Universal Image Loader: Can I use cache but also refresh it?

Question

I\'m loading dynamically generated images so I always want them to be up to date. But they take time to load so I also want to display a cached version while the updated one

Answer 1

You can use the ImageLoadingListener. This interface has 4 methods to override: onLoadingStarted,onLoadingFailed,onLoadingComplete,onLoadingCancelled. In onLoadingStarted you can make the image the cached one, then on completed you change it.

So the call would look like this:

imgLoader.displayImage(url, myImageView,new ImageLoadingListener() 
{

        @Override
        public void onLoadingStarted(String arg0, View arg1) {
            //Display cached image if it exists

        }

        @Override
        public void onLoadingFailed(String arg0, View arg1, FailReason arg2) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onLoadingComplete(String arg0, View arg1, Bitmap arg2)
        {

            ((ImageView)arg1).setBitmapImage(arg2);
        }

        @Override
        public void onLoadingCancelled(String arg0, View arg1) {
            // TODO Auto-generated method stub

        }
});