IOS中獲取手機通訊錄中的聯絡人信息：

/*** 加載本地聯絡人*/ 
- (void)loadLocalContacts 
{ 
  //新建一個通訊錄類 
  ABAddressBookRef addressBooks = nil; 
   
  if (DeviceVersion < 6.0) { 
    addressBooks = ABAddressBookCreate(); 
  } else { 
    addressBooks = ABAddressBookCreateWithOptions(NULL, NULL); 
    //獲取通訊錄權限 
    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); 
  } 
   
  //判別受權形態 
  if (ABAddressBookGetAuthorizationStatus()!=kABAuthorizationStatusAuthorized) { 
    return ; 
  } 
   
  //獲取通訊錄中的一切人 
  CFArrayRef allPeople = ABAddressBookCopyArrayOfAllPeople(addressBooks); 
  //通訊錄中人數 
  CFIndex nPeople = ABAddressBookGetPersonCount(addressBooks); 
  NSMutableArray *persons = [[NSMutableArray alloc] init]; 
  for (int i = 0; i < nPeople; i++) { 
    //獲取團體 
    ABRecordRef person = CFArrayGetValueAtIndex(allPeople, i); 
    //獲取團體名字 
    NSString *firstName = (NSString *)ABRecordCopyValue(person, kABPersonFirstNameProperty); 
    NSString *lastName = (NSString *)ABRecordCopyValue(person, kABPersonLastNameProperty); 
    NSMutableString *name = [[NSMutableString alloc] init]; 
    if (firstName == nil && lastName == nil) { 
      NSLog(@"名字不存在的狀況"); 
      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]; 
    } 
  } 
   
  //對聯絡人停止分組和排序 
  UILocalizedIndexedCollation *theCollation = [UILocalizedIndexedCollation currentCollation]; 
  NSInteger highSection = [[theCollation sectionTitles] count]; //中文環境下前往的應該是27，是a－z和＃，其他言語則不同 
   
  //_indexArray 是右側索引的數組，也是secitonHeader的標題 
  _indexArray = [[NSMutableArray alloc] initWithArray:[theCollation sectionTitles]]; 
   
  NSMutableArray *newSectionsArray = [[NSMutableArray alloc] initWithCapacity:highSection]; 
  //初始化27個空數組參加newSectionsArray 
  for (NSInteger index = 0; index < highSection; index++) { 
    NSMutableArray *array = [[NSMutableArray alloc] init]; 
    [newSectionsArray addObject:array]; 
    [array release]; 
  } 
   
  for (NSString *p in persons) { 
    //獲取name屬性的值所在的地位，比方"林丹"，首字母是L，在A~Z中排第11（第一位是0），sectionNumber就為11 
    NSInteger sectionNumber = [theCollation sectionForObject:p collationStringSelector:@selector(getFirstLetter)]; 
    //把name為“林丹”的p參加newSectionsArray中的第11個數組中去 
    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 是聯絡人數組（確切的說是二維數組） 
  self.contacts = newSectionsArray; 
  [newSectionsArray release]; 
   
  [self.tableView reloadData]; 
} 

特地把索引和tableView dataSource的代理辦法也貼一下：

- (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 NSString *identifier = @"contactCell"; 
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier]; 
  if (cell == nil) { 
    cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier]; 
  } 
   
  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; 
} 
 
//索引列點擊事情 
- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index 
{ 
  return index; 
} 

還有兩個很重要的辦法：

上面這個辦法是[theCollation sectionForObject:p collationStringSelector:@selector(getFirstLetter)]; 是這裡的p對象要完成的辦法，我這裡的p是NSString,你也可以用其他對象例如Person。

 NSString *ret = @""; 
  if (![self canBeConvertedToEncoding: NSASCIIStringEncoding]) {//假如是英語 
    if ([[self letters] length]>2) { 
      ret = [[self letters] substringToIndex:1]; 
    } 
  } 
  else { 
    ret = [NSString stringWithFormat:@"%c",[self characterAtIndex:0]]; 
  } 
  return ret; 
} 

上面這個辦法是NSString得類別辦法

- (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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