android - CoordinatorLayout not working -


i attempting implement coordinatorlayout newly announced android design support library , have used following code in xml layout per sample here:

<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/main_content" android:layout_width="match_parent" android:layout_height="match_parent">  <android.support.design.widget.appbarlayout     android:id="@+id/appbar"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:theme="@style/themeoverlay.appcompat.dark.actionbar">      <android.support.v7.widget.toolbar         android:id="@+id/toolbar"         android:layout_width="match_parent"         android:layout_height="?attr/actionbarsize"         android:background="?attr/colorprimary"         app:popuptheme="@style/themeoverlay.appcompat.light"         app:layout_scrollflags="scroll|enteralways"/>      <android.support.design.widget.tablayout         android:id="@+id/tabs"         android:layout_width="match_parent"         android:layout_height="wrap_content"/>  </android.support.design.widget.appbarlayout>  <android.support.v4.view.viewpager     android:id="@+id/viewpager"     android:layout_width="match_parent"     android:layout_height="match_parent"     app:layout_behavior="@string/appbar_scrolling_view_behavior" />

however action bar not hide when scroll down view. can't figure out why not working.

edit: far aware appears coordinatorlayout not work listview/gridview/scrollviews , works recyclerview , nestedscrollview. unfortunately switching 1 of these views not possibility me still looking solution.

i believe need make listview implement both scrollingview , nestedscrollingchild interfaces.

it's not easiest thing, should able if @ recyclerview's source code. makes use of nestedscrollingchildhelper , should able same.


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