用於UIPIckerView的UITapGestureRecognizer

Question

UITapGestureRecognizer與UIPickerView不起作用。爲什麼？

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

我加入覆蓋getureRecognizer

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

Answer 2

看起來不錯，是否有另一個手勢識別器吞下水龍頭？您需要確保您的對象位於視圖堆棧的頂部以確保它被觸發。你還設置了委託，委託方法是否被調用？或者他們也不會開火嗎？如果他們不這樣做，那麼這意味着你的輕擊手勢沒有被觸摸（另一個手勢正在觸摸），如果它被觸發，這意味着該動作有問題（但我懷疑是這種情況）。