在工作中, 很多小伙伴都會(huì)在PCH文件定義一些常用的宏，但是又怕寫(xiě)這些簡(jiǎn)單的宏浪費(fèi)時(shí)間，又有時(shí)候忘記怎么定義了怎么辦？本人在工作中也是如此。所以在這里給大家分享一些常用的宏定義，喜歡的小伙伴可以直接在項(xiàng)目中使用（持續(xù)更新）！
為了大家使用方便，請(qǐng)點(diǎn)擊GitHub - 宏定義頭文件下載！

1.獲取屏幕寬度與高度

define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width

define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height

根據(jù)一個(gè)網(wǎng)友(脫離語(yǔ)言)提醒, 如果支持橫屏可以用下面的宏:

__IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 當(dāng)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)

define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width

define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height

define SCREEN_SIZE [UIScreen mainScreen].bounds.size

endif

2.獲取通知中心

define LRNotificationCenter [NSNotificationCenter defaultCenter]

3.設(shè)置隨機(jī)顏色

define LRRandomColor [UIColor colorWithRed:arc4random_uniform()/255.0 green:arc4random_uniform()/255.0 blue:arc4random_uniform()/255.0 alpha:]

4.設(shè)置RGB顏色/設(shè)置RGBA顏色

define LRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:]

define LRRGBAColor(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(r)/255.0 blue:(r)/255.0 alpha:a]

// clear背景顏色

define LRClearColor [UIColor clearColor]

5.自定義高效率的 NSLog

項(xiàng)目開(kāi)發(fā)中，我們會(huì)在許多地方加上Log，但是發(fā)布的時(shí)候又不想用這些Log，我們也不可能一個(gè)一個(gè)的刪除，所以自定義Log是必然的！

ifdef DEBUG

define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",func,LINE,[NSString stringWithFormat:VA_ARGS])

define LRLog(...)

endif

6.弱引用/強(qiáng)引用

define LRWeakSelf() __weak typeof() weak##type =

define LRStrongSelf() __strong typeof( weak##

使用方法.png

第二種使用方法，定義完弱引用宏之后，直接敲weak.png

7.設(shè)置 view 圓角和邊框

define LRViewBorderRadius(View, Radius, Width, Color)\

[View.layer CornerRadius:(Radius)];
[View.layer MasksToBounds:YES];
[View.layer BorderWidth:(Width)];
[View.layer BorderColor:[Color CGColor]]

8.由角度轉(zhuǎn)換弧度由弧度轉(zhuǎn)換角度

define LRDegreesToRadian ( * (x) / 180.0)

define LRRadianToDegrees(radian) (radian*180.0)/

9.設(shè)置加載提示框（第三方框架：Toast）

此宏定義非常好用，但是小伙伴需要CocoaPods導(dǎo)入第三方框架：Toast

使用方法如下：
LRToast(@"網(wǎng)絡(luò)加載失敗");

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;);\

10.設(shè)置加載提示框（第三方框架：MBProgressHUD）

此宏定義同上一個(gè)類(lèi)似，如下圖：

MBProgressHUD提示框.png

define kShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES

// 收起加載

define HideNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = NO

// 設(shè)置加載

define NetworkActivityIndicatorVisible(x) [UIApplication sharedApplication].networkActivityIndicatorVisible = x

define kWindow [UIApplication sharedApplication].keyWindow

define kBackView for (UIView *item in kWindow.subviews) { \

(item.tag == 10000)
{
[item removeFromSuperview];
UIView * aView = [[UIView alloc] init];
aView.frame = [UIScreen mainScreen].bounds;
aView.tag = 10000;
aView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:];
[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) { \

(item.tag == 10000)
{
[UIView animateWithDuration: animations:^{
item.alpha = ;
} completion:^(BOOL finished) {
[item removeFromSuperview];
}];
}
} \

define kHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()

11.獲取view的frame/圖片資源

//獲取view的frame（不建議使用）
//#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

//獲取圖片資源

define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@,imageName]]

12.獲取當(dāng)前語(yǔ)言

define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:])

13.使用 ARC 和 MRC

__has_feature(objc_arc)

// ARC

// MRC

endif

14.判斷當(dāng)前的iPhone設(shè)備/系統(tǒng)版本

//判斷是否為iPhone

define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

define IS_IPHONE ([[[UIDevice currentDevice] model] isEqualToString:@"iPhone"])

//判斷是否為iPad

define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

define IS_IPAD ([[[UIDevice currentDevice] model] isEqualToString:@"iPad"])

//判斷是否為ipod

define IS_IPOD ([[[UIDevice currentDevice] model] isEqualToString:@"iPod touch"])

// 判斷是否為 iPhone 5SE

define iPhone5SE [[UIScreen mainScreen] bounds].size.width == 320.0f && [[UIScreen mainScreen] bounds].size.height == 568.0f

// 判斷是否為iPhone 6/6s

define iPhone6_6s [[UIScreen mainScreen] bounds].size.width == 375.0f && [[UIScreen mainScreen] bounds].size.height == 667.0f

// 判斷是否為iPhone 6Plus/6sPlus

define iPhone6Plus_6sPlus [[UIScreen mainScreen] bounds].size.width == 414.0f && [[UIScreen mainScreen] bounds].size.height == 736.0f

//獲取系統(tǒng)版本
//這個(gè)方法不是特別靠譜

define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]

//建議使用這個(gè)方法

define IOS_SYSTEM_STRING [[UIDevice currentDevice] systemVersion]

//判斷 iOS 8 或更高的系統(tǒng)版本

define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=)? (YES):(NO))

15.判斷是真機(jī)還是模擬器

// 判斷是不是iOS系統(tǒng)，如果是iOS系統(tǒng)在真機(jī)和模擬器輸出都是YES

TARGET_OS_IPHONE

endif

(TARGET_IPHONE_SIMULATOR)

      // 在模擬器的情況下

    // 在真機(jī)情況下

endif

16.沙盒目錄文件

//獲取temp

define kPathTemp NSTemporaryDirectory()

//獲取沙盒 Document

define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]

//獲取沙盒 Cache

define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

17.GCD 的宏定義

很多小伙伴都非常煩寫(xiě)GCD的方法，所以在此定義為宏使用更加方便簡(jiǎn)潔！如下圖：

GCD 宏使用方法.png

//GCD - 一次性執(zhí)行

define kDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock);

//GCD - 在Main線(xiàn)程上運(yùn)行

define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock);

//GCD - 開(kāi)啟異步線(xiàn)程

define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, ), globalQueueBlocl);

宏與const 的使用:

很多小伙伴在定義一個(gè)常量字符串，都會(huì)定義成一個(gè)宏，最典型的例子就是服務(wù)器的地址。在此所有用宏定義常量字符的小伙伴以后就用const來(lái)定義吧！為什么呢？我們看看：

宏的用法：一般字符串抽成宏，代碼抽成宏使用。
const用法：一般常用的字符串定義成const（對(duì)于常量字符串蘋(píng)果推薦我們使用const）。
宏與const區(qū)別：
1.編譯時(shí)刻不同，宏屬于預(yù)編譯，const屬于編譯時(shí)刻
2.宏能定義代碼，const不能，多個(gè)宏對(duì)于編譯會(huì)相對(duì)時(shí)間較長(zhǎng)，影響開(kāi)發(fā)效率，調(diào)試過(guò)慢，const只會(huì)編譯一次，縮短編譯時(shí)間。
3.宏不會(huì)檢查錯(cuò)誤，const會(huì)檢查錯(cuò)誤

通過(guò)以上對(duì)比，我們以后在開(kāi)發(fā)中如果定義一個(gè)常量字符串就用const，定義代碼就用宏。我們來(lái)看看如何使用const，列舉實(shí)際項(xiàng)目使用方法如下圖：

FANCommonConst.h中聲明一個(gè)常量字符串.png

FANCommonConst.m中實(shí)現(xiàn)一個(gè)常量字符串.png

在上圖本人只是簡(jiǎn)單定義幾個(gè)常量字符串，我們創(chuàng)建一個(gè)類(lèi)只要在.h和.m中包含#import <Foundation/Foundation.h>就可以，然后再.h文件聲明一個(gè)字符串，在.m中實(shí)現(xiàn)就可以了，最后把這個(gè)類(lèi)導(dǎo)入PCH文件中，我們就可任意的發(fā)揮啦！

如果喜歡的小伙伴請(qǐng)點(diǎn)一個(gè)贊吧，歡迎留言補(bǔ)充與給出不足之處！

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iOS 日常工作之常用宏定義大全

define SCREEN_WIDTH [UIScreen mainScreen].bounds.size.width

define SCREENH_HEIGHT [UIScreen mainScreen].bounds.size.height

__IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 當(dāng)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)

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()/255.0 green:arc4random_uniform()/255.0 blue:arc4random_uniform()/255.0 alpha:]

define LRRGBColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:]

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]

ifdef DEBUG

define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",func,LINE,[NSString stringWithFormat:VA_ARGS])

define LRLog(...)

endif

define LRWeakSelf() __weak typeof() weak##type =

define LRStrongSelf() __strong typeof( weak##

define LRViewBorderRadius(View, Radius, Width, Color)\

define LRDegreesToRadian ( * (x) / 180.0)

define LRRadianToDegrees(radian) (radian*180.0)/

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) { \

define kShowHUDAndActivity kBackView;[MBProgressHUD showHUDAddedTo:kWindow animated:YES];kShowNetworkActivityIndicator()

define kHiddenHUD [MBProgressHUD hideAllHUDsForView:kWindow animated:YES]

define kRemoveBackView for (UIView *item in kWindow.subviews) { \

define kHiddenHUDAndAvtivity kRemoveBackView;kHiddenHUD;HideNetworkActivityIndicator()

define kGetImage(imageName) [UIImage imageNamed:[NSString stringWithFormat:@,imageName]]

define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:])

__has_feature(objc_arc)

endif

define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

define IS_IPHONE ([[[UIDevice currentDevice] model] isEqualToString:@"iPhone"])

define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

define IS_IPAD ([[[UIDevice currentDevice] model] isEqualToString:@"iPad"])

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_SYSTEM_STRING [[UIDevice currentDevice] systemVersion]

define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=)? (YES):(NO))

TARGET_OS_IPHONE

endif

(TARGET_IPHONE_SIMULATOR)

endif

define kPathTemp NSTemporaryDirectory()

define kPathDocument [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]

define kPathCache [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) firstObject]

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, ), globalQueueBlocl);

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