Make Android WebView not store cookies or passwords

Question

I use an Android WebView for Twitter OAuth: Twitter asks the user to log in and authorize the application, I retrieve the access token and persist it in my application.

Answer 1

For not saving passwords:

WebView webview = new WebView(this);
WebSettings mWebSettings = webview.getSettings();
mWebSettings.setSavePassword(false);
mWebSettings.setSaveFormData(false);

For cookies:

CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptCookie(false);

I am not very sure for the cookies implementation.