[ios] Avoid adding icon when relocating annotation

Fixed an issue that caused a default annotation icon to appear beneath an annotation view when relocating the annotation.

1 files changed, 10 insertions, 2 deletions

diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
index b05c5e41d4..74e2f1e73e 100644
--- a/platform/ios/src/MGLMapView.mm
+++ b/platform/ios/src/MGLMapView.mm
@@ -1779,8 +1779,16 @@ mbgl::Duration MGLDurationInSeconds(NSTimeInterval duration)
         if (annotation == [self annotationWithTag:annotationTag])
         {
             const mbgl::Point<double> point = MGLPointFromLocationCoordinate2D(annotation.coordinate);
-            MGLAnnotationImage *annotationImage = [self imageOfAnnotationWithTag:annotationTag];
-            _mbglMap->updateAnnotation(annotationTag, mbgl::SymbolAnnotation { point, annotationImage.styleIconIdentifier.UTF8String ?: "" });
+            
+            MGLAnnotationContext &annotationContext = _annotationContextsByAnnotationTag.at(annotationTag);
+            NSString *symbolName;
+            if (!annotationContext.annotationView)
+            {
+                MGLAnnotationImage *annotationImage = [self imageOfAnnotationWithTag:annotationTag];
+                symbolName = annotationImage.styleIconIdentifier;
+            }
+            
+            _mbglMap->updateAnnotation(annotationTag, mbgl::SymbolAnnotation { point, symbolName.UTF8String ?: "" });
             if (annotationTag == _selectedAnnotationTag)
             {
                 [self deselectAnnotation:annotation animated:YES];