Apply an IBAction only to a single cell - swift

Question

I have a tableView with prototypes cell; with this func I set cell height
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
return cellHeight
}
with this action I change cell height touching up inside the UIButton
#IBAction func changeCellHeight(sender: UIButton)
{
if cellHeight == 44
{
cellHeight = 88
} else {
cellHeight = 44
}
tableView.beginUpdates()
tableView.endUpdates()
}
Now I need to change height only for selected cell (not for every cells); so I define
var index: NSIndexPath! and I implement this func
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
index = self.tableView.indexPathForSelectedRow()!
println("Cella " + "\(index)")
}
As I expected in console Xcode prints the selected cell (<NSIndexPath: 0xc000000000000016> {length = 2, path = 0 - 0} ).
So my trouble is how to use var index in the IBAction.
Thanks in advance.

Answer 1

To change your height based on selection, you don't need an IBAction if you are already implementing the didSelectRowAtIndexPath method.
Just make a little change in your didSelectRowAtIndexPath method first-
func tableView(tableView: UITableView!, didSelectRowAtIndexPath indexPath: NSIndexPath!) {
// You don't need to do this -> index=self.tableView.indexPathForSelectedRow()!
index = indexPath;
println("Cella " + "\(index)")
tableView.beginUpdates()
tableView.endUpdates()
}
And then a little change to your heightForRowAtIndexPath method-
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
if index == indexPath {
return 88
}
else{
return 44
}
}