+(void)execAfter:(double)seconds cb:(DelayExecCB)cb;//延迟执行
+(UIColor *)getColor:(NSString*)hexColor alpha:(float)alpha;//从16进制获得颜色
+(NSString*)trim:(NSString*)string;//去掉字符串中的空格
+(int)getScreenWidth;//获得屏幕宽
+(int)getScreenHeight;//获得屏幕高
+(UIImage*)clipImage:(UIImage*)srcimg area:(CGRect)area;//图片剪裁
+(float)getStatusBarHeight;//获得状态栏高度
+(float)getNaviLanHeight:(UIViewController*)sender; //获得导航栏高度
+(void)setTitleWithNaviItem:(UINavigationItem*)item //设置导航栏标题
                      title:(NSString*)title 
          fonntSize:(int)f
          textColor:(UIColor*)c;

+(void)setRightBtnWithNaviItem:(UINavigationItem*)item //设置右按钮
                   stateNormal:(UIImage*)img_normal
             stateDown:(UIImage*)img_down
                 frame:(CGRect)frame
             action:(SEL)action
             target:(id)target;

+(void)setLeftBtnWithNaviItem:(UINavigationItem*)item //设置左边按钮
                  stateNormal:(UIImage*)img_normal
            stateDown:(UIImage*)img_down
                frame:(CGRect)frame
               action:(SEL)action
               target:(id)target;
//获得圆角view 指定某个角用which 多个角用|连接 如:UIRectCornerTopLeft|UIRectCornerTopRight
+(UIView*)getRoundCornerView:(UIView*)target radius:(int)radius which:(UIRectCorner)which;

+(NSString*)getAppVersion; //获得app版本
+(NSString*)getAppBuild; //获得app Build
//时间戳转时间，format，例如:@"MM月dd日HH:mm:ss"
+(NSString*)timeSpToDateStr:(SInt32)timeSp format:(NSString*)format;
+(NSDictionary*)strToJson:(NSString *)str; //字符串转字典
+(BOOL)isBetweenFromHour:(NSInteger)fromHour toHour:(NSInteger)toHour;//当前时间是否在指定时间内
+(NSString*)getIPAddressByHostName:(NSString*)strHostName;//根据域名获得ip