title: How to scroll Recyclerview inside CollapsingToolbarLayout
body: <p>I have recyclerview inside CollapsingToolbarLayout and I want it to be scrollable, but it is not. When I scroll, appbar is scrolling but not recyclerview. I tried different things, but it doesn't work. Here's my code:</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:id="@+id/caves_content"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/appBar"
          android:layout_width="match_parent"
          android:layout_height="@dimen/app_bar_height"
          android:theme="@style/AppTheme.AppBarOverlay"
          android:fitsSystemWindows="true"&gt;
  
          &lt;android.support.design.widget.CollapsingToolbarLayout
              android:id="@+id/collapse"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:fitsSystemWindows="true"
              app:layout_scrollFlags="scroll"
              android:nestedScrollingEnabled="true"
              app:titleEnabled="false"&gt;
  
              &lt;ImageView
                  android:id="@+id/caves_backdrop"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:fitsSystemWindows="true"
                  android:background="@mipmap/mount"
                  android:adjustViewBounds="true"
                  android:scaleType="centerCrop" /&gt;
  
  
  
              &lt;android.support.v7.widget.RecyclerView
                  android:id="@+id/recycler"
                  android:layout_width="match_parent"
                  android:layout_height="200dp"/&gt;
  
              &lt;android.support.v7.widget.Toolbar
                  android:id="@+id/toolbar"
                  app:theme="@style/WhiteToolbarStyle"
                  android:layout_width="match_parent"
                  android:layout_height="?attr/actionBarSize"
                  app:layout_collapseMode="none" /&gt;
  
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
      &lt;android.support.v4.widget.NestedScrollView
          android:id="@+id/nested"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
  
          &lt;include layout="@layout/content"/&gt;
  
      &lt;/android.support.v4.widget.NestedScrollView&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>