Android :: Android WebView Remember Username And Password

I am making a basic WebView app that will load a web page. This web page requires log in information. When I navigate out or refresh the page it logs me out. How do I stay logged in? The following code is my attempt based on some research but apparently I am not understanding the concept. And so I can kill two bird with one stone, can someone let me know how to prevent a refresh of the page when you rotate your phone? is this possible?
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

mWebView = (WebView) findViewById(R.id.webview);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl("www.randomurl.com");
mWebView.setWebViewClient(new HelloWebViewClient());
CookieSyncManager.createInstance(this);
CookieSyncManager.getInstance().startSync();
CookieManager.getInstance();