I view and use a GPS DEMO PROYECT from
www.b4x.com
but, in a house (no street), the app return several satellites, but no lat and lon
why?
i view others app, that return the position in same site (my office/house).
like this:
play.google.com
GPS / GNSS tutorial
The GNSS library replaces the old GPS library. The GNSS library is available here: https://www.b4x.com/android/forum/threads/gnss-library-an-updated-gps-library.109110/#content Using it is quite simple: 1. Checking whether location services are available. If not take the user to the...

but, in a house (no street), the app return several satellites, but no lat and lon
why?
i view others app, that return the position in same site (my office/house).
like this:
GPS Data - Apps on Google Play
Check GPS coordinates, altitude, speed, location and all other GPS data.