How to get WKWebview content size in swift?

Question

i have a problem get the WKWebview real content size, any ideas?

How to determine the content size of a WKWebView? the answer above do NOT work for me, any ideas? Thanks!

Answer 1

The code below worked for me, but this maybe go wrong once WKWebview's view tree changes. post your best answer, thanks!

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
    DispatchQueue.main.asyncAfter(deadline: .now() + 0.2) {
        if let scroll_cls = NSClassFromString("WKChildScrollView"),
           let compose_cls = NSClassFromString("WKCompositingView") {
            let viewss = webView.allSubViewsOf(cls: scroll_cls)
            if let first = viewss.first?.subviews.first,
               first.isKind(of: compose_cls) {
                if webView.bounds.height >= first.bounds.height {
                    // webivew is at bottom
                }
            }
        }
        
    }
}


extension UIView {
    func allSubViewsOf(cls: AnyClass) -> [UIView] {
        var all = [UIView]()
        func getSubview(view: UIView) {
            if view.isKind(of: cls) {
                all.append(view)
            }
            guard view.subviews.count > 0 else { return }
            view.subviews.forEach{ getSubview(view: $0) }
        }
        getSubview(view: self)
        return all
    }
}