Swipe one item at a time Recyclerview

Question

I tried adding on Scroll listener for recycler view and made some logic but i am not able to swipe one item at a time. I did some search on internet but i got some third party library which has custom recycler view. Can we implement one item swipe at a time in recycler view? If yes Please tell how? One item swipe at a time like this image.

Viewpager is what you're looking for. As for custom transitions go through [this](http://developer.android.com/training/animation/screen-slide.html) — Udit Mukherjee, Sep 01 '15 at 06:34
Thank you. But i cant use ViewPager for scrolling one item in Recyclerview. — , Sep 01 '15 at 06:46
Duplicate question. Please refer this [link](http://stackoverflow.com/a/41988804/7182978). — Kshitij Jain, Feb 11 '17 at 18:25
hello @AkshayBhat'AB' can you please help me with this https://stackoverflow.com/questions/49952965/recyclerview-horizontal-scrolling-to-left?noredirect=1#comment87836903_49952965 — , May 18 '18 at 12:09

score 41 · Answer 1 · edited Mar 18 '19 at 19:02

41

This softens the movement between items:

public class SnapHelperOneByOne extends LinearSnapHelper {

    @Override
    public int findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY) {

        if (!(layoutManager instanceof RecyclerView.SmoothScroller.ScrollVectorProvider)) {
            return RecyclerView.NO_POSITION;
        }

        final View currentView = findSnapView(layoutManager);

        if (currentView == null) {
            return RecyclerView.NO_POSITION;
        }

        LinearLayoutManager myLayoutManager = (LinearLayoutManager) layoutManager;

        int position1 = myLayoutManager.findFirstVisibleItemPosition();
        int position2 = myLayoutManager.findLastVisibleItemPosition();

        int currentPosition = layoutManager.getPosition(currentView);

        if (velocityX > 400) {
            currentPosition = position2;
        } else if (velocityX < 400) {
            currentPosition = position1;
        }

        if (currentPosition == RecyclerView.NO_POSITION) {
            return RecyclerView.NO_POSITION;
        }

        return currentPosition;
    }
}

Example:

LinearSnapHelper linearSnapHelper = new SnapHelperOneByOne();
linearSnapHelper.attachToRecyclerView(recyclerView);

edited Mar 18 '19 at 19:02

סטנלי גרונן

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answered Mar 18 '19 at 17:28

Vladimir Escoto

413
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You Are Genius Bro , Thanks – ParSa Aug 19 '19 at 23:08
Why are there constants? 400 – user924 Jan 08 '20 at 16:51
1

nice but in case of vertical scroll velocityX replace with velocityY working for me. and mr user924 400 is used for check then velocity of scroll is below of more for check up scroll or down scroll – Amar Singh May 07 '20 at 08:28
Its really worth. You saved my day bro. Thanks – G.N.SRIDHAR Sep 11 '20 at 10:12
If you're using the reverse layout in recyclerView then change the position2 with position1 in the if-else clause. now you'll get the desired output. – Vijay Jan 21 '21 at 05:41
Thanks, it's perfect – Skovie Feb 11 '21 at 15:23
is there a way i can make switch to another item more quicker as in current form it feels very slow – tycoon Aug 10 '22 at 15:24

score 33 · Answer 2 · answered Oct 30 '17 at 22:52

33

This is late, i know.

There is a very simple way to get exactly the requested scrolling behaviour with the use of a custom SnapHelper.

Create your own SnapHelper by overwriting the standard one (android.support.v7.widget.LinearSnapHelper).

public class SnapHelperOneByOne extends LinearSnapHelper{

    @Override
    public int findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY){

        if (!(layoutManager instanceof RecyclerView.SmoothScroller.ScrollVectorProvider)) {
            return RecyclerView.NO_POSITION;
        }

        final View currentView = findSnapView(layoutManager);

        if( currentView == null ){
            return RecyclerView.NO_POSITION;
        }

        final int currentPosition = layoutManager.getPosition(currentView);

        if (currentPosition == RecyclerView.NO_POSITION) {
            return RecyclerView.NO_POSITION;
        }

        return currentPosition;
    }
}

This is basicly the stadard method, but without adding a jump counter which gets calculated by scroll speed.

If you swipe fast and long, the next(or previous) view will be centered (shown).

If you swipe slow and short, the current centered view stays centered after release.

I hope this answer can still help anybody.

answered Oct 30 '17 at 22:52

Palm

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6
17

Thank you! your answer saved my day – Hoby Dec 30 '17 at 20:22
4

Is there is any method to increase speed of Swipe. It swipes but it will need full swipe to scroll to next item. – Dheeraj Rijhwani May 03 '18 at 13:53
had you find any way to increase speed of swipe? – Rahul Khurana Aug 23 '18 at 18:52
@DheerajRijhwani did you find a solution? – user924 Jan 08 '20 at 16:50
it's not very good, because you still need to scroll to the end – user924 Jan 08 '20 at 16:51
not smooth to scroll – Amar Singh May 07 '20 at 08:17
6

Use the new `PagerSnapHelper()` rather than `LinearShapHelper()` – Bilal Kazi May 07 '20 at 14:55
loved your Answer buddy Thanks Saved my day bruh – shivam chawla Sep 01 '20 at 14:11

score 2 · Answer 3 · answered Sep 01 '15 at 10:53

https://github.com/googlesamples/android-HorizontalPaging/

This has the link to something similar to what you have shown in the images. Let me know if there is something additional you are looking for, and I will link the relevant libraries.

Basically the difference between ViewPager and recyclerView is that, in recyclerView you are switching between many item, while in ViewPager you are switching between many fragments or independent pages itself.

I see you are using this https://github.com/lsjwzh/RecyclerViewPager, is there any particular use case you have in mind?

Swipe one item at a time Recyclerview

3 Answers3

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