Simple Android app for testing

I need a simple one screen Android app to send the GPS location information to a web service. This app is only for sending the location data for testing and doesn't need to be developed for production. These are the requirements. 1) A UI control to turn GPS sending ON and OFF. 2) A UI control to select 1 of 4 usernames. This username will be sent with the location. 3) Send latitude, longitude, and username as a JS object to a web service about every 10 seconds. 4) This needs to run in the background so user can use other apps while GPS data is being sent. 4) This needs to be completed by 2/21/2014. If you can't complete it by then please don't bid. The reply from the webservice doesn't need to processed. No error handling needs to be written. You can log errors on phone.