Migrated explore/map and explore/depictions to Kotlin

app/src/main/java/fr/free/nrw/commons/contributions/ContributionsFragment.kt

@@ -696,12 +696,12 @@ class ContributionsFragment : CommonsDaggerSupportFragment(), FragmentManager.On
         }
     }
 
-    override fun onLocationChangedSignificantly(latLng: LatLng) {
+    override fun onLocationChangedSignificantly(latLng: LatLng?) {
         // Will be called if location changed more than 1000 meter
         updateClosestNearbyCardViewInfo()
     }
 
-    override fun onLocationChangedSlightly(latLng: LatLng) {
+    override fun onLocationChangedSlightly(latLng: LatLng?) {
         /* Update closest nearby notification card onLocationChangedSlightly
          */
         try {
@@ -711,7 +711,7 @@ class ContributionsFragment : CommonsDaggerSupportFragment(), FragmentManager.On
         }
     }
 
-    override fun onLocationChangedMedium(latLng: LatLng) {
+    override fun onLocationChangedMedium(latLng: LatLng?) {
         // Update closest nearby card view if location changed more than 500 meters
         updateClosestNearbyCardViewInfo()
     }

app/src/main/java/fr/free/nrw/commons/explore/ExploreMapRootFragment.java

@@ -144,8 +144,8 @@ public void onMediaClicked(int position) {
      */
     @Override
     public Media getMediaAtPosition(int i) {
-        if (mapFragment != null && mapFragment.mediaList != null) {
-            return mapFragment.mediaList.get(i);
+        if (mapFragment != null && mapFragment.getMediaList() != null) {
+            return mapFragment.getMediaList().get(i);
         } else {
             return null;
         }
@@ -159,8 +159,8 @@ public Media getMediaAtPosition(int i) {
      */
     @Override
     public int getTotalMediaCount() {
-        if (mapFragment != null && mapFragment.mediaList != null) {
-            return mapFragment.mediaList.size();
+        if (mapFragment != null && mapFragment.getMediaList() != null) {
+            return mapFragment.getMediaList().size();
         } else {
             return 0;
         }