高德地图 Javascript API 入门（四）

高德地图 Javascript API 入门（四）

地图覆盖物

覆盖物

类名	说明	是否插件
AMap.Marker	点标记	否
AMap.Icon	覆盖物>点标记>复杂点标记对象，对普通点标记Marker 的扩展	否
AMap.Polyline	覆盖物>折线	否
AMap.Polygon	覆盖物>多边形	否
AMap.Circle	覆盖物>圆	否
AMap.GroundImage	图片覆盖物	否
AMap.ContextMenu	地图右键菜单	否

#### 点标记 JS

    var marker=new AMap.Marker({
        map:map,
        position:new AMap.LngLat(112.736465,37.696495)
    });

预览

自定义点标记

JS

    var marker=new AMap.Marker({
        map:map,
        position:new AMap.LngLat(112.736465,37.696495),
        icon:new AMap.Icon({
            image:"https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=2803620233,1906638381&fm=23&gp=0.jpg",
            size:[72,72],
            imageSize:[36,36]
        }),
        draggable:true,
        raiseOnDrag:true,
        shape:new AMap.MarkerShape({
            type:"circle",
            coords:[112.736465,37.696495,100]
        }),
        label:{
            content:"label",
            offset:new AMap.Pixel(0,-36)
        }
    });

预览

多边形

JS

    var lineArr=[
        [112.49157,37.897392],
        [112.602806,37.898747],
        [112.608643,37.797355],
        [112.49775,37.79627]
    ];
    var polygon=new AMap.Polygon({
        map:map,
        path:lineArr
    });

预览

右键菜单

JS

    var contextmenu=new AMap.ContextMenu();
    var pos=[];
    // 添加右键菜单内容项
    contextmenu.addItem("放大",function () {
        map.zoomIn();
    },0);
    contextmenu.addItem("缩小",function () {
        map.zoomOut();
    },1);
    contextmenu.addItem("添加点标记",function () {
        var marker=new AMap.Marker({
            map:map,
            position:pos
        });
    },2);
    // 监听鼠标右击事件
    map.on("rightclick",function (e) {
        contextmenu.open(map,e.lnglat);
        pos=e.lnglat;
    });

预览

信息窗体

信息窗体

JS

    var infowindow=new AMap.InfoWindow({
        isCustom:false,
        content:"
Hello,Yuanping
",
        offset:new AMap.Pixel(0,-36),
        showShadow:true,
        closeWhenClickMap:true,
        autoMove:true
    });
    infowindow.open(map,new AMap.LngLat(112.736465,38.696495));

预览

小练习

鼠标划过山西大剧院时，弹出信息窗体

JS

    // 坐标
    var lineArr=[
        [112.532802,37.808395],
        [112.533049,37.808395],
        [112.533124,37.808476],
        [112.533521,37.808459],
        [112.533558,37.808391],
        [112.533832,37.808391],
        [112.533848,37.80792],
        [112.534159,37.807959],
        [112.534159,37.80748],
        [112.533826,37.807514],
        [112.533832,37.807179],
        [112.533966,37.806848],
        [112.533376,37.806683],
        [112.533054,37.806687],
        [112.532684,37.806878],
        [112.53278,37.807191],
        [112.532796,37.80745],
        [112.532013,37.807285],
        [112.532019,37.808213],
        [112.532796,37.808018],
        [112.532818,37.808412]
    ];
    // 实例化Polygon类
    var polygon=new AMap.Polygon({
        map:map,
        path:lineArr
    });
    // 适应窗口
    map.setFitView();
    // 实例化信息窗体类
    var infowindow=new AMap.InfoWindow({
        content:"
太原市
山西大剧院
",
        closeWhenClickMap:true
    });
    // 监听鼠标移入、移除事件
    polygon.on("mouseover",function (e) {
        infowindow.open(map,map.getCenter());
    }).on("mouseout",function () {
        infowindow.close();
    });

预览

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参考来源：http://lbs.amap.com/
作者：Yangfan