title: Activity to behave as bottomsheet
body: <p>I am implementing bottom sheet behavior in an activity. I don't want to implement the bottom sheet, instead I want my activity to behave as bottomsheet.<br><br>
  There are articles which is saying to set theme in manifest file, but it is not working same as bottomsheet.<br><br>
  I also want the slide down feature and when I touch outside activity to be hidden.
  Any help would be appreciated.</p>