@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    ImageView acceptImageView= (ImageView) view.findViewById(R.id.iAccept);
    if (acceptImageView.getVisibility()==ImageView.INVISIBLE) {
        acceptImageView.setVisibility(ImageView.VISIBLE);
    } else {
        acceptImageView.setVisibility(ImageView.INVISIBLE);
    }
}