title: Setting UITextField's inputView property to a UIPicker not working in Swift
body: <p>Hello I am trying to pop a <code>UIPickerView</code> view programmatically when user clicks on textfield. I have tried this but it doesn't doing anything, it isn't working. Nothing is happening when I click the textfield</p>
  <pre><code>class UserProfileTableViewController: UITableViewController,UITextFieldDelegate,UIPickerViewDelegate,UIPickerViewDataSource {
   var itemPicker: UIPickerView! = UIPickerView()
      
      @IBOutlet weak var genderTxtField: UITextField!
     
      
      var gender = [&quot;MALE&quot;,&quot;FEMALE&quot;]
      override func viewDidLoad() {
          super.viewDidLoad()
         
          genderTxtField.delegate = self
          
          itemPicker!.delegate = self
          itemPicker!.dataSource = self
          itemPicker!.backgroundColor = UIColor.blackColor()
      
          self.genderTxtField.inputView = itemPicker
      }
      
      func numberOfComponentsInPickerView(pickerView: UIPickerView) -&gt; Int{
          return 1
      }
      
      // returns the # of rows in each component..
      func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -&gt; Int{
          return gender.count
      }
      
      func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -&gt; String? {
          return gender[row]
      }
      
      func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int)
      {
          genderTxtField.text = gender[row]
          //.hidden = true;
      }
      
      func textFieldShouldBeginEditing(textField: UITextField) -&gt; Bool {
          itemPicker.hidden = false
          return false
      }
      
      override func didReceiveMemoryWarning() {
          super.didReceiveMemoryWarning()
          // Dispose of any resources that can be recreated.
      }
  
  }
  </code></pre>