1、上一篇文章arcgis for android 入门与提高（四）去掉属性标记和水印，接下来介绍国内常用的专业级底图：天地图。
2、esri公司开发的arcgis android包支持服务数据加载、矢量数据加载、栅格数据加载等各种类型的地理数据，同时提供了二维和三维的显示控件，在开发者环境下可以使用开发包的全部功能，可以说是gis爱好者的福利，esri同时提供了空间参考，包括地理坐标和投影坐标，全球范围内的坐标系基本全部收纳，国内目前由于政策的改变，主要使用2000坐标系，在政府事业单位对底图也有一定要求，为了响应国家政策一般使用天地图作为底图，本人一开始使用的是百度地图API作为底图，后来又改用天地图-_-，百度地图提供了强大的Android SDK，开发者注册即可使用，官网也提供了详细的例子，可以说非常方便，本来以为天地图跟百度地图一样也能使用SDK，但是一直加载不上，联系天地图官方回答是已经不再支持Android SDK，但是可以使用服务，所以就放弃了SDK，转到服务的加载，天地图官网国家地理信息公共服务平台 天地图
3、从2019年开始天地图开发者需要配置自己的密钥，直接申请key即可，地址：天地图API
从下图可以看到服务地址的后面几位是?tk=您的密钥，经过实测应该是&tk=您的密钥，而且只能用球面墨卡托投影中的服务地址。
4、通过网上资料知道已经有封装好的Java天地图类，而且以前的服务地址不变，只需要加上&tk=您的密钥，下面是我使用的封装好的类，类名TianDiTuMethodsClass，
复制下面的代码：
package com.example.包名;
import com.esri.arcgisruntime.arcgisservices.LevelOfDetail;
import com.esri.arcgisruntime.arcgisservices.TileInfo;
import com.esri.arcgisruntime.geometry.Envelope;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.layers.WebTiledLayer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* 天地图
*/
public class TianDiTuMethodsClass {
private static final List<String> SubDomain = Arrays.asList("t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7");
private static final String URL_VECTOR_2000 = "http://{subDomain}.tianditu.com/DataServer?T=vec_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_VECTOR_ANNOTATION_CHINESE_2000 = "http://{subDomain}.tianditu.com/DataServer?T=cva_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_VECTOR_ANNOTATION_ENGLISH_2000 = "http://{subDomain}.tianditu.com/DataServer?T=eva_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_2000 = "http://{subDomain}.tianditu.com/DataServer?T=img_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_ANNOTATION_CHINESE_2000 = "http://{subDomain}.tianditu.com/DataServer?T=cia_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_ANNOTATION_ENGLISH_2000 = "http://{subDomain}.tianditu.com/DataServer?T=eia_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_TERRAIN_2000 = "http://{subDomain}.tianditu.com/DataServer?T=ter_c&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_TERRAIN_ANNOTATION_CHINESE_2000 = "http://{subDomain}.tianditu.com/DataServer?T=cta_c&x={col}&y={row}&l={level}&tk=您的密钥";
public static final String URL_VECTOR_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=vec_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_VECTOR_ANNOTATION_CHINESE_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=cva_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_VECTOR_ANNOTATION_ENGLISH_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=eva_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=img_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_ANNOTATION_CHINESE_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=cia_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_IMAGE_ANNOTATION_ENGLISH_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=eia_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_TERRAIN_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=ter_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final String URL_TERRAIN_ANNOTATION_CHINESE_MERCATOR = "http://{subDomain}.tianditu.com/DataServer?T=cta_w&x={col}&y={row}&l={level}&tk=您的密钥";
private static final int DPI = 96;
private static final int minZoomLevel = 1;
private static final int maxZoomLevel = 18;
private static final int tileWidth = 256;
private static final int tileHeight = 256;
private static final String LAYER_NAME_VECTOR = "vec";
private static final String LAYER_NAME_VECTOR_ANNOTATION_CHINESE = "cva";
private static final String LAYER_NAME_VECTOR_ANNOTATION_ENGLISH = "eva";
private static final String LAYER_NAME_IMAGE = "img";
private static final String LAYER_NAME_IMAGE_ANNOTATION_CHINESE = "cia";
private static final String LAYER_NAME_IMAGE_ANNOTATION_ENGLISH = "eia";
private static final String LAYER_NAME_TERRAIN = "ter";
private static final String LAYER_NAME_TERRAIN_ANNOTATION_CHINESE = "cta";
private static final SpatialReference SRID_2000 = SpatialReference.create(4490);
private static final SpatialReference SRID_MERCATOR = SpatialReference.create(102100);
private static final double X_MIN_2000 = -180;
private static final double Y_MIN_2000 = -90;
private static final double X_MAX_2000 = 180;
private static final double Y_MAX_2000 = 90;
private static final double X_MIN_MERCATOR = -20037508.3427892;
private static final double Y_MIN_MERCATOR = -20037508.3427892;
private static final double X_MAX_MERCATOR = 20037508.3427892;
private static final double Y_MAX_MERCATOR = 20037508.3427892;
private static final Point ORIGIN_2000 = new Point(-180, 90, SRID_2000);
private static final Point ORIGIN_MERCATOR = new Point(-20037508.3427892, 20037508.3427892, SRID_MERCATOR);
private static final Envelope ENVELOPE_2000 = new Envelope(X_MIN_2000, Y_MIN_2000, X_MAX_2000, Y_MAX_2000, SRID_2000);
private static final Envelope ENVELOPE_MERCATOR = new Envelope(X_MIN_MERCATOR, Y_MIN_MERCATOR, X_MAX_MERCATOR, Y_MAX_MERCATOR, SRID_MERCATOR);
private static final double[] SCALES = {
2.958293554545656E8, 1.479146777272828E8,
7.39573388636414E7, 3.69786694318207E7,
1.848933471591035E7, 9244667.357955175,
4622333.678977588, 2311166.839488794,
1155583.419744397, 577791.7098721985,
288895.85493609926, 144447.92746804963,
72223.96373402482, 36111.98186701241,
18055.990933506204, 9027.995466753102,
4513.997733376551, 2256.998866688275,
1128.4994333441375
};
private static final double[] RESOLUTIONS_MERCATOR = {
78271.51696402048, 39135.75848201024,
19567.87924100512, 9783.93962050256,
4891.96981025128, 2445.98490512564,
1222.99245256282, 611.49622628141,
305.748113140705, 152.8740565703525,
76.43702828517625, 38.21851414258813,
19.109257071294063, 9.554628535647032,
4.777314267823516, 2.388657133911758,
1.194328566955879, 0.5971642834779395,
0.298582141738970};
private static final double[] RESOLUTIONS_2000 = {
0.7031249999891485, 0.35156249999999994,
0.17578124999999997, 0.08789062500000014,
0.04394531250000007, 0.021972656250000007,
0.01098632812500002, 0.00549316406250001,
0.0027465820312500017, 0.0013732910156250009,
0.000686645507812499, 0.0003433227539062495,
0.00017166137695312503, 0.00008583068847656251,
0.000042915344238281406, 0.000021457672119140645,
0.000010728836059570307, 0.000005364418029785169};
public static WebTiledLayer CreateTianDiTuTiledLayer(String layerType) {
return CreateTianDiTuTiledLayer(getTianDiTuLayerType(layerType));
}
public static WebTiledLayer CreateTianDiTuTiledLayer(LayerType layerType) {
WebTiledLayer webTiledLayer = null;
String mainUrl = "";
String mainName = "";
TileInfo mainTileInfo = null;
Envelope mainEnvelope = null;
boolean mainIs2000 = false;
try {
switch (layerType) {
case TIANDITU_VECTOR_2000:
mainUrl = URL_VECTOR_2000;
mainName = LAYER_NAME_VECTOR;
mainIs2000 = true;
break;
case TIANDITU_VECTOR_MERCATOR:
mainUrl = URL_VECTOR_MERCATOR;
mainName = LAYER_NAME_VECTOR;
break;
case TIANDITU_IMAGE_2000:
mainUrl = URL_IMAGE_2000;
mainName = LAYER_NAME_IMAGE;
mainIs2000 = true;
break;
case TIANDITU_IMAGE_ANNOTATION_CHINESE_2000:
mainUrl = URL_IMAGE_ANNOTATION_CHINESE_2000;
mainName = LAYER_NAME_IMAGE_ANNOTATION_CHINESE;
mainIs2000 = true;
break;
case TIANDITU_IMAGE_ANNOTATION_ENGLISH_2000:
mainUrl = URL_IMAGE_ANNOTATION_ENGLISH_2000;
mainName = LAYER_NAME_IMAGE_ANNOTATION_ENGLISH;
mainIs2000 = true;
break;
case TIANDITU_IMAGE_ANNOTATION_CHINESE_MERCATOR:
mainUrl = URL_IMAGE_ANNOTATION_CHINESE_MERCATOR;
mainName = LAYER_NAME_IMAGE_ANNOTATION_CHINESE;
break;
case TIANDITU_IMAGE_ANNOTATION_ENGLISH_MERCATOR:
mainUrl = URL_IMAGE_ANNOTATION_ENGLISH_MERCATOR;
mainName = LAYER_NAME_IMAGE_ANNOTATION_ENGLISH;
break;
case TIANDITU_IMAGE_MERCATOR:
mainUrl = URL_IMAGE_MERCATOR;
mainName = LAYER_NAME_IMAGE;
break;
case TIANDITU_VECTOR_ANNOTATION_CHINESE_2000:
mainUrl = URL_VECTOR_ANNOTATION_CHINESE_2000;
mainName = LAYER_NAME_VECTOR_ANNOTATION_CHINESE;
mainIs2000 = true;
break;
case TIANDITU_VECTOR_ANNOTATION_ENGLISH_2000:
mainUrl = URL_VECTOR_ANNOTATION_ENGLISH_2000;
mainName = LAYER_NAME_VECTOR_ANNOTATION_ENGLISH;
mainIs2000 = true;
break;
case TIANDITU_VECTOR_ANNOTATION_CHINESE_MERCATOR:
mainUrl = URL_VECTOR_ANNOTATION_CHINESE_MERCATOR;
mainName = LAYER_NAME_VECTOR_ANNOTATION_CHINESE;
break;
case TIANDITU_VECTOR_ANNOTATION_ENGLISH_MERCATOR:
mainUrl = URL_VECTOR_ANNOTATION_ENGLISH_MERCATOR;
mainName = LAYER_NAME_VECTOR_ANNOTATION_ENGLISH;
break;
case TIANDITU_TERRAIN_2000:
mainUrl = URL_TERRAIN_2000;
mainName = LAYER_NAME_TERRAIN;
mainIs2000 = true;
break;
case TIANDITU_TERRAIN_ANNOTATION_CHINESE_2000:
mainUrl = URL_TERRAIN_ANNOTATION_CHINESE_2000;
mainName = LAYER_NAME_TERRAIN_ANNOTATION_CHINESE;
mainIs2000 = true;
break;
case TIANDITU_TERRAIN_MERCATOR:
mainUrl = URL_TERRAIN_MERCATOR;
mainName = LAYER_NAME_TERRAIN;
break;
case TIANDITU_TERRAIN_ANNOTATION_CHINESE_MERCATOR:
mainUrl = URL_TERRAIN_ANNOTATION_CHINESE_MERCATOR;
mainName = LAYER_NAME_TERRAIN_ANNOTATION_CHINESE;
break;
}
List<LevelOfDetail> mainLevelOfDetail = new ArrayList<LevelOfDetail>();
Point mainOrigin = null;
if (mainIs2000 == true) {
for (int i = minZoomLevel; i <= maxZoomLevel; i++) {
LevelOfDetail item = new LevelOfDetail(i, RESOLUTIONS_2000[i - 1], SCALES[i - 1]);
mainLevelOfDetail.add(item);
}
mainEnvelope = ENVELOPE_2000;
mainOrigin = ORIGIN_2000;
} else {
for (int i = minZoomLevel; i <= maxZoomLevel; i++) {
LevelOfDetail item = new LevelOfDetail(i, RESOLUTIONS_MERCATOR[i - 1], SCALES[i - 1]);
mainLevelOfDetail.add(item);
}
mainEnvelope = ENVELOPE_MERCATOR;
mainOrigin = ORIGIN_MERCATOR;
}
mainTileInfo = new TileInfo(
DPI,
TileInfo.ImageFormat.PNG24,
mainLevelOfDetail,
mainOrigin,
mainOrigin.getSpatialReference(),
tileHeight,
tileWidth
);
webTiledLayer = new WebTiledLayer(
mainUrl,
SubDomain,
mainTileInfo,
mainEnvelope);
webTiledLayer.setName(mainName);
webTiledLayer.loadAsync();
} catch (Exception e) {
e.getCause();
}
return webTiledLayer;
}
protected static LayerType getTianDiTuLayerType(String layerType) {
LayerType result = LayerType.TIANDITU_VECTOR_2000;
switch (layerType) {
/**
* 天地图矢量墨卡托投影地图服务
*/
case "TIANDITU_VECTOR_MERCATOR":
result = LayerType.TIANDITU_VECTOR_MERCATOR;
break;
/**
* 天地图矢量墨卡托中文标注
*/
case "TIANDITU_VECTOR_ANNOTATION_CHINESE_MERCATOR":
result = LayerType.TIANDITU_VECTOR_ANNOTATION_CHINESE_MERCATOR;
break;
/**
* 天地图矢量墨卡托英文标注
*/
case "TIANDITU_VECTOR_ANNOTATION_ENGLISH_MERCATOR":
result = LayerType.TIANDITU_VECTOR_ANNOTATION_ENGLISH_MERCATOR;
break;
/**
* 天地图影像墨卡托投影地图服务
*/
case "TIANDITU_IMAGE_MERCATOR":
result = LayerType.TIANDITU_IMAGE_MERCATOR;
break;
/**
* 天地图影像墨卡托投影中文标注
*/
case "TIANDITU_IMAGE_ANNOTATION_CHINESE_MERCATOR":
result = LayerType.TIANDITU_IMAGE_ANNOTATION_CHINESE_MERCATOR;
break;
/**
* 天地图影像墨卡托投影英文标注
*/
case "TIANDITU_IMAGE_ANNOTATION_ENGLISH_MERCATOR":
result = LayerType.TIANDITU_IMAGE_ANNOTATION_ENGLISH_MERCATOR;
break;
/**
* 天地图地形墨卡托投影地图服务
*/
case "TIANDITU_TERRAIN_MERCATOR":
result = LayerType.TIANDITU_TERRAIN_MERCATOR;
break;
/**
* 天地图地形墨卡托投影中文标注
*/
case "TIANDITU_TERRAIN_ANNOTATION_CHINESE_MERCATOR":
result = LayerType.TIANDITU_TERRAIN_ANNOTATION_CHINESE_MERCATOR;
break;
/**
* 天地图矢量国家2000坐标系地图服务
*/
case "TIANDITU_VECTOR_2000":
result = LayerType.TIANDITU_VECTOR_2000;
break;
/**
* 天地图矢量国家2000坐标系中文标注
*/
case "TIANDITU_VECTOR_ANNOTATION_CHINESE_2000":
result = LayerType.TIANDITU_VECTOR_ANNOTATION_CHINESE_2000;
break;
/**
* 天地图矢量国家2000坐标系英文标注
*/
case "TIANDITU_VECTOR_ANNOTATION_ENGLISH_2000":
result = LayerType.TIANDITU_VECTOR_ANNOTATION_ENGLISH_2000;
break;
/**
* 天地图影像国家2000坐标系地图服务
*/
case "TIANDITU_IMAGE_2000":
result = LayerType.TIANDITU_IMAGE_2000;
break;
/**
* 天地图影像国家2000坐标系中文标注
*/
case "TIANDITU_IMAGE_ANNOTATION_CHINESE_2000":
result = LayerType.TIANDITU_IMAGE_ANNOTATION_CHINESE_2000;
break;
/**
* 天地图影像国家2000坐标系英文标注
*/
case "TIANDITU_IMAGE_ANNOTATION_ENGLISH_2000":
result = LayerType.TIANDITU_IMAGE_ANNOTATION_ENGLISH_2000;
break;
/**
* 天地图地形国家2000坐标系地图服务
*/
case "TIANDITU_TERRAIN_2000":
result = LayerType.TIANDITU_TERRAIN_2000;
break;
/**
* 天地图地形国家2000坐标系中文标注
*/
case "TIANDITU_TERRAIN_ANNOTATION_CHINESE_2000":
result = LayerType.TIANDITU_TERRAIN_ANNOTATION_CHINESE_2000;
break;
}
return result;
}
public enum LayerType {
/**
* 天地图矢量墨卡托投影地图服务
*/
TIANDITU_VECTOR_MERCATOR,
/**
* 天地图矢量墨卡托中文标注
*/
TIANDITU_VECTOR_ANNOTATION_CHINESE_MERCATOR,
/**
* 天地图矢量墨卡托英文标注
*/
TIANDITU_VECTOR_ANNOTATION_ENGLISH_MERCATOR,
/**
* 天地图影像墨卡托投影地图服务
*/
TIANDITU_IMAGE_MERCATOR,
/**
* 天地图影像墨卡托投影中文标注
*/
TIANDITU_IMAGE_ANNOTATION_CHINESE_MERCATOR,
/**
* 天地图影像墨卡托投影英文标注
*/
TIANDITU_IMAGE_ANNOTATION_ENGLISH_MERCATOR,
/**
* 天地图地形墨卡托投影地图服务
*/
TIANDITU_TERRAIN_MERCATOR,
/**
* 天地图地形墨卡托投影中文标注
*/
TIANDITU_TERRAIN_ANNOTATION_CHINESE_MERCATOR,
/**
* 天地图矢量国家2000坐标系地图服务
*/
TIANDITU_VECTOR_2000,
/**
* 天地图矢量国家2000坐标系中文标注
*/
TIANDITU_VECTOR_ANNOTATION_CHINESE_2000,
/**
* 天地图矢量国家2000坐标系英文标注
*/
TIANDITU_VECTOR_ANNOTATION_ENGLISH_2000,
/**
* 天地图影像国家2000坐标系地图服务
*/
TIANDITU_IMAGE_2000,
/**
* 天地图影像国家2000坐标系中文标注
*/
TIANDITU_IMAGE_ANNOTATION_CHINESE_2000,
/**
* 天地图影像国家2000坐标系英文标注
*/
TIANDITU_IMAGE_ANNOTATION_ENGLISH_2000,
/**
* 天地图地形国家2000坐标系地图服务
*/
TIANDITU_TERRAIN_2000,
/**
* 天地图地形国家2000坐标系中文标注
*/
TIANDITU_TERRAIN_ANNOTATION_CHINESE_2000
}
}5、从TianDiTuMethodsClass类导入的包可以看到天地图用到了esri提供的arcgis包，所以第一步必须先配置arcgis。调用也非常简单，将矢量图层和标注添加到底图：
WebTiledLayer webTiledLayer = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_VECTOR_2000);
Basemap tdtBasemap = new Basemap(webTiledLayer);
WebTiledLayer webTiledLayer1 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_VECTOR_ANNOTATION_CHINESE_2000);
tdtBasemap.getBaseLayers().add(webTiledLayer1);
ArcGISMap map = new ArcGISMap(tdtBasemap);
mMapView.setMap(map);
mMapView.setViewpoint(new Viewpoint(34.77669, 113.67922, 10000));将影像图层和标注添加到底图：
WebTiledLayer webTiledLayer2 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_IMAGE_2000);
Basemap tdtBasemap2 = new Basemap(webTiledLayer2);
WebTiledLayer webTiledLayer22 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_IMAGE_ANNOTATION_CHINESE_2000);
tdtBasemap2.getBaseLayers().add(webTiledLayer22);
ArcGISMap map = new ArcGISMap(tdtBasemap2);
mMapView.setMap(map);
mMapView.setViewpoint(new Viewpoint(34.77669, 113.67922, 10000));效果:
完整代码：
package com.example.androidgistest;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import com.esri.arcgisruntime.layers.WebTiledLayer;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.Viewpoint;
import com.esri.arcgisruntime.mapping.view.MapView;
public class MainActivity extends AppCompatActivity {
MapView mMapView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapView = findViewById(R.id.mapview);
mMapView.setAttributionTextVisible(false);
// WebTiledLayer webTiledLayer = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_VECTOR_2000);
// Basemap tdtBasemap = new Basemap(webTiledLayer);
// WebTiledLayer webTiledLayer1 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_VECTOR_ANNOTATION_CHINESE_2000);
// tdtBasemap.getBaseLayers().add(webTiledLayer1);
WebTiledLayer webTiledLayer2 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_IMAGE_2000);
Basemap tdtBasemap2 = new Basemap(webTiledLayer2);
WebTiledLayer webTiledLayer22 = TianDiTuMethodsClass.CreateTianDiTuTiledLayer(TianDiTuMethodsClass.LayerType.TIANDITU_IMAGE_ANNOTATION_CHINESE_2000);
tdtBasemap2.getBaseLayers().add(webTiledLayer22);
ArcGISMap map = new ArcGISMap(tdtBasemap2);
mMapView.setMap(map);
mMapView.setViewpoint(new Viewpoint(34.77669, 113.67922, 10000));
}
@Override
protected void onPause() {
mMapView.pause();
super.onPause();
}
@Override
protected void onResume() {
super.onResume();
mMapView.resume();
}
@Override
protected void onDestroy() {
mMapView.dispose();
super.onDestroy();
}
}6、下一节讲解 arcgis for android 入门与提高（六）定位
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