#ifndef Public_h
#define Public_h
// 1.判斷是否為iOS7
#define iOS7 ([[UIDevice currentDevice].systemVersion doubleValue] >= 7.0)
#define IOS_VERSION [[[UIDevice currentDevice] systemVersion] floatValue]
// 2.獲得RGB顏色
#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)
// 隨機色
#define RandomColor                 RGB(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))
// 3.是否為4inch
#define fourInch ([UIScreen mainScreen].bounds.size.height == 568)
// 4.屏幕大小尺寸
#define screen_width [UIScreen mainScreen].bounds.size.width
#define screen_height [UIScreen mainScreen].bounds.size.height
//重新設定view的Y值
#define setFrameY(view, newY) view.frame = CGRectMake(view.frame.origin.x, newY, view.frame.size.width, view.frame.size.height)
#define setFrameX(view, newX) view.frame = CGRectMake(newX, view.frame.origin.y, view.frame.size.width, view.frame.size.height)
#define setFrameH(view, newH) view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, newH)
#define setFrameW(view, newW) view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y, newW, view.frame.size.height)
//取view的坐標及長寬
#define W(view)    view.frame.size.width
#define H(view)    view.frame.size.height
#define X(view)    view.frame.origin.x
#define Y(view)    view.frame.origin.y
#define ViewBottomY(view) Y(view)+H(view)
#define ViewWidthX(view) X(view)+W(view)
//5.常用對象
#define APPDELEGATE ((AppDelegate *)[UIapplication sharedApplication].delegate)
#define APP_TOPWIMDOW [[UIApplication sharedApplication].windows lastObject]
//重寫NSLog,Debug模式下打印日志和當前行數
#if DEBUG
#define NSLog(FORMAT, ...) fPRintf(stderr,"line%d content:%s/n",__LINE__,[[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);
//fprintf(stderr,"/nfunction:%s line:%d content:%s", __FUNCTION__, __LINE__, [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);
#else
#define NSLog(FORMAT, ...) nil
#endif
//----------------------其他----------------------------
// View 圓角和加邊框
#define ViewBorderRadius(View, Radius, Width, Color)/
/
[View.layer setCornerRadius:(Radius)];/
[View.layer setMasksToBounds:YES];/
[View.layer setBorderWidth:(Width)];/
[View.layer setBorderColor:[Color CGColor]]
// View 圓角
#define ViewRadius(View, Radius)/
/
[View.layer setCornerRadius:(Radius)];/
[View.layer setMasksToBounds:YES]
// 是否ipad#define isPad (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)// 是否iPad#define someThing (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)? ipad: iphone //獲取系統版本#define IOS_VERSION ［[UIDevice currentDevice] systemVersion] floatValue]#define CurrentSystemVersion ［UIDevice currentDevice] systemVersion]
//方正黑體簡體字體定義#define FONT(F) [UIFont fontWithName:@"FZHTJW--GB1-0" size:F]
#endif /* Public_h */
以及單例模式
// .h文件的實現#define SingletonH(methodName) + (instancetype)shared##methodName;// .m文件的實現#if __has_feature(objc_arc) // 是ARC#define SingletonM(methodName) /static id _instace = nil; /+ (id)allocWithZone:(struct _NSZone *)zone /{ /if (_instace == nil) { /static dispatch_once_t onceToken; /dispatch_once(&onceToken, ^{ /_instace = [super allocWithZone:zone]; /}); /} /return _instace; /} //- (id)init /{ /static dispatch_once_t onceToken; /dispatch_once(&onceToken, ^{ /_instace = [super init]; /}); /return _instace; /} //+ (instancetype)shared##methodName /{ /return [[self alloc] init]; /} /+ (id)copyWithZone:(struct _NSZone *)zone /{ /return _instace; /} //+ (id)mutableCopyWithZone:(struct _NSZone *)zone /{ /return _instace; /}#else // 不是ARC#define SingletonM(methodName) /static id _instace = nil; /+ (id)allocWithZone:(struct _NSZone *)zone /{ /if (_instace == nil) { /static dispatch_once_t onceToken; /dispatch_once(&onceToken, ^{ /_instace = [super allocWithZone:zone]; /}); /} /return _instace; /} //- (id)init /{ /static dispatch_once_t onceToken; /dispatch_once(&onceToken, ^{ /_instace = [super init]; /}); /return _instace; /} //+ (instancetype)shared##methodName /{ /return [[self alloc] init]; /} //- (oneway void)release /{ //} //- (id)retain /{ /return self; /} //- (NSUInteger)retainCount /{ /return 1; /} /+ (id)copyWithZone:(struct _NSZone *)zone /{ /    return _instace; /} / /+ (id)mutableCopyWithZone:(struct _NSZone *)zone /{ /    return _instace; /}#endif  //Singleton.h其中這個單例模式先在UserInfoModel.h中
SingletonH(UserInfoModel);再在.m中
SingletonM(UserInfoModel);
初始化賦值
//UserInfoModel是個單例，此處初始化后，數據會一直隨應用程序的啟動而存在 UserInfoModel *userInfoModel = [UserInfoModel mj_objectWithKeyValues:responseData.responSEObject[0]];
//其中mj_objectWithKeyValues是mj方法的其中一種，詳情請看本人另一篇文章介紹常用mj調用獲取單例中的值，比如獲取id
[UserInfoModel sharedUserInfoModel].ID