//主窗口 （keyWindow）
#define kKeyWindow [UIApplication sharedApplication].keyWindow
//APP对象的delegate
#define kAppDelegate [UIApplication sharedApplication].delegate
//NSUserDefaults实例化
#define kUserDefaults [NSUserDefaults standardUserDefaults]
//通知中心 （单例对象）
#define kNotificationCenter [NSNotificationCenter defaultCenter]

APP版本号

#define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]

系统版本号

#define kSystemVersion [[UIDevice currentDevice] systemVersion]

获取当前语言

#define kCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

判断是否为iPhone

#define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

判断是否为iPad

#define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

获取沙盒的Document路径

#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]

获取沙盒的temp路径

#define kTempPath NSTemporaryDirectory()

获取沙盒的Cache路径

#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

判断是真机还是模拟器

#if TARGET_OS_IPHONE
//真机
#endif
#if TARGET_IPHONE_SIMULATOR
//模拟器
#endif

开发的时候打印，但是发布的时候不打印的NSLog

#ifdef DEBUG
#define NSLog(...) NSLog(@"%s 第%d行 
 %@

",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define NSLog(...)
#endif

颜色

//RGB格式
#define kRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]

//RGBA格式 （A：alpha）
#define kRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]

//随机色生成
#define kRandomColor KRGBColor(arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0,arc4random_uniform(256)/255.0) 

//16进制形式
#define kColorWithHex(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]

弱引用/强引用

#define kWeakSelf(type)  __weak typeof(type) weak##type = type;

#define kStrongSelf(type) __strong typeof(type) type = weak##type;

由角度转换为弧度

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

由弧度转换为角度

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

获取一段时间间隔

#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();

#define kEndTime  NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)

宏(指令)定义

#ifndef MacroDefinition_h  //如果没定义

#define MacroDefinition_h

iOS常用宏 定义

iOS常用宏定义