我正在尝试创建按钮的pickerview，即每个组件都包含一个按钮。我希望能够像在标签上一样，将一个按钮添加到viewForRow委托方法中。当我这样做时，该按钮会正确显示，但无法单击。我究竟做错了什么？这是我的代码：
import UIKit
class ViewController: UIViewController,UIPickerViewDelegate,UIPickerViewDataSource {
var pickerData: [String] = [String]()
@IBOutlet weak var pickerView: UIPickerView!
func numberOfComponents(in pickerView: UIPickerView) -> Int {
return 1
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return pickerData.count
}
override func viewDidLoad() {
super.viewDidLoad()
self.pickerView.delegate = self
self.pickerView.dataSource = self
pickerData = ["א","ב","ג","ד","ה"]
// Do any additional setup after loading the view, typically from a nib.
}
func pickerView(_ pickerView: UIPickerView, rowHeightForComponent component: Int) -> CGFloat {
return 120
}
func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
let button:UIButton = UIButton(frame: CGRect(x: 100, y: 400, width: 100, height: 50))
button.backgroundColor = .black
button.setTitle(pickerData[row], for: .normal)
button.addTarget(self, action:#selector(self.buttonPressed), for: .touchUpInside)
self.pickerView.addSubview(button)
return button
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
print ("Selected \(pickerData[row])")
}
@objc func buttonPressed(sender:UIButton) {
print ("Button pressed!")
}
}