[android] Call callback.onFinish() when camera is already at the correct position

[android] Call callback.onFinish() when camera is already at the correct position

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/Transform.java

@@ -120,6 +120,8 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
           }
         }
       });
+    } else if (callback != null) {
+      callback.onFinish();
     }
   }
 
@@ -137,6 +139,8 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
       mapView.addOnCameraDidChangeListener(this);
       nativeMap.easeTo(cameraPosition.target, cameraPosition.zoom, cameraPosition.bearing, cameraPosition.tilt,
         cameraPosition.padding, durationMs, easingInterpolator);
+    } else if (callback != null) {
+      callback.onFinish();
     }
   }
 
@@ -157,6 +161,8 @@ public final class Transform implements MapView.OnCameraDidChangeListener {
       mapView.addOnCameraDidChangeListener(this);
       nativeMap.flyTo(cameraPosition.target, cameraPosition.zoom, cameraPosition.bearing,
         cameraPosition.tilt, cameraPosition.padding, durationMs);
+    } else if (callback != null) {
+      callback.onFinish();
     }
   }