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Listview Example

ListView is a view group that displays a list of scrollable items. The list items are automatically inserted to the list using an Adapter that pulls content from a source such as an array or database query and converts each item result into a view that's placed into the list.
For an introduction to how you can dynamically insert views using an adapter, read Building Layouts with an Adapter.

list.xml

<RelativeLayout 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" 
    android:paddingLeft="@dimen/activity_horizontal_margin"    
    android:paddingRight="@dimen/activity_horizontal_margin"    
    android:paddingTop="@dimen/activity_vertical_margin"    
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.blogspot.help2computer.test.List">

    <ListView       
      android:layout_width="wrap_content"        
      android:layout_height="wrap_content"        
      android:id="@+id/listView"        
      android:layout_alignParentTop="true"        
      android:layout_alignParentLeft="true"        
      android:layout_alignParentStart="true"        
      android:layout_marginTop="68dp" />
</RelativeLayout>

List.java

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class List extends AppCompatActivity {

    ListView listView;

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

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

        // Defined Array values to show in ListView  

        String[] values = new String[]{"Android List View",
                "Adapter implementation",
                "Simple List View In Android",
                "Create List View Android",
                "Android Example",
                "List View Source Code",
                "List View Array Adapter",
                "Android Example List View"        };

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, values);

        listView.setAdapter(adapter) ;
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                // ListView Clicked item index                
              int itemPosition     = position;
                   // ListView Clicked item value      
             String  itemValue    = (String) listView.getItemAtPosition(position);
                // Show Alert    
           Toast.makeText(getApplicationContext(),itemValue , Toast.LENGTH_LONG)
                        .show();
            }
        });


    }
}

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