listveiw如何根据item数目变换高度

//此方法在setAdapter之后调用（只针对item高度相同的listview,不同的暂未解决，欢迎分享，共同进步）

public static void setListViewHeightBasedOnChildren(ListView listView) {
    ListAdapter listAdapter = listView.getAdapter();
    if (listAdapter == null) {
     return;
    }
    int totalHeight = 0;
    for (int i = 0; i < listAdapter.getCount(); i++) {
     View listItem = listAdapter.getView(i, null, listView);
     listItem.measure(0, 0);
     totalHeight += listItem.getMeasuredHeight();
    }
   
    ViewGroup.LayoutParams params = listView.getLayoutParams();
    
    params.height = totalHeight
      + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
    listView.setLayoutParams(params);
 }

文章转载出处：http://my.oschina.net/u/560884/blog/215882