From 73b7fc47e1b57c50ed65fa916823e04209d71fd3 Mon Sep 17 00:00:00 2001
From: kevin <kevin.li@mapbox.com>
Date: Wed, 3 Jul 2019 17:57:04 +0800
Subject: Add getShiftedTarget method for CameraPosition

---
 .../mapbox/mapboxsdk/camera/CameraPosition.java    | 29 ++++++++++++++--------
 .../java/com/mapbox/mapboxsdk/maps/Transform.java  |  9 ++++---
 2 files changed, 23 insertions(+), 15 deletions(-)

diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/camera/CameraPosition.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/camera/CameraPosition.java
index ad6e2a0638..1326983753 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/camera/CameraPosition.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/camera/CameraPosition.java
@@ -86,6 +86,24 @@ public final class CameraPosition implements Parcelable {
     this.zoom = zoom;
   }
 
+  /**
+   * Do shift for target location and get the shifted target.
+   *
+   * @return the shifted target.
+   */
+  public LatLng getShiftedTarget() {
+    if (target != null) {
+      //todo: add check after https://github.com/mapbox/mapbox-java/issues/1057 is resolved.
+      List<Double> shifted = CoordinateShifterManager.getCoordinateShifter()
+        .shiftLonLat(target.getLongitude(), target.getLatitude());
+      if (shifted != null && shifted.size() > 1) {
+        return new LatLng(shifted.get(1),shifted.get(0));
+      }
+    }
+    return new LatLng();
+
+  }
+
   /**
    * Describe the kinds of special objects contained in this Parcelable's
    * marshalled representation.
@@ -172,7 +190,6 @@ public final class CameraPosition implements Parcelable {
    * Builder for composing CameraPosition objects.
    */
   public static final class Builder {
-    private boolean needShift = false;
     private double bearing = -1;
     @Nullable
     private LatLng target = null;
@@ -274,7 +291,6 @@ public final class CameraPosition implements Parcelable {
      */
     @NonNull
     public Builder target(LatLng location) {
-      needShift = true;
       this.target = location;
       return this;
     }
@@ -317,15 +333,6 @@ public final class CameraPosition implements Parcelable {
      * @return CameraPosition
      */
     public CameraPosition build() {
-      if (needShift && target != null) {
-        //todo: add check after https://github.com/mapbox/mapbox-java/issues/1057 is resolved.
-        List<Double> shifted = CoordinateShifterManager.getCoordinateShifter()
-          .shiftLonLat(target.getLongitude(), target.getLatitude());
-        if (shifted != null && shifted.size() > 1) {
-          target.setLongitude(shifted.get(0));
-          target.setLatitude(shifted.get(1));
-        }
-      }
       return new CameraPosition(this.target, zoom, tilt, bearing);
     }
   }
diff --git a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/Transform.java b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/Transform.java
index 1961cf0450..d58a4a2f79 100644
--- a/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/Transform.java
+++ b/platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/Transform.java
@@ -108,7 +108,8 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
     if (isValidCameraPosition(cameraPosition)) {
       cancelTransitions();
       cameraChangeDispatcher.onCameraMoveStarted(OnCameraMoveStartedListener.REASON_API_ANIMATION);
-      nativeMap.jumpTo(cameraPosition.target, cameraPosition.zoom, cameraPosition.tilt, cameraPosition.bearing);
+      nativeMap.jumpTo(cameraPosition.getShiftedTarget(), cameraPosition.zoom, cameraPosition.tilt,
+        cameraPosition.bearing);
       cameraChangeDispatcher.onCameraIdle();
       invalidateCameraPosition();
       handler.post(new Runnable() {
@@ -134,8 +135,8 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
         cameraCancelableCallback = callback;
       }
       mapView.addOnCameraDidChangeListener(this);
-      nativeMap.easeTo(cameraPosition.target, cameraPosition.zoom, cameraPosition.bearing, cameraPosition.tilt,
-        durationMs, easingInterpolator);
+      nativeMap.easeTo(cameraPosition.getShiftedTarget(), cameraPosition.zoom, cameraPosition.bearing,
+        cameraPosition.tilt, durationMs, easingInterpolator);
     }
   }
 
@@ -154,7 +155,7 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
         cameraCancelableCallback = callback;
       }
       mapView.addOnCameraDidChangeListener(this);
-      nativeMap.flyTo(cameraPosition.target, cameraPosition.zoom, cameraPosition.bearing,
+      nativeMap.flyTo(cameraPosition.getShiftedTarget(), cameraPosition.zoom, cameraPosition.bearing,
         cameraPosition.tilt, durationMs);
     }
   }
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