Android Highlight selected item in a ListView

res/values/strings.xml

<resources>
    <string name="app_name">014</string>

    <string-array name="countries">
        <item>Iran</item>
        <item>Iraq</item>
        <item>India</item>
        <item>Italy</item>
        <item>United Kingdom</item>
        <item>United States</item>
        <item>Israel</item>
        <item>Kuwait</item>
    </string-array>
</resources>

res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
    
    <color name="w3_camo_gray">#9495a5</color>
    <color name="Lemon_Yellow">#ffbb00</color>
</resources>

res/layout/listview_countries_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/textViewListViewCountriesItem"
        android:gravity="center"
        android:paddingBottom="15px"
        android:textStyle="bold"
        android:textSize="18dp"
        android:background="@drawable/listview_countries_selector"/>
</LinearLayout>

res/drawable/listview_countries_selector.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item
        android:state_pressed="true"
        android:drawable="@color/w3_camo_gray"
        ></item>

    <item
        android:state_selected="true"
        android:drawable="@color/Lemon_Yellow"
        ></item>
</selector>

res/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.a014.MainActivity">

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

MainActivity.java

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

   @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);

       listViewArrayAdapter=new ArrayAdapter<String>(getBaseContext(), R.layout.listview_countries_custom_layout, R.id.textViewListViewCountriesItem,countries);

       listViewCountries.setAdapter(listViewArrayAdapter);


       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_SHORT);
               toast.show();

               view.setSelected(true);
           }
       });
   }

References
https://github.com/mhdr/AndroidSamples/tree/master/014