iOS 日常工作之常用宏定义大全
撰写于 2016-07-02
修改于 2016-08-20
前言:
在工作中, 很多小伙伴都会在PCH
文件定义一些常用的宏,但是又怕写这些简单的宏浪费时间,又有时候忘记怎么定义了怎么办?本人在工作中也是如此。所以在这里给大家分享一些常用的宏定义,喜欢的小伙伴可以直接在项目中使用(持续更新)!
为了大家使用方便,请点击GitHub - 宏定义头文件下载 !
1.获取屏幕宽度与高度
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| #define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
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根据一个网友(脱离语言)提醒, 如果支持横屏可以用下面的宏:
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| #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 #define SCREEN_WIDTH ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.width) #define SCREENH_HEIGHT ([[UIScreen mainScreen] respondsToSelector:@selector(nativeBounds)]?[UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale:[UIScreen mainScreen].bounds.size.height) #define SCREEN_SIZE ([[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) #else #define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height #define SCREEN_SIZE [UIScreen mainScreen].bounds.size #endif
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2.获取通知中心
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| #define LRNotificationCenter [NSNotificationCenter defaultCenter]
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3.设置随机颜色
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| #define LRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0 green:arc4random_uniform(256)/255.0 blue:arc4random_uniform(256)/255.0 alpha:1.0]
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4.设置RGB颜色/设置RGBA颜色
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| #define LRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0] #define LRRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a] #define LRClearColor [UIColor clearColor]
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5.自定义高效率的 NSLog
项目开发中,我们会在许多地方加上Log,但是发布的时候又不想用这些Log,我们也不可能一个一个的删除,所以自定义Log是必然的!
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| #ifdef DEBUG #define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__]) #else #define LRLog(...) #endif
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6.弱引用/强引用
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| #define LRWeakSelf(type) __weak typeof(type) weak##type = type; #define LRStrongSelf(type) __strong typeof(type) type = weak##type;
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7.设置 view 圆角和边框
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| #define LRViewBorderRadius(View, Radius, Width, Color)\ \ [View.layer setCornerRadius:(Radius)];\ [View.layer setMasksToBounds:YES];\ [View.layer setBorderWidth:(Width)];\ [View.layer setBorderColor:[Color CGColor]]
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8.由角度转换弧度 由弧度转换角度
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| #define LRDegreesToRadian(x) (M_PI * (x) / 180.0) #define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)
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9.设置加载提示框(第三方框架:Toast)
此宏定义非常好用,但是小伙伴需要CocoaPods导入第三方框架:Toast
使用方法如下:
LRToast(@"网络加载失败");
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| [kWindow makeToast:str duration:0.6 position:CSToastPositionCenter style:style] kWindow.userInteractionEnabled = NO dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.6 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{\ kWindow.userInteractionEnabled = YES })
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此宏定义同上一个类似,如下图:

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| #define kShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES #define HideNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = NO #define NetworkActivityIndicatorVisible(x) [UIApplication sharedApplication].networkActivityIndicatorVisible = x #define kWindow [UIApplication sharedApplication].keyWindow #define kBackView for (UIView *item in kWindow.subviews) { \ if(item.tag == 10000) \ { \ [item removeFromSuperview] UIView * aView = [[UIView alloc] init] aView.frame = [UIScreen mainScreen].bounds aView.tag = 10000 aView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3] [kWindow addSubview:aView] } \ } \ #define kShowHUDAndActivity kBackView;[MBProgressHUD showHUDAddedTo:kWindow animated:YES];kShowNetworkActivityIndicator() #define kHiddenHUD [MBProgressHUD hideAllHUDsForView:kWindow animated:YES] #define kRemoveBackView for (UIView *item in kWindow.subviews) { \ if(item.tag == 10000) \ { \ [UIView animateWithDuration:0.4 animations:^{ \ item.alpha = 0.0 } completion:^(BOOL finished) { \ [item removeFromSuperview] }] } \ } \ #define kHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()
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11.获取view的frame/图片资源
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| //获取view的frame(不建议使用) // // // // //获取图片资源
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12.获取当前语言
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| #define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
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13.使用 ARC 和 MRC
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| #if __has_feature(objc_arc) #else #endif
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14.判断当前的iPhone设备/系统版本
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| #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) #define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"]) #define iPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f #define iPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f #define iPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f #define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue] #define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))
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15.判断是真机还是模拟器
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| #if TARGET_OS_IPHONE #endif #if TARGET_IPHONE_SIMULATOR #endif
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16.沙盒目录文件
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| #define kPathTemp NSTemporaryDirectory() #define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] #define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
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17.GCD 的宏定义
很多小伙伴都非常烦写GCD的方法,所以在此定义为宏使用更加方便简洁!如下图:

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| #define kDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock); #define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock); #define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), globalQueueBlocl);
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宏与const 的使用:
很多小伙伴在定义一个常量字符串,都会定义成一个宏,最典型的例子就是服务器的地址。在此所有用宏定义常量字符的小伙伴以后就用const来定义吧!为什么呢 ?我们看看:
通过以上对比,我们以后在开发中如果定义一个常量字符串就用const,定义代码就用宏。我们来看看如何使用const,列举实际项目使用方法如下图:


在上图本人只是简单定义几个常量字符串,我们创建一个类只要在.h
和.m
中包含#import <Foundation/Foundation.h>
就可以,然后再.h
文件声明一个字符串,在.m
中实现就可以了,最后把这个类导入PCH
文件中,我们就可任意的发挥啦!