动态设置listView的高度

/*** 
     * 动态设置listview的高度 
     *  item 总布局必须是linearLayout
     * @param listView 
     */  
    public 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))  
                +15;  
        listView.setLayoutParams(params);  
    }