Android : Error while downloading images using Picasso in Android application

I am using Picasso for downloading images in my android application. But for some reason my code always downloads only the first image.

Here is my code:

public void setAddresses(String addressesAsString) {
        String[] addresses = addressesAsString.split("\n");
        addresses[0] = "http://perec.info/wp-content/uploads/perecinfo-panda-1.jpg";
        addresses[1] = "http://bessarabiainform.com/wp-content/uploads/2014/10/dinamo_kiev_1680x1050_5693-300x187.jpg";
        uris = new Uri[addresses.length];
        for (int i = 0; i < addresses.length; ++i) {
            uris[i] = Uri.parse(addresses[i]);
        }
    }

public void downloadAllImages() {
        totalDownloaded = 0;
        for (Uri uri : uris) {
            Target target = new Target() {

                @Override
                public void onPrepareLoad(Drawable arg0) {
                    // TODO Auto-generated method stub

                }

                @Override
                public void onBitmapLoaded(Bitmap arg0, LoadedFrom arg1) {
                    // TODO Auto-generated method stub
                    processDownloadedImage();
                }

                @Override
                public void onBitmapFailed(Drawable arg0) {
                    // TODO Auto-generated method stub
                    processDownloadedImage();
                }

                void processDownloadedImage() {
                    totalDownloaded++;
                    Log.i("Downloaded", "" + totalDownloaded);
                    if (totalDownloaded == uris.length) {
                        context.onDownloadingComplete();
                    }
                }
            };
            Picasso.with(context).load(uri).resize(50, 50).into(target);
        }
}

Any ideas why is this happening?