[OpenLayers-Users] setOpacity does not work on google layers

[joaorodr84]

I am working on a GIS API that uses OpenLayers 2.13.

I also use the google layers: OpenLayers.Layer.Google.

The opacity options does not work with google layers.

I define my map and layers like this:

    map = new OpenLayers.Map('map', {
        allOverlays: false,
        autoUpdateSize: true,
        displayProjection: new OpenLayers.Projection('EPSG:4326'),
        numZoomLevels: 16,
        projection: new OpenLayers.Projection('EPSG:900913'),
        zoomMethod: null,
        units: 'km'
    });

    map.addControl(new OpenLayers.Control.LayerSwitcher());

    var osm = new OpenLayers.Layer.OSM();

    var google = new OpenLayers.Layer.Google('google', {
        map: map
    });

    map.addLayer(google);
    map.addLayer(osm);

    var center = new OpenLayers.LonLat(-0.125, 51.5);
    center.transform(new OpenLayers.Projection('EPSG:4326'), new
OpenLayers.Projection('EPSG:900913'));
    var zoomLevel = 4;
    map.setCenter(center, zoomLevel);

The setOpacity method works fine with the OSM layer:

    osm.setOpacity(0.5);

But when I do:

    google.setOpacity(0.5);

it does not work.

I have created a  CodePen <http://codepen.io/joaorodr84/pen/PqaEww>   to
easily show the problem I am facing.

Apparently, it is a common issue, because  I have read about it
<http://gis.stackexchange.com/questions/69637/google-base-layer-opacity-change-in-openlayers-2-13>
 
, but I have not found any solutions yet.

How can I make the setOpacity method work for google layers?

Thanks a lot.

João Rodrigues



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