如何在更改视图期间使UITextField不可编辑？

Question

I created a custom cell and declare text field and make it non-editable

class SuppliersCutomTableViewCell: UITableViewCell {

    /*Input*/

    @IBOutlet weak var compNameField:UITextField!
    @IBOutlet weak var companyTypeField: UITextField!
    @IBOutlet weak var emailField: UITextField!
    @IBOutlet weak var numberField: UITextField!
    @IBOutlet weak var addressField: UITextField!

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
        compNameField.userInteractionEnabled = true
        compNameField.enabled = false

         func edit() {
        compNameField.userInteractionEnabled = true
        compNameField.enabled=true
        print("edit")

    }
}

When I come to the another class, I am trying to make it editable here.

class SuppliersViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {

    func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]?
    {
let edit = UITableViewRowAction(style: UITableViewRowActionStyle.Normal, title: "Edit"){(UITableViewRowAction,NSIndexPath) -> Void in

            if indexPath.row == 0{

                SuppliersCutomTableViewCell().edit()
            }       
     }    
}

When I am calling my method SuppliersCutomTableViewCell().edit() it's showing the error:

fatal error: unexpectedly found nil while unwrapping an Optional value

Can anyone show some sample code for this?

Answer 1

It seems that you have not initialised some of your optionals.So while unwrapping , you are getting nil . Try to check if you have initialised your optionals or not before using them.