How to use RecyclerView inside NestedScrollView in Android?

This example demonstrates how do I use RecyclerView inside NestedScrollView in android.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Add the following dependency in the build.gradle (Module: app)
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:recyclerview-v7:28.0.0'
implementation 'com.android.support:cardview-v7:28.0.0'
implementation 'com.intuit.sdp:sdp-android:1.0.3'
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical"
   tools:context=".MainActivity">
   <androidx.core.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:scrollbars="none">
      <LinearLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:focusableInTouchMode="true"
         android:orientation="vertical">
   <ImageView
      android:id="@+id/sellerProduct"
      android:layout_width="match_parent"
      android:layout_height="200dp"
      android:adjustViewBounds="true"
      android:src="@drawable/iphone"
      android:scaleType="fitXY"
      android:contentDescription="@string/app_name" />
      <androidx.recyclerview.widget.RecyclerView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:scrollbars="vertical"
         android:id="@+id/productList"/>
      </LinearLayout>
   </androidx.core.widget.NestedScrollView>
</LinearLayout>
Step 3 − Create a layout resource file (list_item.xml) and add the following code −
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
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="wrap_content"
   android:orientation="vertical"
   app:cardElevation="2dp"
   app:cardUseCompatPadding="true">
   <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:gravity="center"
      android:orientation="vertical"
      android:padding="8dp">
      <ImageView
         android:id="@+id/phoneImage"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:adjustViewBounds="true"
         android:contentDescription="TODO"
         android:src="@drawable/iphone2" />
      <TextView
         android:id="@+id/phoneName"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="10dp"
         android:text="IPHONE"
         android:textColor="@color/colorPrimaryDark"
         android:textSize="12sp"
         android:textStyle="bold" />
   </LinearLayout>
</androidx.cardview.widget.CardView>
Step 4 − Create java class files as mentioned below and add the respective codes −
PhoneAdapter.java −
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import java.util.List;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
public class PhoneAdapter extends RecyclerView.Adapter<PhoneViewHolder>{
   private Context context;
   private List<ProductObject> productList;
   PhoneAdapter(Context context, List<ProductObject> productList) {
      this.context = context;
      this.productList = productList;
   }
   @NonNull
   @Override
   public PhoneViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
      View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
      return new PhoneViewHolder(view);
   }
   @Override
   public void onBindViewHolder(PhoneViewHolder holder, int position){
      ProductObject productObject = productList.get(position);
      int imageRes = getResourceId(context, productObject.getImagePath(), context.getPackageName());
      holder.phoneImage.setImageResource(imageRes);
      holder.phoneName.setText(productObject.getName());
   }
   @Override
   public int getItemCount() {
      return productList.size();
   }
   private static int getResourceId(Context context, String pVariableName, String pPackageName) throws RuntimeException {
      try {
         return context.getResources().getIdentifier(pVariableName, "drawable", pPackageName);
      } catch (Exception e) {
         throw new RuntimeException("Error getting Resource ID.", e);
      }
   }
}
PhoneViewHolder.java −
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
class PhoneViewHolder extends RecyclerView.ViewHolder {
   ImageView phoneImage;
   TextView phoneName;
   PhoneViewHolder(View itemView) {
      super(itemView);
      phoneName = itemView.findViewById(R.id.phoneName);
      phoneImage = itemView.findViewById(R.id.phoneImage);
   }
}
ProductObject.java −
class ProductObject {
   private String imagePath;
   private String name;
   ProductObject(String name, String imagePath) {
      this.imagePath = imagePath;
      this.name = name;
   }
   String getImagePath() {
      return imagePath;
   }
   String getName() {
      return name;
   }
}
Step 5 − Add the following code to src/MainActivity.java
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.GridLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.os.Bundle;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      RecyclerView bestRecyclerView = findViewById(R.id.productList);
      GridLayoutManager mGrid = new GridLayoutManager(this, 2);
      bestRecyclerView.setLayoutManager(mGrid);
      bestRecyclerView.setHasFixedSize(true);
      PhoneAdapter mAdapter = new PhoneAdapter(MainActivity.this, getProductTestData());
      bestRecyclerView.setAdapter(mAdapter);
   }
   private List<ProductObject> getProductTestData() {
      List<ProductObject> featuredProducts = new ArrayList<>();
      featuredProducts.add(new ProductObject("Iphone 6", "iphone2"));
      featuredProducts.add(new ProductObject("Iphone 6S", "iphone2"));
      featuredProducts.add(new ProductObject("Iphone 8S", "iphone2"));
      featuredProducts.add(new ProductObject("Iphone X", "iphone2"));
      featuredProducts.add(new ProductObject("Iphone XR", "iphone2"));
      featuredProducts.add(new ProductObject("Iphone XS", "iphone2"));
      return featuredProducts;
   }
}
Step 6 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">
   <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
   </application>
</manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −
Click here to download the project code.