iOS开发常用的宏定义

作者: my_杨哥 | 来源:发表于2016-12-28 15:34 被阅读489次

    一个好的iOS开发工程师必须学会使用宏定义,不仅可以提高开发效率,而且高端、大气、上档次。下面是我总结的一些常用的宏定义

    • 获取屏幕宽度与高度
    #define SCREEN_WIDTH   [UIScreen mainScreen].bounds.size.width
    #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
    
    • 判断手机型号
    #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
    #define SCREEN_MAX_LENGTH (MAX(SCREEN_WIDTH, SCREEN_HEIGHT))
    #define IS_IPHONE_4 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)
    #define IS_IPHONE_5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)
    #define IS_IPHONE_6  (IS_IPHONE && SCREEN_MAX_LENGTH == 667.0)
    #define IS_IPHONE_6P (IS_IPHONE && SCREEN_MAX_LENGTH == 736.0)
    
    • 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))
    
    • 一些缩写
    #define kApplication        [UIApplication sharedApplication]
    #define kKeyWindow          [UIApplication sharedApplication].keyWindow
    #define kAppDelegate        [UIApplication sharedApplication].delegate
    #define kUserDefaults       [NSUserDefaults standardUserDefaults]
    #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]
    
    • 获取设备版本
    #define IOS_7  [[UIDevice currentDevice].systemVersion floatValue] >= 7.0
    #define IOS_8  [[UIDevice currentDevice].systemVersion floatValue] >= 8.0
    #define IOS_9  [[UIDevice currentDevice].systemVersion floatValue] >= 9.0
    #define IOS_10 [[UIDevice currentDevice].systemVersion floatValue] >= 10.0
    
    • 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Document路径
    #define kDocumentPath [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]
    
    • 获取沙盒temp路径
    #define kTempPath NSTemporaryDirectory()
    
    • 获取沙盒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 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
    #else
    #define NSLog(...)
    #endif
    //解决Xcode8+iOS10打印不全的问题
    #ifdef DEBUG
    #define MSLog(format, ...) printf("[%s] %s [%d行] %s\n", __TIME__, [[[NSString stringWithUTF8String: __FILE__] lastPathComponent] UTF8String], __LINE__, [[NSString stringWithFormat:format, ## __VA_ARGS__] UTF8String]);
    #else
    #define MSLog(format, ...)
    #endif
    
    • 颜色
    #define kRGBColor(r, g, b)     [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
    #define kRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]
    #define kRandomColor           kRGBColor(arc4random_uniform(256),arc4random_uniform(256),arc4random_uniform(256))
    
    #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;
    
    • 由角度转换弧度
    #define kDegreesToRadian(x)      (M_PI * (x) / 180.0)
    
    • 由弧度转换角度
    #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)
    

    大家记住要把这些宏定义写在PCH文件中哦~

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