如何定期从GPS获取准确的位置

Question

In application I need to get geo position of phone every x minutes (for now it's 5min and 50m), in such a way that phone doesn't discharge during day. The accuracy of position must be at least 40m. By now I have listeners for gps and network. The problem lies in the fact that the data I can receive sometimes is totally wrong (depends on phone) - new position can be even 200m from my real position and with 40m accuracy; next point can be the same but in opposite direction. For my app it's fatally. So the question is next: Is there any way to get more accuracy data but not very often?

Update 1: to show the problem in action:

(The phone is lying in the fixed position)

Answer 1

To get more accurate location make sure you're using the ACCESS_FINE_LOCATION permission in your manifest. To prevent higher battery usage, you can use setInterval and setFastestInterval on your LocationRequest object. Longer intervals mean less battery usage by your app.

Answer 2

You should not be accessing the gps and network directly, you should be using LocationManager and using ACCURACY_FINE in your Criteria . This will help conserve battery life, and avoid issues with phones where the gps may have been disabled. There's more detail on that here .

As far as the accuracy of your location, you can use Location 's getAccuracy method to get Android's estimate of how accurate a measurement is. If it doesn't fit your criteria, discard it and poll again.