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POAndroid GoogleMaps V2 maker object reference lost
 

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  1. POAndroid GoogleMaps V2 maker object reference lost
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    <p>I´m developing an app that uses Google Maps V2. When the map fragment it´s loaded and the markers are painted, I´ve got a button on the action bar that calls another activity for results that will act as a place finder.</p> <p>On this activity result, I search on my <code>mMarkers</code> which is a <code>HashMap&lt;Long, Marker&gt;</code> like this:</p> <pre><code>if (mMarkers.containsKey(place.id)) { mMarkers.get(place.id).showInfoWindow(); mMap.animateCamera(CameraUpdateFactory.newCameraPosition(updateCamera(new LatLng(place.lat, place.lng)))); } else { Marker marker = mMap.addMarker( new MarkerOptions() .position(markerPos) .title(place.name) ); marker.showInfoWindow(); mMarkers.put(place.id, marker); // if it´s not on the map I put it mMap.animateCamera(CameraUpdateFactory.newCameraPosition(updateCamera(new LatLng(place.lat, place.lng)))); } </code></pre> <p>I show the markers infoWindow because I´ve got a <code>onInfoWindowClick</code> implemented.</p> <p>Here comes the main problem. This is my <code>onInfoWindowClick</code> event:</p> <pre><code>@Override public void onInfoWindowClick(Marker marker) { Long placeId = null; if (mMarkers.containsValue(marker)) { Iterator&lt;Entry&lt;Long, Marker&gt;&gt; it = mMarkers.entrySet().iterator(); while (it.hasNext()) { Map.Entry&lt;Long, Marker&gt; pairs = (Map.Entry&lt;Long, Marker&gt;)it.next(); if (pairs.getValue().getId().equals(marker.getId())) { placeId = pairs.getKey(); } } if (placeId != null) { Intent intent = new Intent(mContext, PlaceActivity.class); intent.putExtra("placeId", placeId); startActivity(intent); } } } </code></pre> <p>When I check the <code>mMarkers.containsValue(marker)</code> the reference to the marker object it´s different from the one I´ve got on the same map on the above <code>onActivityResult</code> function.</p> <p>I´m not creating any new instance of that marker object so I don't really understand why it changes that reference.</p> <p><em><strong>--- UPDATE ---</em></strong></p> <p>I´ve tried without showing the infoWindow and it works perfect. Any ideas why this happens or any workaround to this?</p> <p>Lots of thanks in regard!!</p>
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    1. USaxierjhtjz
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    1. COHave you tried to make a simple loop to check if the Objects are equal or not ? I mean like this : `for (Marker m : mMarkers) if (dummyMarker.equals(m))`...
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      1. POAndroid GoogleMaps V2 maker object reference lost
      1. USSw4Tish
    2. CO@Sw4Tish I actually do it on the infoWindowClicked event. But it doesn't find it. Everything works when I don't call the showInfoWindow() method.
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      1. POAndroid GoogleMaps V2 maker object reference lost
      1. USaxierjhtjz
    3. COThe marker object passed in through the listener may not be the same instance as the one you created (https://developers.google.com/maps/documentation/android/marker#event_handling). You need to use `equals()` to check for equality of the markers.
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      1. POAndroid GoogleMaps V2 maker object reference lost
      1. USJason Hanley
 

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