Sensor: on start register GPS only once.

Part of #2369.

src/main/java/de/dennisguse/opentracks/sensors/GpsHandler.java

@@ -45,8 +45,9 @@ public class GpsHandler extends SensorHandler<Location, Position> {
                 gpsStatusManager.onMinSamplingIntervalChanged(PreferencesUtils.getMinSamplingInterval());
             }
 
-            //TODO
+            if (driver != null) {
-            connect();
+                driver.updateDriverParameters(getContext(), sensorManager.getHandler());
+            }
         }
     };
 

src/main/java/de/dennisguse/opentracks/sensors/SensorHandler.java

@@ -21,11 +21,11 @@ public abstract class SensorHandler<AggregatorInput, AggregatorOutput> implement
 
     private static final String TAG = SensorHandler.class.getSimpleName();
 
-    private final SensorManager sensorManager;
-
     @VisibleForTesting
     public Driver driver;
 
+    protected final SensorManager sensorManager;
+
     protected Aggregator<AggregatorInput, AggregatorOutput> aggregator;
 
     protected SensorHandler(SensorManager sensorManager) {

src/main/java/de/dennisguse/opentracks/sensors/driver/Driver.java

@@ -11,5 +11,9 @@ public interface Driver {
     //TODO Remove from interface?
     boolean isConnected();
 
+    default void updateDriverParameters(Context context, Handler handler) {
+        throw new UnsupportedOperationException();
+    }
+
     void disconnect();
 }

src/main/java/de/dennisguse/opentracks/sensors/driver/GpsInternal.java

@@ -57,16 +57,11 @@ public class GpsInternal implements Driver {
             return;
         }
 
-        LocationRequestCompat locationRequest = new LocationRequestCompat.Builder(PreferencesUtils.getMinSamplingInterval().toMillis())
-                .setQuality(LocationRequestCompat.QUALITY_HIGH_ACCURACY)
-                .setMaxUpdateDelayMillis(0)
-                .build();
-
         if (PermissionRequester.GPS.hasPermission(context)) {
             try {
-                Log.i(TAG, "Register for location updates " + context);
+                Log.i(TAG, "Register for location updates");
                 driverObserver.onConnected(null, null);
-                LocationManagerCompat.requestLocationUpdates(locationManager, LOCATION_PROVIDER, locationRequest, handler::post, locationListenerCompat);
+                LocationManagerCompat.requestLocationUpdates(locationManager, LOCATION_PROVIDER, createLocationRequest(), handler::post, locationListenerCompat);
                 return;
             } catch (SecurityException e) {
                 Log.e(TAG, "Could not register location listener; permissions not granted.", e);
@@ -76,6 +71,16 @@ public class GpsInternal implements Driver {
         driverObserver.onDisconnected();
     }
 
+    @SuppressWarnings({"MissingPermission"})
+    @Override
+    public void updateDriverParameters(Context context, Handler handler) {
+        if (!isConnected()) return;
+
+        Log.i(TAG, "Update for location updates");
+        driverObserver.onConnected(null, null);
+        LocationManagerCompat.requestLocationUpdates(locationManager, LOCATION_PROVIDER, createLocationRequest(), handler::post, locationListenerCompat);
+    }
+
     @SuppressWarnings({"MissingPermission"})
     @Override
     public void disconnect() {
@@ -87,9 +92,15 @@ public class GpsInternal implements Driver {
         driverObserver.onDisconnected();
     }
 
-
     @Override
     public boolean isConnected() {
         return locationManager != null;
     }
+
+    private LocationRequestCompat createLocationRequest() {
+        return new LocationRequestCompat.Builder(PreferencesUtils.getMinSamplingInterval().toMillis())
+                .setQuality(LocationRequestCompat.QUALITY_HIGH_ACCURACY)
+                .setMaxUpdateDelayMillis(0)
+                .build();
+    }
 }