Iphone 排序具有键的NsmutableArray

我有一个包含两个对象的数组，每个对象有31个键。我正在按tableview字母顺序显示@“FirstName”。现在我的问题是如何根据"FirstName"排列其他键。我希望数组按名字排序

下面是我正在加载到

NSMutableArray

中的Web服务的响应

(NSMutableArray *) $2 = 0x002afa40 <__NSArrayM 0x2afa40>
{
    AtQRid = "Hiiiiiiiii\n";
    City = HKJH;
    Company = BMBJ;
    Email = HJKHJKH;
    EmailStatus = KJHK;
    EventID = HJBJHGH;
    FBStatus = KJHK;
    FirstName = JHGHGJKBN;
    FollowUPDate = HJHKJ;
    FollowUPTypeID = KH;
    ImageURL = VGHV;
    LastName = MBN;
    LeadID = H;
    LinkedinStatus = HKH;
    Notes = JKHKH;
    PhoneNo = HJK;
    Rating = KJNK;
    ReminderStatus = KJHK;
    SalesForceStatus = KJHK;
    State = HJHKH;
    SurveyQAnswer1 = KJ;
    SurveyQAnswer2 = HKH;
    SurveyQAnswer3 = KJ;
    SurveyQAnswer4 = HK;
    SurveyQuestion1 = KHK;
    SurveyQuestion2 = JHK;
    SurveyQuestion3 = HH;
    SurveyQuestion4 = KJ;
    SyncStatus = HKJKH;
    TwitterStatus = KHJK;
    UserID = KJBNMN;
},
{
    AtQRid = "byeeeeeeeeeeeeeeeeeee\n";
    City = hyd;
    Company = GlobalNest;
    Email = "abhi_norules@yahoo.com";
    EmailStatus = hahahahah;
    EventID = 7689;
    FBStatus = "hey guys";
    FirstName = Abhishek;
    FollowUPDate = 3849934;
    FollowUPTypeID = kjsndjkvndsk;
    ImageURL = "www.image.com";
    LastName = Naidu;
    LeadID = 123456789;
    LinkedinStatus = "good looking ";
    Notes = "fksd jsdk skdj sdkjks dksjd dmndsn dksndskjkdj gkdjk jdkjdsk sdjksjsdn msd sdnsdnksdjksdjksd sdkn dsmsdnm sd";
    PhoneNo = 84377847549;
    Rating = 5star;
    ReminderStatus = kjsdjsdf;
    SalesForceStatus = "i donno";
    State = ap;
    SurveyQAnswer1 = jshdsdjfh;
    SurveyQAnswer2 = kjshfjkhf;
    SurveyQAnswer3 = kjsdjsdnn;
    SurveyQAnswer4 = kjnsjdvnds;
    SurveyQuestion1 = jsdkfds;
    SurveyQuestion2 = "kjnsdv,";
    SurveyQuestion3 = kjskdvk;
    SurveyQuestion4 = jskd;
    SyncStatus = jnsdnmsdm;
    TwitterStatus = "hey hi";
    UserID = 3456;
}

（NSMutableArray*）$2=0x002afa40
{
AtQRid=“hiiii\n”；
城市=HKJH；
公司=BMBJ；
Email=HJKHJKH；
EmailStatus=KJHK；
EventID=HJBJGH；
FBStatus=KJHK；
FirstName=JHGHGJKBN；
FollowUPDate=HJHKJ；
FollowUPTypeID=KH；
ImageURL=VGHV；
LastName=MBN；
LeadID=H；
LinkedIn状态=HKH；
注=JKHKH；
PhoneNo=HJK；
额定值=KJNK；
提醒状态=KJHK；
SalesForceStatus=KJHK；
State=HJHKH；
测量qanswer1=KJ；
SurveyQAnswer2=HKH；
测量Qanswer3=KJ；
SurveyQAnswer4=香港；
调查问题1=KHK；
调查问题2=JHK；
调查问题3=HH；
调查问题4=KJ；
SyncStatus=HKJKH；
TwitterStatus=KHJK；
UserID=KJBNMN；
},
{
AtQRid=“byeeee\n”；
城市=路政署；
公司=GlobalNest；
Email=“abhi_norules@yahoo.com";
EmailStatus=哈哈哈；
EventID=7689；
FBStatus=“嘿，伙计们”；
名字=阿披实；
FollowUPDate=3849934；
FollowUPTypeID=kjsndjkvndsk；
ImageURL=“www.image.com”；
LastName=Naidu；
LeadID=123456789；
LinkedinStatus=“好看”；
注释=“fksd jsdk skdj sdkjks dksjd dmndsn dksndskjkdj gkdjk jdkjdsk SDJKSJDSDN msd sdnsdnksdjksdjksd sdkn dsmsdnm sd”；
电话号码=84377847549；
评级=5星；
提醒状态=kjsdjsdf；
SalesForceStatus=“i donno”；
State=ap；
SurveyQAnswer1=jshdsdjfh；
测量QANSWER2=kjshfjkhf；
SurveyQAnswer3=kjsdjsdnn；
SurveyQAnswer4=kjnsjdvnds；
调查问题1=jsdkfds；
调查问题2=“kjnsdv”；
调查问题3=kjskdvk；
调查问题4=jskd；
SyncStatus=jnsdnmsdm；
TwitterStatus=“嗨”；
UserID=3456；
}

NSSortDescriptor *descriptor = [NSSortDescriptor 
   sortDescriptorWithKey:@"FirstName" ascending:YES];
NSArray *sortedArray = [originalArray sortedArrayUsingDescriptors:
   [NSArray arrayWithObject:descriptor]];