How to retrive Image data from Image view in android

I have two Image view I have to compare them. I don't know on which format I have to take them.I want to retrieve Image 开发者_Go百科Data.

Here you are :)

imageView.getDrawable();

Then just compare two Drawables from both :)

(not sure but) i think first you need to store in drawable data type and and convert it in to Blob or String then you can compare