Can't figure out how to build a GPS locator application

Does anyone know if there's a tutorial on how to track another phones location using GPS

A GPS receiver tells your Android where it is; it does not tell the World, however if an Android user's settings (Location permissions) are set to allow Google to find you, it can provide location information to other apps or the Web.  But Googlet does not generally use gps, it uses WIFI and or cell tower information.   You do not have access to that with Ai2.

Combine the LocationSensor tutorial with the Where is My Car tutorial and the sms tutorial, build the app.   Put the app on your phone and have someone else put it on their phones and when all the phones are turned on and running the app  the phones can tell each other where they are if you share phone numbers.    Is there a way to do this directly or without the other phone users knowing?   Of course not with Ai2 and if you did, you would be creating malware.

Barry... Please do NOT multiple post up here for the same issue.  We'll get to your question as fast as we can.

I just want to create an app that me and friends can use to located each other during a hike, or while tracking down a friend who's had too much to drink and has wondered off from the pub. Hopefully I'll be able to combine the three tutorials and get the app to work. Thank you for pointing me in the right direction Steve :).