UITapGestureRecognizer 不適用於 UIView 動畫

Question

當我在動畫播放時點擊 UIImage 時，我試圖調用一個動作。 我見過類似的問題，但我無法將這些解決方案應用於我的案例。 請幫忙。

Xcode 9.2 快速 4

import UIKit

class MyCalssViewController: UIViewController {

    @IBOutlet weak var myImageView: UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // action by tap
        let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
        myImageView.addGestureRecognizer(gestureSwift2AndHigher)

    }

    // action by tap
    @objc func actionUITapGestureRecognizer (){

        print("actionUITapGestureRecognizer - works!") // !!! THIS DOES NOT WORK !!!

    }

    // hide UIImage before appear
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        myImageView.center.y += view.bounds.height

    }

    // show UIImage after appear with animation
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        UIView.animate(withDuration: 10, animations: {
            self.myImageView.center.y -= self.view.bounds.height
        })
    }
}

Answer 1

您只是錯過了一行，從而啟用了視圖上的用戶交互。

override func viewDidLoad() {
    super.viewDidLoad()

    // action by tap
    let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
    myImageView.isUserInteractionEnabled = true
    myImageView.addGestureRecognizer(gestureSwift2AndHigher)

}

Answer 2

  let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.clickedImageView(_:)))
  myImageview.isUserInteractionEnabled = true
  myImageview.addGestureRecognizer(tapGesture)

// MARK: - Gesture Recognizer action

    func clickedImageView(_ sender: UITapGestureRecognizer) {
       // Write your action here.
    }

Answer 3

您需要像這樣傳入選項.allowUserInteraction ：

UIView.animate(withDuration: 10, delay: 0, options: .allowUserInteraction, animations: {
    ...
})