Access remote pdf file with login (authentication)

I am facing problem with `loading URL` in `web-view`. `Web-view` shows blank because it is not logged in. How to access `course file` without login into moodle2.6 by using `url`. **Using this url format** http://example.com/pluginfile.php/4418/mod_resource/content/10/xx-t2.pdf **Here is my web-view code** webView.setWebViewClient(new WebViewClient(){ @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { //progDailog.show(); view.loadUrl(url); return true; } @Override public void onPageFinished(WebView view, final String url) { //progDailog.dismiss(); } }); webView.loadUrl("http://example.com/pluginfile.php/4418/mod_resource/content/10/xx-t2.pdf");