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我正在尝试添加一个UITapGestureUIButton,以便在点击时触发一个函数.我正在使用Swift 3并且收到一些错误:

由于未捕获的异常'NSInvalidArgumentException'终止应用程序,原因:' - [SwiftRunner.ViewController tapBlurButton]:无法识别的选择器发送到实例0x149e07610'

这大致是我所拥有的:

// Swift 3
import UIKit
class ViewController {

   @IBOutlet weak var qsBlurButton: UIButton!       

   override func viewDidLoad() {
      super.viewDidLoad()

      let tapGesture = UITapGestureRecognizer(target: self, action: Selector(("tapBlurButton")))
      qsBlurButton.addGestureRecognizer(tapGesture)
   }

   func tapBlurButton(sender: UITapGestureRecognizer) {
      print("Please Help!")
   }
}