iOS 日期 周几

    NSDate*date = [NSDatedate];

    NSCalendar*calendar = [NSCalendarcurrentCalendar];

    NSDateComponents*comps;

    comps =[calendar components:NSCalendarUnitWeekdayfromDate:date];

    NSDateFormatter * dateFormatter = [[NSDateFormatteralloc]init];

    [dateFormatter setDateFormat:@"YYYY年MM月dd日 EEEE"];

    NSString *DateTime = [dateFormatterstringFromDate:date];

    return DateTime;