title: Snackbar lookalike (in app notifications) for activities not using appcompat-v7
body: <p>I want to show in app notifications (not a dialog, but a light weight in app notification), <br>
  It should also have button similar to what hangouts does:
  <a href="https://i.stack.imgur.com/YLoPd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YLoPd.png" alt="enter image description here"></a></p>
  
  <p>I cannot use snackbar given that activities in my app <strong>do not use</strong> appcompat-v7: <a href="https://stackoverflow.com/questions/41526839/snackbar-on-android-without-changing-theme/41526899#41526899">Snackbar on Android without changing theme</a>,
  Is there a way to implement the above feature <strong>without</strong> using external libraries like TSnackbar, etc. <br>
  Is fragment a good idea?</p>
  
  <p>Thanks in advance.</p>