如何添加仅使用GPS_PROVIDER作为提供者而不使用NETWORK_PROVIDER触发的位置接近警报

Question

I am able to set a location proximity alert with addProximityAlert and receive the alerts with a broadcast receiver.

But how will I be able to identify the location proximity alert is fired from a location provided by a GPS_PROVIDER and not a NETWORK_PROVIDER. I just want to make sure that the alerts are fired from an accurate location.

Answer 1

I have exactly the opposite problem - I would not want it to use the GPS provider due to the battery drain. But it seems there is no currently known solution. One thing I might be investigating is setting the location radius higher - hoping that a radius of 1000m would automatically not use GPS for example. In my current testing, it seems a radius of 250m will definitely trigger GPS location. At leas

Answer 2

I read on various sources that ProximityAlerts use BOTH Network and GPS provider, so I think that it really depends on the specified radius. In my test, if I have GPS enabled but set a 1000m radius, it fires the alert in a way that makes me think it's using the Network provider, because I'm sure I'm over the 1000 radius (thus the position detected by the device could only be approximated)

Answer 3

It is not recommended to use GPS provider as it ideals when phone's screen is off, and battery drain issues, but still if you want to then use following:

LocationListener ll;
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE );

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);
locationManager.addProximityAlert(latitude, longitude, radius, -1, proximityIntent);
//you have to define latitude,longitude,radius etc parameters yourself

you can change "GPS_PROVIDER" to "NETWORK_PROVIDER" in order to use network provided location