一，效果图。

二，工程图。

三，代码。

RootViewController.h

#import 
     
      @interface RootViewController : UIViewController
      
       {    UITableView * city;    NSDictionary * dic;}@property(nonatomic,strong) NSArray * keyArray;@end
      
     

 

RootViewController.m

#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController@synthesize keyArray;- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //初始化界面    [self initBackgroundView];   }#pragma -mark -functions-(void)initBackgroundView{    city = [[UITableView alloc] initWithFrame:CGRectMake(0, 0, 320, 460-44) style:UITableViewStylePlain];    city.delegate = self;    city.dataSource = self;    [self.view addSubview:city];        dic = [[NSDictionary alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"citydict" ofType:@"plist"]];    self.keyArray = [dic.allKeys sortedArrayUsingDescriptors:[NSArray arrayWithObjects:[NSSortDescriptor sortDescriptorWithKey:nil ascending:YES], nil]];}#pragma -mark -UITableViewDelegate-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return dic.count;}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    NSArray * array = [dic objectForKey:[self.keyArray objectAtIndex:section]];    return array.count;}-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{    return [self.keyArray objectAtIndex:section];}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:@"ID"];    if(cell == nil){        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:@"ID"];    }    cell.textLabel.text = [[dic objectForKey:[self.keyArray objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];    return cell;}-(NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{    return self.keyArray;}-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    NSLog(@"---didSelectRowAtIndexPath--");}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}