Question

我在Table视图中使用自定义按钮，它对我有用：

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

     UIImage *detailsButtonImage;
     UIButton *detailsButton;

     NSString *CellIdentifier = @"Cell";

     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
     if (cell == nil) {
            cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
     }

     //populate cells with array elements
     cell.textLabel.text = [itemsArray objectAtIndex:indexPath.row];

     //a custom button
     detailsButton = [UIButton buttonWithType:UIButtonTypeCustom];
     detailsButtonImage = [UIImage imageNamed:@"details.png"];
     [detailsButton setBackgroundImage:detailsButtonImage forState:UIControlStateNormal];
     detailsButton.frame = CGRectMake(275, 10, 20, 22);

      //which cell was tapped?
     [detailsButton setTag:[itemsArray objectAtIndex:indexPath.row]];
     [detailsButton addTarget:self action:@selector(showDetails:) forControlEvents:UIControlEventTouchUpInside];
     [cell.contentView addSubview:detailsButton];
      return cell;
 }

//showing details of selected item
- (void) showDetails:(id)sender
{  
    AnotherViewController *anotherViewController = [[AnotherViewController alloc] init];
    anotherViewController.title = [sender tag];
    anotherViewController.itemDescription = [itemsDescriptions objectAtIndex:[itemsArray indexOfObjectIdenticalTo:[sender tag]]]; 

    [self.navigationController pushViewController:anotherViewController animated:YES];
    [anotherViewController release];
}

我很好奇是否有另一种方法可以将细胞标识符发送到AnotherViewController，除了设置标记。

Answer 1

看起来你想让showDetails知道哪个按钮推了它。我认为你这样做的方式很好，但如果你想要的话可以有一个功能

（void）showDetails：（id）sender withObject：（id）object;

并使用您的按钮调用它而不仅仅是showDetails：（id）sender;我推断你的对象是你正在做的字符串，所以它可能是

（void）showDetails：（id）sender withString：（NSString *）string;

但老实说，你现在这样做的方式很好，为什么要改变呢？

iPhone SDK：TableView中的自定义按钮

1 个答案: