Ejemplo RecyclerView de Personas

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: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"
    tools:context="tech.alvarez.listapersonas.activities.MainActivity">

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

build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 24
    buildToolsVersion "24.0.2"
    defaultConfig {
        applicationId "tech.alvarez.listapersonas"
        minSdkVersion 15
        targetSdkVersion 24
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'

    compile 'com.android.support:recyclerview-v7:24.2.1'
    compile 'com.android.support:cardview-v7:24.2.1'
}

item_persona.xml

<?xml version="1.0" encoding="utf-8"?>
<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:layout_margin="8dp"
    card_view:cardCornerRadius="4dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:padding="8dp">

        <TextView
            android:id="@+id/nombresTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Maria Perez"
            android:textSize="20sp" />


        <TextView
            android:id="@+id/ciTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="6120073"
            android:textSize="16sp" />

        <TextView
            android:id="@+id/sexoTextView"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Femenino"
            android:textColor="@color/colorAccent"
            android:textSize="12sp" />


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

MainActivity.java

package tech.alvarez.listapersonas.activities;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

import tech.alvarez.listapersonas.R;
import tech.alvarez.listapersonas.adapters.OnItemClickListener;
import tech.alvarez.listapersonas.adapters.PersonasAdapter;
import tech.alvarez.listapersonas.models.Persona;

public class MainActivity extends AppCompatActivity implements OnItemClickListener{

    private RecyclerView personasRecyclerView;
    private PersonasAdapter personasAdapter;

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

        personasRecyclerView = (RecyclerView) findViewById(R.id.personasRecyclerView);
        personasRecyclerView.setHasFixedSize(true);
        personasRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        personasAdapter = new PersonasAdapter(this);
        personasRecyclerView.setAdapter(personasAdapter);

        // adicionar datos
        personasAdapter.add(new Persona("Maria", "Perez", 1762354, "F"));
        personasAdapter.add(new Persona("Juan", "Rivera", 542345, "M"));
        personasAdapter.add(new Persona("Ricardo", "Gutierrez", 1937491, "M"));

    

    }

    @Override
    public void onItemClick(Persona p) {
        Toast.makeText(this, p.getNombres() + " " + p.getCi(), Toast.LENGTH_LONG).show();
    }
}

OnItemClickListener.java

package tech.alvarez.listapersonas.adapters;


import tech.alvarez.listapersonas.models.Persona;

public interface OnItemClickListener {

    void onItemClick(Persona p);
    
}

Persona.java

package tech.alvarez.listapersonas.models;

public class Persona {

    private String nombres;
    private String apellidos;
    private int ci;
    private String sexo;

    public Persona(String nombres, String apellidos, int ci, String sexo) {
        this.nombres = nombres;
        this.apellidos = apellidos;
        this.ci = ci;
        this.sexo = sexo;
    }

    public String getNombres() {
        return nombres;
    }

    public void setNombres(String nombres) {
        this.nombres = nombres;
    }

    public String getApellidos() {
        return apellidos;
    }

    public void setApellidos(String apellidos) {
        this.apellidos = apellidos;
    }

    public int getCi() {
        return ci;
    }

    public void setCi(int ci) {
        this.ci = ci;
    }

    public String getSexo() {
        return sexo;
    }

    public void setSexo(String sexo) {
        this.sexo = sexo;
    }
}

PersonasAdapter.java

package tech.alvarez.listapersonas.adapters;


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

import java.util.ArrayList;

import tech.alvarez.listapersonas.R;
import tech.alvarez.listapersonas.models.Persona;

public class PersonasAdapter extends RecyclerView.Adapter<PersonasAdapter.ViewHolder> {

    private ArrayList<Persona> dataset;
    private OnItemClickListener onItemClickListener;

    public PersonasAdapter(OnItemClickListener onItemClickListener) {
        this.dataset = new ArrayList<Persona>();
        this.onItemClickListener = onItemClickListener;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_persona, parent, false);
        return new ViewHolder(view);
    }

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

        Persona p = dataset.get(position);

        holder.nombresTextView.setText(p.getNombres() + " " + p.getApellidos());
        holder.ciTextView.setText(p.getCi() + "");

        if (p.getSexo().equals("M")) {
            holder.sexoTextView.setText("Masculino");
        } else {
            holder.sexoTextView.setText("Femenino");
        }

        holder.setOnItemClickListener(p, onItemClickListener);

    }

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


    public static class ViewHolder extends RecyclerView.ViewHolder {

        TextView nombresTextView;
        TextView ciTextView;
        TextView sexoTextView;

        public ViewHolder(View itemView) {
            super(itemView);

            nombresTextView = (TextView) itemView.findViewById(R.id.nombresTextView);
            ciTextView = (TextView) itemView.findViewById(R.id.ciTextView);
            sexoTextView = (TextView) itemView.findViewById(R.id.sexoTextView);

        }

        public void setOnItemClickListener(final Persona p, final OnItemClickListener onItemClickListener) {
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    onItemClickListener.onItemClick(p);
                }
            });
        }
    }


    public void add(Persona p) {
        dataset.add(p);
        notifyDataSetChanged();
    }

    public void clear() {
        dataset.clear();
        notifyDataSetChanged();
    }
}