Sync Android devices via GPS time?

by

You can get the time difference in milliseconds from currentTimeMillis() and Location.getTime() in the onLocationChanged() callback. Use requestSingleUpdate()

I just want to add that, if the user has a data connection they can use NTP time, which is even more accurate, as the GPS internal clock might drift and correcting it takes a while.

EDIT:
I want to edit this answer. After working as a GNSS developer in Android OS I realized that many ‘major’ Android OEMs have messed this up.
Usually NMEA sentences are generated at the chipset or GNSS stack. Sometimes the time is right, it depends on the implementation.

Also there is a problem of leap second. GPS time is not UTC time. And as of this writing it is 18 seconds ahead.

Also GPS time fromLocation objects are now system time as per the documentation

TLDR : use NTP time

More Related Contents:

  1. Can GPS location be acquired in a phone without internet and SIM?
  2. How do I get the current GPS location programmatically in Android?
  3. How to emulate GPS location in the Android Emulator?
  4. How to get current time and date in Android
  5. How to format date and time in Android?
  6. How to mock location on device?
  7. LocationClient getLastLocation() return null
  8. Get GPS location via a service in Android
  9. Get current location of user in Android without using GPS or internet
  10. Is it possible to create turn-by-turn GPS navigation app on Android/iOS using Google Maps?
  11. Getting Latitude and longitude in 30 seconds
  12. Location service GPS Force closed
  13. NDK Resolution Outcome: Project settings: Gradle model version=5.4.1, NDK version is UNKNOWN error
  14. How to sync SQLite database on Android phone with MySQL database on server?
  15. LocationListener of NETWORK_PROVIDER is enabled but , onLocationChanged is never called
  16. Android – Get time of chronometer widget
  17. Android device GPS on/off programmatically
  18. why getSpeed() always return 0 on android
  19. getLastKnownLocation() returns null [closed]
  20. Android LocationManager.getLastKnownLocation() returns null
  21. Android java.util.concurrent.TimeUnit Convert Milliseconds to Minutes
  22. Detecting GPS on/off switch in Android phones
  23. ACCESS_COARSE_LOCATION permission gives a cell tower precision on Android
  24. Time difference between two times
  25. Determining the speed of a vehicle using GPS in android
  26. How to save GPS coordinates in exif data on Android?
  27. How can I get continuous location updates in Android like in Google Maps?
  28. How can I get the date & time from the network provider?
  29. How to convert time to ” time ago ” in android
  30. Set Toast Appear Length

Leave a Comment