安卓智能地图开发与实施六：离线基础底图 - ArcGIS Runtime SDK for Android（Version 100.0.0）

离线基础底图（Offline Tiled Layers）

离线基础底图最传统的方式是直接拷贝ArcGIS Server服务的切片成果，存在的问题是无论使用松散型还是紧凑型都包含太多碎小文件，部署不便。TPK文件便是为了解决多碎小文件问题。但是依然存在文件太大的问题，动辄十G甚至几十G。而矢量切片（VTPK）在于解决文件太大的问题。

TPK

对于TPK的生产，建议使用ArcGIS Desktop进行生成，对于自定义切片级别（Level of Detail）较为自如。ArcGIS Desktop也可以通过模型构建器将两个工具合为一个。使用ArcGIS Pro，若想自定义切片级别（Level of Detail）需要找个地图服务来支持。

TPK和服务切片文件夹调用类似，只是文件路径不同。
TPK：/sdcard/Hymn/basemap/basemap.tpk
服务切片文件夹：/sdcard/Hymn/basemap/gxksl2016

package hymn.esrichina.displayamapusingtpk;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;import com.esri.arcgisruntime.data.TileCache;
import com.esri.arcgisruntime.layers.ArcGISTiledLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.MapView;public class MainActivity extends AppCompatActivity {private MapView mainMapView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);try {String theOfflineTiledLayers = "/sdcard/Hymn/basemap/ImageBasemap.tpk";mainMapView = (MapView) findViewById(R.id.mainMapView);TileCache mainTileCache = new TileCache(theOfflineTiledLayers);ArcGISTiledLayer mainArcGISTiledLayer = new ArcGISTiledLayer(mainTileCache);Basemap mainBasemap = new Basemap(mainArcGISTiledLayer);ArcGISMap mainArcGISMap = new ArcGISMap(mainBasemap);mainMapView.setMap(mainArcGISMap);}catch (Exception e){}}
}

如何生产TPK参考：

ArcGIS Pro

http://pro.arcgis.com/zh-cn/pro-app/tool-reference/data-management/create-map-tile-package.htm

ArcGIS Desktop

http://desktop.arcgis.com/zh-cn/arcmap/latest/tools/data-management-toolbox/create-map-tile-package.htm

VTPK

和上章节“在线矢量切片”使用类似，只是将在线地址更换为了本地文件。例如：
/sdcard/nxgt/basemap/dzzhdjfb.vtpk


package hymn.esrichina.displayamapusingvtpk;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;import com.esri.arcgisruntime.layers.ArcGISTiledLayer;
import com.esri.arcgisruntime.layers.ArcGISVectorTiledLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.view.MapView;public class MainActivity extends AppCompatActivity {private MapView mainMapView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);try {String theOfflineTiledLayers = "/sdcard/Hymn/basemap/dzzhdjfb.vtpk";mainMapView = (MapView) findViewById(R.id.mainMapView);ArcGISVectorTiledLayer mainArcGISVectorTiledLayer = new ArcGISVectorTiledLayer(theOfflineTiledLayers);Basemap mainBasemap = new Basemap(mainArcGISVectorTiledLayer);ArcGISMap mainArcGISMap = new ArcGISMap(mainBasemap);mainMapView.setMap(mainArcGISMap);}catch (Exception e){String eResult = e.getMessage();}}
}

如何生产VTPK参考：

http://pro.arcgis.com/zh-cn/pro-app/tool-reference/data-management/create-vector-tile-package.htm

MMPK（Basemap）

通过ArcGIS Pro可以制作包含基础底图（Basemap）的MMPK，MMPK文件解析后，基础底图（Basemap）中的图层会解析为MobileBasemapLayer，只提供浏览功能。当然，亚洲字符的支持情况在安卓端不是特别好。

package hymn.esrichina.displayamapusingmmpkbasemap;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;import com.esri.arcgisruntime.loadable.LoadStatus;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.LayerList;
import com.esri.arcgisruntime.mapping.MobileMapPackage;
import com.esri.arcgisruntime.mapping.view.MapView;import java.util.List;public class MainActivity extends AppCompatActivity {private MapView mainMapView;private MobileMapPackage mainMobileMapPackage;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);try {String mainMMPKPath = "/sdcard/Hymn/basemap/MobileBasemapLayer.mmpk";mainMapView = (MapView) findViewById(R.id.mainMapView);mainMobileMapPackage =new MobileMapPackage(mainMMPKPath);mainMobileMapPackage.loadAsync();mainMobileMapPackage.addDoneLoadingListener(new Runnable() {@Overridepublic void run() {LoadStatus mainLoadStatus = mainMobileMapPackage.getLoadStatus();if (mainLoadStatus == LoadStatus.LOADED) {List<ArcGISMap> mainArcGISMapL = mainMobileMapPackage.getMaps();ArcGISMap mainArcGISMap = mainArcGISMapL.get(0);Basemap mainBasemap = mainArcGISMap.getBasemap();LayerList mainMMPKLL = mainArcGISMap.getOperationalLayers();mainMapView.setMap(mainArcGISMap);}}});} catch (Exception e) {}}
}

解析结果以MobileBasemapLayer对象包含在ArcGISMap对象的Basemap中。

如何生产MMPK，可以参考：

http://pro.arcgis.com/zh-cn/pro-app/tool-reference/data-management/create-mobile-map-package.htm

结尾

源程序包含：

DisplayAMapUsingMMPKBasemap
DisplayAMapUsingTPK
DisplayAMapUsingVTPK
请自行下载：
链接：http://pan.baidu.com/s/1o8BbX1K 密码：0162
若失效，可发邮件给韩源萌（polyline@126.com）索要。