【高德地图API】如何获得行政区域？如何制作行政规划图？

function byDistrict(){
var partition = new AMap.Partition(); //创建一个新的行政规划类
partition.byDistrict(district,city,byDistricty_CallBack); //行政规划查询
}

function byDistricty_CallBack(data){
showTime();document.getElementById("textUniqId").value = data.uniqid;
var resultStr="";
if(data.status =="E0")
{
var lineNum = data.list.length; //返回总数.
resultCount=lineNum;
var content="";
for(var i=0;i<lineNum;i++){
content += "<div style=\"cursor:pointer;\" onmouseover=openMarkerTipById1(this) onmouseout=clearbackground(this) onclick=\"drawpolygon('"+data.list[i].coords+"','"+data.list[i].name+"')\"><dl>";
content +="<dt>"+"区县名称："+data.list[i].name+"<dt>区县代码："+data.list[i].adcode+"</dt>"+"<dt>区县所属城市区号："+data.list[i].citycode+"</dt>";
content+="</dl></div>";
}
resultStr+=content;
}
else if(data.status =="E1")
{
resultStr = "未查找到任何结果!<br />建议：<br />1.请确保所有字词拼写正确。<br />2.尝试不同的关键字。<br />3.尝试更宽泛的关键字。";
}
else
{
resultStr= "错误信息："+data.state+"请对照API Server v2.0.0 简明提示码对照表查找错误类型";
}
document.getElementById("result").innerHTML = resultStr;
}

function drawpolygon(arr,name){
mapObj.clearMap();
var polygonArr = new Array();
var district = arr.split(";");
var lnglat = new Array();
for(var e=0;e<district.length-1;e++){
var lnglat=district[e].split(",");
polygonArr.push(new AMap.LngLat(lnglat[0],lnglat[1]));
}
polygon=new AMap.Polygon({
path:polygonArr,//设置多边形边界路径
strokeColor:"#0000ff", //线颜色
strokeOpacity:0.2, //线透明度
strokeWeight:3, //线宽
fillColor: "#f5deb3", //填充色
fillOpacity: 0.35//填充透明度
});
polygon.setMap(mapObj);
mapObj.setFitView();
}