RecyclerView doesn't animate when it's inside a NestedScrollView

My RecyclerView doesn't animate when scrolling. I've narrowed down the problem to the NestedScrollView that the RecyclerView is in. When the RecyclerView is outside the NestedScrollView it animates fine. But when it's in the NestedScrollView it doesn't. How can I animate the RecyclerView while keeping it in the NestedScrollView?

Here's the relevant layout:

<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/mainToolbar">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/tab_anim_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:background="@android:color/transparent"
app:elevation="0dp">
<com.google.android.material.appbar.MaterialToolbar
android:id="@+id/searchToolbar"
style="@style/Widget.MaterialComponents.Toolbar.Primary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
android:background="#A106A1"
android:elevation="2dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:layout_scrollFlags="scroll|enterAlways">
<!-- dummy to catch focus -->
<LinearLayout
android:layout_width="0px"
android:layout_height="0px"
android:focusable="true"
android:focusableInTouchMode="true" />
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginLeft="30dp"
android:layout_marginEnd="35dp"
android:layout_marginRight="35dp"
android:animateLayoutChanges="true"
android:layoutDirection="rtl"
app:iconifiedByDefault="true"
app:searchHintIcon="@null" />
</com.google.android.material.appbar.MaterialToolbar>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/myRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingHorizontal="1dp" />
</androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

And here's the animation applied in the RecyclerView adapter:

@Override        
public void onBindViewHolder(@NonNull MyViewHolder holder, int position) { //binds the data to the view
holder.container.setAnimation(AnimationUtils.loadAnimation(holder.container.getContext(),R.anim.fade_out));
holder.nameTextView.setText(labels[position]);
holder.packageNameTextView.setText(packageNames[position]);
holder.iconImageView.setImageDrawable(drawables[position]);
}

Update: Here it is using the CollapsingToolbarLayout instead of NestedScrollView. How do I make the toolbar scroll?

<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/mainToolbar">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/tab_anim_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
android:layout_marginLeft="40dp"
android:layout_marginRight="40dp"
android:background="@android:color/transparent"
app:elevation="0dp">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<com.google.android.material.appbar.MaterialToolbar
android:id="@+id/searchToolbar"
style="@style/Widget.MaterialComponents.Toolbar.Primary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
android:background="#A106A1"
android:elevation="2dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:layout_scrollFlags="scroll">
<!-- dummy to catch focus -->
<LinearLayout
android:layout_width="0px"
android:layout_height="0px"
android:focusable="true"
android:focusableInTouchMode="true" />
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginLeft="30dp"
android:layout_marginEnd="35dp"
android:layout_marginRight="35dp"
android:animateLayoutChanges="true"
android:layoutDirection="rtl"
app:iconifiedByDefault="true"
app:searchHintIcon="@null" />
</com.google.android.material.appbar.MaterialToolbar>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/myRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="3dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

It is not a good way to put RecyclerView inside NestedScrollView. If you want to make SearchBar above RecyclerView, you can check this.

You can also check this refference.

I checked your xml and modified it. It is working on my side. Please modify it according to your UI requirements.

N.B.: Check after populating data on recyclerview. First it may seem it is not working due to no data on recyclerview.

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
xmlns:android="http://schemas.android.com/apk/res/android">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/tab_anim_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center|top"
android:fitsSystemWindows="true"
android:background="@android:color/transparent"
android:theme="@style/AppTheme.AppBarOverlay"
app:elevation="0dp">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:toolbarId="@+id/toolbar_scrolling">
<LinearLayout
android:layout_width="0px"
android:layout_height="0px"
android:focusable="true"
android:focusableInTouchMode="true" />
<androidx.appcompat.widget.SearchView
android:id="@+id/searchView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="30dp"
android:layout_marginLeft="30dp"
android:layout_marginEnd="35dp"
android:layout_marginRight="35dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:animateLayoutChanges="true"
android:background="@drawable/rounded_bg"
android:layoutDirection="rtl"
app:iconifiedByDefault="true"
app:searchHintIcon="@null" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/myRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="3dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

In activity:

getSupportActionBar().setBackgroundDrawable(getResources()
.getDrawable(R.drawable.rounded_bg_action_bar));

rounded_bg_action_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/holo_purple" />
<corners android:bottomLeftRadius="20dp"
android:bottomRightRadius="20dp" />
</shape>

rounded_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="@android:color/holo_purple" />
<corners android:bottomLeftRadius="100dp"
android:bottomRightRadius="100dp" />
</shape>