From 9f88e373665124464351424e1efc95fe3a1fc05d Mon Sep 17 00:00:00 2001
From: Tobrun <tobrun@mapbox.com>
Date: Fri, 9 Jun 2017 10:00:00 +0200
Subject: [PATCH] Custom location source fix (#9142)

*  [android] - custom location engine fixes (#9139)

* Update to latest LOST dependency, fixup internal location source integration
---
 .../java/com/mapbox/mapboxsdk/Mapbox.java     |  12 +-
 .../mapboxsdk/constants/MapboxConstants.java  |   2 +-
 .../mapboxsdk/location/LocationSource.java    |  40 +---
 .../com/mapbox/mapboxsdk/maps/MapboxMap.java  |   3 -
 .../mapboxsdk/maps/TrackingSettings.java      |  31 ++-
 .../maps/widgets/MyLocationView.java          |  58 ++++--
 .../maps/widgets/MyLocationViewTest.java      |   4 +-
 .../activity/FeatureOverviewActivity.java     |  52 ++---
 .../userlocation/BaseLocationActivity.java    |  46 +++--
 .../CustomLocationEngineActivity.java         |  36 +++-
 .../userlocation/MockLocationEngine.java      | 125 ++++++++-----
 .../MyLocationDrawableActivity.java           |  48 ++---
 .../userlocation/MyLocationTintActivity.java  |   3 -
 .../MyLocationToggleActivity.java             |  65 ++-----
 .../MyLocationTrackingModeActivity.java       | 177 ++++++++++++------
 .../layout/activity_my_location_tracking.xml  |   2 +-
 .../main/res/menu/menu_location_engine.xml    |  20 ++
 .../src/main/res/values/strings.xml           |   3 +
 .../java/com/mapbox/mapboxsdk/MapboxTest.java |   5 +-
 platform/android/dependencies.gradle          |   4 +-
 20 files changed, 444 insertions(+), 292 deletions(-)
 create mode 100644 platform/android/MapboxGLAndroidSDKTestApp/src/main/res/menu/menu_location_engine.xml

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/Mapbox.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/Mapbox.java
index 81134e9497d..17cd4e0dce5 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/Mapbox.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/Mapbox.java
@@ -30,6 +30,7 @@ public final class Mapbox {
   private Context context;
   private String accessToken;
   private Boolean connected;
+  private LocationSource locationSource;
 
   /**
    * Get an instance of Mapbox.
@@ -45,8 +46,8 @@ public final class Mapbox {
   public static synchronized Mapbox getInstance(@NonNull Context context, @NonNull String accessToken) {
     if (INSTANCE == null) {
       Context appContext = context.getApplicationContext();
-      INSTANCE = new Mapbox(appContext, accessToken);
-      LocationEngine locationEngine = LocationSource.getLocationEngine(appContext);
+      INSTANCE = new Mapbox(appContext, accessToken, new LocationSource(appContext));
+      LocationEngine locationEngine = new LocationSource(appContext);
       locationEngine.setPriority(LocationEnginePriority.NO_POWER);
       MapboxTelemetry.getInstance().initialize(
         appContext, accessToken, BuildConfig.MAPBOX_EVENTS_USER_AGENT, locationEngine);
@@ -55,9 +56,10 @@ public static synchronized Mapbox getInstance(@NonNull Context context, @NonNull
     return INSTANCE;
   }
 
-  Mapbox(@NonNull Context context, @NonNull String accessToken) {
+  Mapbox(@NonNull Context context, @NonNull String accessToken, LocationSource locationSource) {
     this.context = context;
     this.accessToken = accessToken;
+    this.locationSource = locationSource;
   }
 
   /**
@@ -128,4 +130,8 @@ public static synchronized Boolean isConnected() {
     NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
     return (activeNetwork != null && activeNetwork.isConnected());
   }
+
+  public static LocationSource getLocationSource() {
+    return INSTANCE.locationSource;
+  }
 }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MapboxConstants.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MapboxConstants.java
index 0396defe74f..1ee59057d23 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MapboxConstants.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MapboxConstants.java
@@ -134,5 +134,5 @@ public class MapboxConstants {
   public static final String STATE_ATTRIBUTION_MARGIN_BOTTOM = "mapbox_atrrMarginBottom";
   public static final String STATE_ATTRIBUTION_ENABLED = "mapbox_atrrEnabled";
   public static final String STATE_LOCATION_CHANGE_ANIMATION_ENABLED = "mapbox_locationChangeAnimationEnabled";
-
+  public static final String STATE_USING_CUSTOM_LOCATION_SOURCE = "mapbox_usingCustomLocationSource";
 }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationSource.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationSource.java
index 4e934fa3ccb..8416bd5b6cf 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationSource.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/location/LocationSource.java
@@ -2,7 +2,7 @@
 
 import android.content.Context;
 import android.location.Location;
-import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 
 import com.mapbox.services.android.telemetry.location.LocationEngine;
 import com.mapbox.services.android.telemetry.location.LocationEngineListener;
@@ -13,10 +13,6 @@
 import com.mapzen.android.lost.api.LocationServices;
 import com.mapzen.android.lost.api.LostApiClient;
 
-import java.lang.ref.WeakReference;
-
-import timber.log.Timber;
-
 /**
  * Manages locational updates. Contains methods to register and unregister location listeners.
  * <ul>
@@ -35,40 +31,24 @@
 public class LocationSource extends LocationEngine implements
   LostApiClient.ConnectionCallbacks, LocationListener {
 
-  private static LocationEngine instance;
-
-  private WeakReference<Context> context;
+  private Context context;
   private LostApiClient lostApiClient;
 
-  private LocationSource(Context context) {
+  public LocationSource(Context context) {
     super();
-    this.context = new WeakReference<>(context);
-    lostApiClient = new LostApiClient.Builder(this.context.get())
+    this.context = context.getApplicationContext();
+    lostApiClient = new LostApiClient.Builder(this.context)
       .addConnectionCallbacks(this)
       .build();
   }
 
-  /**
-   * Get the LocationEngine instance.
-   *
-   * @param context a Context from which the application context is derived
-   * @return the LocationEngine instance
-   */
-  public static synchronized LocationEngine getLocationEngine(@NonNull Context context) {
-    if (instance == null) {
-      instance = new LocationSource(context.getApplicationContext());
-    }
-
-    return instance;
-  }
-
   /**
    * Activate the location engine which will connect whichever location provider you are using. You'll need to call
    * this before requesting user location updates using {@link LocationEngine#requestLocationUpdates()}.
    */
   @Override
   public void activate() {
-    if (lostApiClient != null && !lostApiClient.isConnected()) {
+    if (!lostApiClient.isConnected()) {
       lostApiClient.connect();
     }
   }
@@ -80,7 +60,7 @@ public void activate() {
    */
   @Override
   public void deactivate() {
-    if (lostApiClient != null && lostApiClient.isConnected()) {
+    if (lostApiClient.isConnected()) {
       lostApiClient.disconnect();
     }
   }
@@ -111,7 +91,6 @@ public void onConnected() {
    */
   @Override
   public void onConnectionSuspended() {
-    Timber.d("Connection suspended.");
   }
 
   /**
@@ -120,8 +99,9 @@ public void onConnectionSuspended() {
    * @return the last known location
    */
   @Override
+  @Nullable
   public Location getLastLocation() {
-    if (lostApiClient.isConnected() && PermissionsManager.areLocationPermissionsGranted(context.get())) {
+    if (lostApiClient.isConnected() && PermissionsManager.areLocationPermissionsGranted(context)) {
       //noinspection MissingPermission
       return LocationServices.FusedLocationApi.getLastLocation(lostApiClient);
     }
@@ -151,7 +131,7 @@ public void requestLocationUpdates() {
       request.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
     }
 
-    if (lostApiClient.isConnected() && PermissionsManager.areLocationPermissionsGranted(context.get())) {
+    if (lostApiClient.isConnected() && PermissionsManager.areLocationPermissionsGranted(context)) {
       //noinspection MissingPermission
       LocationServices.FusedLocationApi.requestLocationUpdates(lostApiClient, request, this);
     }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java
index 8e50adb777c..8a708cb1869 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java
@@ -37,7 +37,6 @@
 import com.mapbox.mapboxsdk.constants.Style;
 import com.mapbox.mapboxsdk.geometry.LatLng;
 import com.mapbox.mapboxsdk.geometry.LatLngBounds;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.widgets.MyLocationViewSettings;
 import com.mapbox.mapboxsdk.style.layers.Filter;
 import com.mapbox.mapboxsdk.style.layers.Layer;
@@ -1872,8 +1871,6 @@ public void setOnMyLocationChangeListener(@Nullable MapboxMap.OnMyLocationChange
    * Replaces the location source of the my-location layer.
    *
    * @param locationSource A {@link LocationEngine} location source to use in the my-location layer.
-   *                       Set to null to use the default {@link LocationSource}
-   *                       location source.
    */
   @UiThread
   public void setLocationSource(@Nullable LocationEngine locationSource) {
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
index 2e12de8dec9..bd0bf7c83b9 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/TrackingSettings.java
@@ -6,11 +6,11 @@
 import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
 
+import com.mapbox.mapboxsdk.Mapbox;
 import com.mapbox.mapboxsdk.camera.CameraPosition;
 import com.mapbox.mapboxsdk.constants.MapboxConstants;
 import com.mapbox.mapboxsdk.constants.MyBearingTracking;
 import com.mapbox.mapboxsdk.constants.MyLocationTracking;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.widgets.MyLocationView;
 import com.mapbox.services.android.telemetry.location.LocationEngine;
 import com.mapbox.services.android.telemetry.location.LocationEngineListener;
@@ -30,6 +30,7 @@ public final class TrackingSettings {
   private LocationEngine locationSource;
   private LocationEngineListener myLocationListener;
   private boolean locationChangeAnimationEnabled = true;
+  private boolean isCustomLocationSource;
 
   private boolean myLocationEnabled;
   private boolean dismissLocationTrackingOnGesture = true;
@@ -47,7 +48,7 @@ public final class TrackingSettings {
   }
 
   void initialise(MapboxMapOptions options) {
-    locationSource = LocationSource.getLocationEngine(myLocationView.getContext());
+    locationSource = Mapbox.getLocationSource();
     setMyLocationEnabled(options.getLocationEnabled());
   }
 
@@ -58,11 +59,15 @@ void onSaveInstanceState(Bundle outState) {
     outState.putBoolean(MapboxConstants.STATE_MY_BEARING_TRACKING_DISMISS, isDismissBearingTrackingOnGesture());
     outState.putBoolean(MapboxConstants.STATE_MY_LOCATION_ENABLED, isMyLocationEnabled());
     outState.putBoolean(MapboxConstants.STATE_LOCATION_CHANGE_ANIMATION_ENABLED, isLocationChangeAnimationEnabled());
+    outState.putBoolean(MapboxConstants.STATE_USING_CUSTOM_LOCATION_SOURCE, isCustomLocationSource());
   }
 
   void onRestoreInstanceState(Bundle savedInstanceState) {
     try {
-      setMyLocationEnabled(savedInstanceState.getBoolean(MapboxConstants.STATE_MY_LOCATION_ENABLED));
+      setMyLocationEnabled(
+        savedInstanceState.getBoolean(MapboxConstants.STATE_MY_LOCATION_ENABLED),
+        savedInstanceState.getBoolean(MapboxConstants.STATE_USING_CUSTOM_LOCATION_SOURCE)
+      );
     } catch (SecurityException ignore) {
       // User did not accept location permissions
     }
@@ -339,6 +344,10 @@ public void onLocationChanged(Location location) {
     }
   }
 
+  public boolean isCustomLocationSource() {
+    return isCustomLocationSource;
+  }
+
   void setOnMyLocationTrackingModeChangeListener(MapboxMap.OnMyLocationTrackingModeChangeListener listener) {
     this.onMyLocationTrackingModeChangeListener = listener;
   }
@@ -357,16 +366,30 @@ boolean isMyLocationEnabled() {
   }
 
   void setMyLocationEnabled(boolean locationEnabled) {
+    setMyLocationEnabled(locationEnabled, isCustomLocationSource());
+  }
+
+  private void setMyLocationEnabled(boolean locationEnabled, boolean isCustomLocationSource) {
     if (!PermissionsManager.areLocationPermissionsGranted(myLocationView.getContext())) {
       Timber.e("Could not activate user location tracking: "
         + "user did not accept the permission or permissions were not requested.");
       return;
     }
     myLocationEnabled = locationEnabled;
-    myLocationView.setEnabled(locationEnabled);
+    this.isCustomLocationSource = isCustomLocationSource;
+    myLocationView.setEnabled(locationEnabled, isCustomLocationSource);
   }
 
   void setLocationSource(LocationEngine locationSource) {
+    if (this.locationSource != null && this.locationSource.equals(locationSource)) {
+      // this source is already active
+      return;
+    }
+
+    this.isCustomLocationSource = locationSource != null;
+    if (locationSource == null) {
+      locationSource = Mapbox.getLocationSource();
+    }
     this.locationSource = locationSource;
     myLocationView.setLocationSource(locationSource);
   }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
index f648db413d9..9740679cf59 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/widgets/MyLocationView.java
@@ -26,6 +26,7 @@
 import android.view.View;
 import android.view.ViewGroup;
 
+import com.mapbox.mapboxsdk.Mapbox;
 import com.mapbox.mapboxsdk.camera.CameraPosition;
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.MyBearingTracking;
@@ -40,6 +41,8 @@
 
 import java.lang.ref.WeakReference;
 
+import timber.log.Timber;
+
 /**
  * UI element overlaid on a map to show the user's location.
  */
@@ -148,6 +151,10 @@ private void init(Context context) {
     compassListener = new CompassListener(context);
   }
 
+  public void init(LocationSource locationSource) {
+    this.locationSource = locationSource;
+  }
+
   public final void setForegroundDrawables(Drawable defaultDrawable, Drawable bearingDrawable) {
     if (defaultDrawable == null) {
       return;
@@ -391,9 +398,13 @@ public void setMapboxMap(MapboxMap mapboxMap) {
 
   @Override
   public void setEnabled(boolean enabled) {
+    setEnabled(enabled, false);
+  }
+
+  public void setEnabled(boolean enabled, boolean isCustomLocationSource) {
     super.setEnabled(enabled);
     setVisibility(enabled ? View.VISIBLE : View.INVISIBLE);
-    toggleGps(enabled);
+    toggleGps(enabled, isCustomLocationSource);
   }
 
   @Override
@@ -414,22 +425,23 @@ public void onRestoreInstanceState(Parcelable state) {
     super.onRestoreInstanceState(state);
   }
 
+  private void toggleGps(boolean enableGps) {
+    toggleGps(enableGps, mapboxMap != null && mapboxMap.getTrackingSettings().isCustomLocationSource());
+  }
+
   /**
    * Enabled / Disable GPS location updates along with updating the UI
    *
    * @param enableGps true if GPS is to be enabled, false if GPS is to be disabled
    */
-  private void toggleGps(boolean enableGps) {
-    if (locationSource == null) {
-      locationSource = LocationSource.getLocationEngine(this.getContext());
-    }
-
+  private void toggleGps(boolean enableGps, boolean isCustomLocationSource) {
     if (enableGps) {
-      // Set an initial location if one available
-      Location lastLocation = locationSource.getLastLocation();
-
-      if (lastLocation != null) {
-        setLocation(lastLocation);
+      if (locationSource == null) {
+        if (!isCustomLocationSource) {
+          locationSource = Mapbox.getLocationSource();
+        } else {
+          return;
+        }
       }
 
       if (userLocationListener == null) {
@@ -437,16 +449,18 @@ private void toggleGps(boolean enableGps) {
       }
 
       locationSource.addLocationEngineListener(userLocationListener);
+      locationSource.setPriority(LocationEnginePriority.HIGH_ACCURACY);
       locationSource.activate();
     } else {
+      if (locationSource == null) {
+        return;
+      }
       // Disable location and user dot
       location = null;
-      locationSource.removeLocationUpdates();
       locationSource.removeLocationEngineListener(userLocationListener);
+      locationSource.removeLocationUpdates();
       locationSource.deactivate();
     }
-
-    locationSource.setPriority(LocationEnginePriority.HIGH_ACCURACY);
   }
 
   public Location getLocation() {
@@ -564,7 +578,10 @@ public void setContentPadding(int[] padding) {
   }
 
   public void setLocationSource(LocationEngine locationSource) {
+    toggleGps(false);
     this.locationSource = locationSource;
+    this.userLocationListener = null;
+    setEnabled(isEnabled(), locationSource != null);
   }
 
   private static class GpsLocationListener implements LocationEngineListener {
@@ -580,10 +597,12 @@ private static class GpsLocationListener implements LocationEngineListener {
     @Override
     public void onConnected() {
       MyLocationView locationView = userLocationView.get();
-      if (locationView != null) {
-        LocationEngine locationEngine = locationSource.get();
-        Location location = locationEngine.getLastLocation();
-        locationView.setLocation(location);
+      LocationEngine locationEngine = locationSource.get();
+      if (locationView != null && locationEngine != null) {
+        Location lastKnownLocation = locationEngine.getLastLocation();
+        if (lastKnownLocation != null) {
+          locationView.setLocation(lastKnownLocation);
+        }
         locationEngine.requestLocationUpdates();
       }
     }
@@ -627,6 +646,9 @@ public void onPause() {
     }
 
     public boolean isSensorAvailable() {
+      if (rotationVectorSensor == null) {
+        Timber.e("Sensor.TYPE_ROTATION_VECTOR is missing from this device. Unable to use MyBearingTracking.COMPASS.");
+      }
       return rotationVectorSensor != null;
     }
 
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/maps/widgets/MyLocationViewTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/maps/widgets/MyLocationViewTest.java
index efd67db3562..fa19235ad07 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/maps/widgets/MyLocationViewTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/maps/widgets/MyLocationViewTest.java
@@ -9,12 +9,12 @@
 import android.support.test.espresso.ViewAction;
 import android.view.View;
 
+import com.mapbox.mapboxsdk.Mapbox;
 import com.mapbox.mapboxsdk.camera.CameraPosition;
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.MyBearingTracking;
 import com.mapbox.mapboxsdk.constants.MyLocationTracking;
 import com.mapbox.mapboxsdk.geometry.LatLng;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.widgets.MyLocationView;
 import com.mapbox.mapboxsdk.testapp.R;
@@ -104,7 +104,7 @@ public void perform(UiController uiController, View view) {
         mapboxMap.moveCamera(
           CameraUpdateFactory.newCameraPosition(
             new CameraPosition.Builder()
-              .target(new LatLng(LocationSource.getLocationEngine(view.getContext()).getLastLocation()))
+              .target(new LatLng(Mapbox.getLocationSource().getLastLocation()))
               .build()
           )
         );
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/FeatureOverviewActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/FeatureOverviewActivity.java
index 074be98f5cd..f8617366a02 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/FeatureOverviewActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/FeatureOverviewActivity.java
@@ -1,6 +1,5 @@
 package com.mapbox.mapboxsdk.testapp.activity;
 
-import android.Manifest;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
@@ -13,11 +12,10 @@
 import android.support.annotation.NonNull;
 import android.support.annotation.StringRes;
 import android.support.design.widget.Snackbar;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
+import android.text.TextUtils;
 import android.view.View;
 
 import com.mapbox.mapboxsdk.testapp.R;
@@ -25,6 +23,8 @@
 import com.mapbox.mapboxsdk.testapp.adapter.FeatureSectionAdapter;
 import com.mapbox.mapboxsdk.testapp.model.activity.Feature;
 import com.mapbox.mapboxsdk.testapp.utils.ItemClickSupport;
+import com.mapbox.services.android.telemetry.permissions.PermissionsListener;
+import com.mapbox.services.android.telemetry.permissions.PermissionsManager;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -40,19 +40,23 @@
  * It uses tags as category and description to order the different entries.
  * </p>
  */
-public class FeatureOverviewActivity extends AppCompatActivity {
+public class FeatureOverviewActivity extends AppCompatActivity implements PermissionsListener {
 
   private static final String KEY_STATE_FEATURES = "featureList";
 
+  private PermissionsManager permissionsManager;
   private RecyclerView recyclerView;
   private FeatureSectionAdapter sectionAdapter;
   private List<Feature> features;
+  private int locationActivityInList;
 
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_feature_overview);
 
+    permissionsManager = new PermissionsManager(this);
+
     recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
     recyclerView.setLayoutManager(new LinearLayoutManager(this));
     recyclerView.addOnItemTouchListener(new RecyclerView.SimpleOnItemTouchListener());
@@ -119,22 +123,26 @@ private void startFeature(Feature feature) {
   }
 
   private boolean requestLocationPermission(final int positionInList) {
-    if ((ContextCompat.checkSelfPermission(FeatureOverviewActivity.this,
-      Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
-      || (ContextCompat.checkSelfPermission(FeatureOverviewActivity.this,
-      Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)) {
-      ActivityCompat.requestPermissions(FeatureOverviewActivity.this, new String[] {
-        Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION}, positionInList);
+    if (isRuntimePermissionsRequired()) {
+      locationActivityInList = positionInList;
+      permissionsManager.requestLocationPermissions(this);
       return true;
-    } else {
-      return false;
     }
+    return false;
   }
 
   @Override
-  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
-    if (!isRuntimePermissionsRequired() || isPermissionAccepted(grantResults)) {
-      startFeature(features.get(requestCode));
+  public void onExplanationNeeded(List<String> list) {
+    Snackbar.make(
+      findViewById(android.R.id.content),
+      TextUtils.join("", list.toArray()),
+      Snackbar.LENGTH_SHORT).show();
+  }
+
+  @Override
+  public void onPermissionResult(boolean isPermissionGranted) {
+    if (isPermissionGranted) {
+      startFeature(features.get(locationActivityInList));
     } else {
       Snackbar.make(
         findViewById(android.R.id.content),
@@ -143,12 +151,14 @@ public void onRequestPermissionsResult(int requestCode, @NonNull String[] permis
     }
   }
 
-  private boolean isRuntimePermissionsRequired() {
-    return android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
+  @Override
+  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+    permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
   }
 
-  private boolean isPermissionAccepted(@NonNull int[] grantResults) {
-    return grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
+  private boolean isRuntimePermissionsRequired() {
+    return android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M;
   }
 
   @Override
@@ -219,13 +229,13 @@ private boolean requiresLocationPermission(String name, String category) {
         }
       };
 
-      List<String> requiresPermissionActvities = new ArrayList<String>() {
+      List<String> requiresPermissionActivities = new ArrayList<String>() {
         {
           add(resources.getString(R.string.activity_double_map));
         }
       };
 
-      return requiresPermissionCategories.contains(category) || requiresPermissionActvities.contains(name);
+      return requiresPermissionCategories.contains(category) || requiresPermissionActivities.contains(name);
     }
 
     @Override
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/BaseLocationActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/BaseLocationActivity.java
index a8d1772cb2e..f41e5e38f0f 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/BaseLocationActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/BaseLocationActivity.java
@@ -1,25 +1,34 @@
 package com.mapbox.mapboxsdk.testapp.activity.userlocation;
 
-import android.Manifest;
-import android.content.pm.PackageManager;
 import android.os.Build;
+import android.os.Bundle;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.support.annotation.UiThread;
-import android.support.v4.app.ActivityCompat;
+import android.support.design.widget.Snackbar;
 import android.support.v7.app.AppCompatActivity;
+import android.text.TextUtils;
 
+import com.mapbox.services.android.telemetry.permissions.PermissionsListener;
 import com.mapbox.services.android.telemetry.permissions.PermissionsManager;
 
-public abstract class BaseLocationActivity extends AppCompatActivity {
+import java.util.List;
 
-  private static final int PERMISSIONS_LOCATION = 0;
+public abstract class BaseLocationActivity extends AppCompatActivity implements PermissionsListener {
+
+  private PermissionsManager permissionsManager;
+
+  @Override
+  protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    permissionsManager = new PermissionsManager(this);
+  }
 
   @UiThread
   protected final void toggleGps(boolean enableGps) {
     if (enableGps) {
-      if (!PermissionsManager.areLocationPermissionsGranted(this)) {
-        ActivityCompat.requestPermissions(this, new String[] {Manifest.permission.ACCESS_COARSE_LOCATION,
-          Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSIONS_LOCATION);
+      if (!isRuntimePermissionsRequired()) {
+        permissionsManager.requestLocationPermissions(this);
       } else {
         enableLocation(true);
       }
@@ -29,16 +38,21 @@ protected final void toggleGps(boolean enableGps) {
   }
 
   @Override
-  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
-    if (requestCode == PERMISSIONS_LOCATION) {
-      if (!isRuntimePermissionsRequired() || isPermissionAccepted(grantResults)) {
-        enableLocation(true);
-      }
-    }
+  public void onExplanationNeeded(List<String> list) {
+    Snackbar.make(
+      findViewById(android.R.id.content),
+      TextUtils.join("", list.toArray()),
+      Snackbar.LENGTH_SHORT).show();
+  }
+
+  @Override
+  public void onPermissionResult(boolean isPermissionAccepted) {
+    enableLocation(isPermissionAccepted);
   }
 
-  private boolean isPermissionAccepted(int[] grantResults) {
-    return grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
+  @Override
+  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+    permissionsManager.onRequestPermissionsResult(requestCode, permissions, grantResults);
   }
 
   private boolean isRuntimePermissionsRequired() {
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/CustomLocationEngineActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/CustomLocationEngineActivity.java
index 660404f1441..b0ea9c608bb 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/CustomLocationEngineActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/CustomLocationEngineActivity.java
@@ -2,13 +2,15 @@
 
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
+import android.view.Menu;
+import android.view.MenuItem;
 import android.view.View;
 
+import com.mapbox.mapboxsdk.Mapbox;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.mapboxsdk.testapp.R;
-import com.mapbox.services.android.telemetry.location.LocationEngine;
 
 public class CustomLocationEngineActivity extends BaseLocationActivity {
 
@@ -16,22 +18,18 @@ public class CustomLocationEngineActivity extends BaseLocationActivity {
   private MapboxMap mapboxMap;
   private FloatingActionButton locationToggleFab;
 
-  private LocationEngine locationServices;
-
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_custom_location_engine);
 
-    locationServices = new MockLocationEngine();
-
     mapView = (MapView) findViewById(R.id.mapView);
     mapView.onCreate(savedInstanceState);
     mapView.getMapAsync(new OnMapReadyCallback() {
       @Override
       public void onMapReady(MapboxMap map) {
         mapboxMap = map;
-        mapboxMap.setLocationSource(locationServices);
+        mapboxMap.setLocationSource(MockLocationEngine.getInstance());
       }
     });
 
@@ -40,7 +38,7 @@ public void onMapReady(MapboxMap map) {
       @Override
       public void onClick(View view) {
         if (mapboxMap != null) {
-          toggleGps(!mapboxMap.isMyLocationEnabled());
+          enableLocation(!mapboxMap.isMyLocationEnabled());
         }
       }
     });
@@ -56,6 +54,30 @@ protected void enableLocation(boolean enabled) {
     }
   }
 
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    getMenuInflater().inflate(R.menu.menu_location_engine, menu);
+    return super.onCreateOptionsMenu(menu);
+  }
+
+  @Override
+  public boolean onOptionsItemSelected(MenuItem item) {
+    if (mapboxMap != null) {
+      int itemId = item.getItemId();
+      if (itemId == R.id.action_id_location_source_lost) {
+        mapboxMap.setLocationSource(Mapbox.getLocationSource());
+        return true;
+      } else if (itemId == R.id.action_id_location_source_mock) {
+        mapboxMap.setLocationSource(MockLocationEngine.getInstance());
+        return true;
+      } else if (itemId == R.id.action_id_location_source_null) {
+        mapboxMap.setLocationSource(null);
+        return true;
+      }
+    }
+    return super.onOptionsItemSelected(item);
+  }
+
   @Override
   protected void onStart() {
     super.onStart();
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MockLocationEngine.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MockLocationEngine.java
index b02b35b0d02..da3c78b07a5 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MockLocationEngine.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MockLocationEngine.java
@@ -1,38 +1,55 @@
 package com.mapbox.mapboxsdk.testapp.activity.userlocation;
 
-
+import android.animation.AnimatorListenerAdapter;
+import android.animation.TypeEvaluator;
+import android.animation.ValueAnimator;
 import android.location.Location;
-import android.os.Handler;
 
 import com.mapbox.services.android.telemetry.location.LocationEngine;
 import com.mapbox.services.android.telemetry.location.LocationEngineListener;
 
+import timber.log.Timber;
+
 /**
- * Sample LocationEngine that provides mocked locations simulating GPS updates
+ * Sample LocationEngine that provides mocked LOCATIONS simulating GPS updates
  */
 public class MockLocationEngine extends LocationEngine {
+  private static MockLocationEngine INSTANCE;
+
+  private final LocationAnimator locationAnimator;
+  private boolean running;
+  private static int counter;
+
+  MockLocationEngine(Location start, Location end) {
+    locationAnimator = new LocationAnimator(start, end, new ValueAnimator.AnimatorUpdateListener() {
+      @Override
+      public void onAnimationUpdate(ValueAnimator animation) {
+        for (LocationEngineListener listener : locationListeners) {
+          listener.onLocationChanged((Location) animation.getAnimatedValue());
+        }
+      }
+    });
+  }
+
+  public static synchronized MockLocationEngine getInstance() {
+    if (INSTANCE == null) {
+      INSTANCE = new MockLocationEngine(
+        MockLocationEngine.createLocation(40.416913, -3.703861),
+        MockLocationEngine.createLocation(39.461643, -0.368041)
+      );
+    }
+    return INSTANCE;
+  }
 
-  // Mocked data
-  private static final int UPDATE_INTERVAL_MS = 1000;
-  private static final double[][] locations = new double[][] {
-    new double[] {39.489309, -0.360415},
-    new double[] {39.492469, -0.358777},
-    new double[] {40.393285, -3.707260},
-    new double[] {40.394374, -3.707767},
-    new double[] {40.398012, -3.715943},
-    new double[] {40.416913, -3.703861}};
-
-  private Handler handler;
-  int currentIndex;
-
-  public MockLocationEngine() {
-    super();
+  public static Location createLocation(double latitude, double longitude) {
+    Location location = new Location(MockLocationEngine.class.getSimpleName());
+    location.setLatitude(latitude);
+    location.setLongitude(longitude);
+    return location;
   }
 
   @Override
   public void activate() {
-    currentIndex = 0;
-
     // "Connection" is immediate here
     for (LocationEngineListener listener : locationListeners) {
       listener.onConnected();
@@ -41,7 +58,6 @@ public void activate() {
 
   @Override
   public void deactivate() {
-    handler = null;
   }
 
   @Override
@@ -51,44 +67,61 @@ public boolean isConnected() {
 
   @Override
   public Location getLastLocation() {
-    return getNextLocation();
+    return null;
   }
 
   @Override
   public void requestLocationUpdates() {
-    // Fake regular updates with a handler
-    handler = new Handler();
-    handler.postDelayed(new LocationUpdateRunnable(), UPDATE_INTERVAL_MS);
+    if (!running) {
+      locationAnimator.start();
+      running = true;
+    }
   }
 
   @Override
   public void removeLocationUpdates() {
-    if (handler != null) {
-      handler.removeCallbacksAndMessages(null);
+    if (running) {
+      locationAnimator.stop();
+      running = false;
+      Timber.e("LOC %s", counter);
     }
   }
 
-  private Location getNextLocation() {
-    // Build the next location and rotate the index
-    Location location = new Location(MockLocationEngine.class.getSimpleName());
-    location.setLatitude(locations[currentIndex][0]);
-    location.setLongitude(locations[currentIndex][1]);
-    currentIndex = (currentIndex == locations.length - 1 ? 0 : currentIndex + 1);
-    return location;
-  }
+  private static class LocationAnimator extends AnimatorListenerAdapter {
 
-  private class LocationUpdateRunnable implements Runnable {
-    @Override
-    public void run() {
-      // Notify of an update
-      Location location = getNextLocation();
-      for (LocationEngineListener listener : locationListeners) {
-        listener.onLocationChanged(location);
-      }
+    private static final long DURATION_ANIMATION = 10000;
+    private final ValueAnimator locationAnimator;
+    private long animationTime;
+
+    LocationAnimator(Location start, Location end, ValueAnimator.AnimatorUpdateListener listener) {
+      locationAnimator = ValueAnimator.ofObject(new LocationEvaluator(), start, end);
+      locationAnimator.setDuration(DURATION_ANIMATION);
+      locationAnimator.addUpdateListener(listener);
+      locationAnimator.addListener(this);
+    }
+
+    void start() {
+      locationAnimator.start();
+      locationAnimator.setCurrentPlayTime(animationTime);
+    }
+
+    void stop() {
+      animationTime = locationAnimator.getCurrentPlayTime();
+      locationAnimator.cancel();
+    }
+
+    private static class LocationEvaluator implements TypeEvaluator<Location> {
+
+      private Location location = new Location(MockLocationEngine.class.getSimpleName());
 
-      if (handler != null) {
-        // Schedule the next update
-        handler.postDelayed(new LocationUpdateRunnable(), UPDATE_INTERVAL_MS);
+      @Override
+      public Location evaluate(float fraction, Location startValue, Location endValue) {
+        counter++;
+        location.setLatitude(startValue.getLatitude()
+          + ((endValue.getLatitude() - startValue.getLatitude()) * fraction));
+        location.setLongitude(startValue.getLongitude()
+          + ((endValue.getLongitude() - startValue.getLongitude()) * fraction));
+        return location;
       }
     }
   }
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationDrawableActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationDrawableActivity.java
index 5560f81fa90..86574341277 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationDrawableActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationDrawableActivity.java
@@ -11,33 +11,35 @@
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.Style;
 import com.mapbox.mapboxsdk.geometry.LatLng;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.MapboxMapOptions;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.mapboxsdk.testapp.R;
-import com.mapbox.services.android.telemetry.location.LocationEngineListener;
+
+import com.mapzen.android.lost.api.LocationListener;
+import com.mapzen.android.lost.api.LocationRequest;
+import com.mapzen.android.lost.api.LocationServices;
+import com.mapzen.android.lost.api.LostApiClient;
 
 /**
  * Test activity showcasing how to change the MyLocationView drawable.
  */
-public class MyLocationDrawableActivity extends BaseLocationActivity implements LocationEngineListener {
+public class MyLocationDrawableActivity extends BaseLocationActivity implements LostApiClient.ConnectionCallbacks,
+  LocationListener {
 
   private MapView mapView;
   private MapboxMap mapboxMap;
+  private LostApiClient lostApiClient;
 
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_my_location_customization);
-
     findViewById(R.id.progress).setVisibility(View.GONE);
 
     MapboxMapOptions mapboxMapOptions = new MapboxMapOptions();
     mapboxMapOptions.styleUrl(Style.MAPBOX_STREETS);
-
-    // configure MyLocationView drawables
     mapboxMapOptions.myLocationForegroundDrawable(ContextCompat.getDrawable(this, R.drawable.ic_android));
     mapboxMapOptions.myLocationBackgroundDrawable(ContextCompat.getDrawable(this, R.drawable.ic_android));
     mapboxMapOptions.myLocationForegroundTintColor(Color.GREEN);
@@ -45,7 +47,6 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
     mapboxMapOptions.myLocationBackgroundPadding(new int[] {0, 0,
       (int) getResources().getDimension(R.dimen.locationview_background_drawable_padding),
       (int) getResources().getDimension(R.dimen.locationview_background_drawable_padding)});
-
     mapboxMapOptions.myLocationAccuracyTint(Color.RED);
     mapboxMapOptions.myLocationAccuracyAlpha(155);
 
@@ -66,29 +67,29 @@ public void onMapReady(MapboxMap map) {
 
   @Override
   protected void enableLocation(boolean enabled) {
-    if (enabled) {
-      mapboxMap.setMyLocationEnabled(true);
-      Location location = mapboxMap.getMyLocation();
-      if (location != null) {
-        onLocationChanged(location);
-      } else {
-        LocationSource.getLocationEngine(this).addLocationEngineListener(this);
-      }
-    } else {
-      mapboxMap.setMyLocationEnabled(false);
+    mapboxMap.setMyLocationEnabled(enabled);
+    if (lostApiClient == null) {
+      lostApiClient = new LostApiClient.Builder(this).addConnectionCallbacks(this).build();
+      lostApiClient.connect();
     }
   }
 
   @Override
   public void onConnected() {
-    // Nothing
+    LocationRequest request = LocationRequest.create()
+      .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
+      .setInterval(5000)
+      .setSmallestDisplacement(10);
+    LocationServices.FusedLocationApi.requestLocationUpdates(lostApiClient, request, this);
   }
 
   @Override
   public void onLocationChanged(Location location) {
-    if (mapboxMap != null) {
-      mapboxMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location), 14));
-    }
+    mapboxMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location), 14));
+  }
+
+  @Override
+  public void onConnectionSuspended() {
   }
 
   @Override
@@ -113,6 +114,11 @@ protected void onPause() {
   protected void onStop() {
     super.onStop();
     mapView.onStop();
+    if (lostApiClient.isConnected()) {
+      LocationServices.FusedLocationApi.removeLocationUpdates(lostApiClient, this);
+      lostApiClient.disconnect();
+    }
+    lostApiClient.unregisterConnectionCallbacks(this);
   }
 
   @Override
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTintActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTintActivity.java
index a219b369f62..44ee0308856 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTintActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTintActivity.java
@@ -13,7 +13,6 @@
 import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.MyLocationTracking;
 import com.mapbox.mapboxsdk.geometry.LatLng;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
@@ -133,7 +132,6 @@ public void onLocationChanged(Location location) {
   protected void onStart() {
     super.onStart();
     mapView.onStart();
-    LocationSource.getLocationEngine(this).addLocationEngineListener(this);
   }
 
   @Override
@@ -151,7 +149,6 @@ public void onPause() {
   @Override
   protected void onStop() {
     super.onStop();
-    LocationSource.getLocationEngine(this).removeLocationEngineListener(this);
     mapView.onStop();
   }
 
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationToggleActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationToggleActivity.java
index ac6c346a88c..d465d676f73 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationToggleActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationToggleActivity.java
@@ -1,19 +1,15 @@
 package com.mapbox.mapboxsdk.testapp.activity.userlocation;
 
-import android.location.Location;
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
 import android.view.View;
 
-import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
-import com.mapbox.mapboxsdk.geometry.LatLng;
-import com.mapbox.mapboxsdk.location.LocationSource;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.mapboxsdk.testapp.R;
-import com.mapbox.services.android.telemetry.location.LocationEngine;
-import com.mapbox.services.android.telemetry.location.LocationEngineListener;
+
+import timber.log.Timber;
 
 public class MyLocationToggleActivity extends BaseLocationActivity {
 
@@ -21,16 +17,11 @@ public class MyLocationToggleActivity extends BaseLocationActivity {
   private MapboxMap mapboxMap;
   private FloatingActionButton locationToggleFab;
 
-  private LocationEngine locationServices;
-  private LocationEngineListener locationListener;
-
   @Override
   protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_my_location_toggle);
 
-    locationServices = LocationSource.getLocationEngine(this);
-
     mapView = (MapView) findViewById(R.id.mapView);
     mapView.onCreate(savedInstanceState);
     mapView.getMapAsync(new OnMapReadyCallback() {
@@ -51,6 +42,17 @@ public void onClick(View view) {
     });
   }
 
+  @Override
+  protected void enableLocation(boolean enabled) {
+    Timber.e("Enabling location: %s", enabled);
+    mapboxMap.setMyLocationEnabled(enabled);
+    if (enabled) {
+      locationToggleFab.setImageResource(R.drawable.ic_location_disabled);
+    } else {
+      locationToggleFab.setImageResource(R.drawable.ic_my_location);
+    }
+  }
+
   @Override
   protected void onStart() {
     super.onStart();
@@ -85,11 +87,6 @@ protected void onSaveInstanceState(Bundle outState) {
   protected void onDestroy() {
     super.onDestroy();
     mapView.onDestroy();
-    // Ensure no memory leak occurs if we register the location listener but the call hasn't
-    // been made yet.
-    if (locationListener != null) {
-      locationServices.removeLocationEngineListener(locationListener);
-    }
   }
 
   @Override
@@ -98,40 +95,4 @@ public void onLowMemory() {
     mapView.onLowMemory();
   }
 
-  @Override
-  protected void enableLocation(boolean enabled) {
-    if (enabled) {
-      // To move the camera instantly, we attempt to get the last known location and either
-      // ease or animate the camera to that position depending on the zoom level.
-      Location lastLocation = LocationSource.getLocationEngine(this).getLastLocation();
-
-      if (lastLocation != null) {
-        if (mapboxMap.getCameraPosition().zoom > 15.99) {
-          mapboxMap.easeCamera(CameraUpdateFactory.newLatLng(new LatLng(lastLocation)), 1000);
-        } else {
-          mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lastLocation), 16), 1000);
-        }
-      } else {
-        locationListener = new LocationEngineListener() {
-          @Override
-          public void onConnected() {
-            // Nothing
-          }
-
-          @Override
-          public void onLocationChanged(Location location) {
-            if (location != null) {
-              mapboxMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location), 16));
-              locationServices.removeLocationEngineListener(this);
-            }
-          }
-        };
-        locationServices.addLocationEngineListener(locationListener);
-      }
-      locationToggleFab.setImageResource(R.drawable.ic_location_disabled);
-    } else {
-      locationToggleFab.setImageResource(R.drawable.ic_my_location);
-    }
-    mapboxMap.setMyLocationEnabled(enabled);
-  }
 }
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTrackingModeActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTrackingModeActivity.java
index 3a3301b87ff..91f3de08373 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTrackingModeActivity.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/userlocation/MyLocationTrackingModeActivity.java
@@ -1,5 +1,6 @@
 package com.mapbox.mapboxsdk.testapp.activity.userlocation;
 
+import android.location.Location;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.v7.app.ActionBar;
@@ -13,14 +14,22 @@
 import android.widget.Spinner;
 import android.widget.Toast;
 
+import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
 import com.mapbox.mapboxsdk.constants.MyBearingTracking;
 import com.mapbox.mapboxsdk.constants.MyLocationTracking;
+import com.mapbox.mapboxsdk.geometry.LatLng;
 import com.mapbox.mapboxsdk.maps.MapView;
 import com.mapbox.mapboxsdk.maps.MapboxMap;
 import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
 import com.mapbox.mapboxsdk.maps.TrackingSettings;
 import com.mapbox.mapboxsdk.maps.UiSettings;
 import com.mapbox.mapboxsdk.testapp.R;
+import com.mapzen.android.lost.api.LocationListener;
+import com.mapzen.android.lost.api.LocationRequest;
+import com.mapzen.android.lost.api.LocationServices;
+import com.mapzen.android.lost.api.LostApiClient;
+
+import timber.log.Timber;
 
 /**
  * Test activity showcasing the different tracking modes the SDK exposes.
@@ -29,7 +38,11 @@
  * using gesture configurations.
  * </p>
  */
-public class MyLocationTrackingModeActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
+public class MyLocationTrackingModeActivity extends AppCompatActivity implements
+  AdapterView.OnItemSelectedListener, OnMapReadyCallback, LostApiClient.ConnectionCallbacks, LocationListener {
+
+  // Testing for user defined LostApiClient
+  private LostApiClient lostApiClient;
 
   public static final int TRACKING_NONE_INDEX = 0;
   public static final int TRACKING_FOLLOW_INDEX = 1;
@@ -41,6 +54,7 @@ public class MyLocationTrackingModeActivity extends AppCompatActivity implements
   private MapboxMap mapboxMap;
   private Spinner locationSpinner;
   private Spinner bearingSpinner;
+  private boolean firstRun = true;
 
   private MenuItem dismissLocationTrackingOnGestureItem;
   private MenuItem dismissBearingTrackingOnGestureItem;
@@ -51,7 +65,55 @@ public class MyLocationTrackingModeActivity extends AppCompatActivity implements
   protected void onCreate(final Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_my_location_tracking);
+    setupToolbar();
+
+    mapView = (MapView) findViewById(R.id.mapView);
+    mapView.onCreate(savedInstanceState);
+    mapView.getMapAsync(this);
+  }
+
+  @Override
+  public void onMapReady(MapboxMap mapboxMap) {
+    MyLocationTrackingModeActivity.this.mapboxMap = mapboxMap;
+    lostApiClient = new LostApiClient.Builder(this).addConnectionCallbacks(this).build();
+    lostApiClient.connect();
+  }
+
+  @Override
+  public void onConnected() {
+    LocationRequest request = LocationRequest.create()
+      .setPriority(LocationRequest.PRIORITY_LOW_POWER)
+      .setInterval(5000)
+      .setSmallestDisplacement(10);
+
+    Location location = LocationServices.FusedLocationApi.getLastLocation(lostApiClient);
+    if (location != null) {
+      setInitialLocation(location, 15);
+    }
+    LocationServices.FusedLocationApi.requestLocationUpdates(lostApiClient, request, this);
+  }
+
+  @Override
+  public void onConnectionSuspended() {
 
+  }
+
+  @Override
+  public void onLocationChanged(Location location) {
+    Timber.e("Location changed %s", location);
+    if (firstRun) {
+      setInitialLocation(location, 16);
+    }
+  }
+
+  private void setInitialLocation(Location location, double zoom) {
+    mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location), zoom));
+    mapboxMap.setMyLocationEnabled(true);
+    setupSpinners(mapboxMap);
+    firstRun = false;
+  }
+
+  private void setupToolbar() {
     Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
     setSupportActionBar(toolbar);
 
@@ -60,72 +122,60 @@ protected void onCreate(final Bundle savedInstanceState) {
       actionBar.setDisplayShowTitleEnabled(false);
       actionBar.setDisplayHomeAsUpEnabled(true);
       actionBar.setDisplayShowHomeEnabled(true);
-    }
-
-    locationSpinner = (Spinner) findViewById(R.id.spinner_location);
-    ArrayAdapter<CharSequence> locationTrackingAdapter = ArrayAdapter.createFromResource(
-      actionBar.getThemedContext(), R.array.user_tracking_mode, android.R.layout.simple_spinner_item);
-    locationTrackingAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-    locationSpinner.setAdapter(locationTrackingAdapter);
 
-    bearingSpinner = (Spinner) findViewById(R.id.spinner_bearing);
-    ArrayAdapter<CharSequence> bearingTrackingAdapter = ArrayAdapter.createFromResource(
-      actionBar.getThemedContext(), R.array.user_bearing_mode, android.R.layout.simple_spinner_item);
-    bearingTrackingAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
-    bearingSpinner.setAdapter(bearingTrackingAdapter);
+      locationSpinner = (Spinner) findViewById(R.id.spinner_location);
+      ArrayAdapter<CharSequence> locationTrackingAdapter = ArrayAdapter.createFromResource(
+        actionBar.getThemedContext(), R.array.user_tracking_mode, android.R.layout.simple_spinner_item);
+      locationTrackingAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+      locationSpinner.setAdapter(locationTrackingAdapter);
+
+      bearingSpinner = (Spinner) findViewById(R.id.spinner_bearing);
+      ArrayAdapter<CharSequence> bearingTrackingAdapter = ArrayAdapter.createFromResource(
+        actionBar.getThemedContext(), R.array.user_bearing_mode, android.R.layout.simple_spinner_item);
+      bearingTrackingAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+      bearingSpinner.setAdapter(bearingTrackingAdapter);
+    }
+  }
 
-    mapView = (MapView) findViewById(R.id.mapView);
-    mapView.onCreate(savedInstanceState);
+  private void setupSpinners(@NonNull MapboxMap mapboxMap) {
+    locationSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
+    bearingSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
+    setCheckBoxes();
 
-    mapView.getMapAsync(new OnMapReadyCallback() {
+    mapboxMap.setOnMyLocationTrackingModeChangeListener(new MapboxMap.OnMyLocationTrackingModeChangeListener() {
       @Override
-      public void onMapReady(@NonNull MapboxMap mapboxMap) {
-        MyLocationTrackingModeActivity.this.mapboxMap = mapboxMap;
-
+      public void onMyLocationTrackingModeChange(@MyLocationTracking.Mode int myLocationTrackingMode) {
+        locationSpinner.setOnItemSelectedListener(null);
+        switch (myLocationTrackingMode) {
+          case MyLocationTracking.TRACKING_NONE:
+            locationSpinner.setSelection(TRACKING_NONE_INDEX);
+            break;
+          case MyLocationTracking.TRACKING_FOLLOW:
+            locationSpinner.setSelection(TRACKING_FOLLOW_INDEX);
+            break;
+        }
         locationSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
-        bearingSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
-        setCheckBoxes();
-
-        mapboxMap.setOnMyLocationTrackingModeChangeListener(new MapboxMap.OnMyLocationTrackingModeChangeListener() {
-          @Override
-          public void onMyLocationTrackingModeChange(@MyLocationTracking.Mode int myLocationTrackingMode) {
-            locationSpinner.setOnItemSelectedListener(null);
-            switch (myLocationTrackingMode) {
-              case MyLocationTracking.TRACKING_NONE:
-                locationSpinner.setSelection(TRACKING_NONE_INDEX);
-                break;
-              case MyLocationTracking.TRACKING_FOLLOW:
-                locationSpinner.setSelection(TRACKING_FOLLOW_INDEX);
-                break;
-            }
-            locationSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
-          }
-        });
-
-        mapboxMap.setOnMyBearingTrackingModeChangeListener(new MapboxMap.OnMyBearingTrackingModeChangeListener() {
-          @Override
-          public void onMyBearingTrackingModeChange(@MyBearingTracking.Mode int myBearingTrackingMode) {
-            bearingSpinner.setOnItemSelectedListener(null);
-            switch (myBearingTrackingMode) {
-              case MyBearingTracking.NONE:
-                bearingSpinner.setSelection(BEARING_NONE_INDEX);
-                break;
-
-              case MyBearingTracking.GPS:
-                bearingSpinner.setSelection(BEARING_GPS_INDEX);
-                break;
-
-              case MyBearingTracking.COMPASS:
-                bearingSpinner.setSelection(BEARING_COMPASS_INDEX);
-                break;
-            }
-            bearingSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
-          }
-        });
-
-        if (savedInstanceState == null) {
-          mapboxMap.setMyLocationEnabled(true);
+      }
+    });
+
+    mapboxMap.setOnMyBearingTrackingModeChangeListener(new MapboxMap.OnMyBearingTrackingModeChangeListener() {
+      @Override
+      public void onMyBearingTrackingModeChange(@MyBearingTracking.Mode int myBearingTrackingMode) {
+        bearingSpinner.setOnItemSelectedListener(null);
+        switch (myBearingTrackingMode) {
+          case MyBearingTracking.NONE:
+            bearingSpinner.setSelection(BEARING_NONE_INDEX);
+            break;
+
+          case MyBearingTracking.GPS:
+            bearingSpinner.setSelection(BEARING_GPS_INDEX);
+            break;
+
+          case MyBearingTracking.COMPASS:
+            bearingSpinner.setSelection(BEARING_COMPASS_INDEX);
+            break;
         }
+        bearingSpinner.setOnItemSelectedListener(MyLocationTrackingModeActivity.this);
       }
     });
   }
@@ -186,6 +236,11 @@ protected void onPause() {
   @Override
   protected void onStop() {
     super.onStop();
+    LocationServices.FusedLocationApi.removeLocationUpdates(lostApiClient, this);
+    if (lostApiClient.isConnected()) {
+      lostApiClient.unregisterConnectionCallbacks(this);
+      lostApiClient.disconnect();
+    }
     mapView.onStop();
   }
 
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_my_location_tracking.xml b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_my_location_tracking.xml
index 95f084506bb..7236a944e90 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_my_location_tracking.xml
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_my_location_tracking.xml
@@ -45,6 +45,6 @@
         app:mapbox_myLocationTintColor="@color/primary"
         app:mapbox_myLocationAccuracyTintColor="@color/primary"
         app:mapbox_styleUrl="@string/mapbox_style_mapbox_streets"
-        app:mapbox_cameraZoom="15" />
+        app:mapbox_cameraZoom="8" />
 
 </LinearLayout>
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/menu/menu_location_engine.xml b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/menu/menu_location_engine.xml
new file mode 100644
index 00000000000..dd7408df096
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/menu/menu_location_engine.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:mapbox="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/action_id_location_source_lost"
+        android:title="@string/menuitem_title_change_location_source_lost"
+        mapbox:showAsAction="never"/>
+
+    <item
+        android:id="@+id/action_id_location_source_mock"
+        android:title="@string/menuitem_title_change_location_source_mock"
+        mapbox:showAsAction="never"/>
+
+    <item
+        android:id="@+id/action_id_location_source_null"
+        android:title="@string/menuitem_title_change_location_source_null"
+        mapbox:showAsAction="never"/>
+
+</menu>
\ No newline at end of file
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml
index 5b6cbb8c42d..74833105a41 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml
@@ -151,6 +151,9 @@
     <string name="menuitem_title_reset">Reset</string>
     <string name="menuitem_title_rotate_gesture_enabled">Enable rotate gestures</string>
     <string name="menuitem_title_scroll_gesture_enabled">Enable scroll gestures</string>
+    <string name="menuitem_title_change_location_source_lost">Change to LOST location source</string>
+    <string name="menuitem_title_change_location_source_mock">Change to mock location source</string>
+    <string name="menuitem_title_change_location_source_null">Reset location source to null</string>
 
     <!--Button-->
     <string name="button_camera_move">Move</string>
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/test/java/com/mapbox/mapboxsdk/MapboxTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/test/java/com/mapbox/mapboxsdk/MapboxTest.java
index 6ee5c157b99..e05190cd57a 100644
--- a/platform/android/MapboxGLAndroidSDKTestApp/src/test/java/com/mapbox/mapboxsdk/MapboxTest.java
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/test/java/com/mapbox/mapboxsdk/MapboxTest.java
@@ -5,6 +5,7 @@
 import android.net.NetworkInfo;
 
 import com.mapbox.mapboxsdk.exceptions.MapboxConfigurationException;
+import com.mapbox.mapboxsdk.location.LocationSource;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -24,11 +25,13 @@ public class MapboxTest {
 
   private Context context;
   private Context appContext;
+  private LocationSource locationSource;
 
   @Before
   public void before() {
     context = mock(Context.class);
     appContext = mock(Context.class);
+    locationSource = mock(LocationSource.class);
     when(context.getApplicationContext()).thenReturn(appContext);
   }
 
@@ -80,7 +83,7 @@ public void testConnected() {
   }
 
   private void injectMapboxSingleton(String accessToken) {
-    Mapbox mapbox = new Mapbox(appContext, accessToken);
+    Mapbox mapbox = new Mapbox(appContext, accessToken, locationSource);
     try {
       Field field = Mapbox.class.getDeclaredField("INSTANCE");
       field.setAccessible(true);
diff --git a/platform/android/dependencies.gradle b/platform/android/dependencies.gradle
index 5e80e344e4e..e71e0771046 100644
--- a/platform/android/dependencies.gradle
+++ b/platform/android/dependencies.gradle
@@ -21,8 +21,8 @@ ext {
             mapboxAndroidTelemetry : "com.mapbox.mapboxsdk:mapbox-android-telemetry:${mapboxServicesVersion}@aar",
 
             // mapzen lost
-            lost                   : 'com.mapzen.android:lost:3.0.0',
-
+            lost                   : 'com.mapzen.android:lost:3.0.1-20170607.212149-4',
+            
             // unit test
             junit                  : 'junit:junit:4.12',
             mockito                : 'org.mockito:mockito-core:2.2.27',