swift - 用于 UIPIckerView 的 UITapGestureRecognizer

Question

带有 UIPickerView 的 UITapGestureRecognizer 不工作。为什么？

class someVC: UIViewController, UITapGestureRecognizerDelegate

override func viewDidLoad() {
   let tap = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
   self.pickerView.addGestureRecognizer(tap)
   tap.delegate = self
}

func dismissKeyboard() {
   textField.resignFirstResponder()
}

Answer 1

我通过添加覆盖 getureRecognizer 解决了问题

func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {
    return true
}