Use fused location provider

app/src/google/java/org/traccar/client/GooglePositionProvider.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.client;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.location.Location;
+
+import com.google.android.gms.location.FusedLocationProviderClient;
+import com.google.android.gms.location.LocationCallback;
+import com.google.android.gms.location.LocationRequest;
+import com.google.android.gms.location.LocationResult;
+import com.google.android.gms.location.LocationServices;
+import com.google.android.gms.tasks.OnSuccessListener;
+
+public class GooglePositionProvider extends PositionProvider {
+
+    private FusedLocationProviderClient fusedLocationClient;
+
+    public GooglePositionProvider(Context context, PositionListener listener) {
+        super(context, listener);
+        fusedLocationClient = LocationServices.getFusedLocationProviderClient(context);
+    }
+
+    @SuppressLint("MissingPermission")
+    public void startUpdates() {
+        LocationRequest locationRequest = new LocationRequest();
+        locationRequest.setPriority(getPriority(preferences.getString(MainFragment.KEY_ACCURACY, "medium")));
+        locationRequest.setInterval(distance > 0 || angle > 0 ? MINIMUM_INTERVAL : interval);
+        fusedLocationClient.requestLocationUpdates(locationRequest, locationCallback, null);
+    }
+
+    public void stopUpdates() {
+        fusedLocationClient.removeLocationUpdates(locationCallback);
+    }
+
+    @SuppressLint("MissingPermission")
+    public void requestSingleLocation() {
+        fusedLocationClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
+            @Override
+            public void onSuccess(Location location) {
+                if (location != null) {
+                    listener.onPositionUpdate(new Position(deviceId, location, getBatteryLevel(context)));
+                }
+            }
+        });
+    }
+
+    private static int getPriority(String accuracy) {
+        switch (accuracy) {
+            case "high":
+                return LocationRequest.PRIORITY_HIGH_ACCURACY;
+            case "low":
+                return LocationRequest.PRIORITY_LOW_POWER;
+            default:
+                return LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY;
+        }
+    }
+
+    private LocationCallback locationCallback = new LocationCallback() {
+        @Override
+        public void onLocationResult(LocationResult locationResult) {
+            if (locationResult != null) {
+                for (Location location : locationResult.getLocations()) {
+                    processLocation(location);
+                }
+            }
+        }
+    };
+
+}

app/src/google/java/org/traccar/client/PositionProviderFactory.java

@@ -20,7 +20,7 @@ import android.content.Context;
 public class PositionProviderFactory {
 
     public static PositionProvider create(Context context, PositionProvider.PositionListener listener) {
-        return new AndroidPositionProvider(context, listener);
+        return new GooglePositionProvider(context, listener);
     }
 
 }