Image feed size

[rafalucodev]

Hi, I 'm working with this library and the truth is that it works pretty well. I am posting on the Facebook wall without any problem ( with the administrator account until facebook me permission publish_actions ) . The problem I have is that when I publish a photo through my application , the image displayed on the wall of facebook has another size , is short by some sites , but when you click on the publication 's fine. How could fix this, to make the image appear correctly on the facebook wall ? Thank you.

This is original image upload to the wall

and this is the image displayed in the application facebook android on the wall