ListView 根据item手动设置高度和自适应宽度

有效的解决ListView宽度设置为wrap_content还是占满整行的问题，解决listview外设置了ScrollView无滚动效果而ListView的Item被隐藏的问题，代码如下

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