的Andr​​oid的WebView getFavicon（）返回null [英] Android WebView getFavicon() returning null

问题描述

我试图用后得到加载页面的图标

I'm trying to get the favicon of the loaded page after using

    WebView webView = new WebView(getActivity());
    webView.loadUrl("http://" + url);

我附加异步 WebViewClient 到的WebView 来获得图标加载后

    webView.setWebViewClient(new WebViewClient()
    {
        @Override
        public void onPageFinished(WebView view, String url)
        {
            String linkTitle = view.getTitle();
            Bitmap favicon = view.getFavicon();

            onLinkUrlFinished(url, linkTitle);
        }
    });

该图标找回总是空，即使是网站，如谷歌/ Facebook的有网站图示是肯定的。

The favicon getting back is always null, even for websites such as google/facebook that has favicons for sure.

另一个线程说，使用 WebIconDatabase ，但它去precated：
<一href=\"http://stackoverflow.com/questions/3462582/display-the-android-webviews-favicon/5346347#5346347\">Display在Android的WebView图标

Another thread says to use WebIconDatabase but it's deprecated: Display the Android WebView's favicon

在Android网站上的API是指 WebViewClient.onReceivedIcon 甚至犯规存在。的http://developer.android.com/reference/android/webkit/WebView.html#getFavicon%28%29

The API on android site refers to WebViewClient.onReceivedIcon which doesnt even exist.http://developer.android.com/reference/android/webkit/WebView.html#getFavicon%28%29

这是怎么回事？

推荐答案

所以在最后我最终没有使用德precated API，而不是我发现，如果你把 /favicon.ico 域后，它会给你的 ICO 文件，我到底用来获取图像。这个URI API将有一个和getHost（）方法，它会给你的主机，而不必手动解析它

So in the end I didn't end up using the deprecated API, instead I found out that if you put /favicon.ico after the domain, it'll give you the ico file, which I used in the end to fetch the image. The Uri API will have a getHost() method that will give you the host without having to manually parse it

 String faviconUrl = Uri.parse(url).getHost() + "/favicon.ico";

有关谷歌为例图标URL将被www.google.com/favicon.ico

For google for example the icon url will be www.google.com/favicon.ico

这篇关于的Andr​​oid的WebView getFavicon（）返回null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！