如何在UIPickerView中剪辑这些角(在屏幕截图上)

Question

是！我试着用"；剪辑到边界"；bun-in不起作用，我现在也不知道为什么。注意侧面的灰色区域在此处输入图像描述

Answer 1

试试这个。。

import UIKit
class ViewController: UIViewController, UIPickerViewDataSource, UIPickerViewDelegate {
@IBOutlet weak var txtPicker: UITextField!

var testPickerView : UIPickerView!
var testArr = ["One","Two","Three","Four","Five"]

override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)

testPickerView = UIPickerView()
testPickerView.dataSource = self
testPickerView.delegate = self
testPickerView.backgroundColor = .green
testPickerView.layer.cornerRadius = 30.0
testPickerView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
testPickerView.clipsToBounds = true
txtPicker.inputAccessoryView = testPickerView
}
// MARK: pickerView

func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return testArr.count
}
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
txtPicker.resignFirstResponder()
return testArr[row]
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
txtPicker.text = testArr[row]
}
}