范例：
1.MainActivity代码：
public class MainActivity extends Activity{// 只要在设置ListView的Adapter后调用此静态方法Utility.setListViewHeightBasedOnChildren(listview);// 即可让ListView正确的显示在其父ListView的ListItem中。// 但是要注意的是，子ListView的每个Item必须是LinearLayout，不能是其他的，因为其他的Layout(如RelativeLayout)// 没有重写onMeasure()，所以会在onMeasure()时抛出异常。private ArrayList<String> dataList;private ListView listview;private ImageView img;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);dataList = new ArrayList<String>();for (int i = 0; i < 5; i++){String str = "第" + i + "行";dataList.add(str);}img = (ImageView) findViewById(R.id.p_w_picpathView1);listview = (ListView) findViewById(R.id.listView1);listview.setAdapter(new BaseAdapter(){@Overridepublic View getView(int position, View convertView, ViewGroup parent){LayoutInflater inflater = getLayoutInflater();View layout = inflater.inflate(R.layout.item, null);TextView tv = (TextView) layout.findViewById(R.id.tv_item);String str = dataList.get(position);tv.setText(str);return layout;}@Overridepublic long getItemId(int position){return 0;}@Overridepublic Object getItem(int position){return null;}@Overridepublic int getCount(){return dataList.size();}});Utility.setListViewHeightBasedOnChildren(listview);}}
2.Utility代码
public class Utility{public static void setListViewHeightBasedOnChildren(ListView listView){ListAdapter listAdapter = listView.getAdapter();if (listAdapter == null){// pre-conditionreturn;}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);}}
