TableView分组Group写法

需要多实现方法
首先需要在xib的视图文件中修改TableView的style中选择Grouped。

然后实现2个方法
1. numberOfSectionsInTableView，分多少个组。
2. titleForHeaderInSection 每个组的title

具体代码如下
省略Property List文件test.plist

//
//  ViewController.h
//  TableView1
//
//  Created by Rayln Guan on 9/22/13.
//  Copyright (c) 2013 Rayln Guan. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController<UITableViewDelegate, UITableViewDataSource>

@property(nonatomic,retain) NSDictionary *dic;
@property(nonatomic,retain) NSArray *arr;

@end

//
//  ViewController.m
//  TableView1
//
//  Created by Rayln Guan on 9/22/13.
//  Copyright (c) 2013 Rayln Guan. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"plist"];
    self.dic = [[NSDictionary alloc] initWithContentsOfFile:path];
    self.arr = [self.dic allKeys];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
    
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    NSLog(@"section:%i", section);
    
    return [self.dic count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    //UITableViewCell *cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
    //一种提升性能的做法
    //[indexPath section]获取section
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if(cell == nil){
        cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"cell"];
    }
    NSString *key = [self.arr objectAtIndex:[indexPath row]];
    [[cell textLabel] setText:[self.dic objectForKey:key]];
    //detail
    [[cell detailTextLabel] setText:@"detail"];
    //设置cell样式， 比如这个，在右侧增加一个箭头
    [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
    //[cell setAccessoryType:UITableViewCellAccessoryDetailDisclosureButton];
    
    //设置一个图片
    NSString *path = [[NSBundle mainBundle] pathForResource:@"Default" ofType:@"png"];
    UIImage *img = [[UIImage alloc]initWithContentsOfFile:path];
    [[cell imageView]setImage:img];
    return cell;
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return 2;
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{
    if(section == 0){
        return @"title1";
    }else{
        return @"title2";
    }
}

- (void)dealloc
{
    NSLog(@"destory!!");
    [_dic release];
    [_arr release];
    [super dealloc];
}
@end