Implement new bearingTrackingMode GPS_NORTH_FACING

2 files changed, 24 insertions, 6 deletions

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MyBearingTracking.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MyBearingTracking.java
index ceac862f39..c042b00577 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MyBearingTracking.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/constants/MyBearingTracking.java
@@ -22,7 +22,7 @@ import java.lang.annotation.RetentionPolicy;
  */
 public class MyBearingTracking {
 
-  @IntDef( {NONE, COMPASS, GPS})
+  @IntDef( {NONE, COMPASS, GPS, GPS_NORTH_FACING})
   @Retention(RetentionPolicy.SOURCE)
   public @interface Mode {
   }
@@ -42,4 +42,9 @@ public class MyBearingTracking {
    */
   public static final int GPS = 0x00000008;
 
+  /**
+   * Tracking the bearing of the user based on GPS data, but camera always faces north direction
+   */
+  public static final int GPS_NORTH_FACING = 0x0000000B;
+
 }
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 4f27e0ada8..1cdd91028d 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
@@ -356,7 +356,9 @@ public class MyLocationView extends View {
         foregroundDrawable.draw(canvas);
       }
     } else if (foregroundBearingDrawable != null && foregroundBounds != null) {
-      if (myBearingTrackingMode == MyBearingTracking.GPS || compassListener.isSensorAvailable()) {
+      if (myBearingTrackingMode == MyBearingTracking.GPS
+        || myBearingTrackingMode == MyBearingTracking.GPS_NORTH_FACING
+        || compassListener.isSensorAvailable()) {
         foregroundBearingDrawable.draw(canvas);
       } else {
         // We are tracking MyBearingTracking.COMPASS, but sensor is not available.
@@ -383,7 +385,8 @@ public class MyLocationView extends View {
   public void setBearing(double bearing) {
     this.bearing = bearing;
     if (myLocationTrackingMode == MyLocationTracking.TRACKING_NONE) {
-      if (myBearingTrackingMode == MyBearingTracking.GPS) {
+      if (myBearingTrackingMode == MyBearingTracking.GPS
+        || myBearingTrackingMode == MyBearingTracking.GPS_NORTH_FACING) {
         if (location != null) {
           setCompass(location.getBearing() - bearing);
         }
@@ -519,7 +522,8 @@ public class MyLocationView extends View {
   }
 
   private void toggleGps(boolean enableGps) {
-    toggleGps(enableGps, mapboxMap != null && mapboxMap.getTrackingSettings().isCustomLocationSource());
+    toggleGps(enableGps, mapboxMap != null
+      && mapboxMap.getTrackingSettings().isCustomLocationSource());
   }
 
   /**
@@ -580,7 +584,8 @@ public class MyLocationView extends View {
     this.location = location;
     myLocationBehavior.updateLatLng(location);
 
-    if (mapboxMap != null && myBearingTrackingMode == MyBearingTracking.GPS
+    if (mapboxMap != null && (myBearingTrackingMode == MyBearingTracking.GPS
+      || myBearingTrackingMode == MyBearingTracking.GPS_NORTH_FACING)
       && myLocationTrackingMode == MyLocationTracking.TRACKING_NONE) {
       setBearing(mapboxMap.getCameraPosition().bearing);
     }
@@ -616,7 +621,8 @@ public class MyLocationView extends View {
       compassListener.onResume();
     } else {
       compassListener.onPause();
-      if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW) {
+      if (myLocationTrackingMode == MyLocationTracking.TRACKING_FOLLOW
+        && myBearingTrackingMode == MyBearingTracking.GPS) {
         // always face north
         setCompass(0);
       } else {
@@ -1017,6 +1023,13 @@ public class MyLocationView extends View {
         setCompass(0, COMPASS_UPDATE_RATE_MS);
       }
 
+      if (myBearingTrackingMode == MyBearingTracking.GPS_NORTH_FACING) {
+        builder.bearing(0);
+        if (location.hasBearing()) {
+          setCompass(location.getBearing(), COMPASS_UPDATE_RATE_MS);
+        }
+      }
+
       // accuracy
       updateAccuracy(location);