WKWebView:window.innerWidth报告错误值

我在WKWebView中托管了一些第三方内容,它们的内容在方向更改时无法正确调整大小。不过,在Safari中它的大小确实正确。

window.onresize = function() { console.log(window.innerWidth) }

相同的 每次宽度(768),不考虑方向,但当我评估 window.innerWidth 旋转完成后,在控制台上打印正确的宽度。

这是已知的问题吗?有什么解决办法吗?

我最后做的是重新发射 resize 延迟后的事件。它很难看,但它解决了我的用例。

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
    super.viewWillTransition(to: size, with: coordinator)

    coordinator.animate(alongsideTransition: nil) { _ in
        // Orientation change triggers the `resize` event, but `window.innerWidth` is
        // wrong *during that time*. By calling resize a second time, we let content resize itself
        // according to the correct dimensions.             
        // There's more! Sometimes the dimensions are still wrong after the rotation has completed,
        // so we have to wait. The minimum reliable delay varies widely across devices.
        DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(750)) {
            self.webView?.evaluateJavaScript("window.dispatchEvent(new Event('resize'));", completionHandler: nil)
        }
    }
}