android - android 设备上的错误显示 favicon.ico

Question

我从某些网站加载 favicon.ico 时遇到问题。例如http://deti.fm/favicon.ico。在甲板计算机上它加载良好，但在 android 设备上它加载有缺陷像素。这是截图 https://www.dropbox.com/s/2wt73pwk2jnj86b/favicon.jpg

这是代码

Bitmap bitmap = null;
URL imageUrl = new URL(url);
HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
conn.setConnectTimeout(30000);
conn.setReadTimeout(30000);
conn.setInstanceFollowRedirects(true);
InputStream is = conn.getInputStream();
OutputStream os = new FileOutputStream(f);
    bitmap = BitmapFactory.decodeStream(is);
is.close();
conn.disconnect();
os.close();
return bitmap;