Objective-C:下载后具有动态图像高度的自调整表格视图单元格大小

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CellIdentifier" forIndexPath:indexPath];
    
    // 下载图像并计算高度
    UIImage *image = [self downloadImageAtIndex:indexPath.row];
    CGFloat imageWidth = image.size.width;
    CGFloat imageHeight = image.size.height;
    CGFloat cellWidth = CGRectGetWidth(tableView.frame);
    CGFloat cellHeight = (imageHeight / imageWidth) * cellWidth;
    
    // 设置单元格内容
    cell.imageView.image = image;
    
    return cell;
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    // 下载图像并计算高度
    UIImage *image = [self downloadImageAtIndex:indexPath.row];
    CGFloat imageWidth = image.size.width;
    CGFloat imageHeight = image.size.height;
    CGFloat cellWidth = CGRectGetWidth(tableView.frame);
    CGFloat cellHeight = (imageHeight / imageWidth) * cellWidth;
    
    return cellHeight;
}