Ricardo Ricardo - 1 month ago 30
Android Question

How to disable android map marker click auto center when using clustering?

I know I can avoid centering the camera when tapping a marker using:

mGoogleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
marker.showInfoWindow();
return true;
}
});


However, the problem I have is that now I want to use the clustering, and of course I want to see the info window when marker (actually, item or cluster) is taped. But I have no idea about how to call something like showInfoWindow in those cases.
In this code, if I return false, I see the info window but map is centered. If I return true, map is not centered but info window is not shown:

mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<HotspotMarker>() {
@Override
public boolean onClusterItemClick(HotspotMarker item) {
Log.e(LOG_TAG, "---OnClusterItemClick");
return false;
}
});

mClusterManager.setOnClusterItemInfoWindowClickListener(new ClusterManager.OnClusterItemInfoWindowClickListener<HotspotMarker>() {
@Override
public void onClusterItemInfoWindowClick(HotspotMarker hotspotMarker) {
Log.e(LOG_TAG, "---onClusterItemInfoWindowClick");
HotspotDetailActivity.hotspot = hotspotMarker.getHotspot();
Intent intent = new Intent(getActivity(), HotspotDetailActivity.class);
startActivity(intent);
}
});

mClusterManager.setOnClusterClickListener(new ClusterManager.OnClusterClickListener<HotspotMarker>() {
@Override
public boolean onClusterClick(Cluster<HotspotMarker> cluster) {
Log.e(LOG_TAG, "---OnClusterClickListener");
return false;
}
});

mClusterManager.setOnClusterInfoWindowClickListener(new ClusterManager.OnClusterInfoWindowClickListener<HotspotMarker>() {
@Override
public void onClusterInfoWindowClick(Cluster<HotspotMarker> cluster) {
Log.e(LOG_TAG, "---onClusterInfoWindowClick");
ArrayList<HotspotMarker> markers = new ArrayList<>(cluster.getItems());
ClusterListActivity.markers = markers;
Intent detailHotspot = new Intent(getActivity(), ClusterListActivity.class);
startActivity(detailHotspot);
}
});


Do you have any idea about how can I avoid centering the map when I use clustering and at the same time the info window is shown? Thanks in advance.

EDIT:
Using @skywall suggestion, I found even a better way using the custom renderer:

mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<HotspotMarker>() {
@Override
public boolean onClusterItemClick(HotspotMarker item) {
Marker marker=mClusteringRenderer.getMarker(item);
marker.showInfoWindow();
return true;
}
});

mClusterManager.setOnClusterItemInfoWindowClickListener(new ClusterManager.OnClusterItemInfoWindowClickListener<HotspotMarker>() {
@Override
public void onClusterItemInfoWindowClick(HotspotMarker hotspotMarker) {
HotspotDetailActivity.hotspot = hotspotMarker.getHotspot();
Intent intent = new Intent(getActivity(), HotspotDetailActivity.class);
startActivity(intent);
}
});

mClusterManager.setOnClusterClickListener(new ClusterManager.OnClusterClickListener<HotspotMarker>() {
@Override
public boolean onClusterClick(Cluster<HotspotMarker> cluster) {
Marker marker=mClusteringRenderer.getMarker(cluster);
marker.showInfoWindow();
return true;
}
});

mClusterManager.setOnClusterInfoWindowClickListener(new ClusterManager.OnClusterInfoWindowClickListener<HotspotMarker>() {
@Override
public void onClusterInfoWindowClick(Cluster<HotspotMarker> cluster) {
ArrayList<HotspotMarker> markers = new ArrayList<>(cluster.getItems());
ClusterListActivity.markers = markers;
Intent detailHotspot = new Intent(getActivity(), ClusterListActivity.class);
startActivity(detailHotspot);
}
});

Answer

Do not set new instance of GoogleMap.OnMarkerClickListener() directly through mGoogleMap.setOnMarkerClickListener().

Instead, set mClusterManager as click handler like this:

mGoogleMap.setOnMarkerClickListener(mClusterManager);

and handle clicks in:

mClusterManager.setOnClusterItemClickListener();
mClusterManager.setOnClusterClickListener();

InfoWindow is by default shown on first tap.

EDIT: I now understand, where the problem is. I've created not really beautiful solution, but it works. Modify your click listeners this way:

mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<MyClusterItem>() {
        @Override
        public boolean onClusterItemClick(MyClusterItem item) {
            for (Marker marker : mClusterManager.getMarkerCollection().getMarkers()) {
                if (marker.getPosition().latitude == item.getPosition().latitude && 
                    marker.getPosition().longitude == item.getPosition().longitude) {
                    marker.showInfoWindow();
                }
            }
            return true;
        }
    });
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