ScrollView中嵌入ListView只显示一条的解决办法

lv = (ListView) findViewById(R.id.lv); 
adapter = new MyAdapter(); 
lv.setAdapter(adapter); setListViewHeightBasedOnChildren(lv); 
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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)); 
params.height += 5; 
listView.setLayoutParams(params); }

import android.widget.ListView; 
/** * * @Description: scrollview 中内嵌 listview 的简单实现 
* * @File: ScrollViewWithListView.java 
* * * @Version */ 
public class ScrollViewWithListView extends ListView { 
public ScrollViewWithListView(android.content.Context context, android.util.AttributeSet attrs) { super(context, attrs); } 
/** 
* Integer.MAX_VALUE >> 2,如果不设置，系统默认设置是显示两条 */ 
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); 
} 
}