已经有一周了,我一直困扰于这个问题,在其中我使用自定义的WKWebView
与UIViewRepresentable。
struct Webview : UIViewRepresentable {
var webview: WKWebView?
init() {
self.webview = WKWebView()
}
class Coordinator: NSObject, WKNavigationDelegate {
var parent: Webview
init(_ parent: Webview) {
self.parent = parent
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Loading finished -- Delegate")
webView.evaluateJavaScript("document.documentElement.scrollHeight", completionHandler: { (height, error) in
print(height)
webView.bounds.size.height = height as! CGFloat
})
}
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
func makeUIView(context: Context) -> WKWebView {
return webview!
}
func updateUIView(_ uiView: WKWebView, context: Context) {
uiView.navigationDelegate = context.coordinator
let htmlStart = "<HTML><HEAD><meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0, shrink-to-fit=no\"></HEAD><BODY>"
let htmlEnd = "</BODY></HTML>"
let dummy_html = """
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec ut venenatis risus. Fusce eget orci quis odio lobortis hendrerit. Vivamus in sollicitudin arcu. Integer nisi eros, hendrerit eget mollis et, fringilla et libero. Duis tempor interdum velit. Curabitur</p>
<p>ullamcorper, nulla nec elementum sagittis, diam odio tempus erat, at egestas nibh dui nec purus. Suspendisse at risus nibh. Mauris lacinia rutrum sapien non faucibus. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec interdum enim et augue suscipit, vitae mollis enim maximus.</p>
<p>Fusce et convallis ligula. Ut rutrum ipsum laoreet turpis sodales, nec gravida nisi molestie. Ut convallis aliquet metus, sit amet vestibulum risus dictum mattis. Sed nec leo vel mauris pharetra ornare quis non lorem. Aliquam sed justo</p>
"""
let htmlString = "\(htmlStart)\(dummy_html)\(htmlEnd)"
uiView.loadHTMLString(htmlString, baseURL: nil)
}
}
它的呈现方式如下
这里的问题是webview缺少高度。
除非我添加硬编码的frame
值,否则它不会出现在我的视图中,其中我的内容被截断。
Webview()
.frame(height:300)
我几乎遇到了类似的问题,但是那些解决方案并没有帮助到我 :/
`func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) { self.parent.dynamicHeight = webView.scrollView.contentSize.height }`
- Alex Scanlan