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I've been through several solutions over the stack overflow but could not achieve the desired result. I have a firebase recyclerview for a comment section. The firebase recyclerview exist with in the scroll view as am scroll some other part of the layout as well with the normal firebase recyclerview. I've set RecyclerView.setNestedScrollingEnabled(false), so the scrollview can scroll smoothly. right now I'm able to successfully scroll through out the layout but my problem only arises when I enter the activity the layout is shown from the top which is something, I don't want. I want the firebase recyclerview or the scroll view to be shown from the last item which is in the bottom. Also I want to the RecyclerView to automatically scroll to the last item position whenever the user enters a new comment

Any Help would be appreciated thank you

Below is my code

the code inside the oncreate for initialization

 replyInDetailCommentsRecyclerView = findViewById(R.id.replyInDetailCommentsRecyclerView);
 linearLayoutManager1 = new LinearLayoutManager(this);
 replyInDetailCommentsRecyclerView.setLayoutManager(linearLayoutManager1);
 replyInDetailCommentsRecyclerView.setNestedScrollingEnabled(false);

The code inside the firebase recyclerview, I've only added the relevant part to the problem. hope it helps

 adapter1.startListening();
 adapter1.notifyDataSetChanged();
 adapter1.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() 
 @Override
 public void onItemRangeInserted(int positionStart, int itemCount) 
 super.onItemRangeInserted(positionStart, itemCount);
 int friendlyMessageCount = adapter1.getItemCount();
 int lastVisiblePosition =
 linearLayoutManager1.findLastCompletelyVisibleItemPosition();

 if (lastVisiblePosition == -1 
 );


 replyInDetailCommentsRecyclerView.setAdapter(adapter1);
 adapter1.notifyDataSetChanged();

My XML Code

 <ScrollView
 android:layout_below="@+id/RelativeLayout1"
 android:layout_width="match_parent"
 android:fillViewport="true"
 android:fitsSystemWindows="true"
 android:layout_marginBottom="50dp"
 android:layout_height="match_parent">






<RelativeLayout
 android:id="@+id/RelativeLayout5"
 android:layout_width="match_parent"
 android:layout_below="@id/RelativeLayout1"
 android:layout_height="wrap_content">



<RelativeLayout
 android:id="@+id/RelativeLayout2"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:layout_below="@id/RelativeLayout4">


 <android.support.v7.widget.RecyclerView
 android:id="@+id/replyInDetailCommentsRecyclerView"
 android:layout_width="match_parent"
 android:layout_height="wrap_content">




 </android.support.v7.widget.RecyclerView>










</RelativeLayout>




<RelativeLayout
 android:id="@+id/RelativeLayout4"
 android:layout_width="match_parent"
 android:layout_height="wrap_content">


 <de.hdodenhof.circleimageview.CircleImageView
 android:id="@+id/imageInDetailComments"
 android:layout_width="30dp"
 android:src="@drawable/profile"
 android:layout_alignParentLeft="true"
 android:layout_alignParentTop="true"
 android:layout_marginLeft="8dp"
 android:layout_marginTop="8dp"

 android:layout_height="30dp"/>

 <android.support.v7.widget.AppCompatTextView
 android:id="@+id/nameInDetailComments"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:textSize="14sp"
 android:textStyle="bold"
 android:layout_alignTop="@+id/imageInDetailComments"
 tools:text="Saqib"

 android:layout_toRightOf="@+id/imageInDetailComments"
 android:layout_marginLeft="5dp"

 android:textColor="#096697"
 android:layout_toEndOf="@+id/imageInDetailComments"
 android:layout_marginStart="5dp" />

 <android.support.v7.widget.AppCompatRatingBar
 android:id="@+id/ratingInDetailComments"
 style="?android:attr/ratingBarStyleSmall"
 android:layout_width="wrap_content"
 android:max="5"
 android:numStars="5"
 android:progressBackgroundTint="@color/colorAccent"

 android:progressTint="@color/colorAccent"
 android:rating="0.0"
 android:secondaryProgressTint="@color/colorAccent"
 android:stepSize="0.0"
 android:layout_height="wrap_content"
 android:layout_toRightOf="@+id/imageInDetailComments"
 android:layout_marginLeft="5dp"
 android:layout_below="@+id/nameInDetailComments"

 android:layout_marginStart="5dp"
 android:layout_toEndOf="@+id/imageInDetailComments" />


 <android.support.v7.widget.AppCompatTextView
 android:id="@+id/userCommentInDetailComments"
 android:layout_width="0dp"
 android:layout_below="@+id/ratingInDetailComments"
 android:layout_alignParentRight="true"
 android:layout_toRightOf="@+id/imageInDetailComments"
 android:layout_height="wrap_content"
 android:layout_marginTop="5dp"
 android:layout_marginLeft="5dp"
 android:background="#efeeee"
 android:padding="5dp"
 android:text="i can do it mate, my bidding price includes gotaskie fee"
 />



 <View
 android:layout_below="@+id/userCommentInDetailComments"
 android:layout_marginTop="8dp"
 android:id="@+id/lineAboveCommentsRecyclerView"
 android:layout_width="match_parent"
 android:layout_height="2dp"
 android:background="#dad8d8"

 />

</RelativeLayout>


</RelativeLayout>
</ScrollView>

You can use NestedScrollView instead of ScrollView