Setting LayoutParams but its not working android

Trying to create a linear layout programmatically and setting its width and height by layout params. But it seems layout params isn't working.

this is the code:

 // CREATING A NEW LINEAR LAYOUT PROGRAMMATICALLY
    LinearLayout linearLayout = new LinearLayout(getActivity());
    ViewGroup.LayoutParams layoutParams = new 
 ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 
 ViewGroup.LayoutParams.WRAP_CONTENT);
    linearLayout.setLayoutParams(layoutParams);
    linearLayout.setOrientation(LinearLayout.HORIZONTAL);

    // CREATING CHILDDRENS (TEXT VIEWS)
    TextView name = new TextView(getContext(), null, 0, R.style.item_layout_style);
    name.setText("Pine");
    TextView qty = new TextView(getContext(), null, 0, R.style.item_layout_style);
    qty.setText("10");
    TextView cost = new TextView(getContext(), null, 0, R.style.item_layout_style);
    cost.setText("785");
    TextView tCost = new TextView(getContext(), null, 0, R.style.item_layout_style);
    tCost.setText("1000");



    // SET TEXT VIEW TO LINEAR LAYOUT
    linearLayout.addView(name);
    linearLayout.addView(qty);
    linearLayout.addView(cost);
    linearLayout.addView(tCost);

    // SET LINEAR LAYOUT TO PINE LAYOUT
    LinearLayout daddy= (LinearLayout) view.findViewById(R.id.layout);
    daddy.addView(linearLayout, 2);

    // Return the view
    return view;

I have root layout (daddy) which has many linear layouts (vertically oriented), but I need to create a linear layout programmatically and add that to "daddy". But the text views are sticked together, they aren't getting the entire space horizontally.

Do help me!

Everything is fine with the code. It is the style that I tried to give to text views, they weren't getting layout weight, width and height. How did I find this out? Well I set the linear layout's background-color to black to see if it's really not getting width and height set by LayoutParams. And I wasn't wrong! Width was set to match parent. So what I did was create a new layout param for text views and set it to them.