swift - 无法调用选择器和手势委托(delegate) iOS 13.2

Question

我的代码可以在 iOS 12 最新版本中运行，但在 iOS 13 之后，此代码无法调用选择器我在 iOS 13 中使用了 UIGestureRecognizerDelegate

这是我的代码

let panGest = UIPanGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
panGest.delegate = self
txtVw.addGestureRecognizer(panGest)

这是我的 let txtVw = subVws as! UITextView , txtVw = subVws as! UITextView

我使用了这段代码:

let panGest = UIPanGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
            self.view.addGestureRecognizer(panGest)

它可以工作，但我有一个 subview ，而 subview 不起作用并调用!!

不是调用 self.handleTap 或 gestureRecognizer(_:shouldRecognizeSimultaneouslyWith:)

Answer 1

这是你想要的吗？

class ViewController: UIViewController, UIGestureRecognizerDelegate {

    @IBOutlet weak var textView: UITextView!

    override func viewDidLoad() {
        super.viewDidLoad()
        let gestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePan))
        gestureRecognizer.delegate = self
        textView.addGestureRecognizer(gestureRecognizer)
        textView.isUserInteractionEnabled = true
        textView.isMultipleTouchEnabled = true
    }

    @objc func handlePan(_ gestureRecognizer: UIPanGestureRecognizer) {
        if gestureRecognizer.state == .began || gestureRecognizer.state == .changed {

            let translation = gestureRecognizer.translation(in: self.view)
            //make sure the view is not nil
            gestureRecognizer.view!.center = CGPoint(x: gestureRecognizer.view!.center.x + translation.x, y: gestureRecognizer.view!.center.y + translation.y)
            gestureRecognizer.setTranslation(CGPoint.zero, in: self.view)
        }

    }

}