问题
I'm using a GPS provider and LocationListener.onLocationChanged(Location location) to receive location fixes.
Documentation says, that Location.getExtras() contains next key/value pair:
satellites - the number of satellites used to derive the fix
but on practice I'm getting an empty extra object - there is no any data there.
Does it means that I'm getting the A-GPS fixes and not GPS?
回答1:
To get the number of satellites used by the GPS engine you need to implement android.location.GpsStatus.Listener
and implement its method onGpsStatusChanged()
.
Example...
public void onGpsStatusChanged(int event) {
int satellites = 0;
int satellitesInFix = 0;
int timetofix = locationManager.getGpsStatus(null).getTimeToFirstFix();
Log.i(TAG, "Time to first fix = " + timetofix);
for (GpsSatellite sat : locationManager.getGpsStatus(null).getSatellites()) {
if(sat.usedInFix()) {
satellitesInFix++;
}
satellites++;
}
Log.i(TAG, satellites + " Used In Last Fix ("+satellitesInFix+")");
}
回答2:
I use Location.getExtras().getInt("satellites"), and it give the number of satellites in use.
回答3:
Nope it means that your phone manufacturer decided not to implement this. (Or you could be using the NETWORK_PROVIDER
which does not use satellites)
Use a NmeaListener and parse the sentences to know the number of satellites visible or used.
来源:https://stackoverflow.com/questions/6580603/getting-the-number-of-satellites-from-location-object