Recycler View Example in Android

RecyclerViewActivity.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:id="@+id/activity_main"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"
                  android:paddingBottom="@dimen/activity_vertical_margin"
                  android:paddingLeft="@dimen/activity_horizontal_margin"
                  android:paddingRight="@dimen/activity_horizontal_margin"
                  android:paddingTop="@dimen/activity_vertical_margin"
                  android:orientation="vertical"
                  tools:context="com.example.bhaumik.recyclerviewdemo.MainActivity">

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

Note : You Can Use Card View else any layout to use this Xml.

Row_Item.xml

<?xml version="1.0" encoding="utf-8"?>
    < android.support.v7.widget.CardView
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            xmlns:app="http://schemas.android.com/apk/res-auto"
            android:layout_margin="10dp"
            app:cardCornerRadius="10dp"
            app:cardElevation="5dp"
            app:cardPreventCornerOverlap="true"
            app:cardBackgroundColor="@color/colorAccent">

      <TextView
        android:id="@+id/tv_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#FFF"
        android:textSize="20dp"
        android:padding="5dp"
        android:textStyle="bold"
        android:layout_marginTop="8dp"
        android:layout_marginBottom="8dp"
        android:text="Hello World"/>

</android.support.v7.widget.CardView>

RecyclerViewActivity.java

package com.bhaumik.programmingstudy;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ArrayList< String> version_names;
    RecyclerView recyclerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        LinearLayoutManager manager = new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false);
        recyclerView.setLayoutManager(manager);

        version_names = new ArrayList<>();

        version_names.add("Aestro");
        version_names.add("Blender");
        version_names.add("CupCake");
        version_names.add("Donut");
        version_names.add("Eclair");
        version_names.add("Froyo");
        version_names.add("GingerBread");
        version_names.add("HonyComb");
        version_names.add("Ice Cream Sendwich");
        version_names.add("JellyBean");
        version_names.add("Kitkat");
        version_names.add("Lolipop");
        version_names.add("Marshmallow");
        version_names.add("Noght");

        VersionAdapter versionAdapter = new VersionAdapter(version_names,MainActivity.this);
        recyclerView.setAdapter(versionAdapter);

    }
}

VersionAdapter.java

  

package com.pstudy.bhaumik.programmingstudy;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;


public class VersionAdapter extends RecyclerView.Adapter<VersionAdapter.MyViewHolders>{

    ArrayList<String> list_version;
    Context context;

    public VersionAdapter(ArrayList<String> list_version, Context context) {
        this.list_version = list_version;
        this.context = context;
    }

    @Override
    public MyViewHolders onCreateViewHolder(ViewGroup parent, int viewType) {

        View view  = LayoutInflater.from(context).inflate(R.layout.row_item,parent,false);

        MyViewHolders myViewHolders = new MyViewHolders(view);

        return myViewHolders;
    }

    @Override
    public void onBindViewHolder(final MyViewHolders holder, final int position) {

        holder.textView.setText(list_version.get(position));

        holder.textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context,"Select Version : " + list_version.get(position), Toast.LENGTH_SHORT).show();
            }
        });
    }

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

    public static class MyViewHolders extends RecyclerView.ViewHolder{

        TextView textView;


        public MyViewHolders(View itemView) {
            super(itemView);
            textView = (TextView) itemView.findViewById(R.id.tv_item);
        }
    }
}

Note : Add Library in build.gradle -> app file and copy and paste dependancy in build.gradle file compile 'com.android.support:recyclerview-v7:25.3.1' compile 'com.android.support:cardview-v7:25.3.1'