Show Progress while downloading image from server into imageview

Question

I am ListView and would like to show progress, until image not downloaded from server into ImageView using Picasso library, still showing ic_launcher drawable while downloading image from server into ImageView, but what if i would like to show progress

    Picasso.with(context)
    .load(imageURL)
    .transform(transformation)
    .placeholder(R.drawable.ic_launcher)
    .error(R.drawable.ic_launcher)
    .into(viewHolder.imageView);

Answer 1

in your xml file you have to put progressbar above image, set visibility of progressbar visible and in your code

Picasso.with(context)
       .load(file)
       .into(imageView, new Callback() {
           @Override
           public void onSuccess() {
               progressbar.setVisibility(View.GONE);
           }
       });

when image is download you have to setVisibility(View.GONE) to progressbar