getView() is called trice when I only inserted 1 item

Question

This is my code:

path = new ArrayList<String>();
adapter = new PathAdapter(this, path);
path_list.setAdapter(adapter);

And then, in a press of a button i inserted another string:

this is to add and update the list

path.add("new string");
adapter.notifyDataSetChanged();

and in my adapter:

if(view == null){
    view = inflater.inflate(R.layout.pics_row, parent, false);
    holder = new ViewHolder();

    holder.ivPath = (TextView) view.findViewById(R.id.path);

    view.setTag(holder);
    Log.e("view", "null");
}else{
    holder = (ViewHolder) view.getTag();
    Log.e("view" , "not null");
}

The logs is for me to know which condition it went. The problem is that, it called the getView() trice. Why? I only inserted 1 item.

logcat:

10-02 18:37:56.332  22783-22783/smartminds.com.ci E/view﹕ null
10-02 18:37:56.335  22783-22783/smartminds.com.ci E/view﹕ not null
10-02 18:37:56.407  22783-22783/smartminds.com.ci E/view﹕ not null