我试图通过在整个javascript中注入一个新的CSS规则来排除一些网页元素,如侧边栏,我在xcode中创建了一个新的javascript文件,其中包含一个新的样式标记,以隐藏我在Google Chrome开发人员工具中检查过的边栏并结束使用此代码:
var styleTag = document.createElement("style");
styleTag.textContent = '.sidebar {display:none;}';
document.documentElement.appendChild(styleTag);
并创建了WKWebViewConfiguration对象,该对象包含一些属性,这些属性允许在本地代码和托管Web内容之间创建桥梁,如here所述,但仍然无法运行此脚本。
这是我完整的ViewController代码:
import UIKit
import WebKit
class scrapedBrowser: UIViewController, WKNavigationDelegate {
var webView: WKWebView!
var progressView: UIProgressView!
override func loadView() {
webView = WKWebView()
webView.navigationDelegate = self
view = webView
}
required init?(coder aDecoder: NSCoder) {
let config = WKWebViewConfiguration()
let scriptURL = Bundle.main.path(forResource: "hideSections", ofType: "js")
let scriptContent:String?
do {
scriptContent = try String(contentsOfFile: scriptURL!, encoding: String.Encoding.utf8)
}
catch _ {
scriptContent = nil
}
let script = WKUserScript(source: scriptContent!, injectionTime: .atDocumentStart, forMainFrameOnly: true)
config.userContentController.addUserScript(script)
super.init(coder: aDecoder)
self.webView?.navigationDelegate = self
}
override func viewDidLoad() {
super.viewDidLoad()
let url = URL(string: "http://yourwebsite.com/")!
let request = URLRequest(url: url)
webView.load(request)
webView.allowsBackForwardNavigationGestures = true
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
title = webView.title
}
}
答案 0 :(得分:0)
您需要将config
分配给WKWebView
。
webView = WKWebView(frame: CGRect.zero, configuration: config)
答案 1 :(得分:0)
您已在init中创建了配置并添加了脚本,但您尚未保留对配置的引用。稍后在loadView上创建wkwebview而不是之前在init
中创建的配置