title: cannot resolve floatinbuttonAction and snackbar
body: <p>I'm very new to the android development. I imported my friend's project in my android studio and I'm having this trouble right now that I'm unable to sort out on my own. Please help me fix it.<a href="https://i.stack.imgur.com/LFU6S.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LFU6S.png" alt="can&#39;t resolve FloatingActionButn and Snackbar"></a> </p>