问题描述

为什么用handler接收不到list对象

这是错误提示：

at android.os.Handler.handleCallback(Handler.java:615)

at android.os.Handler.dispatchMessage(Handler.java:92)at android.os.Looper.loop(Looper.java:153)at android.app.ActivityThread.main(ActivityTh

这是代码：

```private Handler listHandler = new Handler() {
public void handleMessage(Message msg) {

        List<Map<String String>> result =  (List<Map<String String>>) msg.obj;        switch (msg.what) {        case AutoListView.REFRESH:            lv_wanzheng.onRefreshComplete();            //listCount.clear();            listCount.addAll(result);            break;        case AutoListView.LOAD:            lv_wanzheng.onLoadComplete();            listCount.addAll(result);            break;        }        lv_wanzheng.setResultSize(result.size());        wanzhengAdapter.notifyDataSetChanged();    };};

new Thread(new Runnable() {

        @Override        public void run() {            Message msg = new Message();            msg.what = whatNum;            msg.obj = getData();            listHandler.sendMessage(msg);        }    }).start();    private List<Map<String String>> getData() {    JsonMessage jm = new JsonMessage();    String[] title = jm.getTitle();    String[] time = jm.getTime();    String[] image1 = jm.getimage1();    String[] image2 = jm.getimage2();    String[] url = jm.getUrl();    List<Map<String String>> listdata = new ArrayList<Map<String String>>();    for (int i = 0; i < image1.length; i++) {        Map<String String> map = new HashMap<String String>();        map.put(""title"" title[i]);        map.put(""time"" time[i]);        map.put(""image1"" image1[i]);        map.put(""image2"" image2[i]);        map.put(""url"" url[i]);        listdata.add(map);    }    return listdata;}

解决方案

不能直接传递对象，要序列化，msg.obj = (Parcelable) object
接收时，MyObject objectRcvd = (MyObject) msg.getData().getParcelable(""MyObject"");