UITapGestureRecognizer for UIPIckerView

Question

UITapGestureRecognizer和UIPickerView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

我通过添加重写getureRecognizer来解决问题

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

Answer 2

看上去不错，会不会还有另一个手势识别器在吞咽水龙头？您需要确保您的对象位于视图堆栈的顶部，以确保它被触发。此外，您还设置了委托，是否调用委托方法？或者他们也不开枪？如果他们不这样做，那就意味着你的轻触手势没有被触摸(另一个手势正在触摸)，如果它确实被解雇了，它就意味着这个动作有问题(但我怀疑是这样的)。