swift - 点击手势不起作用。启用用户交互。

Question

具有以下 View 结构:

以编程方式将点击手势记录添加到 Temp lbl:

    let tempLblTap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(MainFeedVC.convertDegrees))
    tempLblTap.delegate = self
    tempLblTap.numberOfTapsRequired = 1
    tempLblTap.numberOfTouchesRequired = 1
    tempLblTap.cancelsTouchesInView = false
    self.tempLbl.isUserInteractionEnabled = true
    self.tempLbl.addGestureRecognizer(tempLblTap)

但是 convertDegrees 方法没有被触发。

还有 2 个滑动手势识别器被添加到同一个 View 中:

let leftSwipeGestureRecognizer: UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(MainFeedVC.showPostPicVC))
    leftSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirection.left
    self.view.addGestureRecognizer(leftSwipeGestureRecognizer)

    let rightSwipeGestureRecognizer: UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(MainFeedVC.showUserVC))
    rightSwipeGestureRecognizer.direction = UISwipeGestureRecognizerDirection.right
    self.view.addGestureRecognizer(rightSwipeGestureRecognizer)

也许是他们的原因？

Answer 1

找到解决方案:

包含我的 lbl 的 View 在 Storyboard中未选中其 userInteractionEnabled。因此，在将手势识别器添加到标签、图像或简单地添加按钮时，请始终检查所有父 View 是否将其 userInteractionEnabled 设置为 true。