How to expand the height of a Table View Cell in Swift?

Question

I have a TableViewController and want to change the height of one of my Static Cells when I press a Button. I created an Outlet of my Cell:

@IBOutlet var myCell: UITableViewCell!

The problem is, that I don't have a property height, so that I can so s.th. like this:

@IBAction func btnClick(sender: UIButton) {
    myCell.rowHeight = 200
}

I know that there is a method called:

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

But how can I trigger this method when I press my UIButton?

Answer 1

tableView.beginUpdates() followed by tableView.endUpdates() triggers the call of delegate methods like tableView:heightForRowAtIndexPath:

so you could do something like that:

var height = 100

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

@IBAction func btnClick(sender: UIButton) {
    tableView.beginUpdates()
    height = 200
    tableView.endUpdates()
}