Get local Address book contacts in IOS and alphabetical sort _ios

iOS to get contact information from the phone address book:

/*** Load Local Contact */-(void) loadlocalcontacts {//Create a new Address Book class Abaddressbookref addressbooks = nil; 
  if (Deviceversion < 6.0) {addressbooks = Abaddressbookcreate (); 
    else {addressbooks = abaddressbookcreatewithoptions (null, NULL); 
    Get Address Book permissions dispatch_semaphore_t sema = dispatch_semaphore_create (0); Abaddressbookrequestaccesswithcompletion (addressbooks, ^ (bool granted, cferrorref error) {dispatch_semaphore_signal 
    (sema);}; 
    Dispatch_semaphore_wait (Sema, dispatch_time_forever); 
  Dispatch_release (SEMA); 
  //Judge Authorization status if (Abaddressbookgetauthorizationstatus ()!=kabauthorizationstatusauthorized) {return; 
  //Get everyone in the Address book Cfarrayref allpeople = Abaddressbookcopyarrayofallpeople (addressbooks); 
  Number of people in the address book Cfindex npeople = Abaddressbookgetpersoncount (addressbooks); 
  Nsmutablearray *persons = [[Nsmutablearray alloc] init]; for (int i = 0; i < npeople i++) {//get personal abrecordref person = CfarraygetvalueAtindex (allpeople, i); 
    Get personal name nsstring *firstname = (NSString *) abrecordcopyvalue (person, kabpersonfirstnameproperty); 
    NSString *lastname = (NSString *) abrecordcopyvalue (person, kabpersonlastnameproperty); 
    nsmutablestring *name = [[Nsmutablestring alloc] init]; 
      if (FirstName = = Nil && LastName = = nil) {NSLog (@ "The name does not exist"); 
    name = nil; 
    } if (lastName) {[Name appendstring:lastname]; 
    } if (firstName) {[Name appendstring:firstname]; 
    } abmultivalueref Tmlphone = Abrecordcopyvalue (person, kabpersonphoneproperty); 
    NSString *telphone = (NSString *) abmultivaluecopyvalueatindex (tmlphone, 0); 
      if (Telphone!= nil) {telphone = [telphone stringbyreplacingoccurrencesofstring:@]-"withstring:@" "]; 
      NSString *title = [NSString stringwithformat:@ "%@ (%@)", Name,telphone]; 
    [Persons Addobject:title]; To group and sort contacts Uilocalizedindexedcollation *thecollation= [Uilocalizedindexedcollation currentcollation]; Nsinteger highsection = [[Thecollation sectiontitles] count]; Chinese environment should be returned 27, is a-Z and #, other languages are different//_indexarray is the right index of the array, but also the secitonheader title _indexarray = [[Nsmutablearray alloc] I 
   
  Nitwitharray:[thecollation Sectiontitles]]; 
  Nsmutablearray *newsectionsarray = [[Nsmutablearray alloc] initwithcapacity:highsection];  Initializes 27 empty arrays to join Newsectionsarray for (Nsinteger index = 0; index < highsection; index++) {Nsmutablearray *array = 
    [[Nsmutablearray alloc] init]; 
    [Newsectionsarray Addobject:array]; 
  [Array release]; For (NSString *p in persons) {//Get the location of the value of the Name property, such as "Lindane", the first letter is L, 11th in the A~z (first is 0), Sectionnumber is one nsinte 
    Ger Sectionnumber = [thecollation sectionforobject:p collationstringselector: @selector (getfirstletter)]; 
    Add p with Name "Lindane" to the 11th array in Newsectionsarray to Nsmutablearray *sectionnames = Newsectionsarray[sectionnumber]; 
  [Sectionnames Addobject:p]; for (int i = 0; i < Newsectionsarray.count; 
    i++) {Nsmutablearray *sectionnames = newsectionsarray[i]; 
      if (Sectionnames.count = = 0) {[Newsectionsarray removeobjectatindex:i]; 
      [_indexarray removeobjectatindex:i]; 
    i--; 
  }//_contacts is a group of contact numbers (specifically two-dimensional array) self.contacts = Newsectionsarray; 
   
  [Newsectionsarray release]; 
[Self.tableview Reloaddata]; 
 }

By the way, also paste the index and TableView DataSource proxy method:

-(Nsinteger) Numberofsectionsintableview: (UITableView *) TableView {return self.contacts.count; }-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (nsinteger) Section {return [self.contacts[ 
Section] count]; }-(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) IndexPath {static N 
  Sstring *identifier = @ "Contactcell"; 
  UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:identifier]; if (cell = = nil) {cell = [[UITableViewCell alloc] Initwithstyle:uitableviewcellstyledefault Reuseidentifier:identifi 
  ER]; 
  } cell.imageView.image = [UIImage imagenamed:@ "Default_head"]; 
  Cell.textLabel.text = [Self.contacts objectatindex:indexpath.section][indexpath.row]; 
return cell;  }-(NSString *) TableView: (UITableView *) TableView titleforheaderinsection: (nsinteger) Section {return [_indexarray 
Objectatindex:section]; }-(Nsarray *) Sectionindextitlesfortableview: (uitablEview *) TableView {return _indexarray; }//Index column Click Event-(Nsinteger) TableView: (UITableView *) TableView sectionforsectionindextitle: (NSString *) title Atindex: (NS 
Integer) index {return index; 
 }

There are two important ways to do this:

The following method is [thecollation sectionforobject:p collationstringselector: @selector (Getfirstletter)]; Is the method here for the P object to implement, my p here is nsstring, you can also use other objects such as person.

 NSString *ret = @ ""; 
  if (![ Self canbeconvertedtoencoding:nsasciistringencoding]) {//If it is English if 
    ([[Self letters] length]>2) { 
      ret = [ Self letters] substringtoindex:1]; 
    } 
  else { 
    ret = [nsstring stringwithformat:@ '%c ', [self characteratindex:0]]; 
  } 
  return ret; 
} 

The following method is a NSString class method.

-(NSString *) letters{ 
  nsmutablestring *letterstring = [nsmutablestring string]; 
  int len = [self length]; 
  for (int i = 0;i < len;i++) 
  { 
    NSString *onechar = [[self substringfromindex:i] substringtoindex:1]; 
    if (![ Onechar canbeconvertedtoencoding:nsasciistringencoding]) { 
      Nsarray *tema = makePinYin2 ([Onechar Characteratindex : 0]); 
      if ([TemA count]>0) { 
        Onechar = [TemA objectatindex:0]; 
      } 
    } 
    [Letterstring Appendstring:onechar]; 
  } 
  return letterstring; 
} 

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