Android Question Images in the app lose their original resolution


Hello, I have started learning b4a just a month ago, and I already have a problem and I can't do anything about it. I don't know if this is a noob question, but how do you put an image in the background of a layout, or in an imageview, without having any change in its resolution? I am trying to put a 1280×720 image, but it seems bad when I open it in my phone. Can anyone help please?