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Android ListView

ListView:

ListView is a view group which display list of items to scroll horizontally also.

It is a UI control that is used to display the collection of the views arranged vertically and where each view corresponds to the list item.

The items in the list are usually loaded on the fly, often from an adapter which has the responsibility of populating the data to the list item view and it also handles the view reusing.

Example:

                                    
<?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="match_parent"
        tools:context=".ListViewExample"
        android:orientation="vertical">
    
        <ListView
           android:id="@+id/listview"
           android:layout_width="match_parent"
           android:layout_height="match_parent"/>
   
</LinearLayout>

                                    
package com.example.widgets;
    
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
   
import java.util.ArrayList;
   
public class ListViewExample extends AppCompatActivity {
   
    ListView listView;
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_view_example);
        listView=(ListView)findViewById(R.id.listview);
   
        final ArrayList<String> arrayList=new ArrayList<>();
   
           arrayList.add("India");
           arrayList.add("America");
           arrayList.add("China");
           arrayList.add("Japan");
           arrayList.add("Nepal");
           arrayList.add("Pakistan");
           arrayList.add("Russia");
           arrayList.add("Australia");
           arrayList.add("Dubai");
           arrayList.add("Saudi Arabia");
           arrayList.add("Qatar");
           arrayList.add("Afghanistan");
           arrayList.add("Bangladesh");
           arrayList.add("Srilanka");
           arrayList.add("Africa");
           arrayList.add("Germany");
           arrayList.add("NewZealand");
           arrayList.add("Portugle");
           arrayList.add("Bahrain");
           arrayList.add("Belgium");
           arrayList.add("Bhutan");
           arrayList.add("Brazil");
           arrayList.add("Colombia");
           arrayList.add("Cyprus");
           arrayList.add("Egypt");
           arrayList.add("Tanzania");
   
        ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(getApplicationContext(),
                R.layout.support_simple_spinner_dropdown_item,arrayList);
        listView.setAdapter(arrayAdapter);
   
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView parent, View view, int position, long id) {
                Toast.makeText(getApplicationContext(),"country: "+arrayList.get(position),Toast.LENGTH_SHORT).show();
            }
        });
   
   
    }
}

                                    
                                        package com.example.widgets

import android.os.Bundle
import android.view.View
import android.widget.AdapterView
import android.widget.ArrayAdapter
import android.widget.ListView
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity

class ListViewExample : AppCompatActivity() {

    private lateinit var listView: ListView

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_list_view_example)

        listView = findViewById(R.id.listview)

        val arrayList = arrayListOf(
            "India", "America", "China", "Japan", "Nepal", "Pakistan", "Russia", "Australia",
            "Dubai", "Saudi Arabia", "Qatar", "Afghanistan", "Bangladesh", "Srilanka", "Africa",
            "Germany", "NewZealand", "Portugle", "Bahrain", "Belgium", "Bhutan", "Brazil",
            "Colombia", "Cyprus", "Egypt", "Tanzania"
        )

        val arrayAdapter = ArrayAdapter(
            applicationContext,
            R.layout.support_simple_spinner_dropdown_item,
            arrayList
        )
        listView.adapter = arrayAdapter

        listView.setOnItemClickListener { parent: AdapterView<*>, view: View, position: Int, id: Long ->
            Toast.makeText(
                applicationContext,
                "Country: ${arrayList[position]}",
                Toast.LENGTH_SHORT
            ).show()
        }
    }
}

Output