[IOS]UITableView分区+索引显示

效果：

步骤：

1.创建一个ViewController，New File->Cocoa Touch->Objective-C class->Class:ViewController,Subclass of:UIViewController

2.打开xib，在view中添加TableView，并将TableView的两个属性拖到File's Owner中，

可以设置tableview的分区样式，选择style

3.ViewController.h：

#import <UIKit/UIKit.h> @interface newViewController : UIViewController<UITableViewDataSource,UITableViewDelegate> @property (retain, nonatomic) IBOutlet UITableView *tableView; @property(retain,nonatomic)NSDictionary *dic; @property(retain,nonatomic)NSArray *keys; @end

#import "newViewController.h"  @interface newViewController ()  @end  @implementation newViewController  - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];     if (self) {         // Custom initialization     }     return self; }  - (void)viewDidLoad {     [super viewDidLoad];     NSString *path = [[NSBundle mainBundle] pathForResource:@"sortednames" ofType:@"plist"];     self.dic = [NSDictionary dictionaryWithContentsOfFile:path];          self.keys = [self.dic allKeys];     self.keys = [self.keys sortedArrayUsingSelector:@selector(compare:)]; }  //tableView有多少分区 -(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {     return [self.keys count]; }  //每个分区对应多少行 -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {     NSString *key = self.keys[section];//通过第几个分区拿到对应的key     NSArray *arr = [self.dic objectForKey:key];//通过这个key获得对应的Array     return [arr count]; }  -(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {     static NSString *str = @"str";     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:str];          if (cell == nil) {         cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:str];     }     int section = [indexPath section];     int row = [indexPath row];          NSString *key = self.keys[section];     NSArray *arr = [self.dic objectForKey:key];     cell.textLabel.text = arr[row];     return cell; } //在每个分区上显示什么内容 -(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {     return self.keys[section]; }  - (void)didReceiveMemoryWarning {     [super didReceiveMemoryWarning];     // Dispose of any resources that can be recreated. } //设置索引 -(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {     return self.keys; }  - (void)dealloc {     [_tableView release];     [self.keys release];     [self.dic release];     [super dealloc]; } @end