Android Arcgis(16)、网络图层加载二

在上一讲，Android Arcgis(15)、网络图层加载一，简单介绍了加载网络服务。下面我们继续学习加载网络图层。

一、ArcGISDynamicMapServiceLayer

服务地址：
http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer，这是美国的高铁图。
用浏览器打开，有三个子图层，Single Fused Map Cache: false！

下面是ArcGISDynamicMapServiceLayer的介绍：

加载代码 ：

  private static final String DYNAMIC_USA_HIGHWAY_URL = "http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer";    private ArcGISDynamicMapServiceLayer usaHighwayLayer = null;    private MapView mMapView = null;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mMapView = (MapView) findViewById(R.id.map_view);        usaHighwayLayer = new ArcGISDynamicMapServiceLayer(DYNAMIC_USA_HIGHWAY_URL);        mMapView.addLayer(usaHighwayLayer);        usaHighwayLayer.setOnStatusChangedListener(new OnStatusChangedListener() {            @Override            public void onStatusChanged(Object o, STATUS status) {                if (status==STATUS.INITIALIZED){                    Log.i("huang","加载成功");                }else if(status==STATUS.INITIALIZATION_FAILED||status==STATUS.LAYER_LOADING_FAILED){                    Log.i("huang","加载失败");                }            }        });}

效果图

二、ArcGISFeatureLayer加载图层

服务地图
http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/0，也就是上面服务的子图层。

    ArcGISFeatureLayer arcGISFeatureLayer = new ArcGISFeatureLayer("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/0", ArcGISFeatureLayer.MODE.ONDEMAND);        mMapView.addLayer(arcGISFeatureLayer);        arcGISFeatureLayer.setRenderer(new SimpleRenderer(new SimpleLineSymbol(Color.argb(250, 52, 17, 255),2)));        arcGISFeatureLayer.setOnStatusChangedListener(new OnStatusChangedListener() {            @Override            public void onStatusChanged(Object o, STATUS status) {                if (status==STATUS.INITIALIZED){                    Log.i("huang","加载成功");                }else if(status==STATUS.INITIALIZATION_FAILED||status==STATUS.LAYER_LOADING_FAILED){                    Log.i("huang","加载失败");                }            }        });

注意要设置setRenderer，效果

ArcGISFeatureLayer 具有FeatureLayer的一些查询方法，与前面几讲里FeatureLayer查询相似，这里不再讲了。

//查询要素方法queryIds(Query query, CallbackListener<int[]> callback)queryFeatures(Query query, CallbackListener<FeatureSet> callback)

在http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StateCityHighway_USA/MapServer/0，页面底部，

点击Query进入查询要素界面，可直接 查询要素

where 1=1，点击Query(GET)，可得到以下结果集