Show navigation button only when we have location

app/src/main/java/app/insti/fragment/EventFragment.java

@@ -187,6 +187,9 @@ public class EventFragment extends BackHandledFragment {
 
         setFollowButtonColors(event.getEventUserUes());
 
+        if (event.getEventVenues().get(0).getVenueLatitude() == 0) {
+            navigateButton.setVisibility(View.GONE);
+        } else {
             navigateButton.setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View v) {
@@ -197,6 +200,7 @@ public class EventFragment extends BackHandledFragment {
                     startActivity(mapIntent);
                 }
             });
+        }
 
         shareEventButton.setOnClickListener(new View.OnClickListener() {
             String shareUrl = ShareURLMaker.getEventURL(event);