android - CoordinatorLayout in combination with CollapsingToolbarLayout, RecyclerView and Fragments issue -


in application have 1 mainactivity witch contains container fragments, 1 fragment - coordinatorfragment cordinatoirlayout+recycleview , collapsingtoolbarlayout , second - simplefragment 1 textview. on create mainactivity add first fragment 

@override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     fragmenttransaction transaction = getfragmentmanager().begintransaction();     fragment fragment = new coordinatorfragment();     transaction.replace(r.id.fragmentcontainer,fragment);     transaction.commit(); }

coordinatorfragnet's layout:

<android.support.design.widget.coordinatorlayout     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical">      <android.support.design.widget.appbarlayout         android:id="@+id/main_appbar"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:background="#fff"         android:fitssystemwindows="true">          <android.support.design.widget.collapsingtoolbarlayout             android:id="@+id/main.collapsing"             android:layout_width="match_parent"             android:layout_height="match_parent"             android:background="#0000"             android:fitssystemwindows="true"             app:layout_scrollflags="snap|scroll|enteralways">              <linearlayout                 android:layout_width="match_parent"                 android:layout_height="wrap_content"                 android:background="#0000"                 android:fitssystemwindows="true"                 android:orientation="vertical"                 app:layout_collapsemode="none">                  <imageview                     android:id="@+id/first"                     android:layout_width="wrap_content"                     android:layout_height="23dp"                     android:layout_marginleft="20dp"                     android:layout_marginright="20dp"                     android:layout_margintop="30dp"                     android:adjustviewbounds="true" />                  <textview                     android:id="@+id/second"                     android:layout_width="match_parent"                     android:layout_height="wrap_content"                     android:layout_marginleft="20dp"                     android:layout_marginright="20dp"                     android:layout_margintop="40dp" />                  <textview                     android:id="@+id/third"                     android:layout_width="match_parent"                     android:layout_height="wrap_content"                     android:layout_marginleft="20dp"                     android:layout_marginright="20dp" />                  <view                     android:layout_width="match_parent"                     android:layout_height="130dp"                     android:layout_margintop="20dp"                     android:background="#fff" />             </linearlayout>         </android.support.design.widget.collapsingtoolbarlayout>          <view             android:id="@+id/fourth"             android:layout_width="match_parent"             android:layout_height="10dp"             android:background="#fff"             app:layout_collapsemode="pin" />          <linearlayout             android:id="@+id/fiveth_field"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:orientation="horizontal"             android:background="@color/colorprimary"             app:layout_collapsemode="pin">              <textview                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_weight="1"                 android:gravity="center_horizontal"                 android:padding="20dp"                 android:text="right" />              <textview                 android:layout_width="0dp"                 android:layout_height="wrap_content"                 android:layout_weight="1"                 android:gravity="center_horizontal"                 android:padding="20dp"                 android:text="left" />         </linearlayout>     </android.support.design.widget.appbarlayout>      <android.support.v7.widget.recyclerview         android:id="@+id/recyclerview"         android:layout_width="match_parent"         android:layout_height="wrap_content"         app:layout_behavior="@string/appbar_scrolling_view_behavior" /> </android.support.design.widget.coordinatorlayout>

in using recycleeview's adapter replace first fragments second

 @override     public void onbindviewholder(recyclerview.viewholder holder, int position) {         holder.itemview.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view view) {                 getfragmentmanager().begintransaction().replace(r.id.fragmentcontainer, new simplefragment()).addtobackstack("tag").commit();             }         });     }

after first initialization ok. can scroll recyclerview content , last item visible.

scroll last (first init)

but after moving second fragment , go first fragment, clicking button, last item of recyclerview cutted on size of not collapse part of toolbar. , there no ability view item. other functionality ok.

scroll last (after fragments replacement , click button)

any ideas how fix issue leaving fragment based implementation? in advance !!

change recyclerview's height match_parent.


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