ios tableview分组

//
//  ViewController.m
//  UISCrollerviewTest
//
//  Created by ganchaobo on 13-8-10.
//  Copyright (c) 2013年 ganchaobo. All rights reserved.
//

#import "ViewController.h"
#import "MyCell.h"

//rolad...方法 不管怎样都回调用数据源两个方法（1;numberOfSectionsInTableView
//2 (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
//根据制定刷新 ，来刷新cell。
@interface ViewController (){
    UITableView *_tableview;
}
@property(nonatomic,retain)NSMutableArray *data;//数据源
@property(nonatomic,retain)NSMutableDictionary *exp;//是否展开
@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    self.data=[NSMutableArray array];
    for (int i=0; i<3; i++) {
        NSString *str=[NSString stringWithFormat:@"it-%zi",i];
        [self.data addObject:str];
    }
    self.exp=[NSMutableDictionary dictionary];
    
    
    // Do any additional setup after loading the view, typically from a nib.
    UITableView *tableview=[[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStyleGrouped];
    tableview.separatorStyle=UITableViewCellSeparatorStyleNone;
    UIView *vv=[[UIView alloc] init];
    vv.backgroundColor=[UIColor whiteColor];
    tableview.backgroundView=vv;
    tableview.dataSource=self;
    tableview.delegate=self;
    [self.view addSubview:tableview];
    _tableview=tableview;
    [tableview release];
}

#pragma mark -数据源方法
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView{
    NSLog(@"numberOfSectionsInTableView");
    return 5;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    NSLog(@"--section---%zi",section);
    NSString *indexsection=[NSString stringWithFormat:@"%zi",section];
    BOOL b=[[self.exp objectForKey:indexsection] boolValue];
    if ([self.exp objectForKey:indexsection] && b) {
        return self.data.count;
    }
    return 0;
}
-(void)click:(UIButton *)btn{
    NSString *indexSection=[NSString stringWithFormat:@"%zi",btn.tag];
    if ([self.exp objectForKey:indexSection]) {//如果有这个section
    
        BOOL b=[[self.exp objectForKey:indexSection] boolValue];
       [self.exp removeAllObjects];
        if(b){
            [ self.exp setObject:[NSNumber numberWithBool:NO] forKey:indexSection];
        }
        else {
           [ self.exp setObject:[NSNumber numberWithBool:YES] forKey:indexSection]; 
        }
        
    }
    else{
   [self.exp removeAllObjects];
    [self.exp setObject:[NSNumber numberWithBool:YES] forKey:indexSection];
    }
//    NSIndexSet *indexset=[NSIndexSet indexSetWithIndex:btn.tag];

//    [_tableview reloadSections:indexset withRowAnimation:UITableViewRowAnimationFade];
  [_tableview reloadData];
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSLog(@"--->section-->%zi---row-->%zi",indexPath.section,indexPath.row);
    static NSString *cellIdentify=@"cell";
    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:cellIdentify];
    if (cell==nil) {
        cell=[[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentify] autorelease];
        
    }
    cell.textLabel.text=@"first button";

    return cell;
}
#pragma mark -代理方法
//头部
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{


    UIButton *btn=[UIButton buttonWithType:UIButtonTypeRoundedRect];
    [btn setTitle:@"SS" forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
    //btn.frame=CGRectMake(0, 0, 320, 80);
    btn.tag=section;
    return btn;
}
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{
    NSLog(@"heightForHeaderInSection-->%zi",section);
    return 80;
}



-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    NSLog(@"heightForRowAtIndexPath--->seciont-%zi--row---%zi",indexPath.section,indexPath.row);
    return 80;
}

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    NSLog(@"__%@",indexPath);
}



@end