Toolbar will not collapse with Scrollview as child of CoordinatorLayout

Question

I am trying to follow the Google Docs on using the CoordinatorLayout but i am having an issue with the ScrollView inside the CoordinatorLayout. Basically, the Toolbar normally would collapse with a RecyclerView or a Listview when scrolling down. Now with a ScrollView it will not collapse.

<android.support.design.widget.CoordinatorLayout     android:layout_width="match_parent"     android:layout_height="match_parent">      <ScrollView         android:layout_width="match_parent"         android:layout_height="match_parent"         app:layout_behavior="@string/appbar_scrolling_view_behavior"         >          <TextView             android:id="@+id/tv_View"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:layout_gravity="center"             android:gravity="center"             android:text="@string/filler"             style="@style/TextAppearance.AppCompat.Large"             />      </ScrollView>      <android.support.design.widget.AppBarLayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         >         <android.support.v7.widget.Toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionBarSize"             app:layout_scrollFlags="scroll|enterAlways"             />      </android.support.design.widget.AppBarLayout>      </android.support.design.widget.CoordinatorLayout> 

Answer 1

The ScrollView does not cooperate with the CoordinatorLayout. You have to use NestedScrollView instead of ScrollView