Android Gesture on ListView Detecting Sliding Items (Flip and Swipe)

package com.myapp;

import java.util.ArrayList;
import java.util.HashMap;

import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.app.Activity;
import android.content.Context;

public class MainActivity extends Activity {
	
	ListView lstView1;
	ArrayList<HashMap<String, String>> MyArrList;
	GestureDetector gestureDetector;
	View.OnTouchListener gestureListener;
	
	private static final int SWIPE_MIN_DISTANCE = 120;
	private static final int SWIPE_MAX_OFF_PATH = 250;
	private static final int SWIPE_THRESHOLD_VELOCITY = 100;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
    	MyArrList = new ArrayList<HashMap<String, String>>();
		HashMap<String, String> map;
		
		/*** Rows 1 ***/
		map = new HashMap<String, String>();
		map.put("ImageID", "1");
		map.put("ImageDesc", "Sea View1");
		map.put("ImagePath", "pic_a");
		MyArrList.add(map);
		
		/*** Rows 2 ***/
		map = new HashMap<String, String>();
		map.put("ImageID", "2");
		map.put("ImageDesc", "Sea View2");
		map.put("ImagePath", "pic_b");
		MyArrList.add(map);	
		
		/*** Rows 3 ***/
		map = new HashMap<String, String>();
		map.put("ImageID", "3");
		map.put("ImageDesc", "Sea View 3");
		map.put("ImagePath", "pic_c");
		MyArrList.add(map);
		
		/*** Rows 4 ***/
		map = new HashMap<String, String>();
		map.put("ImageID", "4");
		map.put("ImageDesc", "Sea View 4");
		map.put("ImagePath", "pic_d");
		MyArrList.add(map);			
		
		
        // listView1
        lstView1 = (ListView)findViewById(R.id.listView1); 
        	
        lstView1.setAdapter(new ImageAdapter(this));
        //lstView1.setEnabled(false);
        
        gestureDetector = new GestureDetector(new MyGestureDetector());
        gestureListener = new View.OnTouchListener() {
            public boolean onTouch(View v, MotionEvent event) {
                if (gestureDetector.onTouchEvent(event)) {
                    return true;
                }
                return false;
            }
        };
        lstView1.setOnTouchListener(gestureListener);
    }
       
    class MyGestureDetector extends SimpleOnGestureListener {
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
                float velocityY) {
            try {
	            if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)
	                return false;
	            // right to left swipe
	            if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE
	                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
	            		YourSlideRightToLeft(lstView1.pointToPosition((int)e1.getX(),(int)e1.getY()));

	            } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE
	                    && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
	                //left to right swipe
	            	YourSlideLeftToRight(lstView1.pointToPosition((int)e1.getX(),(int)e1.getY()));
	           }
	        } catch (Exception e) {
	            // nothing
	        	return true;
	        }
	        
		return true;
		
        }
    }
    
    // Command for Slide Right to Left (<-----)
    public void YourSlideRightToLeft(int position)
    {
		   Toast.makeText(MainActivity.this, "<-- Your Slide Right to Left ImgID = " + MyArrList.get(position).get("ImageID") , Toast.LENGTH_SHORT).show();
    }
    
    // Command for Slide Left to Right (<-----)
    public void YourSlideLeftToRight(int position)
    {
    		Toast.makeText(MainActivity.this, "---> Your Slide Left to Right ImgID = " + MyArrList.get(position).get("ImageID") , Toast.LENGTH_SHORT).show();
    }
    
    public class ImageAdapter extends BaseAdapter 
    {
        private Context context;

        public ImageAdapter(Context c) 
        {
        	// TODO Auto-generated method stub
            context = c;
        }
 
        public int getCount() {
        	// TODO Auto-generated method stub
            return MyArrList.size();
        }
 
        public Object getItem(int position) {
        	// TODO Auto-generated method stub
            return position;
        }
 
        public long getItemId(int position) {
        	// TODO Auto-generated method stub
            return position;
        }
		public View getView(final int position, View convertView, ViewGroup parent) {
			// TODO Auto-generated method stub
			
			LayoutInflater inflater = (LayoutInflater) context
					.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		 
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.activity_column, null); 
			}
 
			// ColImage
			ImageView imageView = (ImageView) convertView.findViewById(R.id.ColImgPath);
			imageView.getLayoutParams().height = 80;
			imageView.getLayoutParams().width = 80;
			imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
			imageView.setPadding(5, 5, 5, 5);
			int ResID = context.getResources().getIdentifier(MyArrList.get(position).get("ImagePath"), "drawable", context.getPackageName());
			imageView.setImageResource(ResID);
				
			// ColImgID
			TextView txtPosition = (TextView) convertView.findViewById(R.id.ColImgID);
			txtPosition.setPadding(10, 0, 0, 0);
			txtPosition.setText(MyArrList.get(position).get("ImageID") +".");
			
			// ColPicname
			TextView txtPicName = (TextView) convertView.findViewById(R.id.ColImgDesc);
			txtPicName.setPadding(5, 0, 0, 0);
			txtPicName.setText(MyArrList.get(position).get("ImageDesc"));

			return convertView;
				
		}

    } 
    
    
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}