cannot use instance member within property initializer DropDown library [duplicate] - ios

Question

This question already has answers here:
How to initialize properties that depend on each other
(4 answers)
Closed 5 years ago.
i have implemented assistolab dropdown in my project.but in some viewcontroller it could not work properly.it shows,
cannot use instance member within property initializer
my code snippet is given below
class MobileTopUpVC: UIViewController,UITextFieldDelegate {
let dropDown = DropDown() //error is here
#IBOutlet weak var mobileTopUpImag: UIImageView!
#IBOutlet weak var amountTxt: UITextField!
#IBOutlet weak var mobileNumberTxt: UITextField!
#IBOutlet weak var operatorTxt: UITextField!
#IBOutlet weak var countryTxt: UITextField!
#IBOutlet weak var DropDown: UIView!
#IBOutlet weak var backGroundView: UIView!
var textArray = [UITextField]()
var countryArray:[String] = colors.countryArray
var operatorArray:[String] = colors.opArray
#IBOutlet weak var proceedButton: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
backGroundView.layer.cornerRadius = backGroundView.frame.width/2
backGroundView.clipsToBounds = true
//countryArray = colors.countryArray
backGroundView.layer.borderWidth = 3
backGroundView.layer.borderColor = colors.second.cgColor
textArray = [countryTxt,operatorTxt,amountTxt,mobileNumberTxt]
let view1:UIView! = UIView()
view1.frame = CGRect(x: 0, y: 0, width: 0, height: 0)
countryTxt.inputView = view1
operatorTxt.inputView = view1
// countryTxt.layer.borderWidth = 1
// countryTxt.layer.borderColor = UIColor.green.cgColor
// countryTxt.borderStyle = UITextBorderStyle.bezel
borderStyle()
proceedButton.Cradius(size: 15.0)
mobileTopUpImag.image = mobileTopUpImag.image?.withRenderingMode(.alwaysTemplate)
mobileTopUpImag.tintColor = colors.second
countryDropDown()
}
the error is troubling me in this line
let dropDown = DropDown()
please help me to resolve this

Answer 1

Change your code to the following so your DropDown is initialised in the viewDidLoad
and also change your View name From "DropDown" to something else :D
class MobileTopUpVC: UIViewController,UITextFieldDelegate {
let dropDown: DropDown? //Changed**
#IBOutlet weak var mobileTopUpImag: UIImageView!
#IBOutlet weak var amountTxt: UITextField!
#IBOutlet weak var mobileNumberTxt: UITextField!
#IBOutlet weak var operatorTxt: UITextField!
#IBOutlet weak var countryTxt: UITextField!
#IBOutlet weak var dropDownView: UIView! // Change your VIEW NAME!!!
#IBOutlet weak var backGroundView: UIView!
var textArray = [UITextField]()
var countryArray:[String] = colors.countryArray
var operatorArray:[String] = colors.opArray
#IBOutlet weak var proceedButton: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
dropDown = DropDown()
backGroundView.layer.cornerRadius = backGroundView.frame.width/2
backGroundView.clipsToBounds = true
//countryArray = colors.countryArray
backGroundView.layer.borderWidth = 3
backGroundView.layer.borderColor = colors.second.cgColor
textArray = [countryTxt,operatorTxt,amountTxt,mobileNumberTxt]
let view1:UIView! = UIView()
view1.frame = CGRect(x: 0, y: 0, width: 0, height: 0)
countryTxt.inputView = view1
operatorTxt.inputView = view1
// countryTxt.layer.borderWidth = 1
// countryTxt.layer.borderColor = UIColor.green.cgColor
// countryTxt.borderStyle = UITextBorderStyle.bezel
borderStyle()
proceedButton.Cradius(size: 15.0)
mobileTopUpImag.image = mobileTopUpImag.image?.withRenderingMode(.alwaysTemplate)
mobileTopUpImag.tintColor = colors.second
countryDropDown()
}

Answer 2

You are using DropDown class as property name. Check below line in your code-
#IBOutlet weak var DropDown: UIView!
It should be something like this-
#IBOutlet weak var dropDownView: UIView!