title: How to programatically remove a layout behavior of my NestedScrollView?
body: <p>I already achieved the removal of <code>layout_scrollFlags</code> in my<code>CollapsingToolbarLayout</code>. but I need to remove the the <code>layout_behavior</code> of my <code>NestedScrollView</code> so that when there is no contents on my  the nested scroll view, the collapsing of the toolbar will be disabled too. Removing the layout_behavior of my NestedScrollView is very easy, just I remove the line of code in your xml literally but how can I remove it programatically?</p>
  
  <p>my xml:</p>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout
              xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:app="http://schemas.android.com/apk/res-auto"
  
              android:layout_width="match_parent"
              android:layout_height="match_parent"&gt;
  
              &lt;android.support.design.widget.AppBarLayout
                  android:id="@+id/appbar"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  android:fitsSystemWindows="true"
                  android:background="@android:color/white"&gt;
  
                  &lt;android.support.design.widget.CollapsingToolbarLayout
                      android:id="@+id/collapsing_toolbar"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"
                      android:fitsSystemWindows="true"
                      app:contentScrim="?attr/colorPrimary"
                      app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;
  
                      &lt;fragment
                          android:id="@+id/pawfile_header"
                          android:name="com.lightbulb.pawesome.fragments.PawfileHeaderFragment"
                          android:layout_width="match_parent"
                          android:layout_height="wrap_content"
                          android:layout_marginLeft="10dp"
                          android:layout_marginTop="10dp"
                          android:fitsSystemWindows="true"
                          app:layout_collapseMode="parallax" /&gt;
  
                  &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
              &lt;/android.support.design.widget.AppBarLayout&gt;
  
              &lt;fragment
                  android:id="@+id/pawfile_timeline"
                  android:name="com.lightbulb.pawesome.user_timeline.PawesomeUserTimelineFragment"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  app:layout_behavior="@string/appbar_scrolling_view_behavior" /&gt;
  
          &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>