ios 如何在 UItableview 下创建带有 UItableview 的 Accordion？

How to create an Accordion with UItableview under a UItableview?

提问by Ashutosh

I am working on app which requires a Facebook/Gmail iphone app type menu which i already have with the help of DDMenuController. But now i have requirement where one of the rows needs to show accordion on click with another tableview with 5 rows (all should be clickable and able to push new viewcontrollers). I have seen couple of code sample but nothing seems to fit my requirement, so just trying to put it out here hoping someone has a better solution.

我正在开发需要 Facebook/Gmail iphone 应用程序类型菜单的应用程序，我已经在 DDMenuController 的帮助下拥有了该菜单。但是现在我有一个要求，其中一行需要在单击时显示手风琴，另一个表视图有 5 行（所有行都应该是可点击的并且能够推送新的视图控制器）。我看过几个代码示例，但似乎没有什么符合我的要求，所以只是想把它放在这里希望有人有更好的解决方案。

Thanks,

谢谢，

回答by anoop4real

One of my work had a requirement to have an accordion view but having multiple levels of expansion and collapse of cells like you open/ close your directory structure.

我的一项工作要求有一个手风琴视图，但有多个级别的单元格展开和折叠，就像打开/关闭目录结构一样。

I did a sample on that, I was able to achieve the desired result. The basic concept is the same, I am using the deleteRowsAtIndexPath and insertRowsAtIndex path only but by creating a model object which has a parent children relationship and loading the children into the main array whenever the parent is tapped. I am not good at putting a tutorial so I am sharing my sample code, hope it helps someone.

我做了一个样本，我能够达到预期的结果。基本概念是相同的，我只使用 deleteRowsAtIndexPath 和 insertRowsAtIndex 路径，但是通过创建一个具有父子关系的模型对象，并在父项被点击时将子项加载到主数组中。我不擅长放置教程，所以我分享了我的示例代码，希望对某人有所帮助。

Code here Accordion_git

此处代码Accordion_git

UpdatedDid a SWIFT version of this, not sure whether optimal but it works.

更新了这个的 SWIFT 版本，不确定是否最佳，但它有效。

Code here Accordion_SWIFT

此处代码Accordion_SWIFT

回答by Shamsudheen TK

Better solution is Expand or CollapseTableView Sections

更好的解决方案是展开或折叠TableView 部分

Good Tutorial is available here

好的教程可以在这里找到

You can download the sample code here

您可以在此处下载示例代码

Sample Code

示例代码

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";

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

    // Configure the cell...

    if ([self tableView:tableView canCollapseSection:indexPath.section])
    {
        if (!indexPath.row)
        {
            // first row
            cell.textLabel.text = @"Expandable"; // only top row showing

            if ([expandedSections containsIndex:indexPath.section])
            {
                cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeUp];
            }
            else
            {
                cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeDown];
            }
        }
        else
        {
            // all other rows
            cell.textLabel.text = @"Some Detail";
            cell.accessoryView = nil;
            cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
        }
    }
    else
    {
        cell.accessoryView = nil;
        cell.textLabel.text = @"Normal Cell";

    }

    return cell;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if ([self tableView:tableView canCollapseSection:indexPath.section])
    {
        if (!indexPath.row)
        {
            // only first row toggles exapand/collapse
            [tableView deselectRowAtIndexPath:indexPath animated:YES];

            NSInteger section = indexPath.section;
            BOOL currentlyExpanded = [expandedSections containsIndex:section];
            NSInteger rows;

            NSMutableArray *tmpArray = [NSMutableArray array];

            if (currentlyExpanded)
            {
                rows = [self tableView:tableView numberOfRowsInSection:section];
                [expandedSections removeIndex:section];

            }
            else
            {
                [expandedSections addIndex:section];
                rows = [self tableView:tableView numberOfRowsInSection:section];
            }

            for (int i=1; i<rows; i++)
            {
                NSIndexPath *tmpIndexPath = [NSIndexPath indexPathForRow:i 
                                                               inSection:section];
                [tmpArray addObject:tmpIndexPath];
            }

            UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

            if (currentlyExpanded)
            {
                [tableView deleteRowsAtIndexPaths:tmpArray 
                                 withRowAnimation:UITableViewRowAnimationTop];

                cell.accessoryView = [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeDown];

            }
            else
            {
                [tableView insertRowsAtIndexPaths:tmpArray 
                                 withRowAnimation:UITableViewRowAnimationTop];
                cell.accessoryView =  [DTCustomColoredAccessory accessoryWithColor:[UIColor grayColor] type:DTCustomColoredAccessoryTypeUp];

            }
        }
    }
}