Create a drawable from a created imageview

I'm trying to create a drawable from an ImageView I know that we can do that with getre开发者_开发知识库ssources :

Drawable drawable = getResources().getDrawable(imageview.getId());

But my imageview is created programmatically, I can not get the ID even with the getID() method.

if you can access to the ImageView you cam simply call getDrawable() to get its drawable