If you don't want to blink the background of an ImageView (only blink the source image) or you just don't want to write any of that code yourself - which is exactly what I was trying to avoid - then you'll have to create a custom View and do it internally.
Sure, there is a workaround with a parent FrameLayout, but let's not create more hierarchy when there is no real need. :)
Anyway, I actually wrote a Blinker View
because I was in need of such behavior, and you're free to use it from here: https://github.com/milosmns/blinking-image-view
Happy coding!