//系統獲取首字母- (NSString *) pinyinFirstLetter:(NSString*)sourceString { NSMutableString *source = [sourceString mutableCopy]; CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformMandarinLatin, NO); CFStringTransform((__bridge CFMutableStringRef)source, NULL, kCFStringTransformStripDiacritics, NO);//這一行是去聲調的 return source;}

#import "ViewController.h"#import "BMChineseSort.h"#import "Person.h"@interface ViewController (){ NSMutableArray<Person *> *dataArray;}//排序后的出現過的拼音首字母數組@property(nonatomic,strong)NSMutableArray *indexArray;//排序好的結果數組@property(nonatomic,strong)NSMutableArray *letterResultArr;@end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; //模擬數據加載 dataArray中得到Person的數組 [self loadData]; //BMChineseSort 文件包含兩個對單元格數據和右側字母的數組排序函數 //根據Person對象的 name 屬性 按中文 對 Person數組 排序 //每一個單元格的數據，排序好了的 self.indexArray = [BMChineseSort IndexWithArray:dataArray Key:@"name"]; //左側的字母數組，已經排序好了 self.letterResultArr = [BMChineseSort sortObjectArray:dataArray Key:@"name"]; UITableView *table = [[UITableView alloc] initWithFrame:self.view.frame]; table.delegate = self; table.dataSource = self; [self.view addSubview:table];}//加載模擬數據-(void)loadData{ NSArray *stringsToSort=[NSArray arrayWithObjects:       @"李白",@"張三",       @"重慶",@"重量",       @"調節",@"調用",       @"小白",@"小明",@"千玨",       @"黃家駒", @"鼠標",@"hello",@"多美麗",@"肯德基",@"##",       nil]; //模擬網絡請求接收到的數組對象 Person數組 dataArray = [[NSMutableArray alloc] initWithCapacity:0]; for (int i = 0; i<[stringsToSort count]; i++) {  Person *p = [[Person alloc] init];  p.name = [stringsToSort objectAtIndex:i];  p.number = i;  [dataArray addObject:p]; }}#pragma mark - UITableView -//section的titleHeader- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { return [self.indexArray objectAtIndex:section];}//section行數-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{ return [self.indexArray count];}//每組section個數- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{ return [[self.letterResultArr objectAtIndex:section] count];}//section右側index數組-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{ return self.indexArray;}//點擊右側索引表項時調用 索引與section的對應關系- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index{ return index;}//返回cell- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL"]; if (cell == nil){  cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"CELL"]; } //獲得對應的Person對象<替換為你自己的model對象> Person *p = [[self.letterResultArr objectAtIndex:indexPath.section] objectAtIndex:indexPath.row]; cell.textLabel.text = p.name; return cell;}@end