#import "ViewController.h"#define Ksmall 40.0f#define Klarge 80.0f#define KNoOpen @"NoOpen"@interface ViewController (){    int flag;}@property(nonatomic,retain)NSMutableDictionary *mydata;@end@implementation ViewController- (void)viewDidLoad{    [super viewDidLoad];    self.mydata=[NSMutableDictionary dictionary];    UITableView *tableview=[[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStyleGrouped];    tableview.delegate=self;    tableview.dataSource=self;    [self.view addSubview:tableview];    [tableview release];    // Do any additional setup after loading the view, typically from a nib.}//section-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return 5;}//row-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return 2;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{        NSLog(@"section--》%zi----row--->%zi",indexPath.section,indexPath.row);    static NSString *cellindentify=@"mycell";    UITableViewCell *cell=[tableView dequeueReusableCellWithIdentifier:cellindentify];    if(cell==nil){        cell=[[[UITableViewCell alloc] init] autorelease];      }    cell.textLabel.text=@"bb";    return cell;}#pragma mark -自定义分组的头部-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section{    return 40;}-(UIView*)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{    NSLog(@"viewForHeaderInSection");    UIView *view=[[[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 40)] autorelease];    UILabel *lb=[[UILabel alloc] initWithFrame:CGRectMake(10, 0, 100-10, 40)];    lb.text=@"time";       lb.textAlignment=NSTextAlignmentLeft;    [view addSubview:lb];        UILabel *lb1=[[UILabel alloc] initWithFrame:CGRectMake(100, 0, self.view.bounds.size.width-100-10, view.bounds.size.height)];    lb1.textAlignment=NSTextAlignmentRight;    lb1.text=@"right";    [view addSubview:lb1];    return view;}#pragma mark -设置CELL的高度-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{   if(indexPath.row==0){        UITableViewCell *targetCell=[tableView cellForRowAtIndexPath:indexPath];       if(targetCell.frame.size.height==Ksmall+1){
   //折叠的情况           [self.mydata setObject:KNoOpen forKey:indexPath];       }        else{            [self.mydata removeObjectForKey:indexPath];        }     [tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];   }}-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{            if(indexPath.row==0){       NSString *isOpen= [self.mydata objectForKey:indexPath];        if ([isOpen isEqualToString:KNoOpen]) {            return Klarge;        }        return Ksmall;    }    else        return Klarge;}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}