Recyclerview opens with the middle item and not from the top

Question

This is my fragment where I have called the recycler view:

public class sgpa_frag extends Fragment {
    //View view;
    RecyclerView recyclerview;
    adapter_sgpa ac;


    ArrayList<POJO> sgpaArrayList;

    public sgpa_frag() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    }

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_sgpa_frag, container, false);
        recyclerview= (RecyclerView) view.findViewById(R.id.rc1);
        sgpaArrayList= new ArrayList<>();
        ac= new adapter_sgpa(sgpaArrayList);
        recyclerview.setLayoutManager(new LinearLayoutManager(getContext(),RecyclerView.VERTICAL,true));
        recyclerview.setAdapter(ac);

        Fetchdata1();

        return view;
    }

    private void Fetchdata1()
    {
        dbmanager db= new dbmanager(getContext());

        Cursor cursor= db.fetch_data1();

        if (cursor!= null){

           // cursor.moveToFirst();

            while (cursor.moveToNext()){

                POJO pj= new POJO();
                pj.setSname(cursor.getString(0));
                pj.setSemester(cursor.getString(1));
                pj.setSgpa(cursor.getString(2));
                pj.setPercent(cursor.getString(3));
                pj.setSchemes(cursor.getString(4));
                sgpaArrayList.add(pj);
            }

            ac= new adapter_sgpa(sgpaArrayList);

        }


    }

}

This is my xml file:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".drawernav.bottom_navi.recycler_view.sgpa_frag">

    <!-- TODO: Update blank fragment layout -->

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rc1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingBottom="60dp">
    </androidx.recyclerview.widget.RecyclerView>

</FrameLayout>

I want my Recycler view to start displaying from the top item and not from the middle item . Can anyone tell me what changes should I make in my code ? Thanks in advance .

I mean to say that, it is like this:

And I want it to be like this:

What does "opens with the middle item" mean? Can you include a screenshot? — Ryan M, Mar 18 '20 at 10:38

Jayanth · Answer 1 · 2020-03-18T13:20:14.630

Try adding

android:descendantFocusability="blocksDescendants"

to the recyclerview parent layout

Edit:

I think it is not a problem with RecyclerView instead if you are using a cordinator layout as root layout, try giving margin to your FrameLayout of 60

<!-- TODO: Update blank fragment layout -->

<androidx.recyclerview.widget.RecyclerView
    android:id="@+id/rc1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop ="60dp" //approx for toolbar height
    android:paddingBottom="60dp">
</androidx.recyclerview.widget.RecyclerView>

is your root layout is coorinator layout? – Jayanth Mar 18 '20 at 13:17 — Jayanth, Mar 18 '20 at 13:17

Ridcully · Accepted Answer · 2020-03-18T13:27:13.587

1

You should set layout width and height of the recyclerview to match_parent.

The actual reason for your issue is probably the reverseLayout of your your linear layout manager. This has the effect as scrolling down the recyclerview.

Use this instead: new LinearLayoutManager(getContext(),RecyclerView.VERTICAL,false)

edited Mar 18 '20 at 13:27

answered Mar 18 '20 at 13:22

Ridcully

23,362
7
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86

Can you please try helping me with this as well? https://stackoverflow.com/questions/60735312/how-can-i-add-a-search-bar-to-my-recyclerview/60735564?noredirect=1#comment107465829_60735564 – Mar 18 '20 at 13:40

score 0 · Answer 3 · answered Mar 18 '20 at 07:03

0

Add this into you code

mRecyclerView.smoothScrollToPosition(0);

answered Mar 18 '20 at 07:03

Amit pandey

1,149
1
4
15

try this https://stackoverflow.com/questions/31235183/recyclerview-how-to-smooth-scroll-to-top-of-item-on-a-certain-position – Amit pandey Mar 18 '20 at 07:09

Recyclerview opens with the middle item and not from the top

3 Answers3