+ android:layout_height="match_parent"
+ app:layout_scrollFlags="scroll|exitUntilCollapsed">
+
+ <android.support.v7.widget.Toolbar
+ android:id="@+id/toolbar"
+ android:layout_width="match_parent"
+ app:layout_collapseMode="pin"
+ android:layout_height="?attr/actionBarSize"
+ app:popupTheme="@style/AppTheme.PopupOverlay" />
+ </android.support.design.widget.CollapsingToolbarLayout>