self.timeString = @"2017-04-16 13:08:06";
    
    //星期
    NSString *time0 = self.timeString.xh_formatWeekDay;
    
    //2017年04月16日
    NSString *time1 = self.timeString.xh_formatNianYueRi;
    
    //2017年04月
    NSString *time2 = self.timeString.xh_formatNianYue;
    
    //04月16日
    NSString *time3 = self.timeString.xh_formatYueRi;
    
    //2017年
    NSString *time4 = self.timeString.xh_formatNian;

    //13时08分01秒
    NSString *time5 = self.timeString.xh_formatShiFenMiao;
    
    //13时08分
    NSString *time6 = self.timeString.xh_formatShiFen;
    
    //08分01秒
    NSString *time7 = self.timeString.xh_formatFenMiao;
    
    //2017-04-16
    NSString *time8 = self.timeString.xh_format_yyyy_MM_dd;
    
    //2017-04
    NSString *time9 = self.timeString.xh_format_yyyy_MM;
    
    //04-16
    NSString *time10 = self.timeString.xh_format_MM_dd;
    
    //2017
    NSString *time11 = self.timeString.xh_format_yyyy;
    
    //13:08:06
    NSString *time12 = self.timeString.xh_format_HH_mm_ss;
    
    //13:08
    NSString *time13 = self.timeString.xh_format_HH_mm;
    
    //08:06
    NSString *time14 = self.timeString.xh_format_mm_ss;