整理一下开发中常用的宏定义，正所谓工欲善其事必先利其器，没有一些方便好用的东西，就能让编码变得更加高效~~~

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<pre><code class="hljs">
//获取屏幕 宽度、高度

define DV_W ([UIScreen mainScreen].bounds.size.width)

define DV_H ([UIScreen mainScreen].bounds.size.height)

//获取系统版本

define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]

define CurrentSystemVersion [[UIDevice currentDevice] systemVersion]

//获取当前语言

define CurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

//判断是否 Retina屏、设备是否%fhone 5、是否是iPad

define isRetina ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)

define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//判断设备的操做系统是不是ios7

define IOS7 ([[[UIDevice currentDevice].systemVersion doubleValue] >= 7.0]

//判断设备的操做系统是不是ios8

define IOS8 ([[[UIDevice currentDevice].systemVersion doubleValue] >= 8.0]

//判断设备的操做系统是不是ios9

define IOS9 ([[[UIDevice currentDevice].systemVersion doubleValue] >= 9.0]

//判断当前设备是不是iPhone4或者4s

define IPHONE4S (([[UIScreen mainScreen] bounds].size.height)==480)

//判断当前设备是不是iPhone5

define IPHONE5 (([[UIScreen mainScreen] bounds].size.height)==568)

//判断当前设备是不是iPhone6

define IPHONE6 (([[UIScreen mainScreen] bounds].size.height)==667)

//判断当前设备是不是iPhone6Plus

define IPHONE6_PLUS (([[UIScreen mainScreen] bounds].size.height)>=736)

//获取当前屏幕的高度

define kMainScreenHeight ([UIScreen mainScreen].applicationFrame.size.height)

//获取当前屏幕的宽度

define kMainScreenWidth ([UIScreen mainScreen].applicationFrame.size.width)

//判断是真机还是模拟器

if TARGET_OS_IPHONE

//iPhone Device

endif

if TARGET_IPHONE_SIMULATOR

//iPhone Simulator

endif

//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)

define THE_THEME_COLORA(a) RGBA(6,187,106,a)

//方正黑体简体字体定义

define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]

//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)

//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)

//打印当前方法的名称

define ITTDPRINTMETHODNAME() ITTDPRINT(@"%s", PRETTY_FUNCTION)

</code>

再来个GCD的

<code class='hljs'>
//G－C－D

define BACK(block) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), block)

//G-C-D主线程

define MAIN(block) dispatch_async(dispatch_get_main_queue(),block)

//延迟GCD时间

define DisTime(time) dispatch_time(DISPATCH_TIME_NOW, time * NSEC_PER_SEC)

//延迟GCD

define DisBACK(disTime,block) dispatch_after(disTime, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void){dispatch_async(dispatch_get_main_queue(), block);});

</code>
延迟时间的用法如下
<code class='hljs'>
 //GCD延迟0.5秒执行执行
    DisBACK(DisTime(0.5f),^
    {
        //这里的代码延迟在主线程中执行
    });

</code>

引用楼下大神的回复再加一段：
<code class='hljs'>
#ifdef DEBUG

#define HLog(...) NSLog(__VA_ARGS__)

#else

#define HLog(...)

#endif

用16进制的方式获取颜色：

//RGB Color macro

#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]

//RGB color macro with alpha

#define UIColorFromRGBWithAlpha(rgbValue,a) [UIColor \

colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 \

green:((float)((rgbValue & 0xFF00) >> 8))/255.0 \

blue:((float)(rgbValue & 0xFF))/255.0 alpha:a]
</code>
</pre>

>是不是感觉有了这些东西后，效率变得更高了~~~