ios - datePicker 未显示在所需位置

Question

我已经创建了自定义日期选择器 View ，并在其中添加了 UIdatePicker 和两个按钮。两个按钮都位于所需的正确位置，但日期选择器未显示在正确的位置

图像中的红色区域是日期选择器

这是我的日期选择器代码:

   @objc func datePicker(){

    //DatepickerView
    self.datePickerView.frame = CGRect(x: 5, y: Int(SCREEN_HEIGHT-280), width: Int(SCREEN_WIDTH-10), height: 276)
    self.datePickerView.backgroundColor = UIColor.white
    self.datePickerView.layer.cornerRadius = 8.0
    self.datePickerView.layer.masksToBounds = true
    self.datePickerView.layer.borderWidth = 2;
    self.datePickerView.layer.borderColor = UIColor.black.cgColor;

    doneBtn.addTarget(self, action: #selector(doneClicked), for: .touchUpInside)
    doneBtn.setTitle("Done", for: .normal)
    doneBtn.frame = CGRect(x: 20, y: 10, width: 80, height: 50)
    doneBtn.setTitleColor(UIColor.white, for: .normal)
    doneBtn.backgroundColor = UIColor.black        
   doneBtn.titleLabel?.font = UIFont(name: "Montserrat-Regular", size: 
   16.0)
    doneBtn.layer.cornerRadius = 16.0
    doneBtn.layer.masksToBounds = true
    doneBtn.layer.borderColor = UIColor.clear.cgColor
    doneBtn.layer.borderWidth = 1

    cancelBtn.addTarget(self, action:#selector(cancelClicked), for: .touchUpInside)
    cancelBtn.setTitle("Cancel",for: .normal)
    cancelBtn.frame = CGRect(x: SCREEN_WIDTH-110, y: 10, width: 80, height: 50)
    cancelBtn.setTitleColor(UIColor.white, for: .normal)
    cancelBtn.backgroundColor = UIColor.black
    cancelBtn.titleLabel?.font = UIFont(name: "Montserrat-Regular", size: 16.0)
    cancelBtn.layer.cornerRadius = 16.0
    cancelBtn.layer.masksToBounds = true
    cancelBtn.layer.borderColor = UIColor.clear.cgColor
    cancelBtn.layer.borderWidth = 1

    // DatePicker    
    self.datePicker = UIDatePicker(frame:CGRect(x: 0, y: 0, width: Int(SCREEN_WIDTH-20), height: 200))
    self.datePicker?.backgroundColor = UIColor.red
    self.datePicker?.datePickerMode = UIDatePickerMode.date
    self.datePicker?.layer.masksToBounds = true
    datePicker.center = view.center

        datePickerView.addSubview(datePicker)
        datePickerView.addSubview(doneBtn)
        datePickerView.addSubview(cancelBtn)

        self.view.addSubview(datePickerView)
        datePickerView.isHidden = true;
}

我在 stackoverflow 中尝试了 10 多个答案，但对我不起作用。

知道为什么它没有出现在正确的位置

Answer 1

这是我遇到的 iOS 14 问题，我的 datePicker 只能从屏幕底部窥视。我找到了答案here来自 PetterBraka:

if #available(iOS 14, *) {
    datePicker.preferredDatePickerStyle = .wheels
    datePicker.sizeToFit()
}
yourTextField.inputView = datePicker