LinearLayout和其他元素怎么通过Java插入

LinearLayout和其他元素如何通过Java插入
请看例子:

LinearLayout temp = new LinearLayout(IndexActivity.this);LinearLayout.LayoutParams temp11 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 100,1);temp11.setMargins(5, 5, 5, 5);temp.setLayoutParams(temp11);temp.setOrientation(LinearLayout.VERTICAL);temp.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL);((LinearLayout)findViewById(R.id.indexBody)).addView(temp);