在Uicontextmenu预览提供商中接受TAPS

Question

tl; dr：如何在uicontextmenucontentpreviewprovider查看控制器中接受按钮上的龙头上的龙头？

我正在为uicontextmenu介绍一个自定义预览控制器，通过uicontextmenucontentpreviewprovider在我的uicontextmenuconfiguration initializer中设置。该视图按按钮按预期显示，但是点击它只是将预览丢弃，而没有按钮捕获的触摸。这是预览API的固有限制，还是我缺少启用交互的东西？

这是代码创建预览的一个粗略示例：

return UIContextMenuConfiguration(
    identifier: messageId.value as NSString,
    previewProvider: nil,
    previewProvider: {
        let viewController = UIViewController()
        viewController.view.backgroundColor = .green
        
        let button = UIButton(type: .infoLight)
        button.addAction(UIAction(handler: { _ in
            print("Button")                
        }), for: .touchUpInside)
        
        button.sizeToFit()
        
        viewController.view.addSubview(button)
        button.center = viewController.view.center
        
        return viewController
    },
    actionProvider: {_ in
        return UIMenu(title: "", children: reactionOptions)
    }
)

Answer 1

您只能在整个预览视图上使用点击：

查看uicontextMenuInteractionDelegate

func contextMenuInteraction(
    _ interaction: UIContextMenuInteraction,
    willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration,
    animator: UIContextMenuInteractionCommitAnimating
) {
    animation.onCompletion {
        // your code
    }
}

或wkwebview使用wkuidelegate

func webView(
    _ webView: WKWebView,
    contextMenuForElement elementInfo: WKContextMenuElementInfo,
    willCommitWithAnimator animator: UIContextMenuInteractionCommitAnimating
) {
    animation.onCompletion {
        // your code
    }
}