(WKWebView) - 禁止长按交互

使用WKWebView展示html文章，loadFileURL加载html文件，加载本地缓存图片。长按图片会弹窗，长按文字弹窗，点击链接跳转。。。

• 1.禁止长按交互

let configuration = WKWebViewConfiguration()
configuration.preferences = WKPreferences()
configuration.preferences.minimumFontSize = 12
configuration.preferences.javaScriptEnabled = true
configuration.preferences.javaScriptCanOpenWindowsAutomatically = false

// "document.documentElement.style.webkitTouchCallout='none';" // 禁止长按
// "document.documentElement.style.webkitUserSelect='none';" // 禁止选择
let javascript = "document.documentElement.style.webkitTouchCallout='none';document.documentElement.style.webkitUserSelect='none';"
let noneSelectScript = WKUserScript(source: javascript, injectionTime: WKUserScriptInjectionTime.atDocumentEnd, forMainFrameOnly: true)

let v = WKWebView(frame: CGRect(x: 0, y: 0, width: kScreenWidth, height: contentHeight), configuration: configuration)
v.configuration.userContentController.addUserScript(noneSelectScript)

当然也可以这样

webView.evaluateJavaScript("document.documentElement.style.webkitTouchCallout='none';", completionHandler: nil)
webView.evaluateJavaScript("document.documentElement.style.webkitUserSelect='none';", completionHandler: nil)

还可以这样

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
     print("加载完成")

     // 禁止长按/选择
     webView.evaluateJavaScript("document.documentElement.style.webkitTouchCallout='none';", completionHandler: nil)
     webView.evaluateJavaScript("document.documentElement.style.webkitUserSelect='none';", completionHandler: nil)
}

• 2.禁止链接跳转

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
     DLog("navigationAction = %@, request = %@", navigationAction, navigationAction.request.url ?? "url = nil")

     // 禁止链接跳转
     if navigationAction.request.url?.scheme?.contains("http") == true {
        decisionHandler(WKNavigationActionPolicy.cancel)
     } else {
        decisionHandler(WKNavigationActionPolicy.allow)
     }
}