Change UITableViewCell's height after tableview is shown - swift

Question

I have a tableview, and each tableviewcell has a button.
I want to change current cell height when cell's button clicked.
How can I do this? Thank you!

Answer 1

Create an array that holds your selected cells index's
var selectedCellIndexs : NSMutableArray = []
In didSelectRowAtIndexPath indexPath: NSIndexPath) function add:
self.selectedCellIndexs.addObject(indexPath)
tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
Now in the tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath), all you need to do is check if the cell is part of the selected array and if it is return a different value.
if (self.selectedCellIndexs.containsObject(indexPath)) {
return selectedHeight
}
return notSelectedHeight
Remember to that if you want to deselect a cell you will need to remove the index path from your selectedCellIndexs when the cell is clicked.
NOTE: This is the basic work flow for when the user selects the cell to change the height. A bit more work is needed to get the cell from the button action.

Answer 2

You should store all tableviewcell's height in an NSMutableArray.
When user clicks on tableviewcell's button, update height in NSMutableArray.
After that reload your UITableView.
Hope this helps.

Answer 3

Globally declare a mutableArray.
var buttonPressedIndexPaths : NSMutableArray = []
in cellForRowAtIndexPath() method
cell?.button.tag = indexPath.row
cell?.button.addTarget(self, action: "onButtonAction:", forControlEvents: UIControlEvents.TouchUpInside)
copy paste these methods
override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat
{
if(buttonPressedIndexPaths.containsObject(indexPath))
{
return 90;//button pressed cell height
}
else
{
return 44;//normal
}
}
func onButtonAction(sender:UIButton)
{
var indexPath : NSIndexPath = NSIndexPath(forRow: sender.tag, inSection: 0)//section may differ based on ur requirement
if(buttonPressedIndexPaths.containsObject(indexPath))
{
buttonPressedIndexPaths.removeObject(indexPath)
}
else
{
buttonPressedIndexPaths.addObject(indexPath)
}
tableView.reloadData();
}