Android ListView with own layout

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="iterator.ir.a013.MainActivity">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:id="@+id/listViewCountries" />
</RelativeLayout>

listview_custom_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">


    <TextView
        android:text="TextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/textViewListItem"
        android:gravity="center"
        android:textSize="18dp"
        android:textColor="@color/w3_highway_blue"
        android:paddingBottom="5dp"/>
</LinearLayout>

res/values/strings.xml

<resources>
    <string name="app_name">013</string>

    <string-array name="countries">
        <item>Iran</item>
        <item>Iraq</item>
        <item>India</item>
        <item>Italy</item>
        <item>Brazil</item>
        <item>France</item>
        <item>United Kingdom</item>
        <item>Pakistan</item>
        <item>Oman</item>
    </string-array>
</resources>

MainActivity.java

ListView listViewCountries;
    ArrayAdapter<String> arrayAdapter;
    String[] countries;

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


        countries=getResources().getStringArray(R.array.countries);

        listViewCountries= (ListView) findViewById(R.id.listViewCountries);

        arrayAdapter=new ArrayAdapter<String>(this, R.layout.listview_custom_layout, R.id.textViewListItem,countries);
        listViewCountries.setAdapter(arrayAdapter);

        listViewCountries.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast toast=Toast.makeText(getBaseContext(),parent.getItemAtPosition(position).toString(),Toast.LENGTH_LONG);
                toast.show();
            }
        });
    }

References
https://github.com/mhdr/AndroidSamples/tree/master/013