You may receive connection timeout or connection refused when you try to load your website from android or you are trying to access some service hosted on your local web server, so you can try this steps:
1. Check if in your manifest you have INTERNET permissions
2. Check if you accessing your website try the web site http://YOUR_LOCAL_COMPUTER_IP_ADD/YOUR_SITE not http://localhost/yoursite because if you are using localhost you actually trying to access your phone loop-back interface
3. if you are using xamp an you recieve this error Access to the requested object is only available from the local network phpmyadmin then open your http.conf file vim /opt/lampp/etc/extra/httpd-xampp.conf and comment ”Deny from all” or comment “Require local“ depending of your version and Don’t forget to restart your XAMPP Server
4. if you are using Windows and still receiving error timeout or connection refused then your windows firewall is playing with you, for start you can turn your firewall to off, also try to open your web site with mobile browser if your mobile browser cant access your site then there are big chances that your firewall is blocking your request to your web page, and you can try to fix like described here: http://www.mobitechie.com/android-2/how-to-access-localhost-on-android-over-wifi/ in my case firewall was the problem.