Android Custom List View with Custom Adapter

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="com.example.menuka.adaptertest.MainActivity">

    <ListView
        android:id="@+id/names_list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

MainActivity.java

package com.example.menuka.adaptertest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ListView;

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

public class MainActivity extends AppCompatActivity {
    private List<Person> personList;
    private PersonAdapter personAdapter;

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

        personList = new ArrayList<>();
        personList.add(new Person("Mark", "21"));
        personList.add(new Person("John", "22"));
        personList.add(new Person("Oliver", "28"));
        personList.add(new Person("Tom", "27"));
        personList.add(new Person("Francis", "30"));

        personAdapter = new PersonAdapter(this, 0, personList);

        ListView listView = (ListView) findViewById(R.id.names_list_view);
        listView.setAdapter(personAdapter);
    }
}

Person.java

package com.example.menuka.adaptertest;

public class Person {
    private String name;
    private String age;

    public Person(String name, String age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public String getAge() {
        return age;
    }
}

person_list_item.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="60dp"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:id="@+id/text_container">



   <TextView
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="1"
       android:id="@+id/name_text_view"
       android:gravity="bottom"
       android:textSize="18sp"
       android:textStyle="normal|bold"
       android:paddingLeft="10dp"
       android:paddingRight="10dp"
       android:paddingStart="10dp"
       android:paddingEnd="10dp"
       tools:text="Placeholder Name"
       />

   <TextView
       android:layout_width="match_parent"
       android:layout_height="0dp"
       android:layout_weight="1"
       android:id="@+id/age_text_view"
       android:gravity="top"
       android:textSize="18sp"
       android:paddingLeft="10dp"
       android:paddingRight="10dp"
       android:paddingStart="10dp"
       android:paddingEnd="10dp"
       tools:text="Placeholder Age"
       />


</LinearLayout>

PersonAdapter.java

package com.example.menuka.adaptertest;

import android.content.Context;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.List;

public class PersonAdapter extends ArrayAdapter<Person>{
    private static final String TAG = PersonAdapter.class.getSimpleName();

    List<Person> personList;

    public PersonAdapter(Context context, int resource, List<Person> objects) {
        super(context, resource, objects);

        personList = objects;
    }

    @NonNull
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View listItemView = convertView;
        Person currentPerson = personList.get(position);

        if(listItemView == null){
            listItemView = LayoutInflater.from(getContext()).inflate(R.layout.person_list_item, parent, false);
        }

        TextView nameTextView = (TextView) listItemView.findViewById(R.id.name_text_view);
        nameTextView.setText(currentPerson.getName());

        TextView ageTextView = (TextView) listItemView.findViewById(R.id.age_text_view);
        ageTextView.setText(currentPerson.getAge());


        return listItemView;
    }
}

Aye Man thanks for this