title: Coordinator layout custom layout behavior never getting called
body: <p>Firstly, I'd like to preface this with my lack of knowledge about the coordinator layout. I'm merely following tutorials I found online and am curious why my behavior isn't working. </p>
  
  <p>Does the child view inside of coordinator layout have to be app bar layout?
  Or are you able to put any view inside there. </p>
  
  <p>Also, when I define the res-auto namespace it doesn't give me the option for layout_behavior. Usually android studio will auto-complete if a function is available and it didn't. Although, if I type out layout_behavior it doesn't complain. So maybe it's working...?</p>
  
  <p>Regardless, I've defined my own custom layout behavior and am trying to apply it but it doesn't seem to be working. Any insight would be greatly appreciated.</p>
  
  <p>Here is the layout. I'm trying to apply my custom behavior to the first LinearLayout (search_polls_toolbar) and have it scroll up when the vertical recyclerview scrolls up. (Like the toolbar currently does.)
  I should also mention, this xml is for a fragment in a viewpager. And the hosting activity has a coordinator layout attached to it that does make the toolbar scroll up. (Could it be conflicted because of that?) </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.design.widget.CoordinatorLayout
      android:id="@+id/root"
      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;RelativeLayout
      android:id="@+id/container"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical"
      &gt;
      &lt;LinearLayout
          android:id="@+id/search_polls_toolbar"
          android:layout_width="match_parent"
          android:layout_height="?android:actionBarSize"
          android:background="@color/icitizen_toolbar_orange"
          android:weightSum="1"
        app:layout_behavior="com.example.chrisjohnson.icitizenv2.CustomBehaviors.ToolbarBehavior"
          &gt;
  
          &lt;EditText
              android:id="@+id/search_polls"
              android:layout_width="0dp"
              android:layout_height="wrap_content"
              android:hint="@string/search_polls"
              android:gravity="center_horizontal"
              android:layout_weight=".5"
              android:drawableLeft="@drawable/magnifying_glass"
              android:drawableStart="@drawable/magnifying_glass"
              android:layout_marginTop="5dp"
              android:layout_marginLeft="15dp"
              android:drawablePadding="-50dp"
              android:paddingLeft="5dp"
              android:paddingTop="5dp"
              android:paddingBottom="10dp"
              android:cursorVisible="false"
              android:textSize="20sp"
              android:background="@color/icitizen_light_orange"
              /&gt;
  
      &lt;/LinearLayout&gt;
  
      &lt;android.support.v7.widget.RecyclerView
          android:id="@+id/poll_horizontal_recycler_view"
          android:layout_width="match_parent"
          android:layout_height="75dp"
          android:layout_below="@id/search_polls_toolbar"
          android:layout_marginLeft="10dp"
          android:layout_marginTop="5dp"
          android:scrollbars="none"
          &gt;
  
      &lt;/android.support.v7.widget.RecyclerView&gt;
  
      &lt;android.support.v7.widget.RecyclerView
          android:id="@+id/poll_recycler_view"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:layout_marginTop="10dp"
          android:layout_below="@id/poll_horizontal_recycler_view"
          app:layout_scrollFlags="scroll|enterAlways"
          android:scrollbars="vertical" /&gt;
  
  &lt;/RelativeLayout&gt;
  
  &lt;android.support.design.widget.FloatingActionButton
      android:id="@+id/polls_fab"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:src="@drawable/white_plus_icon"
      android:layout_marginBottom="70dp"
      app:backgroundTint="@color/icitizen_orange"
      app:layout_anchor="@id/container"
      app:layout_anchorGravity="bottom|right|end"
      app:borderWidth="0dp"
      android:layout_marginRight="15dp"
      android:layout_marginEnd="15dp"/&gt;
  </code></pre>
  
  <p></p>
  
  <p>And here's the custom behavior:</p>
  
  <pre><code>public class ToolbarBehavior extends CoordinatorLayout.Behavior&lt;Toolbar&gt; {
      public ToolbarBehavior(Context context, AttributeSet attrs) {
          super(context, attrs);
          Toast.makeText(context, "AJSJA", Toast.LENGTH_LONG).show();
      }
  
      @Override
      public boolean layoutDependsOn(CoordinatorLayout parent, Toolbar child, View dependency) {
          return dependency instanceof RecyclerView;
      }
  
      @Override
      public boolean onDependentViewChanged(CoordinatorLayout parent, Toolbar child, View dependency) {
          child.setTranslationY(child.getY());
          return true;
      }
  }
  </code></pre>
  
  <p>And here's the hosting activies' layout.</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:id="@+id/coordinatorLayout"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/appBarLayout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"&gt;
          &lt;android.support.v7.widget.Toolbar
              android:id="@+id/toolbar"
              android:layout_width="match_parent"
              android:layout_height="?android:attr/actionBarSize"
              android:background="?attr/colorPrimary"
              app:layout_scrollFlags="scroll|enterAlways"
              /&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
      &lt;android.support.v4.view.ViewPager
          android:id="@+id/home_viewpager"
          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>
  
  <p>If anyone would like me to post anymore of my code, please let me know! Thanks :)</p>