显示UIPickerView文本字段被选中，然后在选中后隐藏

我正在尝试创build一个文本框，当它被选中时，一个UIPickerView打开，并从中进行select。 一旦选定，UIPickerView隐藏，选定的项目显示在文本框中。 我尝试了不同的代码，我在网上find，但我不能得到它的工作。 如果有人可以为此提出一个完整的代码，或者告诉我在代码中我做了什么错误，那就太棒了。 非常感谢。

这是我的代码：

@IBOutlet var textfieldBizCat: UITextField! @IBOutlet var pickerBizCat: UIPickerView! = UIPickerView() var bizCat = ["Cat One", "Cat Two", "Cat Three"] override func viewDidLoad() { super.viewDidLoad() var bizCatCount = bizCat.count self.textfieldBizCat.inputView = pickerView } // returns the number of 'columns' to display. func numberOfComponentsInPickerView(pickerView: UIPickerView!) -> Int{ return 1 } // returns the # of rows in each component.. func pickerView(pickerView: UIPickerView!, numberOfRowsInComponent component: Int) -> Int{ return bizCat.count } func pickerView(pickerView: UIPickerView!, titleForRow row: Int, forComponent component: Int) -> String! { return bizCat[row] } func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int) { textfieldBizCat.text = "\(bizCat[row])" } 

Answer 1

如果我明白你的问题，你想要：

1. 有一个显示选中文本的UITextField
2. 当用户点击UITextField时打开一个select器
3. select一个项目（在选取器中）时closures选取器，并将其设置在UITextField中

这是完整的代码来pipe理它，你只需要链接你的UITextField的委托：

 @IBOutlet var textfieldBizCat: UITextField! @IBOutlet var pickerBizCat: UIPickerView! = UIPickerView() var bizCat = ["Cat One", "Cat Two", "Cat Three"] override func viewDidLoad() { super.viewDidLoad() pickerBizCat.hidden = true; textfieldBizCat.text = bizCat[0] } // returns the number of 'columns' to display. func numberOfComponentsInPickerView(pickerView: UIPickerView!) -> Int{ return 1 } // returns the # of rows in each component.. func pickerView(pickerView: UIPickerView!, numberOfRowsInComponent component: Int) -> Int{ return bizCat.count } func pickerView(pickerView: UIPickerView!, titleForRow row: Int, forComponent component: Int) -> String! { return bizCat[row] } func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int) { textfieldBizCat.text = bizCat[row] pickerBizCat.hidden = true; } func textFieldShouldBeginEditing(textField: UITextField) -> Bool { pickerBizCat.hidden = false return false } 

我从你的代码中改变了什么：

• 使用UITextFieldDelegate在selectUITextFieldDelegate时显示选取器
• select一个项目后隐藏select器，然后设置UITextField
• select任何项目时，将UITextField中的选取器的第一行设置

Answer 2

  // pressing the button again would hide the uipickerview. when pressed the first time, update the button's label to "done" , "hide" or whatever suits u! @IBAction func propertyTypeButtonPressed(sender: UIButton)/* the name of your button's action*/ { count++; //declare it first ViewContainigPickerView.hidden = false self.view.endEditing(true) if (count == 2) { ViewContainingPickerView.hidden = true /* if you placed your picker on a separate view for simplicity*/ count = 0; } } 

Answer 3

如何在你resSeFirstResponder的didSelectRow方法？

 func pickerView(pickerView: UIPickerView!, didSelectRow row: Int, inComponent component: Int) { textfieldBizCat.text = bizCat[row] pickerBizCat.resignFirstResponder() }