var map, district, polygons = [],
            citycode;
        var provinceSelect = document.getElementById('province');
        var citySelect = document.getElementById('city');
        var districtSelect = document.getElementById('district');
        var areaSelect = document.getElementById('street');

        map = new AMap.Map('container', {
            resizeEnable: true,
            center: [116.30946, 39.937629],
            zoom: 3
        });

        AMapUI.loadUI(['control/BasicControl'], function(BasicControl) {
            var zoomCtrl1 = new BasicControl.Zoom({
                theme: 'dark'
            })
            map.addControl(zoomCtrl1);
        });

        AMap.plugin(['AMap.Scale'], function() {
                map.addControl(new AMap.Scale());
            })
            //为地图注册click事件获取鼠标点击出的经纬度坐标
        map.on('click', function(e) {
            document.getElementById("lnglat").value = e.lnglat.getLng() + ',' + e.lnglat.getLat();
            regeoCode();
        });
        var auto = new AMap.Autocomplete({
            input: "tipinput"
        });
        AMap.event.addListener(auto, "select", select); //注册监听，当选中某条记录时会触发
        function select(e) {
            if (e.poi && e.poi.location) {
                map.setZoom(15);
                map.setCenter(e.poi.location);
            }
        }

        var geocoder, marker;

        function geoCode() {
            if (!geocoder) {
                geocoder = new AMap.Geocoder({});
            }
            var address = document.getElementById('addressm').value;
            geocoder.getLocation(address, function(status, result) {
                if (status === 'complete' && result.geocodes.length) {
                    var lnglat = result.geocodes[0].location
                    document.getElementById('lnglat').value = lnglat;
                    if (!marker) {
                        marker = new AMap.Marker();
                        map.add(marker);
                    }
                    marker.setPosition(lnglat);
                    map.setFitView(marker);
                } else {
                    alert(JSON.stringify(result))
                }
            });
        }
 
        document.getElementById('addressm').onkeydown = function(e) {
            if (e.keyCode === 13) {
                geoCode();
                return false;
            }
            return true;
        };

        function regeoCode() {
            if (!geocoder) {
                geocoder = new AMap.Geocoder({
                    city: "010", //城市设为北京，默认：“全国”
                    radius: 1000 //范围，默认：500
                });
            }
            var lnglat = document.getElementById('lnglat').value.split(',');
            if (!marker) {
                marker = new AMap.Marker();
                map.add(marker);
            }
            marker.setPosition(lnglat);

            geocoder.getAddress(lnglat, function(status, result) {
                if (status === 'complete' && result.regeocode) {
                    var address = result.regeocode.formattedAddress;
                    document.getElementById('addressm').value = address;
                } else {
                    alert(JSON.stringify(result))
                }
            });
        }
        //行政区划查询
        var opts = {
            subdistrict: 1, //返回下一级行政区
            showbiz: false //最后一级返回街道信息
        };
        district = new AMap.DistrictSearch(opts); //注意：需要使用插件同步下发功能才能这样直接使用
        district.search('中国', function(status, result) {
            if (status == 'complete') {
                getData(result.districtList[0]);

            }
        });

        function getData(data, level) {


            //清空下一级别的下拉列表
            if (level === 'province') {
                citySelect.innerHTML = '';
                districtSelect.innerHTML = '';
                areaSelect.innerHTML = '';
            } else if (level === 'city') {
                districtSelect.innerHTML = '';
                areaSelect.innerHTML = '';
            } else if (level === 'district') {
                areaSelect.innerHTML = '';
            }

            var subList = data.districtList;
            if (subList) {
                var contentSub = new Option('--请选择--');
                var curlevel = subList[0].level;
                var curList = document.querySelector('#' + curlevel);
                curList.add(contentSub);
                for (var i = 0, l = subList.length; i < l; i++) {
                    var name = subList[i].name;
                    var levelSub = subList[i].level;
                    var cityCode = subList[i].citycode;
                    contentSub = new Option(name);
                    contentSub.setAttribute("value", levelSub);
                    contentSub.center = subList[i].center;
                    contentSub.adcode = subList[i].adcode;
                    curList.add(contentSub);
                }
                if (curlevel == "province") {
                    showCityInfo(curList)

                }

            }
        }

        function search(obj) {
            //清除地图上所有覆盖物
            for (var i = 0, l = polygons.length; i < l; i++) {
                polygons[i].setMap(null);
            }
            var option = obj[obj.options.selectedIndex];
            var keyword = option.text; //关键字
            var adcode = option.adcode;
            district.setLevel(option.value); //行政区级别
            district.setExtensions('all');
            //行政区查询
            //按照adcode进行查询可以保证数据返回的唯一性
            district.search(adcode, function(status, result) {
                if (status === 'complete') {

                    getData(result.districtList[0], obj.id);
                    getAddress();

                }
            });
        }

        function getAddress() {


            var address = "";
            var provinceText = provinceSelect[provinceSelect.options.selectedIndex].text;
            if (provinceText.length > 0) {
                address += provinceText;
            }

            var cityText = citySelect[citySelect.options.selectedIndex];
            if (citySelect && cityText.text && cityText.adcode) {
                address += cityText.text;
            }

            var districtText = districtSelect[districtSelect.options.selectedIndex];
            if (districtText && districtText.text && districtText.adcode) {
                address += districtText.text;
            }

            var areaText = areaSelect[areaSelect.options.selectedIndex];
            if (areaText && areaText.text && areaText.adcode) {
                address += areaText.text;
            }


            document.getElementById('addressm').value = address
            geoCode();
        }

        function setCenter(obj) {
            getAddress();
            //map.setCenter(obj[obj.options.selectedIndex].center)
        }


        //获取用户所在城市信息
        function showCityInfo(curList) {
            //实例化城市查询类
            var citysearch = new AMap.CitySearch();
            //自动获取用户IP，返回当前城市
            citysearch.getLocalCity(function(status, result) {
                if (status === 'complete' && result.info === 'OK') {
                    if (result && result.city && result.bounds) {
                        var cityinfo = result.city;
                        var citybounds = result.bounds;
                        var cityadcode = result.adcode;
                        var cityindex = 0;
                        document.getElementById('addressm').value = cityinfo;

                        for (var i = 0; i < curList.options.length; i++) {
                            if (cityadcode == curList.options[i].adcode) {
                                cityindex = i;
                                curList.options[cityindex].selected = true;
                                search(curList);
                                //geoCode();
                                break;
                            }

                        }
                    }
                } else {
                    console.log(result.info);
                }
            });
        }