ios - 选中单元格时如何更改单元格的高度？

Question

我四处寻找其他答案，但似乎没有任何效果。我已经实现了这段代码:

var selectedCellIndexPath: NSIndexPath?
let selectedCellHeight: CGFloat = 88.0
let unselectedCellHeight: CGFloat = 51.0

// Override to support editing of individual itemCells

override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {

    if selectedCellHeight == indexPath {
        return selectedCellHeight
    }
    return unselectedCellHeight
}


override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    if selectedCellIndexPath != nil && selectedCellIndexPath == indexPath {
        self.selectedCellIndexPath = nil
    } else {
        self.selectedCellIndexPath = indexPath
    }

    tableView.beginUpdates()
    tableView.endUpdates()

    if selectedCellIndexPath != nil {
        // THis ensure, that the cell is full visile once expended 
        tableView.scrollToRowAtIndexPath(indexPath, atScrollPosition: .None, animated: true)
    }
}

我从其他 StackOverFlow 答案中得到它，但是当我运行我的应用程序时，单元格仅显示它已被选中(通过着色)，然后不执行任何其他操作。任何帮助都会很棒!我是初学者!

Answer 1

if selectedCellHeight == indexPath {

应该是

if selectedCellIndexPath == indexPath {