Dfyjkt

I have page with a collapsable header. I am not able scroll with the header after I lock and unlock the device (sometimes it happens when I go to another fragment and back again). I can scroll only by touch the body (not header).

Thanks for the answers.

Here is my code:

<android.support.design.widget.CoordinatorLayout
 android:id="@+id/coordinator"
 android:layout_width="match_parent"
 android:layout_height="match_parent">

 <android.support.design.widget.AppBarLayout
 android:id="@+id/app_bar_layout"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:background="@null">

 <android.support.design.widget.CollapsingToolbarLayout
 android:id="@+id/toolbar_layout"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:layout_scrollFlags="scroll|enterAlwaysCollapsed">

 <include
 android:id="@+id/event_detail_header"
 layout="@layout/view_event_detail_header"
 app:item="@item" />

 </android.support.design.widget.CollapsingToolbarLayout>

 <android.support.design.widget.TabLayout
 android:id="@+id/tab_layout"
 style="@style/AppTabLayout"
 android:layout_width="match_parent" />

 </android.support.design.widget.AppBarLayout>

 <android.support.v4.view.ViewPager
 android:id="@+id/pager"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</android.support.design.widget.CoordinatorLayout>