常用的宏

本文摘錄其他文章所寫

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

//需要橫屏或者豎屏，獲取屏幕寬度與高度

  #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000 // 當前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

2.獲取通知中心

#define LRNotificationCenter [NSNotificationCenter defaultCenter]

3.設置隨機顏色

#define LRRandomColor [UIColor colorWithRed:arc4random_uniform(256)/255.0 green:arc4random_uniform(256)/255.0 blue:arc4random_uniform(256)/255.0 alpha:1.0]

4.設置RGB顏色/設置RGBA顏色

#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背景顏色
#define LRClearColor [UIColor clearColor]

5.自定義高效率的 NSLog

 #ifdef DEBUG
#define LRLog(...) NSLog(@"%s 第%d行 \n %@\n\n",__func__,__LINE__,[NSString stringWithFormat:__VA_ARGS__])
#else
#define LRLog(...)
#endif

6.弱引用/強引用

#define LRWeakSelf(type)  __weak typeof(type) weak##type = type;
#define LRStrongSelf(type)  __strong typeof(type) type = weak##type;

7.設置 view 圓角和邊框

#define LRViewBorderRadius(View, Radius, Width, Color)\
\
[View.layer setCornerRadius:(Radius)];\
[View.layer setMasksToBounds:YES];\
[View.layer setBorderWidth:(Width)];\
[View.layer setBorderColor:[Color CGColor]]

8.由角度轉換弧度 由弧度轉換角度

#define LRDegreesToRadian(x) (M_PI * (x) / 180.0)
#define LRRadianToDegrees(radian) (radian*180.0)/(M_PI)

9.設置加載提示框（第三方框架：Toast）

#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.設置加載提示框（第三方框架：MBProgressHUD）

// 加載
#define kShowNetworkActivityIndicator() [UIApplication sharedApplication].networkActivityIndicatorVisible = YES
// 收起加載
#define HideNetworkActivityIndicator()      [UIApplication sharedApplication].networkActivityIndicatorVisible = NO
// 設置加載
#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()

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.獲取當前語言

#define LRCurrentLanguage ([[NSLocale preferredLanguages] objectAtIndex:0])

13.使用 ARC 和 MRC

#if __has_feature(objc_arc)
// ARC
#else
// MRC
#endif

14.判斷當前的iPhone設備/系統版本

//判斷是否為iPhone
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

//判斷是否為iPad
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

//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

 //獲取系統版本
#define IOS_SYSTEM_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]

//判斷 iOS 8 或更高的系統版本
#define IOS_VERSION_8_OR_LATER (([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)? (YES):(NO))

15.判斷是真機還是模擬器

#if TARGET_OS_IPHONE
//iPhone Device
#endif

#if TARGET_IPHONE_SIMULATOR
//iPhone Simulator
#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

//GCD - 一次性執行
#define kDISPATCH_ONCE_BLOCK(onceBlock) static dispatch_once_t onceToken; dispatch_once(&onceToken, onceBlock);

//GCD - 在Main線程上運行
#define kDISPATCH_MAIN_THREAD(mainQueueBlock) dispatch_async(dispatch_get_main_queue(), mainQueueBlock);

//GCD - 開啟異步線程
#define kDISPATCH_GLOBAL_QUEUE_DEFAULT(globalQueueBlock) dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), globalQueueBlocl);
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