获取后台数据在高德地图上画线

        var data =  Iphone.data; //从后台获取的所有数据
        var geocoder = new AMap.Geocoder(); //创建地图
        var cityArr = data.data.citys;   //获取城市名（一个数组）
        var lineArr =[];
        var obj = {};
        for(var i in cityArr) {
           //闭包渲染避免顺序错乱
            (function(index) {
                geocoder.getLocation(cityArr[i], function(status, result) {
                    if (status === 'complete' && result.info === 'OK') {
                        wlggIphone.methods.geocoder_CallBack(result);
                        lineArr.push(result.geocodes[0].location);
                        obj[cityArr[index]] = result.geocodes[0].location;
                        if(lineArr.length == cityArr.length) {
                            var arrSolid = [];
                            var arrDashed = [];
                            for(var j in cityArr) {
                                if(j < (cityArr.length - 2)) {
                                    arrSolid.push(obj[cityArr[j]]);
                                }else if(j == cityArr.length - 2) {
                                    arrSolid.push(obj[cityArr[j]]);
                                    arrDashed.push(obj[cityArr[j]]);
                                }else {
                                    arrDashed.push(obj[cityArr[j]]);
                                }
                            }
                            var polyline = new AMap.Polyline({   
                                path: arrSolid,  
                                strokeColor:"#66C5FF",//线颜色
                                strokeOpacity:1,//线透明度  
                                strokeWeight:3,//线宽
                                strokeStyle:"solid"//线样式  
                            });  
                            polyline.setMap(map);
                            var polyline1 = new AMap.Polyline({   
                                path: arrDashed,  
                                strokeColor:"#66C5FF",//线颜色
                                strokeOpacity:1,//线透明度  
                                strokeWeight:1,//线宽
                                strokeStyle:"dashed"//线样式  
                            });  
                            polyline1.setMap(map);
                           
                        } 
                    }
                });
            })(i)
        }