Question

我正在尝试确定PDFView上触摸的位置。我已将我的pdf视图设置为用户交互，如下所示：

pdfView?.isUserInteractionEnabled = true

然后我使用以下函数来检测触摸：

 override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    if let touch = touches.first {
        let position = touch.location(in: pdfView)
        print(position)
    }
}

touchesBegan代码永远不会被解雇。

Answer 1

将手势识别器添加到PDFView，如下所示：

    let tapGesture = UITapGestureRecognizer(target: self, action: #selector(didTap(_:)))
    tapGesture.numberOfTapsRequired = 1

     if var recognizer = pdfView.gestureRecognizers {
        recognizer.append(tapGesture)
        pdfView.gestureRecognizers = recognizer
    }

touchesBegan不在PDFView中触发

1 个答案: