Improved user location on Android (react-native-maps#2993)

* Use custom made LocationSource

* Added property to set priority for user location

* Property for setting priority of user location

* Property for update interval of user location

* Changed default update interval for user location to 5000 ms

* Property for setting fastest interval for user location updates

* Updated documentation

* Fixed documentation update

* Fixed documentation update

* Fixed documentation update

* Fixed documentation update

* Fixed documentation update

* Set fields to final where possible

* Merged changes for AndroidX

Co-authored-by: jmrhvl <45755981+jmrhvl@users.noreply.github.com>

Author: funkyfourier

docs/mapview.md

@@ -15,6 +15,9 @@
 | `mapType` | `String` | `"standard"` | The map type to be displayed. <br/><br/> - standard: standard road map (default)<br/> - none: no map **Note** Not available on MapKit<br/> - satellite: satellite view<br/> - hybrid: satellite view with roads and points of interest overlayed<br/> - terrain: (Android only) topographic view<br/> - mutedStandard: more subtle, makes markers/lines pop more (iOS 11.0+ only)
 | `customMapStyle` | `Array` |  | Adds custom styling to the map component. See [README](https://github.com/react-native-community/react-native-maps#customizing-the-map-style) for more information.
 | `showsUserLocation` | `Boolean` | `false` | If `true` the app will ask for the user's location. **NOTE**: You need to add `NSLocationWhenInUseUsageDescription` key in Info.plist to enable geolocation, otherwise it is going to *fail silently*! You will also need to add an explanation for why you need the users location against `NSLocationWhenInUseUsageDescription` in Info.plist. Otherwise Apple may reject your app submission.
+| `userLocationPriority` | 'balanced'\|'high'\|'low'\|'passive' | 'high' | Set power priority of user location tracking. See [Google APIs documentation](https://developers.google.com/android/reference/com/google/android/gms/location/LocationRequest.html). **Note:** Android only.
+| `userLocationUpdateInterval` | `Number` | 5000 | Interval of user location updates in milliseconds. See [Google APIs documentation](https://developers.google.com/android/reference/com/google/android/gms/location/LocationRequest.html). **Note:** Android only.
+| `userLocationFastestInterval` | `Number` |  | Fastest interval the application will actively acquire locations. See [Google APIs documentation](https://developers.google.com/android/reference/com/google/android/gms/location/LocationRequest.html). **Note:** Android only.
 | `userLocationAnnotationTitle` | `String` | | The title of the annotation for current user location. This only works if `showsUserLocation` is true. There is a default value `My Location` set by MapView. **Note**: iOS only.
 | `followsUserLocation` | `Boolean` | `false` | If `true` the map will focus on the user's location. This only works if `showsUserLocation` is true and the user has shared their location. **Note**: iOS only.
 | `showsMyLocationButton` | `Boolean` | `true` | If `false` hide the button to move map to the current user's location.

lib/android/src/main/java/com/airbnb/android/react/maps/AirMapManager.java

@@ -14,6 +14,7 @@
 import com.facebook.react.uimanager.ViewGroupManager;
 import com.facebook.react.uimanager.annotations.ReactProp;
 import com.facebook.react.uimanager.events.RCTEventEmitter;
+import com.google.android.gms.location.LocationRequest;
 import com.google.android.gms.maps.GoogleMap;
 import com.google.android.gms.maps.GoogleMapOptions;
 import com.google.android.gms.maps.model.LatLng;
@@ -50,6 +51,13 @@ public class AirMapManager extends ViewGroupManager<AirMapView> {
       "none", GoogleMap.MAP_TYPE_NONE
   );
 
+  private final Map<String, Integer> MY_LOCATION_PRIORITY = MapBuilder.of(
+          "balanced", LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY,
+          "high", LocationRequest.PRIORITY_HIGH_ACCURACY,
+          "low", LocationRequest.PRIORITY_LOW_POWER,
+          "passive", LocationRequest.PRIORITY_NO_POWER
+  );
+
   private final ReactApplicationContext appContext;
   private AirMapMarkerManager markerManager;
 
@@ -152,6 +160,21 @@ public void setShowsUserLocation(AirMapView view, boolean showUserLocation) {
     view.setShowsUserLocation(showUserLocation);
   }
 
+  @ReactProp(name = "userLocationPriority")
+  public void setUserLocationPriority(AirMapView view, @Nullable String accuracy) {
+    view.setUserLocationPriority(MY_LOCATION_PRIORITY.get(accuracy));
+  }
+
+  @ReactProp(name = "userLocationUpdateInterval", defaultInt = 5000)
+  public void setUserLocationUpdateInterval(AirMapView view, int updateInterval) {
+    view.setUserLocationUpdateInterval(updateInterval);
+  }
+
+  @ReactProp(name = "userLocationFastestInterval", defaultInt = 5000)
+  public void setUserLocationFastestInterval(AirMapView view, int fastestInterval) {
+    view.setUserLocationFastestInterval(fastestInterval);
+  }
+
   @ReactProp(name = "showsMyLocationButton", defaultBoolean = true)
   public void setShowsMyLocationButton(AirMapView view, boolean showMyLocationButton) {
     view.setShowsMyLocationButton(showMyLocationButton);

lib/android/src/main/java/com/airbnb/android/react/maps/FusedLocationSource.java

@@ -0,0 +1,64 @@
+package com.airbnb.android.react.maps;
+
+import android.content.Context;
+import android.location.Location;
+import android.os.Looper;
+
+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.maps.LocationSource;
+import com.google.android.gms.tasks.OnSuccessListener;
+
+public class FusedLocationSource implements LocationSource {
+
+    private final FusedLocationProviderClient fusedLocationClientProviderClient;
+    private final LocationRequest locationRequest;
+    private LocationCallback locationCallback;
+
+    public FusedLocationSource(Context context){
+        fusedLocationClientProviderClient =
+                LocationServices.getFusedLocationProviderClient(context);
+        locationRequest = LocationRequest.create();
+        locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
+        locationRequest.setInterval(5000);
+    }
+
+    public void setPriority(int priority){
+        locationRequest.setPriority(priority);
+    }
+
+    public void setInterval(int interval){
+        locationRequest.setInterval(interval);
+    }
+
+    public void setFastestInterval(int fastestInterval){
+        locationRequest.setFastestInterval(fastestInterval);
+    }
+
+    @Override
+    public void activate(final OnLocationChangedListener onLocationChangedListener) {
+        fusedLocationClientProviderClient.getLastLocation().addOnSuccessListener(new OnSuccessListener<Location>() {
+            @Override
+            public void onSuccess(Location location) {
+                onLocationChangedListener.onLocationChanged(location);
+            }
+        });
+        locationCallback = new LocationCallback() {
+            @Override
+            public void onLocationResult(LocationResult locationResult) {
+                for (Location location : locationResult.getLocations()) {
+                    onLocationChangedListener.onLocationChanged(location);
+                }
+            }
+        };
+        fusedLocationClientProviderClient.requestLocationUpdates(locationRequest, locationCallback, Looper.myLooper());
+    }
+
+    @Override
+    public void deactivate() {
+        fusedLocationClientProviderClient.removeLocationUpdates(locationCallback);
+    }
+}