Fix review comments

CHANGELOG.md

@@ -8,6 +8,12 @@
 
   Fixes possible crashes when using styles with line patterns.
 
+- [android] Update toGeoJSON in android_conversion.hpp [#16243](https://github.com/mapbox/mapbox-gl-native/pull/16243)
+
+  Before this chage, `toGeoJSON` method in `android_conversion.hpp` can't convert Object(Map in android) to GeoJSON object. 
+
+  But `within` expression need to accept an Object and then convert to GeoJSON object, now `toGeoJSON` method can convert both string and Object to GeoJSON.
+
 ## maps-v1.3.0 (2020.02-relvanillashake)
 
 ### 🐞 Bug fixes

platform/android/src/style/android_conversion.hpp

@@ -113,16 +113,24 @@ class ConversionTraits<mbgl::android::Value> {
         if (value.isNull()) {
             error = { "no json data found" };
             return {};
-        } else if (value.isString()) {
+        }
+
+        if (value.isString()) {
             return parseGeoJSON(value.toString(), error);
-        } else if (value.isObject()) {
+        }
+
+        if (value.isObject()) {
             mbgl::android::Value keys = value.keyArray();
             std::size_t length = arrayLength(keys);
             for (std::size_t i = 0; i < length; ++i) {
                 const auto k = keys.get(i).toString();
                 if (k == "json") {
-                    auto v = value.get(k.c_str());
-                    return parseGeoJSON(v.toString(), error);
+                    auto v = value.get("json");
+                    if (v.isString()) {
+                        return parseGeoJSON(v.toString(), error);
+                    } else {
+                        break;
+                    }
                 }
             }
         }