// 搜索function search_by_PY(pinyin) {    // 置空    var after_search_listData = [];    // 清空数据    do_listData.removeAll();    // 存储请求的数据    do_listData.addData(listData);    if (pinyin == "") {        // do_ListView_news刷新显示        listView.refreshItems();        return;    }    deviceone.print("listdata : "+do_listData.getCount());    for (var i = 0; i < do_listData.getCount(); i++) {        var cell_data = do_listData.getOne(i);        deviceone.print("cell 的值 " + JSON.stringify(cell_data));        if (cell_data.py.indexOf(pinyin.toUpperCase()) > 0) {            after_search_listData.push(cell_data)            deviceone.print("筛选剩下的值:" + JSON.stringify(after_search_listData));        }        deviceone.print(JSON.stringify(after_search_listData));            }    // 添加到绑定的数据中    do_listData.removeAll();    do_listData.addData(after_search_listData);    // do_ListView_news刷新显示    listView.refreshItems();}

请求的数据是这样的 : 

[{"id":"4","name":"文工团家属院","count":"1","area":"2625.84","py":"WGTJZY"},{"id":"6","name":"建安公司","count":"2","area":"6939.18","py":"JAGS"}]