private void clearCachedAuthenticationData() { if (oauthView != null) { oauthView.clearCache(true); oauthView.clearFormData(); oauthView.clearHistory(); } // wipe out cookies. CookieSyncManager.createInstance(this); CookieManager cookieManager = CookieManager.getInstance(); cookieManager.removeAllCookie(); deleteDatabase("webview.db"); deleteDatabase("webviewCache.db"); File cacheDirectory = getCacheDir(); SdkUtils.deleteFolderRecursive(cacheDirectory); cacheDirectory.mkdir(); }