在我的选择器视图中，数组数据未加载？

Question

在这个我尝试加载选择器视图与数据，但无法加载数据，它显示如下图所示，只有空的选择器视图显示我试图从很长一段时间任何人可以帮助我什么是错误的实施？

var firstName : String = "" 
    var lastName : String = "" 
    var mobileNumber : Int = 0 
    var email : String = "" 
    var defaultValue = 1 
    let url = "http://www.json-generator.com/api/json/get/bPmyumGWeW?indent=2" 
    var dateofbirth : String = "" 
    var Gender : String = "" 
    var genderArray = [String]() 

     override func viewDidLoad() { 
     super.viewDidLoad() 
     let picker = UIPickerView() 
     picker.isHidden = true 
     picker.delegate = self 
     DateofBirthTextfield.delegate = self 
     selectGenderTextField.inputView = picker 
     MyaccountJsonWithURL() 
     genderArray = ["Male","Female"] 

    } 

    func MyaccountJsonWithURL() { 
     let url = NSURL(string: self.url) 
     URLSession.shared.dataTask(with: (url as URL?)!, completionHandler: {(data, response, error) -> Void in 
      if let jsonObj = try? JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? NSDictionary { 
       // print(jsonObj!.value(forKey: "Detail")) 
       if let profileArray = jsonObj!.value(forKey: "profile") as? NSArray { 
        for array in profileArray { 
         if let profileDict = array as? NSDictionary { 
          if let firstName = profileDict.value(forKey: "first name"){ 
           self.firstName.append(firstName as! String) 
          } 
          if let lastName = profileDict.value(forKey: "last name"){ 
           self.lastName.append(lastName as! String) 
          } 
          self.mobileNumber = profileDict.value(forKey: "mobile") as! Int 
          print(self.mobileNumber) 
          if let emailId = profileDict.value(forKey: "email"){ 
           self.email.append(emailId as! String) 
          } 
          self.dateofbirth = profileDict.value(forKey: "dob") as! String 
          if let gender = profileDict.value(forKey: "gender"){ 
           self.Gender.append(gender as! String) 
          } 
         } 
        } 
       } 
       OperationQueue.main.addOperation({ 
        self.FirstNameTextfield.text = self.firstName 
        self.LastNameTextfield.text = self.lastName 
        self.MobileNumberTextfield.text = String(describing: self.mobileNumber) 
        self.EmailIdTextfield.text = self.email 
        self.DateofBirthTextfield.text = String(describing: self.dateofbirth) 
        self.selectGenderTextField.text = self.Gender 
       }) 
      } 
     }).resume() 
    } 

func numberOfComponents(in pickerView: UIPickerView) -> Int { 
     return 1 
    } 

    func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int { 
     return genderArray.count 
    } 

    func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? { 
     return genderArray[row] 
    } 

    func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) { 
     selectGenderTextField.text = genderArray[row] 
     self.view.endEditing(false) 
    } 

Answer 1

在viewDidLoad设置选择器为hidden。设置picker.isHidden = false以显示它

Answer 2

型&更换picker.hidden =真

picker.hidden = false