I have a ViewPager having RecyclerView in each page.
ViewPager has layout behavior set to appbar_scrolling_view_behavior

when swiping list up, after finger is off the screen, fling starts, coordinator layout does not scroll, just the list moves up, appbar stays where the finger was left

For example, suppose I have tens of views to scroll through. If the user scrolled x/2 and a bit more, it will get to the X view.

So i started testing out this GravitySnapHelper and i noticed a very subtle issue that arises after continually testing. So its difficult to reproduce every single time but i have tested it enough to reproduce it several times.

If you are scrolling through the RecyclerView with a swipe gesture, your finger remains on the screen and you let go while the second half of an item ( lets say item number 5) in the adapter shows then it slides to the left so then item number 6 is the furthest left item to show.

Now if you are scrolling through the RecyclerView with a swipe gesture, your finger remains on the screen and you let go while the first half of an item ( lets say item number 5) in the adapter shows then it slides to the left so then item number 5 is the furthest left item to show.

Once in awhile, if you are scrolling through the RecyclerView with a swipe gesture, your finger remains on the screen and you let go while the first half of an item ( lets say item number 5) in the adapter shows then it slides to the left so then item number 4 is the furthest left item to show. So in this case it slides too far.

how to do get Click Listener ，
I use this ersion
https://github.com/rubensousa/RecyclerViewSnap/commit/ba738bba0de23f18a780590b8fc88338c92b9d3d
My App not work and no debug info

snapHelper.findTargetSnapPosition() can receive the visible item position?

Thanks for your great work! Could you please create a library and host it on somewhere like bintray?

First of all, absolutely like this! It was really easy to use, and the results achieved is amazing.

I have a question, and not sure how do I go about if I implement this with my RecyclerView. Basically, my RecyclerView is showing 4 rows per screen. Using RecyclerViewSnap, how do I go about scrolling my RecyclerView like a ViewPager? I like how RecyclerViewSnap already does help me present only 4 rows per screen, but I was hoping to achieve this:

1. User enters app, sees position 0 - 4 of the recycler view row.
2. No matter how hard the user swipe / scroll, it will paginate to the next 4 position. Say if user were to scroll down, from the first screen (row 0-4), they will see position row 5-9. And if they scroll/swipe down again, they will see row 10-13. And if they swipe up from row 10-13, they will see row 5-9.

Thank you!

Hi @rubensousa, thank you for great library. I have scrolling problem when using this a library. I have a ViewPager and I have horizontal orientation RecyclerView inside secondary fragment page. All items of this RecyclerView is a vertical orientation RecyclerView.
So, you can visualize structure like that: vertical orientation RecyclerView is item of horizontal orientation RecyclerView is item of ViewPager. (RecyclerView->RecyclerView->ViewPager)

When you scrolling horizontally works not a stable and smoothly, works hardly and not works any time.
When you scrolling vertically of vertical orientation RecyclerView not fully end, RecyclerView will be automatic scroll to head of the list. If you will scroll until end of list then stopped auto scrolling above.

For understanding my problem i created sample project, please look it:

Sample project -> ProbaSnapRV.zip

Video:

Please, help me solve horizontally and vertically scrolling problems, i want they works smoothly

I am trying to put onclick listener for each item in each snap,so for the first position in the spanscenter has different function than that in endsnap and startsnap,I succeeded in adding click listener for each item (code below),but am having same action for item position 1(for example) in the Four snaps

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public ImageView imageView;
        public TextView nameTextView;
        public TextView ratingTextView;

        public ViewHolder(View itemView) {
            super(itemView);
            itemView.setOnClickListener(this);
            imageView = (ImageView) itemView.findViewById(R.id.imageView);
            nameTextView = (TextView) itemView.findViewById(R.id.nameTextView);
            ratingTextView = (TextView) itemView.findViewById(R.id.ratingTextView);
        }

        @Override
        public void onClick(View v) {
            Log.d("App", mApps.get(getAdapterPosition()).getName());
            if (getAdapterPosition()==0){
                Toast.makeText(itemView.getContext(), "Position: " + Integer.toString(getAdapterPosition()), Toast.LENGTH_LONG).show();


            }
        }
    }

Suppose I want to snap to center, similar to this:

Currently it seems that snapping only works after scrolling, and not right when we show the RecyclerView.

Also, it doesn't let me have the first and last items to be in the center.

Hi:
Will GravityPagerSnapHelper not support GridLayoutManager mode? How should deal with it? Thank you

Snap Center: How to set first item to center. Thanks

How to setting a Click Listener on Verry Snap and Subject Item

When we use GridLayoutManager not either element takes 1 cell. That's why logic
if (layoutManager instanceof GridLayoutManager) { offset += ((GridLayoutManager) layoutManager).getSpanCount() - 1; }
is not correct. We need to consider results of spanSizeLookup.getSpanSize

I've copied all the codes, but the vertical recyclerview #doesnt appear.

 SnapHelper snapHelper = new GravitySnapHelper(Gravity.TOP);
  snapHelper.attachToRecyclerView(mRecyclerView);

For example I need to show next element if it is visible more than 50%. Or hide first element if it's hidden more than 50%.
Because current behavior is :
if we scroll down and first item is hidden by 80%, then SnapHelper scrolls up the list and first element is visible again.
Expected behavior :
if we scroll down and first item is hidden by 80%, then SnapHelper should scroll down to hide first item.

Use Case: I want a Gravity.Start list where I can have the last item snapped to the first position (all the way at the start). The reason for this is that I want to highlight / show something related to the item currently snapped and I want to be able to do this for all items.

To accomplish this, you can add enough padding to the end of the recyclerview that you can scroll the last item all the way to the start of the view. The RecyclerViewSnap functions perfectly - it correctly can snap to all the items including the Last item - no problem. However, the SnapListener does not fire ever in this scenario. No matter where you are in the list (first item, middle of the list, last item), the code in GravityDelegate for onScrollStateChanged where it calls getSnappedPosition(recyclerView) returns RecyclerView.NO_POSITION even though the snap is working completely correctly and the item is completely visible.

Example: Make an item that is 150dp wide, set up your recyclerview like follows:

<android.support.v7.widget.RecyclerView
    android:id="@+id/myRecyclerview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:paddingStart="12dp"
    android:paddingEnd="300dp"
    android:clipChildren="false"
    android:clipToPadding="false"/>

Snapping works correctly for all items, SnapListener never fires for any item.

Change the paddingEnd to be 200, you'll be able to snap to the 2nd to last item (further than the default with no padding - which is the 3rd to last item), and the SnapListener works correctly, however you can't snap to the last item.

In summary with enough padding added, the code to execute the snap appears to work 100% correctly, but the code to report the item snapped to seems to break.

I have a continuously loading paginated horizontal list. Loading new page is triggered on bottom scroll when there are less than 10 items to the end of the adapter list. The moment when a new page is loaded the snap jumps directly to the end. Maybe you tested only cases where adapter size does not change on the fly.

org.gradle.internal.resource.transport.http.HttpErrorStatusCodeException: Could not HEAD 'https://jitpack.io/com/github/rubensousa/gravitysnaphelper/1.5/gravitysnaphelper-1.5.pom'. Received status code 401 from server: Unauthorized at org.gradle.internal.resource.transport.http.HttpClientHelper.processResponse(HttpClientHelper.java:158) at org.gradle.internal.resource.transport.http.HttpClientHelper.performHead(HttpClientHelper.java:76) at org.gradle.internal.resource.transport.http.HttpResourceAccessor.getMetaData(HttpResourceAccessor.java:65) at org.gradle.internal.resource.transfer.DefaultExternalResourceConnector.getMetaData(DefaultExternalResourceConnector.java:63) at org.gradle.internal.resource.transfer.AccessorBackedExternalResource.getMetaData(AccessorBackedExternalResource.java:201) at org.gradle.internal.resource.BuildOperationFiringExternalResourceDecorator$1.call(BuildOperationFiringExternalResourceDecorator.java:61) at org.gradle.internal.resource.BuildOperationFiringExternalResourceDecorator$1.call(BuildOperationFiringExternalResourceDecorator.java:58) at org.gradle.internal.progress.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:350) at org.gradle.internal.progress.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:340) at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199) at org.gradle.internal.progress.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:120) at org.gradle.internal.resource.BuildOperationFiringExternalResourceDecorator.getMetaData(BuildOperationFiringExternalResourceDecorator.java:58) at org.gradle.internal.resource.transfer.DefaultCacheAwareExternalResourceAccessor$1.create(DefaultCacheAwareExternalResourceAccessor.java:102) at org.gradle.internal.resource.transfer.DefaultCacheAwareExternalResourceAccessor$1.create(DefaultCacheAwareExternalResourceAccessor.java:82) at org.gradle.cache.internal.ProducerGuard$AdaptiveProducerGuard.guardByKey(ProducerGuard.java:97) at org.gradle.internal.resource.transfer.DefaultCacheAwareExternalResourceAccessor.getResource(DefaultCacheAwareExternalResourceAccessor.java:82) at org.gradle.api.internal.artifacts.repositories.resolver.DefaultExternalResourceArtifactResolver.downloadByCoords(DefaultExternalResourceArtifactResolver.java:129) at org.gradle.api.internal.artifacts.repositories.resolver.DefaultExternalResourceArtifactResolver.downloadStaticResource(DefaultExternalResourceArtifactResolver.java:95) at org.gradle.api.internal.artifacts.repositories.resolver.DefaultExternalResourceArtifactResolver.resolveArtifact(DefaultExternalResourceArtifactResolver.java:65) at org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver.parseMetaDataFromArtifact(ExternalResourceResolver.java:216) at org.gradle.api.internal.artifacts.repositories.resolver.MavenResolver.parseMetaDataFromArtifact(MavenResolver.java:170) at org.gradle.api.internal.artifacts.repositories.resolver.MavenResolver.parseMetaDataFromArtifact(MavenResolver.java:65) at org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver.resolveStaticDependency(ExternalResourceResolver.java:193) at org.gradle.api.internal.artifacts.repositories.resolver.MavenResolver.doResolveComponentMetaData(MavenResolver.java:145) at org.gradle.api.internal.artifacts.repositories.resolver.ExternalResourceResolver$RemoteRepositoryAccess.resolveComponentMetaData(ExternalResourceResolver.java:467) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.CachingModuleComponentRepository$ResolveAndCacheRepositoryAccess.resolveComponentMetaData(CachingModuleComponentRepository.java:363) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.BaseModuleComponentRepositoryAccess.resolveComponentMetaData(BaseModuleComponentRepositoryAccess.java:50) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.memcache.InMemoryCachedModuleComponentRepository$CachedAccess.resolveComponentMetaData(InMemoryCachedModuleComponentRepository.java:95) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ErrorHandlingModuleComponentRepository$ErrorHandlingModuleComponentRepositoryAccess.resolveComponentMetaData(ErrorHandlingModuleComponentRepository.java:126) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.process(ComponentMetaDataResolveState.java:66) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.ComponentMetaDataResolveState.resolve(ComponentMetaDataResolveState.java:58) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:138) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.findBestMatch(RepositoryChainComponentMetaDataResolver.java:119) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolveModule(RepositoryChainComponentMetaDataResolver.java:92) at org.gradle.api.internal.artifacts.ivyservice.ivyresolve.RepositoryChainComponentMetaDataResolver.resolve(RepositoryChainComponentMetaDataResolver.java:63) at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.buildComponentResult(DefaultArtifactResolutionQuery.java:147) at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.access$100(DefaultArtifactResolutionQuery.java:64) at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery$1.create(DefaultArtifactResolutionQuery.java:123) at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery$1.create(DefaultArtifactResolutionQuery.java:116) at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:222) at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:152) at org.gradle.cache.internal.DefaultCacheFactory$ReferenceTrackingCache.useCache(DefaultCacheFactory.java:190) at org.gradle.api.internal.artifacts.ivyservice.DefaultCacheLockingManager.useCache(DefaultCacheLockingManager.java:62) at org.gradle.api.internal.artifacts.query.DefaultArtifactResolutionQuery.execute(DefaultArtifactResolutionQuery.java:116)

I'm trying to do a snappy recycler view and your code works perfectly for that. However, I'm trying to figure out how to get the index of the item that was snapped. I proxied the findTargetSnapPosition method, but it tends to return -1 quite often.

Any idea how to fetch the position, preferably by listening to the snap helper?

I have the next problem, I have this view, the problem is when the user scroll at first element, when the "top" of the view is reached (0,0) the GravitySnapHelper.SnapListener dont return the position, this only happens if the view is scrolled at "(0,0) ", but if i scroll at "(0, .1)" for example(only a little bit of scroll in y position) , it wokrs fine. . The callback is not fired, when the view is in their original state

Here is the layout:

  private fun setProductsAdapter() {
        val layoutManager = LinearLayoutManager(activity)
        layoutManager.isItemPrefetchEnabled = false
        recyclerViewGallery.layoutManager = layoutManager
        recyclerViewGallery.setHasFixedSize(true)

        productImageAdapter = ProductImageAdapter(product)
        recyclerViewGallery.adapter = productImageAdapter

        GravitySnapHelper(Gravity.TOP, false,
            GravitySnapHelper.SnapListener { position ->

                drawGalleryIndicator(position)
              
            }).attachToRecyclerView(recyclerViewGallery)

        drawGalleryIndicator(0)
    }

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clickable="true"
    android:foreground="?attr/selectableItemBackground"
    android:orientation="vertical">

    <ImageView xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/iv_product"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:adjustViewBounds="true"
        android:scaleType="centerCrop"
        app:srcCompat="@drawable/ic_perro_logo_w_letters">

    </ImageView>
</androidx.cardview.widget.CardView>

Upon using the sample, I noticed it calls onCreateViewHolder and onBindViewHolder just once.

On a normal ViewPager (and RecyclerView), it always loads those around, so those functions are called for the page on the left and on the right, too.

Is it possible to do it here too?
Maybe do it for current page, and soon after, to those around?
I ask this so that in case the pages are heavy, it will be smooth to load them, so the user won't notice we load more views.

I use the mLayoutManager.scrollToPositionWithOffset(1, 0); method，but the snap effect not work well.

In version 1.5 GravitySnapHelper respected paddings of RecyclerView, which it was attached to. For example, using helper Gravity.START to recycler with paddingLeft > 0 was correctly handled, i.e. this padding remained while snapping to next elements.
But in 2.0 this padding is ignored while snapping and this leads to layout break.

Example of used RecyclerView:

GravitySnapHelper(Gravity.START).attachToRecyclerView(recyclerView)

<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:layout_marginLeft="0dp"
    android:layout_marginRight="0dp"
    android:clipToPadding="false"
    android:nestedScrollingEnabled="false"
    android:paddingLeft="5dp"
    android:paddingRight="5dp" />

Layout of item used seems to be insignificant for this.

nice! I will provide a adapter class to use https://github.com/hackware1993/MagicIndicator in RecyclerViewSnap.

Hello,

Thi is my init screen

As soon as i scrol I am getting this:

I wanna be able to see one element in the middle and left and right the half of the other elements,
as soon as I reach the last element to be able to reach the whole rectangle not only the half

java.lang.IllegalStateException: An instance of OnFlingListener already set.
at android.support.v7.widget.SnapHelper.setupCallbacks(SnapHelper.java:115)
at android.support.v7.widget.SnapHelper.attachToRecyclerView(SnapHelper.java:103)
at com.github.rubensousa.recyclerviewsnap.SnapAdapter.onBindViewHolder(SnapAdapter.java:92)
at com.github.rubensousa.recyclerviewsnap.SnapAdapter.onBindViewHolder(SnapAdapter.java:20)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6508)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6541)
at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5484)
at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5750)
at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:285)
at android.support.v7.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:342)
at android.support.v7.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:358)
at android.support.v7.widget.GapWorker.prefetch(GapWorker.java:365)
at android.support.v7.widget.GapWorker.run(GapWorker.java:396)
at android.os.Handler.handleCallback(Handler.java:815)
at android.os.Handler.dispatchMessage(Handler.java:104)
at android.os.Looper.loop(Looper.java:194)
at android.app.ActivityThread.main(ActivityThread.java:5868)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1019)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:814)

Hey,
Thanks for sharing this example! I was playing around with the GravitySnapHelper and noticed an issue in RTL, which would cause the carousel to scroll back to the first item, regardless of how far along it was in the list of items.

After investigating a bit, I realized that this is because the support library's OrientationHelper always assumes that start is left and end is right (which doesn't hold true when in RTL). Ideally, this would be fixed in a support library update, but I've created a gist of my modifications to GravitySnapHelper if anyone else runs across this issue and would like to fix it temporarily. I haven't tested it too much with Gravity.END so please let me know if you notice any issues in my calculation there.

EDIT: Submitted to the AOSP bug tracker.

When I apply

android:padding="8dp"
android:clipToPadding="false"

to my RecyclerView, the list element does not "snap" but jumps between position with padding and without padding. Any ideas how to fix that? Thanks!

Thanks for the great library - it works perfectly!

Just one issue - at the moment I'm having to override its minSdkVersion (by using <uses-sdk tools:overrideLibrary="com.github.rubensousa.gravitysnaphelper"/> in a manifest file).

As the RecyclerViewSnap library is intended solely to augment the functionality of the RecyclerView v7 support library, could you reduce minSdkVersion to the same as the v7 libraries (e.g., 9), rather then the current version 15?

@rubensousa is it possible to have a dynamic gravity?
My intention is make to make the first item with Gravity.LEFT, the last with Gravity.RIGHT and all the others with Gravity.CENTER.

Hi there,
I'm using "LinearSnapHelper" for center snapping and when using "scrollToPosition" the RecyclerView's layout is not centering as if i were scrolling manually.
Tried "smoothScrollToPosition" as i found on Stack OverFlow but then i'm getting a blank RecyclerView.
Any solution?
Thanks!

In case of swiping up when we are focused on first element, SCROLL_STATE_IDLE is never called.
The same issue occurs when we are focused on second or third element and we swipe up really fast.
This problem does not occur in case of using LinearSnapHelper

I'm using the SnapHelper inside a recyclerView, but I found out that after scrolling the list for a bit (thus recycling its views) the RecyclerView automatically scrolls to the start of the list after any scroll motion, I mean, I scroll for instance, to the middle of the list. it suddenly goes to the first item, without any user interaction.

My code:

@Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
SnapHelper snapHelper = new GravitySnapHelper(Gravity.BOTTOM);
            productsRecyclerView.setOnFlingListener(null);
            snapHelper.attachToRecyclerView(productsRecyclerView);
}

An image demonstrating the issue: (sorry for the hogging, my mac sucks)
Imgur

Any thoughts on that ?

Here is my code:

SnapHelper snapHelper = new GravitySnapHelper(Gravity.START);
snapHelper.attachToRecyclerView(mRecyclerView);

but sometimes the issue occurs:

FATAL EXCEPTION: main
                                                                        Process: by.gramoplayer.android, PID: 12195
                                                                        java.lang.IllegalStateException: An instance of OnFlingListener already set.
                                                                            at android.support.v7.widget.SnapHelper.setupCallbacks(SnapHelper.java:114)
                                                                            at android.support.v7.widget.SnapHelper.attachToRecyclerView(SnapHelper.java:102)
                                                                            at com.github.rubensousa.gravitysnaphelper.GravitySnapHelper.attachToRecyclerView(GravitySnapHelper.java:47)

On /app/src/main/java/com/github/rubensousa/recyclerviewsnap/Adapter.java
how to get Application Context？
eg. I want to set a click to start new Intent or Make a Toast

Please example apk file

If you change the CardView's "layout_width" to 152dp which is in the adapter.xml,
then for the type which is "Snap center" in the demo app can't see the first and last item completely.

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="152dp"
    android:layout_height="wrap_content"
    android:layout_margin="4dp"
    android:clickable="true"
    android:foreground="?attr/selectableItemBackground"
    android:orientation="vertical">

I use RTL horizontal recyclerview with LinearLayoutManager and set GravitySnapHelper(Gravity.END) to it. But after apply a little scroll to left, the recyclerview scrolls to left automatically without any user touches.
I attached a gif following to show the problem:

Two lines of one scrolling,how to do,please give me some suggest,thank you!

GravirySnapHelper is awesome comparing to default LinearSnapHelper. But It would be perfect if it is support also Gravity.CENTER and simultaneously snap to first and last item if scrolled to one of the edges.
Regretfully LinearSnapHelper (though snap to center) can't snap to side items as your GravirySnapHelper does. So in order your GravirySnapHelper become far more superior you should add Gravity.CENTER. Thanks. Also I found that if I set snapToLastItem(true) it does not snap, though it snap to edge items by default.

Hi, nice effect but being able to fling which turns into linear scroll really ruins it, id like to mimic view pager physics, exactly how google play does it

thanks

This is only an issue with the snap-center functionality.
When i slide horizontally in the RecyclerView i cant slide vertically afterwards in the wrapping RecyclerView - it is like the horizontal RecyclerView steals the focus without clearing it afterwards. Please see this video:
http://i.imgur.com/5NwrR5s.gifv

I am still using version 1.5 because my project does not surpport androidx. I need to use GravityPagerSnapHelper and listening page selected,like this:
new GravityPagerSnapHelper(Gravity.START, true, new GravitySnapHelper.SnapListener() { @Override public void onSnap(int position) { Toast.makeText(holder.recyclerView.getContext(),"Snapped: "+ position,Toast.LENGTH_SHORT).show(); } }).attachToRecyclerView(holder.recyclerView);
it works well before last one. When I slide to the last one, it always automatically returns to the previous one. Is there any way to solve this problem?

Hi,
Can I create UI like this using Snap Helper?

I have a problem, at RecyclerView nested(嵌套) RecyclerView, It creates an interesting problem, It's been rocking there.
can you help me,thank you very much.
this is the video connection:
https://res.cloudinary.com/liuyuesha/video/upload/v1540888109/test_snap_b2aa9s.mp4

Part of the code:
@OverRide
public void onBindViewHolder(@nonnull RecyclerView.ViewHolder holder, final int position) {

    if (holder instanceof RecommendSongsHolder) {
     
        FindBean.ModulesBean modulesBean = mFindDataList.get(position);
        List<FindRecommendSongInfo> program_list = modulesBean.getData().getTrack_list();

        LinearLayoutManager manager = new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false);
        ((RecommendSongsHolder) holder).recyclerView.setLayoutManager(manager);
        ((RecommendSongsHolder) holder).recyclerView.setHasFixedSize(true);
        ((RecommendSongsHolder) holder).recyclerView.setNestedScrollingEnabled(false);
        RecommendSongsChildAdapter songsChildAdapter = new RecommendSongsChildAdapter(mContext, mActivity, program_list, mDeviceDialog);
        ((RecommendSongsHolder) holder).recyclerView.setAdapter(songsChildAdapter);

        ((RecommendSongsHolder) holder).recyclerView.setOnFlingListener(null);
        SnapHelper snapHelper = new GravitySnapHelper(Gravity.START);
        snapHelper.attachToRecyclerView(((RecommendSongsHolder) holder).recyclerView);

    }

Hi,

First of all, thank you for your work and appreciate it. This is more like a requirement than an issue.

So I have this requirement to snap the horizontal recyclerView to the left edge of the screen (exactly like latest play store update for movies) during the first scroll event. Does the library support this kind of requirement ? or do you have any bright work around's?

Adding Snaps dynamicaly and notifyDataSetChanged gives this above error what i'm doing so far is

 //add three more items
            progressBar.setVisibility(View.VISIBLE);
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {

                    List<App> apps = getApps();
                    snapAdapter.addSnap(new Snap(Gravity.CENTER_HORIZONTAL, "Paper Industry", apps));
                    snapAdapter.addSnap(new Snap(Gravity.CENTER_HORIZONTAL, "Wood Industry", apps));
                    snapAdapter.addSnap(new Snap(Gravity.CENTER_HORIZONTAL, "Cement Industry", apps));
                    snapAdapter.notifyDataSetChanged();
                    progressBar.setVisibility(View.GONE);
                }
            },3000);