可以通过 opener 属性链接两个 WKWebViews 吗? [英] Can two WKWebViews be linked via the opener property?

问题描述

我正在从另一个打开 WKWebView，并希望两者能够通过 JavaScript 相互通信.

I'm opening a WKWebView from another, and would like the two to be able to communicate with each other via JavaScript.

以下代码打开两个 Web 视图 - 我可以使用 Safari 调试器检查它们.但是第二个 Web 视图的 opener 属性是 null.

The following code opens two Web views - I can inspect them with the Safari debugger. But the opener property of the second Web view is null.

class MyVC: UIViewController {
    override func viewDidLoad() {
        ...
        // "webView" is the first web view. Open a second one...
        webView = WKWebView()
        webView.uiDelegate = self
        webView.evaluateJavaScript("window.open('about:blank');")
    }
}


extension MyVC : WKUIDelegate {
    func webView(... createWebViewWith ...) -> WKWebView? {
        let newWebView = WKWebView(frame: webView.bounds,
                                   configuration: configuration)
        newWebView.load(navigationAction.request)

        let vc = UIViewController()
        vc.view.addSubview(newWebView)
        navigationController?.pushViewController(vc, animated: true)

        return nil
    }

}

有没有办法设置 opener 属性?

Is there a way to set the opener property?

推荐答案

window.opener 为 null，因为我从 createWebViewWith 方法返回 nil.我将其更改为返回新的 Web 视图，并将新窗口的 opener 属性设置为父"Web 视图.

The window.opener was null because I was returning nil from the createWebViewWith method. I changed it to return the new web view, and that sets the new window's opener property to "parent" web view.

func webView(... createWebViewWith ...) -> WKWebView? {
    let newWebView = WKWebView(frame: webView.bounds,
    ...
    return newWebView
}

这篇关于可以通过 opener 属性链接两个 WKWebViews 吗?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！