Question

我试图在一个部分中获得前五张牌，在表格视图的下一部分中获得其他五张牌。实际上我已经完成了解析并且无法获得正确的单元格值。我得到的是组合值，例如：section = birthday单元格值card1，card2再次card1，card 2 new year section ，在其他部分，同样的事情正在重复。我应该怎么做才能分组，card1，生日区卡2和card1，card2应该在新年部分。这是我的代码：

 (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 2;
    NSLog(@"section in rv");
}

 (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
        return [appDelegate.books count];
        NSLog(@".....appDelegate.books count");
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"cell for index path");
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
      {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
              }
    Book *aBook = [appDelegate.books objectAtIndex:indexPath.row];
    NSLog(@"text for cell...");
    cell.text = aBook.Subcatname;
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    return cell;
    [appDelegate release];
  }

Answer 1

查看dks1725的响应，以设置每个部分的正确行数。

此外，更直接地回答您的问题，在每个表格行的tableView:cellForRowAtIndexPath:中，您始终返回具有相同内容的单元格，无论该单元格位于哪个部分。这就是您获得每个部分中出现相同的内容（'card1'，'card2'等）。

请注意，您在此方法中收到的indexPath有两个组成部分：indexPath.row和indexPath.section。您忽略了其中的第二个，因此，对于每个部分，您总是为每一行返回相同的单元格。

您需要修改tableView:cellForRowAtIndexPath:，以使其中的一部分看起来如下所示：

if (indexPath.section == 0) {
    //Retrieve the content you want for each row in section 0
    //It will look something like this, but will be different depending on where you stored your content

    Book *aBook = [appDelegate.books objectAtIndex:indexPath.row];
    cell.text = birthdayBook.Subcatname;
}
if (indexPath.section == 1) {
    //Retrieve the content you want for each row in section 1
    //It will look something like this, but will be different depending on where you stored your content

    Book *aBook = [appDelegate.books objectAtIndex:indexPath.row + 5];
    cell.text = newyearsBook.Subcatname;
}
...

根据您的意见编辑以上内容鉴于您的模型，您也可以用更少的行来完成，如下所示：

   - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 2;}
-(NSString *)tableView:(UITableView *)tblView titleForHeaderInSection:(NSInteger)section {
    NSString *sectionName = nil;
    switch(section)
    {
        case 0:
            sectionName = [NSString stringWithString:@"birthday"];
            break;
        case 1:
            sectionName = [NSString stringWithString:@"new year"];
    }
    return sectionName;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
   {
       NSInteger count; 
       if(section == 0) 
       { count=5; } 
       else if(section == 1)
       { count=5; }
       return count;
   }

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    NSLog(@"cell for index path");
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil)
      {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
         }
    NSLog(@"text for cell...");
    if(indexPath.section == 0)
    {       
      Book *aBook = [appDelegate.books objectAtIndex:indexPath.row];
        cell.text = aBook.Subcatname;
           }
    else if(indexPath.section == 1)
    {
      Book *aBook = [appDelegate.books objectAtIndex:indexPath.row+5*indexPath.section];
       cell.text = aBook.Subcatname;
        }
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    return cell;
    [appDelegate release]; 

      }


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    // Navigation logic -- create and push a new view controller

    if(bdvController == nil)
        bdvController = [[BookDetailViewController alloc] initWithNibName:@"BookDetailView" bundle:[NSBundle mainBundle]];
    NSLog(@"pushing to bdv controller");
    if(indexPath.section == 0)
    {       
        Book *aBook = [appDelegate.books objectAtIndex:indexPath.row];
        bdvController.aBook = aBook;
    }
    else if(indexPath.section == 1)
    {
        Book *aBook = [appDelegate.books objectAtIndex:indexPath.row+5*indexPath.section];
    bdvController.aBook = aBook;
    }
        NSLog(@"push to view descrip, id, pic url");
    //bdvController.aBook = aBook;
    NSLog(@"loop");
    [self.navigationController pushViewController:bdvController animated:YES];
}

Answer 2

您必须为每个部分设置行数，如下所示。

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{
    if(indexPath.section==0)
       //return no of rows for section 0
    else
      //return no of rows for section 1
}

接收其他部分的单元格值的部分

2 个答案: