How to save text field value in uicollectionviewcell - swift

Question

hi i have text field in uicollectionviewcell
so what i need it example :
when i edit text filed value in row 5 and i done it and go to text filed in row 20 to edit value the collectionview has reloaded and forget value in row 5,
so i need way to save value temporarily while do I change it manually
this my code :
cell.foodNumber.tag = indexPath.row
if let foodcodes = self.menu![indexPath.row]["code"] as? NSString {
if contains(self.indexPathsForSelectedCells, indexPath) {
cell.currentSelectionState = true
cell.foodNumber.enabled = true
cell.foodNumber.text = "1"
println("foods:\(foodcodes) Count:\(cell.foodNumber.text)")
println(cell.foodNumber.tag)
} else {
cell.foodNumber.enabled = false
cell.foodNumber.text = nil
}
}

Answer 1

Implement in your ViewController the UITextFieldDelegate protocol, specifically the textField:didEndEditing method.
Save your indexPath.row in the textField.tag as you're doing, and set the delegate to the controller, where you can save the value.
This is a very simplistic example:
class MyViewController : UITableViewController {
var texts = [Int:String]()
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell: UITableViewCell = tableView.dequeueReusableCellWithIdentifier( "Cell" ) as! UITableViewCell
cell.textField.delegate = self
cell.textField.tag = indexPath.row
// restore saved text, if any
if let previousText = texts[indexPath.row] {
cell.textField.text = previousText
}
else {
cell.textField.text = ""
}
// rest of cell initialization
return cell
}
}
extension MyViewController : UITextFieldDelegate {
func textFieldDidEndEditing(textField: UITextField) {
// save the text in the map using the stored row in the tag field
texts[textField.tag] = textField.text
}
}