ios 内存管理

用导航控制器时，如果返回的时候蹦，那就是因为dealloc里面重复释放了。

PersonCenterViewController *personCenterVC = [[PersonCenterViewController alloc]initWithNibName:@"PersonCenterViewController" bundle:nil];
    [self.navigationController pushViewController:personCenterVC animated:YES];
    [personCenterVC release];

//创建自己的scrollview.
    myScrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 180)];
    self.myScrollView.backgroundColor = [UIColor whiteColor];
    self.myScrollView.contentSize=CGSizeMake(320, 200);
    UIImageView *shopImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 180)];
    shopImageView.image = [UIImage imageNamed:@"shopImageDemo.png"];
    [self.myScrollView addSubview:shopImageView];
    [self.view addSubview:self.myScrollView];
    self.myScrollView.scrollEnabled = NO;
    [myScrollView release];
    [shopImageView release];
   
    //创建自己的tableview.
    myTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, 180, 320, 300) style:UITableViewStyleGrouped];
    self.dataArray=[NSMutableArray arrayWithObjects:@"店铺简介",@"经典发型",@"地图位置",@"热线电话：010-66228989", nil];
    self.myTableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
    self.myTableView.separatorColor = [UIColor grayColor];
    self.myTableView.dataSource=self;
    self.myTableView.delegate=self;
    self.myTableView.backgroundView = nil;
    self.myTableView.scrollEnabled = NO;
    self.myTableView.backgroundColor = [UIColor grayColor];
    [self.view addSubview:self.myTableView];
    [myTableView release];

 //section里面的内容。
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
    UILabel *shopNameLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 3, 100, 30)];
    shopNameLabel.backgroundColor = [UIColor clearColor];
    shopNameLabel.text = @"金融街店";
    shopNameLabel.textColor = [UIColor whiteColor];
    
    UILabel *shopAddressLabel = [[UILabel alloc]initWithFrame:CGRectMake(10, 35, 300, 20)];
    shopAddressLabel.backgroundColor = [UIColor clearColor];
    shopAddressLabel.text = @"北京市西城区金融大街甲26号顺成饭店首层";
    [shopAddressLabel setFont:[UIFont fontWithName:@"Arial" size:13]];
    shopAddressLabel.textColor = [UIColor whiteColor];
    
    UIView *sectionView=[[[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.bounds.size.width, 70)]autorelease];
    [sectionView setBackgroundColor:[UIColor grayColor]];
    [sectionView addSubview:shopNameLabel];
    [sectionView addSubview:shopAddressLabel];
    [shopNameLabel release];
    [shopAddressLabel release];
//    [sectionView release];//这里不能直接release了，只能autorelease就行了。
    return sectionView;
}