title: Downloading images only once from different urls and storing in sdcard in android
body: <p>I have a requirement where I need to parse the  tag in a response xml, store it in sdcard and retrieve every time I need to use it. </p>
  
  <p>I want to download only once just like Whatsapp and store in sdcard. So that next time, I scan the sdcard first and then download if necessary, I tried the lazylist program but it just downloads and loads the list directly.</p>
  
  <p>NOTE : Each image I am getting from different URL. I am parsing it and am saving it in an array. How do I save the images from different urls in sdcard and download only once</p>