如何在 NestedScrollView 中使用 RecyclerView？

Question

How to use RecyclerView inside NestedScrollView ? RecyclerView content is not visible after setting adapter.

UPDATE layout code updated.

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="@dimen/keyline_1">

    </RelativeLayout>

    <View
        android:id="@+id/separator"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#e5e5e5" />

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

</LinearLayout>

</android.support.v4.widget.NestedScrollView>

Answer 1

Replace your recyclerView with,

<android.support.v7.widget.RecyclerView
    android:id="@+id/conversation"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />

here,

app:layout_behavior="@string/appbar_scrolling_view_behavior"

will manage the rest of things.

One more thing, no need to put your recyclerView inside NestedScrollView

Answer 2

UPDATE 1

Since Android Support Library 23.2.0 there were added method setAutoMeasureEnabled(true) for LayoutManagers. It makes RecyclerView to wrap it's content and works like a charm.
http://android-developers.blogspot.ru/2016/02/android-support-library-232.html

So just add something like this:

    LayoutManager layoutManager = new LinearLayoutManager(this);
    layoutManager.setAutoMeasureEnabled(true);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setNestedScrollingEnabled(false);

UPDATE 2

Since 27.1.0 setAutoMeasureEnabled is deprecated, so you should provide custom implementation of LayoutManager with overridden method isAutoMeasureEnabled()

But after many cases of usage RecyclerView I strongly recommend not to use it in wrapping mode , cause this is not what it is intended for. Try to refactor whole your layout using normal single RecyclerView with several items' types. Or use approach with LinearLayout that I described below as last resort

Old answer (not recommended)

You can use RecyclerView inside NestedScrollView . First of all you should implement your own custom LinearLayoutManager , it makes your RecyclerView to wrap its content. For example:

public class WrappingLinearLayoutManager extends LinearLayoutManager
{

    public WrappingLinearLayoutManager(Context context) {
        super(context);
    }

    private int[] mMeasuredDimension = new int[2];

    @Override
    public boolean canScrollVertically() {
        return false;
    }

    @Override
    public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state,
            int widthSpec, int heightSpec) {
        final int widthMode = View.MeasureSpec.getMode(widthSpec);
        final int heightMode = View.MeasureSpec.getMode(heightSpec);

        final int widthSize = View.MeasureSpec.getSize(widthSpec);
        final int heightSize = View.MeasureSpec.getSize(heightSpec);

        int width = 0;
        int height = 0;
        for (int i = 0; i < getItemCount(); i++) {
            if (getOrientation() == HORIZONTAL) {
                measureScrapChild(recycler, i,
                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                        heightSpec,
                        mMeasuredDimension);

                width = width + mMeasuredDimension[0];
                if (i == 0) {
                    height = mMeasuredDimension[1];
                }
            } else {
                measureScrapChild(recycler, i,
                        widthSpec,
                        View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
                        mMeasuredDimension);

                height = height + mMeasuredDimension[1];
                if (i == 0) {
                    width = mMeasuredDimension[0];
                }
            }
        }

        switch (widthMode) {
            case View.MeasureSpec.EXACTLY:
                width = widthSize;
            case View.MeasureSpec.AT_MOST:
            case View.MeasureSpec.UNSPECIFIED:
        }

        switch (heightMode) {
            case View.MeasureSpec.EXACTLY:
                height = heightSize;
            case View.MeasureSpec.AT_MOST:
            case View.MeasureSpec.UNSPECIFIED:
        }

        setMeasuredDimension(width, height);
    }

    private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
            int heightSpec, int[] measuredDimension) {

        View view = recycler.getViewForPosition(position);
        if (view.getVisibility() == View.GONE) {
            measuredDimension[0] = 0;
            measuredDimension[1] = 0;
            return;
        }
        // For adding Item Decor Insets to view
        super.measureChildWithMargins(view, 0, 0);
        RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();
        int childWidthSpec = ViewGroup.getChildMeasureSpec(
                widthSpec,
                getPaddingLeft() + getPaddingRight() + getDecoratedLeft(view) + getDecoratedRight(view),
                p.width);
        int childHeightSpec = ViewGroup.getChildMeasureSpec(
                heightSpec,
                getPaddingTop() + getPaddingBottom() + getDecoratedTop(view) + getDecoratedBottom(view),
                p.height);
        view.measure(childWidthSpec, childHeightSpec);

        // Get decorated measurements
        measuredDimension[0] = getDecoratedMeasuredWidth(view) + p.leftMargin + p.rightMargin;
        measuredDimension[1] = getDecoratedMeasuredHeight(view) + p.bottomMargin + p.topMargin;
        recycler.recycleView(view);
    }
}

After that use this LayoutManager for your RecyclerView

recyclerView.setLayoutManager(new WrappingLinearLayoutManager(getContext()));

But you also should call those two methods:

recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);

Here setNestedScrollingEnabled(false) disable scrolling for RecyclerView , so it doesn't intercept scrolling event from NestedScrollView . And setHasFixedSize(false) determine that changes in adapter content can change the size of the RecyclerView

Important note: This solution is little buggy in some cases and has problems with perfomance, so if you have a lot of items in your RecyclerView I'd recommend to use custom LinearLayout -based implementation of list view, create analogue of Adapter for it and make it behave like ListView or RecyclerView

Answer 3

1. You need to use support library 23.2.0 (or) above

2. and RecyclerView height will be wrap_content .

3. recyclerView.setNestedScrollingEnabled(false)

But by doing this the recycler pattern doesn't work . (ie all the views will be loaded at once because wrap_content needs the height of complete RecyclerView so it will draw all child Views at once. No view will be recycled). Try not to use this pattern unless it is really required. Try to use viewType and add all other views that need to scroll to RecyclerView rather than using RecyclerView in Scrollview . The performance impact will be very high.

To make it simple "it just acts as LinearLayout with all the child views"

Answer 4

You can use android:fillViewport="true" to make NestedScrollView measure the RecyclerView . The RecyclerView will fill the remaining height. so if you want to scroll the NestScrollView , you can set the RecyclerView 's minHeight .

Answer 5

Simply adding recyclerView.setNestedScrollingEnabled(false); before setAdapter itself worked for me. I didn't add app:layout_behavior="@string/appbar_scrolling_view_behavior" anywhere & didn't set any custom layout manager

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="15dp"
            android:layout_marginRight="15dp"
            android:orientation="vertical">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColor="@color/white"
                android:text="Some Text..."
                android:padding="15dp" />

        </LinearLayout>

        <LinearLayout
            android:orientation="vertical"
            android:padding="15dp"
            android:layout_marginTop="10dp"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="Quick Links"
                android:textColor="@color/black"
                android:textStyle="bold"
                android:textAllCaps="true"
                android:paddingLeft="20dp"
                android:drawableLeft="@drawable/ic_trending_up_black_24dp"
                android:drawablePadding="10dp"
                android:layout_marginBottom="10dp"
                android:textSize="16sp"/>

            <View
                android:layout_width="fill_parent"
                android:layout_height="1dp"
                android:background="#efefef"/>

            <android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
                android:id="@+id/recyclerview"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />
        </LinearLayout>

    </LinearLayout>

</android.support.v4.widget.NestedScrollView>

Answer 6

This is what working for me

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_recycler_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</android.support.v4.widget.NestedScrollView>

Answer 7

For androidx it's called androidx.core.widget.NestedScrollView - and it scrolls alike butter with properties isScrollContainer and measureAllChildren enabled:

<!-- Scrolling Content -->
<androidx.core.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"

    android:isScrollContainer="true"
    android:measureAllChildren="true"

    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fastScrollEnabled="true"
        android:scrollbarStyle="insideInset"
        android:scrollbars="vertical"
        android:splitMotionEvents="false"
        android:verticalScrollbarPosition="right"/>

</androidx.core.widget.NestedScrollView>

Answer 8

There is a simple and testing code u may check

<android.support.v4.widget.NestedScrollView
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fillViewport="true"
     app:layout_behavior="@string/appbar_scrolling_view_behavior">
    <android.support.v7.widget.RecyclerView
           android:layout_width="match_parent"
           android:layout_height="match_parent"/>
   </android.support.v4.widget.NestedScrollView>

Answer 9

Try to use this library - https://github.com/serso/android-linear-layout-manager .

LayoutManager of the library makes RecyclerView wraps its contents. In this case RecyclerView will be "as big as inner views", so it will not have a scrollbars and user will use scrolling abilities of NestedScrollView. Therefore, it will not be ambiguous like "scrollable inside scrollable".

Answer 10

I used RecyclerView inside a NestedScrollView and it worked for me. The only gotcha I had to keep in mind was that a NestedScrollView takes only one child view. So in my case I used of LienearLayout viewgroup which was housing my RecyclerView plus a number of other views that I needed.

I experience one issue putting my RecyclerView inside the NestedScrollView. I realized that scrolling the content of my RecyclerView slacked.

I later realized that my RecyclerView was receiving the scrolling event and therefore was conflicting with the scrolling behavior of the NestedScrollView.

So to solve that problem, I had to disable the scroll functionality of my RecyclerView with this method movieListNewRecyclerView.setNestedScrollingEnabled(false);

You can checkout my Instagram for a short video of what I actually did. This is my instagram handle ofelix03

Answer 11

Here is the code that I'm using to avoid scrolling issues:

mRecyclerView = (RecyclerView) view.findViewById(android.R.id.list);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
mRecyclerView.getLayoutManager().setAutoMeasureEnabled(true);
mRecyclerView.setNestedScrollingEnabled(false);
mRecyclerView.setHasFixedSize(false);

Answer 12

I have Viewpager and RecyclerView inside the NestedScrollView. After adding below lines

recyclerView.setNestedScrollingEnabled(false);
recyclerView.setHasFixedSize(false);

I solved slow scroll and scroll lag issue.

Answer 13

if you want to use RecyclerView in NestedScrollView this is a simple tricky, just set :

RecyclerView

• recyclerView.setHasFixedSize(false) (java/kt)

• android:nestedScrollingEnabled="false"

• android:layout_height="wrap_content"

• android:overScrollMode="never"

NestedScrollView

• android:fillViewport="true"

this is work for me, and you can use many RecyclerView in NestedScrollView with this too.

Answer 14

If you are using RecyclerView-23.2.1 or later. Following solution will work just fine:

In your layout add RecyclerView like this:

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

And in your java file:

RecyclerView mRecyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
LinearLayoutManager layoutManager=new LinearLayoutManager(getContext());
layoutManager.setAutoMeasureEnabled(true);
mRecyclerView.setLayoutManager(layoutManager);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setAdapter(new YourListAdapter(getContext()));

Here layoutManager.setAutoMeasureEnabled(true); will do the trick.

Check out this issue and this developer blog for more information.

Answer 15

If you are using RecyclerView ScrollListener inside NestedScrollView , addOnScrollListener listener not working properly if you are used both.

Use this code.

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrollStateChanged(@NonNull RecyclerView recyclerView, int newState) {
            super.onScrollStateChanged(recyclerView, newState); 
              ......
        }
    });

this code working fine RecyclerView ScrollListener inside NestedScrollView .

thanks

Answer 16

You can't use a recycler view within a nested scroll view. It's not intended to contain further scrollable views but it's because it's a child of a scrolling layout itself that you need the nested scrolling view. I had the same issue but in the end I moved my textview to be a headerview within the recyclerview, made the recyclerview a direct child of the coordinator layout and deleted the nested scroll view. Then all my problems were gone.

Answer 17

One solution to keep the recycling feature of the recyclerview and avoiding the recyclerview to load all your data is setting a fix height in the recyclerview itself. By doing this the recyclerview is limited only to load as much as its height can show the user thus recycling its element if ever you scroll to the bottom/top.

Answer 18

There are a lot of good answers. The key is that you must set nestedScrollingEnabled to false . As mentioned above you can do it in java code:

mRecyclerView.setNestedScrollingEnabled(false);

But also you have an opportunity to set the same property in xml code ( android:nestedScrollingEnabled="false" ):

 <android.support.v7.widget.RecyclerView
     android:id="@+id/recyclerview"
     android:nestedScrollingEnabled="false"
     android:layout_width="match_parent"
     android:layout_height="match_parent" />

Answer 19

nestedScrollView.setNestedScrollingEnabled(true);

mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
        @Override
        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
            super.onScrolled(recyclerView, dx, dy);
            //...
        }
    });


<androidx.core.widget.NestedScrollView
    android:id="@+id/nested"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fillViewport="true"
    android:layout_below="@id/appBarLayout_orders"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

    <androidx.constraintlayout.widget.ConstraintLayout ...

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"/>

Answer 20

I had to implement CoordinatorLayout with toolbar scrolling and it just took me all the day messing around this. I've got it working by removing NestedScrollView at all. So I'm just using RelativeLayout at the root.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/rv_nearby"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</RelativeLayout>

Answer 21

do not use recyclerView inside NestedScrollView. it may cause cascading problems! I suggest using ItemViewTypes in RecyclerView for handling multiple kinds of views. just add a RecyclerView with match_parent width and height. then in your recyclerViewAdapter override getItemViewType and use position for handling what layout to be inflated. after that you can handle your view holder by using onBindViewHolder method.

Answer 22

You can use my sample code

    <?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <LinearLayout
        android:id="@+id/fl_all_brand"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:context=".view.fragment.AllBrandFragment">

        <androidx.core.widget.NestedScrollView
            android:id="@+id/parent"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            >

            <LinearLayout
                android:id="@+id/fl_all_brand1"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"

                android:orientation="vertical">


                <!--<include layout="@layout/content_home" />-->

                <TextView
                    android:id="@+id/tv_title"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginStart="@dimen/_15sdp"
                    android:layout_marginTop="@dimen/_20sdp"
                    android:fontFamily="@font/lexend_semibold"
                    android:text="@string/DISPLAY_LIGHTS"
                    android:textColor="@color/gray_scale_placehold"
                    android:textSize="@dimen/_16ssp" />


                <LinearLayout
                    android:id="@+id/recyclerLayout"
                    android:layout_width="match_parent"
                    android:layout_height="@dimen/_280sdp">


                    <androidx.recyclerview.widget.RecyclerView
                        android:id="@+id/recyclerviewobj"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:layout_marginStart="@dimen/_10sdp"
                        android:layout_marginTop="@dimen/_20sdp"
                        android:layout_marginEnd="@dimen/_10sdp"
                        android:orientation="horizontal"
                        android:nestedScrollingEnabled="false"
                        android:layout_marginBottom="@dimen/_20sdp"
                        app:layout_behavior="@string/appbar_scrolling_view_behavior"
                        app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"

                        />
                </LinearLayout>



                <TextView
                    android:id="@+id/notfound"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_marginStart="@dimen/_15sdp"
                    android:layout_marginTop="@dimen/_20sdp"
                    android:layout_marginBottom="@dimen/_20sdp"
                    android:fontFamily="@font/lexend_semibold"
                    android:text="@string/DISPLAY_LIGHTS"
                    android:gravity="center"
                    android:visibility="gone"
                    android:textColor="?attr/hintTextColors"
                    android:textSize="@dimen/_12ssp" />
                <TextView
                    android:id="@+id/recommendTitle"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_above="@+id/addDeviceLayout"
                    android:layout_below="@+id/recyclerviewobj"
                    android:layout_marginStart="@dimen/_16sdp"
                    android:layout_marginTop="@dimen/_7sdp"
                    android:fontFamily="@font/lexend_semibold"
                    android:text="@string/RECOMMENDATION"
                    android:textColor="@color/gray_scale_placehold"
                    android:textSize="@dimen/_16ssp" />

                <LinearLayout
                    android:id="@+id/addDeviceLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_above="@+id/createRoomLayout"
                    android:layout_marginTop="@dimen/_14sdp"
                    android:background="?attr/buttonTextColor"
                    android:orientation="vertical"
                    tools:visibility="visible">

                    <ImageView
                        android:id="@+id/addBtn"
                        android:layout_width="@dimen/_28sdp"
                        android:layout_height="@dimen/_28sdp"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_8sdp"
                        android:src="@drawable/ic_thermostates_icon"
                        app:tint="?attr/colorPrimaryDark" />

                    <TextView
                        android:id="@+id/addDevice"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_5sdp"
                        android:fontFamily="@font/lexend_bold"
                        android:text="@string/PROGRAM_DISPLAY_SENSOR_PLUGS"
                        android:textColor="?attr/colorPrimaryDark"
                        android:textSize="@dimen/_12ssp" />

                    <TextView
                        android:id="@+id/summry"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_8sdp"
                        android:layout_marginBottom="@dimen/_6sdp"
                        android:fontFamily="@font/lexend_medium"
                        android:text="@string/DISPLAY_SENSOR_SUB_TITLE"
                        android:textColor="?attr/secondaryTextColor"
                        android:textSize="@dimen/_9ssp" />

                    <RelativeLayout
                        android:id="@+id/container3"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_6sdp"
                        android:layout_marginTop="@dimen/_6sdp"
                        android:layout_marginBottom="@dimen/_10sdp">

                        <TextView
                            android:id="@+id/get_started"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_centerVertical="true"
                            android:layout_marginStart="@dimen/_10sdp"
                            android:fontFamily="@font/lexend_semibold"
                            android:text="@string/RECOMMENDED_GROUP"
                            android:textAllCaps="true"
                            android:textSize="@dimen/_9ssp" />

                        <ImageView
                            android:id="@+id/forward_arrow"
                            android:layout_width="@dimen/_16sdp"
                            android:layout_height="@dimen/_16sdp"
                            android:layout_alignParentEnd="true"
                            android:layout_marginRight="@dimen/_20sdp"
                            android:src="@drawable/ic_forward_arrow"
                            app:tint="?attr/colorPrimary" />

                    </RelativeLayout>
                </LinearLayout>

                <LinearLayout
                    android:id="@+id/createRoomLayout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignParentBottom="true"
                    android:layout_marginTop="@dimen/_9sdp"
                    android:layout_marginBottom="@dimen/_20sdp"
                    android:background="?attr/buttonTextColor"
                    android:orientation="vertical"
                    tools:visibility="visible">

                    <ImageView
                        android:id="@+id/addBtnRoom"
                        android:layout_width="@dimen/_28sdp"
                        android:layout_height="@dimen/_28sdp"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_8sdp"
                        android:src="@drawable/rgb_light_new"
                        app:tint="?attr/colorPrimaryDark" />

                    <TextView
                        android:id="@+id/addRooms"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_5sdp"
                        android:fontFamily="@font/lexend_bold"
                        android:text="@string/DISPLAY_RGBW"
                        android:textColor="?attr/colorPrimaryDark"
                        android:textSize="@dimen/_12ssp" />

                    <TextView
                        android:id="@+id/summry1"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_16sdp"
                        android:layout_marginTop="@dimen/_8sdp"
                        android:layout_marginBottom="@dimen/_6sdp"
                        android:fontFamily="@font/lexend_medium"
                        android:text="@string/PROGRAM_DISPLAY_RGB_MSG"
                        android:textColor="?attr/secondaryTextColor"
                        android:textSize="@dimen/_9ssp" />

                    <RelativeLayout
                        android:id="@+id/container99"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:layout_marginStart="@dimen/_6sdp"
                        android:layout_marginTop="@dimen/_6sdp"
                        android:layout_marginBottom="@dimen/_10sdp">

                        <TextView
                            android:id="@+id/get_started_1"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_centerVertical="true"
                            android:layout_marginStart="@dimen/_10sdp"
                            android:fontFamily="@font/lexend_semibold"
                            android:text="@string/RECOMMENDED_GROUP"
                            android:textAllCaps="true"
                            android:textSize="@dimen/_9ssp" />

                        <ImageView
                            android:id="@+id/forward_arrow1"
                            android:layout_width="@dimen/_16sdp"
                            android:layout_height="@dimen/_16sdp"
                            android:layout_alignParentEnd="true"
                            android:layout_marginRight="@dimen/_20sdp"
                            android:src="@drawable/ic_forward_arrow"
                            app:tint="?attr/colorPrimary" />

                    </RelativeLayout>
                </LinearLayout>




            </LinearLayout>

        </androidx.core.widget.NestedScrollView>
    </LinearLayout>

</layout>

here use this property of recyclerview

app:layout_behavior="@string/appbar_scrolling_view_behavior"

and turned off recyclerview nested scrolling like this

android:nestedScrollingEnabled="false"

Answer 23

In my case, this is what works for me

• Put android:fillViewport="true" inside NestedScrollView.

• Make the height of RecyclerView to wrap_content, ie android:layout_height="wrap_content"

• Add this in RecyclerView android:nestedScrollingEnabled="false"

OR

Programmatically, in your Kotlin class

recyclerView.isNestedScrollingEnabled = false

mRecyclerView.setHasFixedSize(false)

Answer 24

I have used this awesome extension (written in kotlin but can be also used in Java)

https://github.com/Widgetlabs/expedition-nestedscrollview

Basically you get the NestedRecyclerView inside any package lets say utils in your project, then just create your recyclerview like

 <com.your_package.utils.NestedRecyclerView
      android:id="@+id/rv_test"
      android:layout_width="match_parent"
      android:layout_height="match_parent" />

Check this awesome article by Marc Knaup

https://medium.com/widgetlabs-engineering/scrollable-nestedscrollviews-inside-recyclerview-ca65050d828a

Answer 25

For my case the child of NestedScrollview is ConstraintLayout. It is not working as expected i replaced it to LinearLayout. Maybe it helps someone.

<androidx.core.widget.NestedScrollView 
  android:id="@+id/nestedScrollView" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent">

  <LinearLayout 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:descendantFocusability="blocksDescendants">

    <androidx.recyclerview.widget.RecyclerView
      android:id="@+id/recyclerView"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:nestedScrollingEnabled="false" />

  </LinearLayout>

</androidx.core.widget.NestedScrollView>

Answer 26

At least as far back as Material Components 1.3.0-alpha03, it doesn't matter if the RecyclerView is nested (in something other than a ScrollView or NestedScrollView). Just put app:layout_behavior="@string/appbar_scrolling_view_behavior" on its top level parent that's a sibling of the AppBarLayout in the CoordinatorLayout.

This has been working for me when using a single Activity architecture with Jetpack Naviagation, where all Fragments are sharing the same AppBar from the Activity's layout. I make the FragmentContainer the direct child of the CoordinatorLayout that also contains the AppBarLayout, like below. The RecyclerViews in the various fragments are scrolling normally and the AppBar folds away and reappears as expected.

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:id="@+id/coordinatorLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.fragment.app.FragmentContainerView
            android:id="@+id/nav_host_fragment"
            android:name="androidx.navigation.fragment.NavHostFragment"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            app:defaultNavHost="true"
            app:navGraph="@navigation/mobile_navigation"/>

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appbar_layout"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:liftOnScroll="true">

            <androidx.appcompat.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="?attr/actionBarSize"
                android:theme="?attr/actionBarTheme"
                app:layout_scrollFlags="scroll|enterAlways|snap" />

        </com.google.android.material.appbar.AppBarLayout>

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

liftOnScroll (used to for app bars to look like they have zero elevation when at the top of the page) works if each fragment passes the ID of its RecyclerView to AppBarLayout.liftOnScrollTargetViewId in Fragment.onResume . Or pass 0 if the Fragment doesn't scroll.

Answer 27

RecyclerView with NestedScrollView

    <android.support.v7.widget.RecyclerView
    android:id="@+id/rv"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />