extern BOOL whetherHaveNetwork;
/** 动画时间 */
static const NSTimeInterval YDAnimateTime = 0.5;
//#define YDAnimateTime 0.5
/** 无数据时的提示文字*/
#define noGoodsRemaindText @"当前无数据，请管理员云平台上传!"
/** RGB颜色 */
#define YDColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#define YDColorAlp(r, g, b, alp) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:alp]
#define YDColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]
/** 随机色 */
#define YDRandomColor kColor(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))
/** 系统主题颜色 */
#define YDSystemColor YDColor(15, 23, 27)
/** 每一页的数据 */
#define YDLimitPageNum @(20)
/** 注册 tableView */
#define YDRegisterTableViewNib(tableView,nibName) [tableView registerNib:[UINib nibWithNibName:nibName bundle:nil] forCellReuseIdentifier:nibName]
/** 注册 CollectionView */
#define YDRegisterCollectionViewNib(collectionView,nibName) [collectionView registerNib:[UINib nibWithNibName:nibName bundle:nil] forCellWithReuseIdentifier:nibName]
/** 弱引用 */
#define YDWeakSelf __weak typeof(self) weakSelf = self;
/** 沙盒Document路径 */
#define YDDocumentPath ([NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject])
/** 沙盒Cache路径 */
#define YDCachePath ([NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject])
/** 屏幕高度 */
#define YDScreenH ([UIScreen mainScreen].bounds.size.height)
/** 屏幕宽度 */
#define YDScreenW ([UIScreen mainScreen].bounds.size.width)
/** 弧度转角度 */
#define YDRADIANS_TO_DEGREES(radians) ((radians) * (180.0 / M_PI))
/** 角度转弧度 */
#define YDDEGREES_TO_RADIANS(angle) ((angle) / 180.0 * M_PI)
/** 是否为iOS7 */
#define iOS7 ([[UIDevice currentDevice].systemVersion doubleValue] >= 7.0)
/** 是否为4inch */
#define FourInch ([UIScreen mainScreen].bounds.size.height >= 568.0)
注意，要配置之才可在全局使用
