@Override
	public void onBackPressed() {

		new AlertDialog.Builder(this)
        	.setIcon(android.R.drawable.ic_dialog_alert)
        	.setTitle("Exit App")
        	.setMessage("Are you sure you want to exit?")
        	.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        		public void onClick(DialogInterface dialog, int which) {
        			finish();
        		}

        	})
        	.setNegativeButton("No", null)
        	.show();
	}