Best way to update android Gallery View only when backend hosting server add's image
<p>I get the set of image Url's from back end service calls ,after parsing them, i download the images and display in a gallery view .I have written an Asynctask to get the response from the server in onCreate method ,my requirement is that whenever my server team add's an image in the service call, i need to update my gallery view ,otherwise i am not interested in doing an unnecessary network resource operation.How can i achieve this.    </p>
