Recyclerview Radiobutton Android Tutorial

build.gradle
-----------------
 compile 'com.android.support:recyclerview-v7:25.3.1'
    compile 'com.android.support:cardview-v7:25.3.1'
    compile 'com.jakewharton:butterknife:8.5.1'
    annotationProcessor 'com.jakewharton:butterknife-compiler:8.5.1'
activity_main.xml
------------------------
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context="com.anilsoft.anil.MainActivity">

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

</RelativeLayout>

layout_data.xml

--------------------

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"

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

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:orientation="vertical"

    card_view:cardElevation="5dp"

    card_view:cardUseCompatPadding="true">

    <RadioButton

        android:id="@+id/rview_radiobutton"

        android:layout_width="50dp"

        android:layout_height="50dp"

        android:scaleType="fitXY" />

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="vertical"

        android:padding="15dp">

        <TextView

            android:id="@+id/textView_rvname"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginLeft="74dp"

            android:layout_marginStart="74dp"

            android:text="TextView"

            android:textSize="17sp" />

        <TextView

            android:id="@+id/textView_rvloc"

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:layout_marginLeft="74dp"

            android:layout_marginStart="74dp"

            android:text="A"

            android:textSize="17sp" />

    </LinearLayout>

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

Utils.Java

----------------

package com.anilsoft.anil.utils;

import com.anilsoft.anil.model.Student;

import java.util.ArrayList;

import java.util.List;

/**

 * Created by Anil on 8/14/2017.

 */

public class Utils {

    public static List<Student> loadStudentData() {

        List<Student> llStudentList = new ArrayList<>();

        llStudentList.add(new Student("Anil", "Tadipatri,RayalaSeema"));

        llStudentList.add(new Student("Aswartha", "Jammalamadugu,RayalaSeema"));

        llStudentList.add(new Student("Jayachandra", "Chittor,RayalaSeema"));

        llStudentList.add(new Student("Mahendra", "Kadapa,RayalaSeema"));

        llStudentList.add(new Student("Kishore", "Rajampeta,RayalaSeema"));

        llStudentList.add(new Student("Rakesh", "Nandyala,RayalaSeema"));

        llStudentList.add(new Student("Suresh", "Kurnool,RayalaSeema"));

        llStudentList.add(new Student("Sudhakar", "Ananthapur,RayalaSeema"));

        llStudentList.add(new Student("Prasad", "Ananthapur,RayalaSeema"));

        return llStudentList;

    }

}

Student.Java

------------------

package com.anilsoft.anil.model;

/**

 * Created by Anil on 8/14/2017.

 */

public class Student {

    String name;

    String location;

    public Student(String name, String location) {

        this.name = name;

        this.location = location;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getLocation() {

        return location;

    }

    public void setLocation(String location) {

        this.location = location;

    }

}

StudentAdapter.Java

------------------------

package com.anilsoft.anil.adapter;

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.RadioButton;

import android.widget.TextView;

import android.widget.Toast;

import com.anilsoft.anil.R;

import com.anilsoft.anil.model.Student;

import java.util.List;

import butterknife.BindView;

import butterknife.ButterKnife;

/**

 * Created by Anil on 8/14/2017.

 */

public class StudentAdapter extends RecyclerView.Adapter<StudentAdapter.StudentVH> {

    Context context;

    List<Student> list;

    public int mSelectedItem = -1;

    public StudentAdapter(Context context, List<Student> list) {

        this.context = context;

        this.list = list;

    }

    @Override

    public StudentVH onCreateViewHolder(ViewGroup parent, int viewType) {

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

        return new StudentVH(view);

    }

    @Override

    public void onBindViewHolder(StudentVH holder, int position) {

        holder.rviewRadiobutton.setChecked(position == mSelectedItem);

        holder.loadData(position);

    }

    @Override

    public int getItemCount() {

        return list.size();

    }

    public class StudentVH extends RecyclerView.ViewHolder {

        @BindView(R.id.textView_rvname)

        TextView textViewRvname;

        @BindView(R.id.textView_rvloc)

        TextView textViewRvloc;

        @BindView(R.id.rview_radiobutton)

        RadioButton rviewRadiobutton;

        public StudentVH(View itemView) {

            super(itemView);

            ButterKnife.bind(this, itemView);

        }

        void loadData(final int position) {

            textViewRvname.setText(list.get(position).getName());

            textViewRvloc.setText(list.get(position).getLocation());

            View.OnClickListener listener = new View.OnClickListener() {

                @Override

                public void onClick(View v) {

                    mSelectedItem = getAdapterPosition();

                    notifyDataSetChanged();

                    Toast.makeText(context, "" + list.get(position).getName() + "\n" + list.get(position).getLocation(), Toast.LENGTH_SHORT).show();

                }

            };

            rviewRadiobutton.setOnClickListener(listener);

            itemView.setOnClickListener(listener);

        }

    }

}

MainActivity.Java

---------------------------

package com.anilsoft.anil;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.LinearLayoutManager;

import android.support.v7.widget.RecyclerView;

import com.anilsoft.anil.adapter.StudentAdapter;

import com.anilsoft.anil.utils.Utils;

import butterknife.BindView;

import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.recyclerview_demo)

    RecyclerView recyclerviewDemo;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ButterKnife.bind(this);

        loadStudentInformation();

    }

    private void loadStudentInformation() {

        StudentAdapter studentAdapter = new StudentAdapter(MainActivity.this, Utils.loadStudentData());

        recyclerviewDemo.setLayoutManager(new LinearLayoutManager(this));

        recyclerviewDemo.setAdapter(studentAdapter);

    }

}