After struggling a bit, I found out it was very simple.

First, we need to make our round corner background, so let’s add this to our /res/drawable folder:

Great! Now that we have our background, we will need to make some changes in the default snackbar, so it looks exactly as we want it to. I made an helper class to configure all we need. Take a look:

Tip: if you’re using Kotlin, you can create an extension instead of the helper class, like this:

And that’s it! We are ready to use your new Snackbar. Just call it like this in your Activity:

This is what you’ll get: