android LocationManager.requestLocationUpdates with minTime >0 not working as expected

I set

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 0f, this);开发者_如何学Go

it has an odd behavior, locationChanged gets called every second instead of any time close to 1 minute. Secondly, locationChanged gets called every second for like 10 seconds, then stops completely, the gps satalites icon disappears, then only resumes again when the screen returns from display timeout.

what's wrong?

I'm currently on android 1.5.

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The minTime (60000) is just a hint, and there's no guarantee that your locationlistener will kick in at an exact 1 minute interval. Combined with the minDistance=0, you'll probably receive a lot more updates.

I would increase the minDistance to 1m minimum, and implement compensation logic to achieve the 1 minute interval in your code. You LocationListener can be implemented in such a way that if location updates follow too closely, they are ignored and not processed.

You'll also get different locations through your location listener, with a different accuracy, all within that minute interval.

Your location listener can pick the best accuracy, and remember when the last location was processed by maintaining state (lastLocationProcessedAt).