iOS开发过程中，使用的一些常用宏定义
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字符串是否为空
#define kStringIsEmpty(str) ([str isKindOfClass:[NSNull class]] || str == nil || [str length] < 1 ? YES : NO )
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数组是否为空
#define kArrayIsEmpty(array) (array == nil || [array isKindOfClass:[NSNull class]] || array.count == 0)
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字典是否为空
#define kDictIsEmpty(dic) (dic == nil || [dic isKindOfClass:[NSNull class]] || dic.allKeys == 0)
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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))
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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)
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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]
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APP版本号
#define kAppVersion [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"]
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系统版本号
#define kSystemVersion [[UIDevice currentDevice] systemVersion]
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获取当前语言
#define kCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
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判断是否为iPhone
#define kISiPhone (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
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判断是否为iPad
#define kISiPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
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获取沙盒的Document路径
#define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
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获取沙盒的temp路径
#define kTempPath NSTemporaryDirectory()
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获取沙盒的Cache路径
#define kCachePath [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
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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
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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 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__]) #else #define NSLog(...) #endif
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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]
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弱引用/强引用
#define kWeakSelf(type) __weak typeof(type) weak##type = type;#define kStrongSelf(type) __strong typeof(type) type = weak##type;
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由角度转换为弧度
#define kDegreesToRadian(x) (M_PI * (x) / 180.0)
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由弧度转换为角度
#define kRadianToDegrees(radian) (radian * 180.0) / (M_PI)
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获取一段时间间隔
#define kStartTime CFAbsoluteTime start = CFAbsoluteTimeGetCurrent();#define kEndTime NSLog(@"Time: %f", CFAbsoluteTimeGetCurrent() - start)
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宏(指令)定义
#ifndef MacroDefinition_h //如果没定义#define MacroDefinition_h