我想要实现一个简单的应用程序,但我遇到了一些麻烦。我添加了textField和PickerView。当我在textField上选中时,会出现PickerView。但标准键盘也出现了(我不想要它)。当我再次在textField上选项卡时,PickerView不会出现。我怎么能收到这个问题?非常感谢!
这是我的代码:
import UIKit
class ViewController: UIViewController, UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate {
@IBOutlet weak var pickerView1: UIPickerView!
@IBOutlet weak var textField1: UITextField!
var age = ["8", "18", "28", "38", "48"]
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return age.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if pickerView == pickerView1 {
}
return age[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == pickerView1 {
self.textField1.text = self.age[row]
self.pickerView1.isHidden = true
}
}
func textFieldDidBeginEditing(_ textField: UITextField) {
if textField == self.textField1 {
self.pickerView1.isHidden = false
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
答案 0 :(得分:3)
为什么你不尝试这种简单的方法,只需将你的pickerview添加为textfield的输入视图
textField1.inputView = pickerView1
由于您的UIPickerView没有返回按钮,因此我不会直接关闭视图,这就是为什么我建议使用inputAccessoryView属性来显示带有完成按钮的工具栏
let myToolbar = UIToolbar(frame: CGRect(x: CGFloat(0), y: CGFloat(0), width: CGFloat(320), height: CGFloat(44)))
//should code with variables to support view resizing
let doneButton = UIBarButtonItem(barButtonSystemItem: .done, target: self, action: #selector(self.inputAccessoryViewDidFinish))
//using default text field delegate method here, here you could call
//myTextField.resignFirstResponder to dismiss the views
myToolbar.setItems([doneButton], animated: false)
lblcurrentText.inputAccessoryView = myToolbar
并将该函数调用为
func inputAccessoryViewDidFinish() {
lblcurrentText.resignFirstResponder()
}
同时在您的选择器视图中选择后隐藏文本字段,如
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if pickerView == pickerView1 {
self.textField1.text = self.age[row]
self.inputAccessoryViewDidFinish()
}
}
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