set margin dynamically

TextView interestName = (TextView) first_item
.findViewById(R.id.interestName);

interestName.setText(checkedInterest.get(i));
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
lp.setMargins(0, 0, 10, 0);
container.addView(first_item, lp);