TextField returning Nil - ios

Question

I have custom UITextField in the UICollectionView, the textfield returns null always even if I pass some value from it , and the app crashes on the button click
Code:
func accountCollectionView(_ collectionView: UICollectionView?, cellForItemAt indexPath: IndexPath?) -> UICollectionViewCell?
{
let cell : RBLoginCell = collectionView!.dequeueReusableCell(withReuseIdentifier: "RBLoginCell", for: indexPath!) as! RBLoginCell
cell.backgroundColor = UIColor.clear
switch indexPath!.row {
case 0:
let txtFldUserId = cell.txtFld
txtFldUserId?.delegate = self
txtFldUserId?.placeholder = "Email Address"
txtFldUserId?.tag = 1
txtFldUserId?.keyboardType = .emailAddress
txtFldUserId?.returnKeyType = .next
txtFldUserId?.isSecureTextEntry = false
break
case 1:
let txtFldPassword = cell.txtFld
txtFldPassword?.delegate = self
txtFldPassword?.placeholder = "Password"
txtFldPassword?.tag = 2
txtFldPassword?.returnKeyType = .done
txtFldPassword?.isSecureTextEntry = true
break
default:
break
}
cell.setNeedsLayout()
return cell
}
on this method the app crashes while checking for the charcter count
func loginAction(sender:UIButton!)
{
if (txtFldUserId?.text?.characters.count)! > 0 {
if (txtFldPassword?.text?.characters.count)! > 0 {
user?.emailAddress = txtFldUserId?.text
user?.password = txtFldPassword?.text
postLoginRequest(user)
Custom cell class
class RBLoginCell : RBParentCell {
var txtFld : CustomTextField?
var separator : UIView?
override init(frame: CGRect) {
super.init(frame: frame)
txtFld = getTextField()
separator = getImageView()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func getLabel() -> UILabel? {
let _lblInfo = UILabel(frame: CGRect.zero)
_lblInfo.backgroundColor = UIColor.clear
_lblInfo.textAlignment = .left
_lblInfo.textColor = UIColor.white
_lblInfo.numberOfLines = 0
addSubview(_lblInfo)
return _lblInfo
}
func getTextField(_ frame: CGRect) -> CustomTextField? {
let textField = CustomTextField(frame: frame)
textField.borderStyle = .none
textField.placeholder = ""
textField.backgroundColor = UIColor.clear
textField.autocorrectionType = .no
// no auto correction support
textField.keyboardType = .default
// use the default type input method (entire keyboard)
textField.returnKeyType = .next
textField.enablesReturnKeyAutomatically = false
textField.clearButtonMode = .never
textField.text = ""
textField.contentVerticalAlignment = .center
textField.autocapitalizationType = .none
//textField.frame = CGRectMake(X, Y,Width,Height);
textField.alpha = 1.0
textField.isUserInteractionEnabled = true
let lblleft: UILabel? = getLabel()
lblleft?.frame = CGRect(x: 0, y: 20, width: self.frame.size.width, height: self.frame.size.height)
lblleft?.backgroundColor = UIColor.clear
lblleft?.text = "\n+91"
lblleft?.font = UIFont(name: Constants.HelveticaNeue, size: 14)//FONT_HelveticaNeue(14.0)
lblleft?.textColor = UIColor(hexString: "555555")
textField.leftView = lblleft
textField.leftViewMode = .never
addSubview(textField)
return textField
}
override func getImageView() -> UIImageView? {
let imageView = UIImageView(frame: CGRect.zero)
imageView.backgroundColor = UIColor.lightGray
addSubview(imageView)
return imageView
}
override func layoutSubviews() {
super.layoutSubviews()
txtFld?.frame = CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.height-1)
separator?.frame = CGRect(x: 0, y: (txtFld?.frame.size.height)!, width: frame.size.width, height: 1)
}

Answer 1

You have initialised
let txtFldUserId = cell.txtFld
and
let txtFldPassword = cell.txtFld
in your cellForItemAt method, how can you access it in loginAction method then?
If you have initialised txtFldUserId and txtFldPassword in your view controller, then remove let from the cellForItemAt method like
txtFldUserId = cell.txtFld
txtFldPassword = cell.txtFld
[I am assuming you have initialised in your viewController
var txtFldUserId: UITextField?
var txtFldPassword: UITextField?
because you are not getting compiler error in your loginAction method ]