當我使用PickerView和textField時隱藏鍵盤

Question

我想實現一個簡單的應用程序，但我遇到了一些麻煩。 我添加了textField和PickerView。 當我在textField上選中時，會出現PickerView。 但標准鍵盤也出現了（我不想要它）。 當我再次在textField上選項卡時，PickerView不會出現。 我怎么能收到這個問題？ 非常感謝！

這是我的代碼：

    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.
    }
}

Answer 1

為什么你不嘗試簡單的方法，只需添加你的pickerview作為你的文本域的輸入視圖

 textField1.inputView = pickerView1

由於您的UIPickerView沒有返回按鈕，因此我不會直接關閉視圖，這就是為什么我建議使用inputAccessoryView屬性來顯示帶有完成按鈕的工具欄

  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

並將該函數調用為

    func inputAccessoryViewDidFinish() {
    lblcurrentText.resignFirstResponder()
}

同時在你的pickerview上選擇后隱藏文本字段就好了

 func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    if pickerView == pickerView1 {
        self.textField1.text = self.age[row]
        self.inputAccessoryViewDidFinish()
    }
}

教程

例如，你可以在這里獲得一步一步的教程