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!
#define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width #define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height
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:
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 当前Xcode支持iOS8及以上 #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
#define LRNotificationCenter [NSNotificationCenter defaultCenter]
#define LRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0 green:arc4random_uniform(256)/255.0 blue:arc4random_uniform(256)/255.0 alpha:1.0]
#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] // clear背景颜色 #define LRClearColor [UIColor clearColor]
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!
#ifdef DEBUG #define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__]) #else #define LRLog(...) #endif
#define LRWeakSelf(type) __weak typeof(type) weak##type = type; #define LRStrongSelf(type) __strong typeof(type) type = weak##type;
#define LRViewBorderRadius(View, Radius, Width, Color)\ \
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES];\
[View.layer setBorderWidth:(Width)];\
[View.layer setBorderColor:[Color CGColor]]
#define LRDegreesToRadian(x) (M_PI * (x) / 180.0)
#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)
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");
#define LRToast(str) CSToastStyle *style = [[CSToastStyle alloc] initWithDefaultStyle]; \ [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;\ });\
此宏定义同上一个类似,如下图:
// 加载 #define kShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES // 收起加载 #define HideNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = NO // 设置加载 #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()
//获取view的frame(不建议使用) //#define kGetViewWidth(view) view.frame.size.width //#define kGetViewHeight(view) view.frame.size.height //#define kGetViewX(view) view.frame.origin.x //#define kGetViewY(view) view.frame.origin.y //获取图片资源 #define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@"%@",imageName]]
#define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])
#if __has_feature(objc_arc) // ARC #else // MRC #endif
//判断是否为iPhone #define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) //判断是否为iPad #define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) //判断是否为ipod #define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"]) // 判断是否为 iPhone 5SE #define iPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f // 判断是否为iPhone 6/6s #define iPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f // 判断是否为iPhone 6Plus/6sPlus #define iPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f //获取系统版本 #define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue] //判断 iOS 8 或更高的系统版本 #define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))
#if TARGET_OS_IPHONE //iPhone Device #endif #if TARGET_IPHONE_SIMULATOR //iPhone Simulator #endif
//获取temp #define kPathTemp NSTemporaryDirectory() //获取沙盒 Document #define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject] //获取沙盒 Cache #define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]
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:
//GCD - 一次性执行 #define kDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock); //GCD - 在Main线程上运行 #define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock); //GCD - 开启异步线程 #define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), globalQueueBlocl);
很多小伙伴在定义一个常量字符串,都会定义成一个宏,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:
预编译
,const属于编译时刻
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
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,后把这个类导入PCH
文件中,我们就可任意的发挥啦!
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