title: Move views up when SnackBar appears in CoordinatorLayout
body: <p>I have a <code>TextView</code> at the bottom of the <code>CoordinatorLayout</code>.</p>
  
  <p>But when I show a <code>SnackBar</code> , it will cover the <code>TextView</code>.</p>
  
  <p>I know I have to customize a <code>Behavior</code> for the <code>TextView</code> and override <code>layoutDependsOn</code> and <code>onDependentViewChanged</code>,but it doesn't fix very well. </p>
  
  <p>Could you give me some advice if you know? Thanks.</p>