ScrollView中嵌套ListView或ExpandableListView时显示不全的问题

在一个layout文件中出现ListView或ExpandableListView显示不全是因为其他控件的缘故导致不能系统不能正确计算ListView或ExpandableListView不能正确设置其高度，这个时候需要我们根据适配器中数据的大小自定义其高度。具体设置方法如下：

public static void setListViewHeightBasedOnChildren(ListView listView) {
// 获取ListView对应的Adapter
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}

int totalHeight = 0;
for (int i = 0, len = listAdapter.getCount(); i < len; i++) { // listAdapter.getCount()返回数据项的数目
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0); // 计算子项View 的宽高
totalHeight += listItem.getMeasuredHeight(); // 统计所有子项的总高度
}

ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight
+ (listView.getDividerHeight() * (listAdapter.getCount() - 1));
// listView.getDividerHeight()获取子项间分隔符占用的高度
// params.height最后得到整个ListView完整显示需要的高度
listView.setLayoutParams(params);
}

public static void setExpandableListViewHeightBasedOnChildren(ExpandableListView expandableListView) {
// 获取ListView对应的Adapter
SimpleExpandableListAdapter expandableListAdapter = (SimpleExpandableListAdapter) expandableListView.getExpandableListAdapter();
if (expandableListAdapter == null) {
// pre-condition
return;
}

int totalHeight = 0;
int num=0;
int groupCount=expandableListAdapter.getGroupCount(),count;
num=groupCount;
for(int i=0;i<groupCount;i++)
{
count=expandableListAdapter.getChildrenCount(i);
View groupListItem=expandableListAdapter.getGroupView(i, false, null, expandableListView);
groupListItem.measure(0, 0); // 计算子项View 的宽高
totalHeight += groupListItem.getMeasuredHeight(); // 统计所有子项的总高度
num=num+count;
for (int j = 0; j<count; j++) { // listAdapter.getCount()返回数据项的数目

View listItem = expandableListAdapter.getChildView(i, j, false, null, expandableListView);

listItem.measure(0, 0); // 计算子项View 的宽高
totalHeight += listItem.getMeasuredHeight(); // 统计所有子项的总高度
// Log.i("test", ""+totalHeight);
}
}
// Log.i("test", "num:"+num);
ViewGroup.LayoutParams params = expandableListView.getLayoutParams();
params.height = totalHeight
+ (expandableListView.getDividerHeight() * (num - 1));
// Log.i("test", "height:"+params.height);
// listView.getDividerHeight()获取子项间分隔符占用的高度
// params.height最后得到整个ListView完整显示需要的高度
expandableListView.setLayoutParams(params);
}