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How do I scroll to a particular position with an offset inside recyclerview?

I have used 

public LinearLayoutManager linearlayoutmanager; linearlayoutmanager.scrollToPositionWithOffset(0, scrolled);

Also I have used scrollto 

mRecyclerView.scrollTo(0, scrolled);

Also I have used smoothScrolltoposition 

mRecyclerView.smoothScrollToPosition(scrolled);

But none seems to working for me.

If anyone knows anything about this please could you help me

UPDATE

Function where i am setting adapter of my Recyclerview

public void Nearby_Search_requestData() { OkHttpClient client = new OkHttpClient(); client = MySSLTrust.trustcert(getActivity()); RestAdapter adapter = new RestAdapter.Builder().setEndpoint(SEARCH_MERCHANT_ENDPOINT).setClient(new OkClient(client)).build(); final RetrofitInterface api = adapter.create(RetrofitInterface.class); if (api != null) { api.post_Nearby_Search(page.toString(), new Callback<Nearby_Search_All>() { @Override public void success(final Nearby_Search_All server_data, Response response) { if (server_data.getSuccess() == 1) { if (server_data.getResults().size() == 0) { if (page != 0) { mRecyclerView.scrollToPosition(firstVis); } else { Log.d("hii", "zero"); // NO_MERCHANT.setVisibility(View.VISIBLE); mAdapter = new searchrecyclerviewadapter(getActivity(), data, font); mRecyclerView.setAdapter(mAdapter); } } else { Log.d("scroll", "hii"); // NO_MERCHANT.setVisibility(View.INVISIBLE); if (server_data.getSize() > server_data.getResults().size()) { stay_on_this_page = true; } else { stay_on_this_page = false; } if (page == 0) { prev_total = 0; data.clear(); Log.d("hii", "Page is zero " + prev_total); list_size = server_data.getSize(); } else { Log.d("hii", "prev_total is " + prev_total + " Size is " + server_data.getSize() + " page is " + page); prev_total = server_data.getSize() * page; Log.d("hii", "Now prev_total is " + prev_total); } total_curr = server_data.getResults().size(); Log.d("hii", "first place is " + server_data.getResults().get(0).getShop_name()); for (int i = 0; i < total_curr; i++) { information current = new information(); current.title = server_data.getResults().get(i).getShop_name(); String street = server_data.getResults().get(i).getAddress().getStreet(); String area = server_data.getResults().get(i).getAddress().getArea(); current.Address = street + " " + area; String[] splited = area.split(","); current.area1 = splited[1]; current.type = server_data.getResults().get(i).getShop_type(); current.rating = server_data.getResults().get(i).getRating(); current.distance = server_data.getResults().get(i).getDistance(); current.jeb_no = server_data.getResults().get(i).getJeb_no(); current.total_photos = server_data.getResults().get(i).getTotal_photos(); if (current.total_photos == 0) { } else if (current.total_photos == 1) { current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1(); } else if (current.total_photos == 2) { current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1(); current.photo_2 = server_data.getResults().get(i).getPhotos().getPhoto_2(); } else { current.photo_1 = server_data.getResults().get(i).getPhotos().getPhoto_1(); current.photo_2 = server_data.getResults().get(i).getPhotos().getPhoto_2(); } data.add(current); } if (adapterinitialised) { mAdapter.notifyDataSetChanged(); } else { mAdapter = new searchrecyclerviewadapter(getActivity(), data, font); // mAdapter.setClickListener(Search.class); mRecyclerView.setAdapter(mAdapter); adapterinitialised = true; } } // mRecyclerView.scrollToPosition(firstVis); Log.d("scroll", "hee"); scrolled = scrolled + 10; Log.d("scroll", "scrolled: " + scrolled); // ALL BELOW CODE I HAVE TRIED FOR SCROLLING BUT NONE WAS HELPFUL /* mRecyclerView.post(new Runnable() { @Override public void run() { mRecyclerView.smoothScrollToPosition(scrolled); // or do mRecyclerView.scrollTo(0, scrolled); } }); */ // l.scrollToPositionWithOffset(0, scrolled); // mRecyclerView.smoothScrollToPosition(scrolled); // mRecyclerView.scrollBy(0, scrolled); // l.scrollToPosition(); // mRecyclerView.scrollToPosition(scrolled); // mRecyclerView.smoothScrollBy(0, scrolled); // mRecyclerView.scrollBy(0, 10); // mRecyclerView.scrollTo(0, 10); } else { Log.d("hii", server_data.getMessage()); Toast.makeText(getActivity(), server_data.getMessage(), Toast.LENGTH_SHORT).show(); } } @Override public void failure(RetrofitError retrofitError) { Log.d("hii", "failure"); Log.e("hii", retrofitError.toString()); Toast.makeText(getActivity(), retrofitError.toString(), Toast.LENGTH_SHORT).show(); } }); } else { Log.d("hii", "api null"); } }
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22
  • 1
    try RecyclerView#scrollBy(int x, int y) Commented Dec 14, 2015 at 16:25
  • no i it is not working ?? also as i am putting x as 0 it will scroll vertically ?? Commented Dec 14, 2015 at 16:33
  • did you try it? if so, what did you try? what was the result? Commented Dec 14, 2015 at 16:36
  • nothing scrolled i was at position 0 ?? Commented Dec 14, 2015 at 16:37
  • just try mRecyclerView.scrollBy(0, 100); and see what happens Commented Dec 14, 2015 at 16:38

5 Answers 5

Reset to default
15

Here is my answer. Set 

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(context); linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);//or HORIZONTAL recyclerView.setLayoutManager(linearLayoutManager); adapter = new Adapter(...); recyclerView.setAdapter(adapter);

This provides direction of your RecyclerView, adapter and data (replace ... with context, list, array or another data needed). Than set 

linearLayoutManager.scrollToPositionWithOffset(position, offset);

Now the interesting thing:

  • this will scroll to position and place it at the top of the list in case of VERTICAL linear layout manager an at the left with HORIZONTAL
  • if offset is positive, VERTICAL layout manager will scroll this position downwards by offset in pixels (rightwards with HORIZONTAL layout manager)
  • if position is 0 and offset is positive, than nothing will happen, because RecyclerView does not have any items positioned at the top of your 0 position (at the left with HORIZONTAL layout manager)
  • if position is 0 and offset is negative, than VERTICAL layout manager will scroll 0 position upwards by offset in pixels (leftwards with HORIZONTAL)
  • also nothing will happen if RecyclerView's height (width with HORIZONTAL orientation) is smaller than screen size
  • also it will scroll wrongly if position to scroll to is last or near the end and its height (width in case of HORIZONTAL orientation) is relatively small

Hope this will clarify situation for you with RecyclerView's layout manager

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4 Comments

It's interesting that only scrollToPositionWithOffset works, instead of for example recyclerView.scrollTo or scrollBy. However, how to solve the issues when near to the bottom? I have issues in these cases - doesn't have to be super-near to the bottom, starts at a fairly large distance - and the height isn't that small.
I mean isn't there any method to scroll a recycler view (more specifically when initialized - appears to work in other cases) reliably? This is crazy...
I didn't understood your requirements ("However, how to solve the issues when near to the bottom"), but quick suggestion is to add padding to recyclerview for bottom and add clipToPadding=false to scroll pass the bottom item. And, if my answer was "correct" - please mark it as corect.
@aman verma, please consider to mark my answer as correct if it resolves your question
3

I believe what your looking for is to run this scroll but do so by posting a runnable on your RecyclerView and run the smoothScrollToPosition there:

 // use either post or postDelayed mRecyclerView.postDelayed(new Runnable() { @Override public void run() { mRecyclerView.smoothScrollToPosition(scrolled); // or do mRecyclerView.scrollTo(0, scrolled); } }, 1000);

if you would like to skip the delay:

 mRecyclerView.post(new Runnable() { @Override public void run() { mRecyclerView.smoothScrollToPosition(scrolled); // or do mRecyclerView.scrollTo(0, scrolled); } });
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8 Comments

i don't get it, why are you using threads why doesn't just mRecyclerView.smoothScrollToPosition(scrolled) work ??
@amanverma creating a new Runnable does not use a new Thread unless you explicitly pass that Runnable to a Thread
yea but why using this doesnt mRecyclerView.smoothScrollToPosition(scrolled) alone sufficient why use runnable ??
@amanverma in simplistic terms, the UI is not ready to scroll to a position as its setting up, so posting a new Runnable to do the work will account for this. please see stackoverflow.com/questions/11431832/…
Yep this is working but i dot know why normal scrolltoposition is not working also scrolling is happening but after some seconds can you pls tell me why is this happeing and how to remove this.
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1

This works for me:

recyclerView.postDelayed(new Runnable() { @Override public void run() { recyclerView.smoothScrollToPosition(0); } }, 10); recyclerView.post(new Runnable() { @Override public void run() { recyclerView.smoothScrollToPosition(0); } });
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-2

According with the documentation you should use scrollToPosition.

http://developer.android.com/reference/android/support/v7/widget/RecyclerView.html#scrollToPosition(int)

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4 Comments

i have used but it didn't work public LinearLayoutManager linearlayoutmanager; linearlayoutmanager.scrollToPositionWithOffset(0, scrolled);
but i also need an offset
The offset start from 0, right? You can keep the position in a variable, and when you scroll your offset shoud be: offset + getPosition of developer.android.com/reference/android/support/v7/widget/…
Check this post stackoverflow.com/questions/26875061/…
-3

This may work

mRecyclerView.scrollToPosition(0);

0, in this case, represents the position in the adapter

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2 Comments

"position - Scroll to this adapter position" that is not an offset.
Re-done the downvote. But still, I don't think it is an answer to the question. :)

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