Android WebView Session Handling

[Giddyguy]

I'm building an android app with a webview component and am currently implementing how PDFs get opened in the webview. The site I am accessing is our university's course dashboard (where we can access hw, grades, announcements, etc) which requires a login to access the content. In my webview, if i attempt to download and open a PDF posted by an instructor, it redirects the link to the login page even though I am already logged in. However the pdf downloads/opens when accessing the site the Chrome app. Here is my code for downloading:

myView.setDownloadListener(new DownloadListener() {
            public void onDownloadStart(String url, String userAgent,
                                        String contentDisposition, String mimetype,
                                        long contentLength) {
                DownloadManager.Request request = new DownloadManager.Request( Uri.parse(url));
                request.allowScanningByMediaScanner();
                request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
                request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "temp_file.pdf");
                DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
                dm.enqueue(request);
            }
        });

Is there something I'm missing dealing with cookies/session handling? I'm rather new to android.

Alternatively the same login page is presented if i attempt to load the PDF through the Google Docs Viewer.

 

Thanks in advance.