Create Simple Recycler View or List in Android or Recycler View using Adapter and XML row item layout and Data from Web Services or Web API

Simple RecyclerView in Android for show simple listing into Android  App. If you are first time create simple listing screen than this example is best for you.

1. Step => Create simple Activity for example of simple RecyclerView or listing data. Create model class below.

package com.akhari.myapplication;

public class MovieModel {
    private String title, genre, year;

    public MovieModel(String title, String genre, String year) {
        this.title = title;
        this.genre = genre;
        this.year = year;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String name) {
        this.title = name;
    }

    public String getYear() {
        return year;
    }

    public void setYear(String year) {
        this.year = year;
    }

    public String getGenre() {
        return genre;
    }

    public void setGenre(String genre) {
        this.genre = genre;
    }
}

2. Step==> Create Simple adapter for set adapter of recycler View. 

With arrayList of MovieList Model class

package com.akhari.myapplication;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;

public class MoviesListAdapter  extends  

RecyclerView.Adapter<MoviesListAdapter.MyViewHolder> {
    private ArrayList<MovieModel> modelArrayList;
    private Context mContext;

    public MoviesListAdapter(ArrayList<MovieModel> modelArrayList, 

Context mContext) {
        this.modelArrayList = modelArrayList;
        this.mContext = mContext;
    }

    @Override     

    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.list_row, parent, false);

        return new MyViewHolder(itemView);
    }

    @Override 

    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        MovieModel movie = modelArrayList.get(position);
        holder.title.setText(movie.getTitle());
        holder.genre.setText(movie.getGenre());
        holder.year.setText(movie.getYear());
    }

    @Override    public int getItemCount() {
        return modelArrayList.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {
        public TextView title, year, genre;
        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            title = itemView.findViewById(R.id.title);
            genre = itemView.findViewById(R.id.genre);
            year = itemView.findViewById(R.id.year);
        }
    }
}
 

3. ==> Create Simple XML layout file for recycler view row layout. 

      Name of layout file list_row.xml

<?xml version="1.0" encoding="utf-8"?>

 <RelativeLayout  

    xmlns:android="http://schemas.android.com/apk/res/android"     

    android:layout_width="match_parent"     

    android:layout_height="wrap_content" 

    android:background="?android:attr/selectableItemBackground" 

    android:clickable="true" 

    android:focusable="true"     

    android:orientation="vertical"     

    android:paddingBottom="@dimen/row_padding_vertical" 

    android:paddingLeft="@dimen/activity_horizontal_margin" 

    android:paddingRight="@dimen/activity_horizontal_margin" 

    android:paddingTop="@dimen/row_padding_vertical">

    <TextView         

       android:id="@+id/title" 

       android:layout_width="match_parent" 

       android:layout_height="wrap_content" 

       android:layout_alignParentTop="true" 

       android:textColor="@color/title"         

       android:textSize="16dp" 

       android:textStyle="bold" />

    <TextView 

       android:id="@+id/genre"         

       android:layout_width="match_parent"         

       android:layout_height="wrap_content" 

       android:layout_below="@id/title" />

    <TextView         

       android:id="@+id/year"         

       android:layout_width="wrap_content" 

       android:layout_height="wrap_content"         

       android:layout_alignParentRight="true" 

       android:textColor="@color/year" />

</RelativeLayout> 

4. ==> Create MainActivity file for recycler view show Movie list with title,
           subtitle, and year. Using Web API or web services and set data on list
package com.akhari.myapplication;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import androidx.recyclerview.widget.DefaultItemAnimator;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.akhari.myapplication.AppGlobals;
import com.akhari.myapplication.R;
import com.akhari.myapplication.adapter.NewsListAdapter;
import com.akhari.myapplication.database.DeoliLiveDatabase;
import com.akhari.myapplication.interactor.InteractorImpl;
import com.akhari.myapplication.interactor.ResponsePacket;
import com.akhari.myapplication.interfaces.IntegratorConst;
import com.akhari.myapplication.interfaces.OnResponseListener;
import com.akhari.myapplication.model.NewsInfo;
import com.google.gson.JsonObject;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    ProgressDialog progress;
    private ArrayList<MovieModel> movieList = new ArrayList<>();
    private RecyclerView recyclerView;
    private MoviesListAdapter mMoviesListAdapter;

    @Override
    public View onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        progress=new ProgressDialog(getActivity());

        recyclerView = findViewById(R.id.recycler_view);

        mMoviesListAdapter = new MoviesListAdapter(movieList,this);
        RecyclerView.LayoutManager mLayoutManager =

         new LinearLayoutManager(getApplicationContext());

        recyclerView.setLayoutManager(mLayoutManager);
        recyclerView.setItemAnimator(new DefaultItemAnimator());
        recyclerView.setAdapter(mMoviesListAdapter);
        prepareMovieList();
    }

    private void prepareMovieList() {

    if(AppGlobals.getInstance().isOnline(getActivity())) {
            getList(true);
        }
    }

    public void getList(boolean isShowProgress){
        if(isShowProgress){
            progress.setMessage("Loading");
            progress.setProgressStyle(ProgressDialog.THEME_DEVICE_DEFAULT_LIGHT);
            progress.setIndeterminate(true);
            progress.setCancelable(false);
            progress.show();
        }
        try {
            JsonObject jsonObject = new JsonObject();
            new InteractorImpl(getActivity(), this, IntegratorConst.Code_URL,
        IntegratorConst.Tag_URL)
                    .makeJsonPostRequest(IntegratorConst.Method_URL, jsonObject, false);

        }catch (Exception ex){
            ex.printStackTrace();
        }
    }

    @Override
    public void onSuccess(int requestCode, ResponsePacket responsePacket) {
        if(progress!=null && progress.isShowing()){
            progress.dismiss();
        }
        try {
             if(IntegratorConst.Code_DeoliWall==requestCode){
                if(responsePacket.getErrorCode()==0){
                    liveDatabase.deleteDeoliWalls();
                    for(int i=0;i<responsePacket.getValues().
                getMovieModelInfo().size();i++) {
            MovieModel movie = new MovieModel(
                responsePacket.getValues().
                getMovieModelInfo().get(i).getTitle(),
                               responsePacket.getValues().
                getMovieModelInfo().get(i).getDescription(),
               responsePacket.getValues().getMovieModelInfo().get(i).getYear());
                   movieList.add(movie);
                    }
        mMoviesListAdapter.notifyDataSetChanged();
                }
            }
        }catch (NullPointerException nxe){
            nxe.printStackTrace();
        }
    }

    @Override
    public void onError(int requestCode) {
        if(progress!=null && progress.isShowing()){
            progress.dismiss();
        }
        Toast.makeText(getActivity(),"Please check your internet or please try again",
    Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }
}

Create Simple Recycler View or List in Android or Recycler View using Adapter and XML row item layout

Simple RecyclerView in Android for show simple listing into Android  App. If you are first time create simple listing screen than this example is best for you.

1. Step => Create simple Activity for example of simple RecyclerView or listing data. Create model class below.

package com.akhari.myapplication;

public class MovieModel {
    private String title, genre, year;

    public MovieModel(String title, String genre, String year) {
        this.title = title;
        this.genre = genre;
        this.year = year;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String name) {
        this.title = name;
    }

    public String getYear() {
        return year;
    }

    public void setYear(String year) {
        this.year = year;
    }

    public String getGenre() {
        return genre;
    }

    public void setGenre(String genre) {
        this.genre = genre;
    }
}

2. Step==> Create Simple adapter for set adapter of recycler View. 

With arrayList of MovieList Model class

package com.akhari.myapplication;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;

public class MoviesListAdapter  extends  

RecyclerView.Adapter<MoviesListAdapter.MyViewHolder> {
    private ArrayList<MovieModel> modelArrayList;
    private Context mContext;

    public MoviesListAdapter(ArrayList<MovieModel> modelArrayList, 

Context mContext) {
        this.modelArrayList = modelArrayList;
        this.mContext = mContext;
    }

    @Override     

    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.list_row, parent, false);

        return new MyViewHolder(itemView);
    }

    @Override 

    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        MovieModel movie = modelArrayList.get(position);
        holder.title.setText(movie.getTitle());
        holder.genre.setText(movie.getGenre());
        holder.year.setText(movie.getYear());
    }

    @Override    public int getItemCount() {
        return modelArrayList.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {
        public TextView title, year, genre;
        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            title = itemView.findViewById(R.id.title);
            genre = itemView.findViewById(R.id.genre);
            year = itemView.findViewById(R.id.year);
        }
    }
}
 

3. ==> Create Simple XML layout file for recycler view row layout. 

      Name of layout file list_row.xml

<?xml version="1.0" encoding="utf-8"?>

 <RelativeLayout  

    xmlns:android="http://schemas.android.com/apk/res/android"     

    android:layout_width="match_parent"     

    android:layout_height="wrap_content" 

    android:background="?android:attr/selectableItemBackground" 

    android:clickable="true" 

    android:focusable="true"     

    android:orientation="vertical"     

    android:paddingBottom="@dimen/row_padding_vertical" 

    android:paddingLeft="@dimen/activity_horizontal_margin" 

    android:paddingRight="@dimen/activity_horizontal_margin" 

    android:paddingTop="@dimen/row_padding_vertical">

    <TextView         

       android:id="@+id/title" 

       android:layout_width="match_parent" 

       android:layout_height="wrap_content" 

       android:layout_alignParentTop="true" 

       android:textColor="@color/title"         

       android:textSize="16dp" 

       android:textStyle="bold" />

    <TextView 

       android:id="@+id/genre"         

       android:layout_width="match_parent"         

       android:layout_height="wrap_content" 

       android:layout_below="@id/title" />

    <TextView         

       android:id="@+id/year"         

       android:layout_width="wrap_content" 

       android:layout_height="wrap_content"         

       android:layout_alignParentRight="true" 

       android:textColor="@color/year" />

</RelativeLayout> 

4. ==> Create MainActivity file for recycler view show Movie list with title,
           subtitle, and year.

package com.akhari.myapplication;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.DefaultItemAnimator;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private ArrayList<MovieModel> movieList = new ArrayList<>();
    private RecyclerView recyclerView;
    private MoviesListAdapter mMoviesListAdapter;
    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = findViewById(R.id.recycler_view);

        mMoviesListAdapter = new MoviesListAdapter(movieList,this);
        RecyclerView.LayoutManager mLayoutManager =  

         new LinearLayoutManager(getApplicationContext());

        recyclerView.setLayoutManager(mLayoutManager);
        recyclerView.setItemAnimator(new DefaultItemAnimator());
        recyclerView.setAdapter(mMoviesListAdapter);
        prepareMovieList();
    }

    private void prepareMovieList() {
        MovieModel movie = new MovieModel("Fury Road", 

                               "Action", "2018");
        movieList.add(movie);

        movie = new MovieModel("Inside",  

                    "Kids & Family", "2018");
        movieList.add(movie);

        movie = new MovieModel("Star Wars", 

                    "Action", "2019");
        movieList.add(movie);

        movie = new MovieModel("Shaun the Sheep", 

                    "Animation", "2019");
        movieList.add(movie);

        movie = new MovieModel("Martian",  

                    "Science Fiction", "2019");
        movieList.add(movie);

        movie = new MovieModel("Mission: 

                    Impossible Rogue Nation", "Action", "2019");

        mMoviesListAdapter.notifyDataSetChanged();
    }
}