Android อยากทราบวิธีการอ่าน onItemClick จากคลาสที่ไม่ได้ extends Activity ครับ

public class RssReaderActivity extends Activity implements AsyncTaskCompletionListener{
	private ListView listview;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.rss_reader);
		listview=(ListView)findViewById(R.id.rssfeed_listview);
		if(Utility.determineConnectivity(this)){
		 new RssFeedAsyncTask(this).execute(Utility.url);

		 //  *** เพิ่มส่วนนี้เข้าไป ***
		 String url = "http://www.example.com";
		 Intent i = new Intent(Intent.ACTION_VIEW);
		 i.setData(Uri.parse(url));
		 startActivity(i);

		}
		else{
			Toast.makeText(this, "No Internet Connection", Toast.LENGTH_SHORT).show(); 
		}
		
}

public class RssReaderListAdapter extends ArrayAdapter<RssFeedStructure> {
	List<RssFeedStructure> imageAndTexts1 = null;

	public RssReaderListAdapter(Activity activity,
			List<RssFeedStructure> imageAndTexts) {
		super(activity, 0, imageAndTexts);
		imageAndTexts1 = imageAndTexts;
		
		// Permission StrictMode
		if (android.os.Build.VERSION.SDK_INT > 9) {
		    StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
		    StrictMode.setThreadPolicy(policy);
		}
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {

		Activity activity = (Activity) getContext();
		LayoutInflater inflater = activity.getLayoutInflater();

		View rowView = inflater.inflate(R.layout.rssfeedadapter_layout, null);
		TextView textView = (TextView) rowView.findViewById(R.id.feed_text);
		TextView timeFeedText = (TextView) rowView
				.findViewById(R.id.feed_updatetime);
		ImageView imageView = (ImageView) rowView.findViewById(R.id.feed_image);
		try {

			Log.d("rssfeed", "imageAndTexts1.get(position).getImgLink() :: "
					+ imageAndTexts1.get(position).getImgLink() + " :: "
					+ imageAndTexts1.get(position).getTitle()+ " :: "
					+ imageAndTexts1.get(position).getUrl());
			textView.setText(imageAndTexts1.get(position).getTitle());
			SpannableString content = new SpannableString(imageAndTexts1.get(
					position).getPubDate());
			content.setSpan(new UnderlineSpan(), 0, 13, 0);

			timeFeedText.setText(content);
			
			 // โค้ดที่เพิ่มเข้าไป  OnClick Item
			imageAndTexts1.setOnItemClickListener(new OnItemClickListener() {
			      public void onItemClick(AdapterView<?> myAdapter, View myView, int position, long mylng) {
			   
			    	  Toast.makeText(getApplicationContext(), imageAndTexts1.get(position).getUrl(), Toast.LENGTH_SHORT).show();
			    	  
			      }     
	        });
			
			if (imageAndTexts1.get(position).getImgLink() != null) {

				URL feedImage = new URL(imageAndTexts1.get(position)
						.getImgLink().toString());
				if (!feedImage.toString().equalsIgnoreCase("null")) {
					HttpURLConnection conn = (HttpURLConnection) feedImage
							.openConnection();
					InputStream is = conn.getInputStream();
					
					imageView.setLayoutParams(new LinearLayout.LayoutParams(200, 200)); 
					Bitmap img = BitmapFactory.decodeStream(is);
		
					imageView.setImageBitmap(img);
				} else {
					
					imageView.setBackgroundResource(R.drawable.im);
				}
			}

		} catch (MalformedURLException e) {

		} catch (IOException e) {

		}

		return rowView;

	}