title: Android RecyclerView with CollapsingToolbarLayout smooth scroll issue
body: <p>I want to use <code>CollapsingToolbarLayout</code>with <code>RecyclerView</code>, like <code>Whatsapp</code>.</p>
  
  <p>Here is the captured video : <a href="https://sendvid.com/0oi2lxx5" rel="nofollow">https://sendvid.com/0oi2lxx5</a></p>
  
  <p>So when I scroll up it's okay, but when I scroll down it's not smooth. I want to scroll it smoothly with <code>RecyclerView</code>.</p>
  
  <p>So here is my <code>profile_activity.xml</code>:</p>
  
  <pre><code>    &lt;?xml version="1.0" encoding="utf-8"?&gt;
      &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"
      android:fitsSystemWindows="true"&gt;
      &lt;android.support.v7.widget.RecyclerView
          android:layout_width="match_parent"
          android:id="@+id/profile_recyclerview"
          android:layout_height="match_parent"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"
          android:layout_below="@+id/profileactivity_appbar" /&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/profileactivity_appbar"
          android:layout_width="match_parent"
          android:layout_height="400dp"
          android:fitsSystemWindows="true"
          android:theme="@style/AppTheme3.AppBarOverlay"&gt;
  
          &lt;android.support.design.widget.CollapsingToolbarLayout
              android:id="@+id/profileactivity_collapsing_toolbar"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              app:layout_scrollFlags="scroll|exitUntilCollapsed"
              android:fitsSystemWindows="true"
              app:contentScrim="?attr/colorPrimary"
              app:expandedTitleMarginStart="48dp"
              app:expandedTitleMarginEnd="64dp"&gt;
  
              &lt;ImageView
                  android:id="@+id/profileactivity_fullimage"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:scaleType="centerCrop"
                  android:fitsSystemWindows="true"
                  app:layout_collapseMode="parallax"
                  app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed" /&gt;
  
              &lt;android.support.v7.widget.Toolbar
                  android:id="@+id/toolbar"
                  android:layout_width="match_parent"
                  android:layout_height="?attr/actionBarSize"
                  app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                  app:layout_collapseMode="pin" /&gt;
  
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
  
  
  
      &lt;android.support.design.widget.FloatingActionButton
          android:id="@+id/fab"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:layout_margin="@dimen/fab_margin"
          app:layout_anchor="@id/profileactivity_appbar"
          app:layout_anchorGravity="bottom|right|end"
          app:backgroundTint="@color/ColorPrimary"
          android:src="@drawable/ic_create_white_48dp"/&gt;
  
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>I am using:</p>
  
  <pre><code>compile 'com.android.support:appcompat-v7:23.4.0'
  compile 'com.android.support:support-v4:23.4.0'
  compile 'com.android.support:recyclerview-v7:23.4.0'
  compile 'com.android.support:design:23.4.0'
  </code></pre>
  
  <p>How can I fix this?</p>