Android : Add child(LinearLayout) views to LinearLayout in android in a paritcular order

I am new to android development and I want to programatically add LinearLayout views to the parent LinearLayout. And while doing so , I want to see them sequentially. That is the view that gets added first should be first , the view that is added second should be second and so on. I tried doing it with

   HolderLayout.addView(view, index) 

where index goes on incrementing, but it is not working for me. The view that i add first is shown second in the list. What should I do? Outline of my code is :

    int index = 0;
    View Row1 = View.inflate(this, R.layout.childView, null);

    //populate the appropriate data on the child Row and add it to the holder layout.

    holder_layout.addView(Row1 , index);
    index++;
    Set<Integer>keys = MyMap.keySet();

    for(int i : keys){


          View row = View.inflate(this,  
                                   R.layout.childView, null);

          holder_layout.addView(row , index);
          index++;

   }

where am I going wrong.