SceneView
Runtime100是用了一个GeoView类作为地图的基类直接继承于ViewGroup，然后MapView和SceneView分别作为二维和三维地图的容器继承于GeoView。
其实把SceneView当做MapView，把ArcGISScene当做ArcGISMap就行，于是我们简单尝试下。首先是在XML文件里添加SceneView：
<com.esri.arcgisruntime.mapping.view.SceneView
android:id="@+id/sceneview"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.esri.arcgisruntime.mapping.view.SceneView>public class SceneViewActivity extends AppCompatActivity {
private SceneView mSceneView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scene_view);
mSceneView = (SceneView) findViewById(R.id.sceneview);
ArcGISScene arcGISScene = new ArcGISScene();
mSceneView.setScene(arcGISScene);
}
@Override
protected void onResume() {
super.onResume();
mSceneView.resume();
}
@Override
protected void onPause() {
super.onPause();
mSceneView.pause();
}
@Override
protected void onDestroy() {
super.onDestroy();
mSceneView.dispose();
}
}
运行下，看看效果：
可以看出其实SceneView的基本底图就是一个地球，然后我们给它设置个瓦片图层作为底图：
mSceneView = (SceneView) findViewById(R.id.sceneview);
ArcGISScene arcGISScene = new ArcGISScene();
ArcGISTiledLayer arcGISTiledLayer = new ArcGISTiledLayer(
"https://services.arcgisonline.com/ArcGIS/rest/services/World_Imagery/MapServer");
Basemap basemap = new Basemap(arcGISTiledLayer);
arcGISScene.setBasemap(basemap);
mSceneView.setScene(arcGISScene);
可以看出这其实就是把一个切片图层展示在地球上，可以进行三维操作而已。
展示三维场景（ArcGISScene）
三维通过接近真实世界的角度来可视化数据信息
三维场景的使用类似于MapView和ArcGISMap，二维数据皆可加入三维场景
三维场景不同于二维，其具备高程表面（elevation surface）
无高程表面（elevation surface）
private SceneView mSceneView;
private String brest_buildings = " http://tiles.arcgis.com/tiles/P3ePLMYs2RVChkJx/arcgis/rest/services/Buildings_Brest/SceneServer";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scene_layer);
mSceneView = (SceneView) findViewById(R.id.sceneView);
ArcGISScene scene = new ArcGISScene();
scene.setBasemap(Basemap.createImagery());
mSceneView.setScene(scene);
// add a scene service to the scene for viewing buildings
ArcGISSceneLayer sceneLayer = new ArcGISSceneLayer(brest_buildings);
scene.getOperationalLayers().add(sceneLayer);
// 设置三维场景视角镜头（camera）
Camera camera = new Camera(48.378, -4.494, 200, 345, 65, 0);
mSceneView.setViewpointCamera(camera);
}
使用高程表面（ArcGISTiledElevationSource、RasterElevationSource）
ArcGISTiledElevationSource：将在线服务作为高程表面
RasterElevationSource：将本地DEM文件作为高程表面
private SceneView mSceneView;
private String elevation_image_service = "http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display_scene);
mSceneView = (SceneView) findViewById(R.id.sceneView);
ArcGISScene scene = new ArcGISScene();
scene.setBasemap(Basemap.createImagery());
mSceneView.setScene(scene);
ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(elevation_image_service);
scene.getBaseSurface().getElevationSources().add(elevationSource);
Camera camera = new Camera(28.4, 83.9, 10010.0, 10.0, 80.0, 0.0);
mSceneView.setViewpointCamera(camera);
}
设置三维场景视角镜头（camera）
纬度（Latitude）、经度（longitude）和高程（elevation）
Heading：镜头水平朝向
0度表示指北，从0度逐渐增加，镜头顺时针旋转，360度回到0度指北。
Pitch：镜头垂直朝向
0度表示垂直俯视地球，从0度逐渐增加，镜头沿其水平朝向，从俯视地球朝天空旋转，360度回到0度俯视地球。
public Camera(double latitude, double longitude, double altitude, double heading,
double pitch, double roll)
表面置放模式（LayerSceneProperties.SurfacePlacement）
与二维不同的是，通过GraphicsOverlay添加空间要素时，需要设置表面置放模式，默认为DRAPED。
DRAPED：空间要素紧贴场景表面（surface layer），不考虑空间要素的高程值（Z-values）
ABSOLUTE：空间要素通过其高程值（Z-values）设置距离球体表面（海平面）的高度
RELATIVE：空间要素通过其高程值（Z-values）设置距离场景表面（surface layer）的高度
球体表面和场景表面的差异在于是否使用高程表面，若不使用高程表面ABSOLUTE和RELATIVE在三维场景中展示的位置相同。
private SceneView mSceneView;
private String elevation_image_service = "http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_surfac_placement);
mSceneView = (SceneView) findViewById(R.id.sceneView);
// create a scene and add a basemap to it
ArcGISScene agsScene = new ArcGISScene();
agsScene.setBasemap(Basemap.createImagery());
mSceneView.setScene(agsScene);
// add base surface for elevation data
ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource(elevation_image_service);
agsScene.getBaseSurface().getElevationSources().add(elevationSource);
// add a camera and initial camera position
Camera camera = new Camera(53.04, -4.04, 1300, 0, 90.0, 0);
mSceneView.setViewpointCamera(camera);
// create overlays with elevation modes
GraphicsOverlay drapedOverlay = new GraphicsOverlay();
drapedOverlay.getSceneProperties().setSurfacePlacement(LayerSceneProperties.SurfacePlacement.DRAPED);
mSceneView.getGraphicsOverlays().add(drapedOverlay);
GraphicsOverlay relativeOverlay = new GraphicsOverlay();
relativeOverlay.getSceneProperties().setSurfacePlacement(LayerSceneProperties.SurfacePlacement.RELATIVE);
mSceneView.getGraphicsOverlays().add(relativeOverlay);
GraphicsOverlay absoluteOverlay = new GraphicsOverlay();
absoluteOverlay.getSceneProperties().setSurfacePlacement(LayerSceneProperties.SurfacePlacement.ABSOLUTE);
mSceneView.getGraphicsOverlays().add(absoluteOverlay);
// create point for graphic location
Point point = new Point(-4.04, 53.06, 1000, camera.getLocation().getSpatialReference());
// create a red (0xFFFF0000) circle symbol
SimpleMarkerSymbol circleSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, 0xFFFF0000, 10);
// create a text symbol for each elevation mode
TextSymbol drapedText = new TextSymbol(10, "DRAPED", 0xFFFFFFFF, TextSymbol.HorizontalAlignment.LEFT,
TextSymbol.VerticalAlignment.MIDDLE);
TextSymbol relativeText = new TextSymbol(10, "RELATIVE", 0xFFFFFFFF, TextSymbol.HorizontalAlignment.LEFT,
TextSymbol.VerticalAlignment.MIDDLE);
TextSymbol absoluteText = new TextSymbol(10, "ABSOLUTE", 0xFFFFFFFF, TextSymbol.HorizontalAlignment.LEFT,
TextSymbol.VerticalAlignment.MIDDLE);
// add the point graphic and text graphic to the corresponding graphics
// overlay
drapedOverlay.getGraphics().add(new Graphic(point, circleSymbol));
drapedOverlay.getGraphics().add(new Graphic(point, drapedText));
relativeOverlay.getGraphics().add(new Graphic(point, circleSymbol));
relativeOverlay.getGraphics().add(new Graphic(point, relativeText));
absoluteOverlay.getGraphics().add(new Graphic(point, circleSymbol));
absoluteOverlay.getGraphics().add(new Graphic(point, absoluteText));
}PortalItem
mSceneView = findViewById(R.id.sceneView);
// get the portal url and portal item from ArcGIS online
Portal portal = new Portal("http://www.arcgis.com/", false);
PortalItem portalItem = new PortalItem(portal, "a13c3c3540144967bc933cb5e498b8e4");
ArcGISScene scene = new ArcGISScene(portalItem);
mSceneView.setScene(scene);
三维场景中的可视化
三维场景（SceneView 、ArcGISScene）中具备更多的符号化方式来传递信息，包括SimpleMarkerSceneSymbol、ModelMarkerSymbol、DistanceCompositeSceneSymbol以及空间要素拉伸。
给大家推荐一篇好的博客：