snackbar example
Example 1: android create snackbar
Snackbar.make(fragmentView, text, Snackbar.LENGTH_LONG).setAction("Action", null /* replace with your action or leave null to just display text*/).show();
Example 2: android snackbar message is behind back button
FloatingActionButton fab = findViewById(R.id.fab);
Snackbar snackbar = Snackbar.make(view, "Snackbar over BottomAppBar", Snackbar.LENGTH_LONG);
snackbar.setAnchorView(fab);