MacOS中的WkWebView在本地或远程内容上保持空白

Question

I'm trying to build a MacOS app that can load websites and extract data from them using webviews, but I can't get webviews to load at all, either with remote content or with local content. 我正在尝试构建一个可以加载网站并使用webview从中提取数据的MacOS应用程序，但我无法使用远程内容或本地内容来加载webview。

I'm trying to use a very small webview embedded into the main view. 我正在尝试使用嵌入主视图的非常小的webview。 (Ultimately, I don't actually want this to be displayed, or I want it to be as small as possible---I just want the rendered content to extract data.) Like this: （最终，我实际上并不想要显示它，或者我希望它尽可能小 - 我只是想让渲染的内容提取数据。）像这样：

However, neither loading from a remote url nor loading from a local test html string works. 但是，既不从远程URL加载也不从本地测试html字符串加载。 When I click either the load-from-remote-url button or the load-from-local-test-string button, the print statement I put in there to make sure the function gets called is printed, but there's no change at all to the webview: it just remains a blank white box. 当我单击load-from-remote-url按钮或load-from-local-test-string按钮时，我在那里放置了print语句以确保函数被调用，但是根本没有变化webview：它只是一个空白的白框。 It also doesn't throw any kind of error. 它也不会抛出任何错误。

Here's the failing code: 这是失败的代码：

webViewTools.swift: webViewTools.swift：

import Foundation
import WebKit

extension WKWebView {
    func load(_ urlString: String) {
        guard let url = URL(string: urlString) else {
            print("can't make url")
            return
        }
        let request = URLRequest(url: url)
        load(request)
    }
}

let testHtml =  "<html><body><h1>Hello World</h1></body></html>"

extension WKWebView {
    func test(){
        loadHTMLString(testHtml, baseURL: nil)
        }
}

ViewController.swift: ViewController.swift：

import Cocoa
import WebKit

class ViewController: NSViewController {

    @IBOutlet var webView: WKWebView!

    @IBAction func loadButtonPressed(_ sender: Any) {
        webView.load("https://www.apple.com/")
        print("trying to load from remote")
    }

    @IBAction func linkButtonPressed(_ sender: Any) {
        webView.test()
        print("trying to load local string")
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }


}

Note: the sandbox is not enabled, and I've added "Allow Arbitrary Loads" to the "App Transport Security Settings" entry in info.plist, so this prior SO does not resolve the problem. 注意：沙箱未启用，我已将“允许任意负载”添加到info.plist中的“App Transport Security Settings”条目，因此此先前的SO无法解决问题。

How do I convince the WKWebView to actually, you know, display something? 我怎么说服WKWebView实际上，你知道，显示一些东西？ (MacOS 10.14.5, Swift 5, XCode 10.2.1) （MacOS 10.14.5，Swift 5，XCode 10.2.1）

Answer 1

Aaaah, I discovered the problem: apparently even if you don't turn the sandbox on, WKWebView totally fails without it. Aaaah，我发现了这个问题：显然即使你没有打开沙盒，WKWebView也会在没有它的情况下完全失败。 Not only that, but it fails silently. 不仅如此，它还是默默地失败了。 When I turned the sandbox on, and then enabled outgoing connections, everything started working right away. 当我打开沙箱，然后启用传出连接时，一切都立即开始工作。

MacOS中的WkWebView在本地或远程内容上保持空白

问题描述

1 个解决方案

解决方案1
0 2019-06-06 21:07:56

MacOS中的WkWebView在本地或远程内容上保持空白

问题描述

1 个解决方案

解决方案1 0 2019-06-06 21:07:56

解决方案1
0 2019-06-06 21:07:56