沒有點擊索引的時候的效果圖:

點擊索引後的效果圖:

代碼:
RootViewController.h
#import <UIKit/UIKit.h>
@interface RootViewController : UIViewController
<UITableViewDelegate,UITableViewDataSource>
{
UITableView * city;
NSDictionary * dic;
}
@property(nonatomic,strong) NSArray * keyArray;
@end
RootViewController.m
- (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--");
}