直接上代码把。主要是又一次给item measure高度，直接上代码把

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.MotionEvent;

import android.view.View;

import android.view.View.OnTouchListener;

import android.view.ViewGroup;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.BaseAdapter;

import android.widget.Button;

import android.widget.ListView;

import android.widget.RelativeLayout;

import android.widget.TextView;

public class MainActivity extends Activity {

	private ArrayList<MyData> myList = new ArrayList<MyData>();

	private myAdapter myAdapter;

	private LayoutInflater inflater = null;

	private int oldPostion = -1;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_main);

		final ListView list = (ListView) findViewById(R.id.draggable_list);

		MyData data = new MyData();

		data.name = "11";

		myList.add(data);

		data = new MyData();

		data.name = "22";

		myList.add(data);

		data = new MyData();

		data.name = "33";

		myList.add(data);

		data = new MyData();

		data.name = "44";

		myList.add(data);

		data = new MyData();

		data.name = "55";

		myList.add(data);

		data = new MyData();

		data.name = "66";

		myList.add(data);

		data = new MyData();

		data.name = "77";

		myList.add(data);

		inflater = LayoutInflater.from(this);

		TextView header = (TextView)inflater.inflate(R.layout.header, null);

		TextView footer = (TextView)inflater.inflate(R.layout.footer, null);

		//list.addFooterView(footer);

		//list.addHeaderView(header);

		myAdapter = new myAdapter();

		list.setAdapter(myAdapter);

		list.setOnItemClickListener(new OnItemClickListener() {

			@Override

			public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

				MyData data = myList.get(position);

				if (oldPostion == position) {

					if (data.expand)  {

						oldPostion = -1;

					}

					data.expand = !data.expand;

				}else{

					oldPostion = position;

					data.expand = true;

				}

				int totalHeight = 0;

				for(int i=0;i<myAdapter.getCount();i++) {

					View viewItem = myAdapter.getView(i, null, list);//这个非常重要。那个展开的item的measureHeight比其它的大

					viewItem.measure(0, 0);

					totalHeight += viewItem.getMeasuredHeight();

				}

				ViewGroup.LayoutParams params = list.getLayoutParams();

				params.height = totalHeight

						+ (list.getDividerHeight() * (list.getCount() - 1));

				list.setLayoutParams(params);

				myAdapter.notifyDataSetChanged();

			}

		});

		Button btn = (Button)findViewById(R.id.btn);

		btn.setOnClickListener(new View.OnClickListener() {

			@Override

			public void onClick(View v) {

			}

		});

	}

	private class myAdapter extends BaseAdapter{

		@Override

		public int getCount() {

			return myList.size();

		}

		@Override

		public Object getItem(int position) {

			return myList.get(position);

		}

		@Override

		public long getItemId(int position) {

			return position;

		}

		@Override

		public View getView(int position, View convertView, ViewGroup parent) {

			MyTag tag = new MyTag();

			MyData data = myList.get(position);

			if(convertView == null) {

				convertView = inflater.inflate(R.layout.item_layout, null);

				tag.item1 = (TextView)convertView.findViewById(R.id.item1);

				tag.item2 = (RelativeLayout)convertView.findViewById(R.id.item2);

				convertView.setTag(tag);

			}else{

				tag = (MyTag)convertView.getTag();

			}

			if(data.expand) {

				tag.item2.setVisibility(View.VISIBLE);

			}else{

				tag.item2.setVisibility(View.GONE);

			}

			tag.item1.setText(data.name);

			return convertView;

		}

	}

	private class MyTag{

		private TextView item1;

		private RelativeLayout item2;

	}

	private class MyData{

		boolean expand;

		String name;

	}

}

Layout:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="wrap_content"

    android:minHeight="50dp" >

    <TextView

        android:id="@+id/item1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="10dp"

        android:layout_centerHorizontal="true"

        android:gravity="center"

        android:text="Header"

        android:textColor="#000000"

        android:textSize="20sp" >

    </TextView>

    <RelativeLayout

        android:id="@+id/item2"

        android:layout_below="@id/item1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:minHeight="35dp"

        android:background="#fffeee"

        android:visibility="gone" >

        <TextView

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_centerInParent="true"

            android:gravity="center"

            android:text="Expand"

            android:textColor="#000000"

            android:textSize="16sp" >

        </TextView>

    </RelativeLayout>

</RelativeLayout>

效果图:

代码:http://download.csdn.net/detail/baidu_nod/7765251