title: Picasso - how to get the real image size?
body: <p>I load an image from URLusing Picasso library. I want to get the real image size, but I can only get the image size in memory:</p>
  
  <pre><code>Picasso.with(this)
      .load(imageUrl)
      .error(R.drawable.no_image)
      .into(photoView, new Callback() {
          @Override
          public void onSuccess() {
              Bitmap bitmap = ((BitmapDrawable)photoView.getDrawable()).getBitmap();
              textImageDetail.setText(bitmap.getByteCount());// image size on memory, not actual size of the file
          }
  
          @Override
          public void onError() { }
      });
  </code></pre>
  
  <p>How to get the size of the loaded image? I think it is stored somewhere in a cache, but I do not know how to access the image file.</p>
  
  <p><strong>Update</strong></p>
  
  <p>Sorry for my bad English, maybe I asked the wrong question. I need to get the image size (128 kb, 2 MB, etc.). <strong>NOT</strong> the image resolution (800x600, etc.)</p>