Try switching to coordinator layout

QuickPlay/Resources/layout/activity_main.xml

@@ -13,10 +13,10 @@
         android:layout_height="@dimen/abc_action_bar_content_inset_with_nav">
 -->
 <!-- TODO: Use Coordinator layout -->
-<RelativeLayout
+<CoordinatorLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:layout_height="fill_parent"
+    android:layout_height="wrap_content"
     android:layout_width="fill_parent"
     >
         <android.support.v7.widget.Toolbar
@@ -58,7 +58,7 @@
         android:layout_height="match_parent"
         android:id="@+id/linearLayout1" />
     -->
-</RelativeLayout>
+</CoordinatorLayout>
  <!--    
 </android.support.design.widget.CoordinatorLayout>
 -->