Android Lab: List View with ContextMenu

gistfile1.java

package com.example.androidlab;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
 
public class MainActivity extends ListActivity {
	String item;
	
	static final String[] arrOS = new String[] { "Android", "iPhone",
			"WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows7",
			"Max OS X", "Linux", "OS/2", "Ubuntu", "Windows7", "Max OS X",
			"Linux", "OS/2", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2",
			"Android", "iPhone", "WindowsMobile" };
 
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, R.id.textView, arrOS));
		ListView listView = getListView();
		listView.setTextFilterEnabled(true);
		registerForContextMenu(listView);
		listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
			@Override
			public boolean onItemLongClick(AdapterView<?> arg0, View view,
					int arg2, long arg3) {
				// TODO Auto-generated method stub
				TextView txtId = (TextView) view.findViewById(R.id.textView);
				item = txtId.getText().toString();
				return false;
		}});
	}
 
	@Override
	public void onCreateContextMenu(ContextMenu menu, View v,
			ContextMenuInfo menuInfo) {
		// TODO Auto-generated method stub
		super.onCreateContextMenu(menu, v, menuInfo);
		MenuInflater inflater = getMenuInflater();
	    inflater.inflate(R.menu.context_menu, menu);
	}
 
	@Override
	public boolean onContextItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
		super.onContextItemSelected(item);
	    switch (item.getItemId()) {
	        case R.id.mnu_del:
	        	Toast.makeText(this, "This is delete: " + item, Toast.LENGTH_LONG).show();
	            return true;
	        default:
	            return super.onContextItemSelected(item);
	    }
	}
}