title: How to destroy Fragment?
body: <p>I have one <code>Activity</code>. The <code>Activity</code> has two <code>Fragment</code>s.
  Fragment A is Menu. Fragment B is Detail.</p>
  
  <p>I try to Make other Fragment C in Fragment B, so, There are 3 Fragment in the <code>Activity</code>.
  And I try to Replace Fragment B to Fragment D.</p>
  
  <p>I guess Fragment B and C is dead.
  BUT these Fragments is alive. Just Fragments are <code>onDestroyView()</code> state. I want <code>onDestroy()</code> or <code>onDetach()</code>.</p>
  
  <p>What do I do for <code>Fragments.onDestroy()</code> or <code>onDetach()</code>? I can't destroy or change the <code>Activity</code>.</p>