how to change the marker on OnItemSelected Listener of gallery in android

I am trying to change the marker on OnItemSelected Listener if gallery.Actually i have a gallery showing list of items and a map showing marker of the respected items in gallery .i want to change the marker ( from blue to orange ) when i select an item from the gallery .how can i do it.i have done changing marker on tapping it by the code in this link

http://www.google.com/url?q=http%3A%2F%2Fstackoverflow.com%2Fquestions%2F7038636%2Fhow-to-change-the-marker-for-the-overlay-on-tap-for-android&sa=D&sntz=1&usg=AFQjCNFOnFJHf-f0nTea-a3Rs5hpx4U1IQ ,but not getting how can i do the same with onItemSelected Listener.please suggest some ways.

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