I made a test application for Gps, Wifi and Fused Location Provider and tested it for 2 days. This is better because he uses both of them, and most of the time he is the most accurate. In addition, Gps data is very noisy jitter data to resolve this low-pass filter or other filters. One of the most successful filters used to get the most accurate results is the Kalman filter. FusedLocationProvider uses this filter in the same way as the RotationVector, which is a fused sensor that combines hardware and software. The RotationVector uses an accelerometer, gyroscope (if equipped) and a magnetic field sensor to receive and filter location and azimuth data.
Location.getProvider for Gps with a LocationManager returns “gps”, Wifi returns “network”, and FusedLocationProvider returns “fused”.
When GPS is off and I set HIGH priority, does this mean that GPS will be automatically turned on or not
Everything except the "Battery" is turned off, if available. These settings are available on my Android 7.1.1 phone. The setting for the location was different in previous versions of Android on the user side. As a developer, to enable the use of Gps, you must set mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
PRIORITY_HIGH_ACCURACY - Use this parameter to request the most accurate location. With this setting, location services are more likely to use GPS to determine location.
The priority setting also determines the level of battery usage.
Can I install UpdateLocation using the Fused provider with high priority on demand to keep the battery at least a little?
Yes, you can set the location request interval in addition to priority.
mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS); mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);
How can I find out what a paid provider is using (is it GPS or a network provider)?
A location from Wifi never returns true for Location.hasSpeed (), but Gps almost always returns true if you are outside. Also, location.getExtras () have satellite tags that you can check for satellites that are only available for GPS. The speed may be wrong if you go or while reading so far, I have not tried it by car, when the speed is less than 5 km / h, this is not very accurate. I mean, if you use FLP, and the last location data contains speed information determined from Gps .
Are there any negative points?
As with Android 8.0 and above, l restriction on retrieving ocation unless you use the Foreground service or get a foreground location until the application pauses for both FLP and LocationManager.
FLP also requires that GooglePlayService be available on the user device and must be above a certain version. 10 or 11, depending on which one you are using. This can be a problem if you want to publish your applications in a country, such as China, which prohibits Google Play services.