加载高德地图
说明一下，什么时候加载高德地图，什么时候加载天地图
使用原生定位或者使用arcgis提供的LocationDisplay的定位时，需要加载天地图，因为原生定位返回的坐标是wgs84的坐标，而高德地图是火星坐标系(gcj02)是经过偏移的，定位显示会有偏移
使用百度定位或者高德定位，定位返回坐标设置为gcj02时，直接加载高德地图，定位就不会有偏移
废话不多说，上才艺
准备
先自定义TianDiTuTiledLayerClass
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 TianDiTuTiledLayerClass {
//需要自己去申请,绑定包名和SHA1，我这个你们用不了
private static final String key = "11fc0ecfe024734754f0fb5952aa5c6f";
private static final List SubDomain =
Arrays.asList(new String[]{"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7"});
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 SpatialReference SRID_MERCATOR = SpatialReference.create(102100);
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_MERCATOR =
new Point(-20037508.3427892, 20037508.3427892, SRID_MERCATOR);
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 SpatialReference SRID_2000 = SpatialReference.create(4490);
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 Point ORIGIN_2000 = new Point(-180, 90, SRID_2000);
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 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(LayerType layerType) {
String type = "";
String tilematrixset = "";
WebTiledLayer webTiledLayer = null;
String mainUrl;
TileInfo mainTileInfo;
Envelope mainEnvelope;
try {
switch (layerType) {
case TIANDITU_VECTOR_MERCATOR:
type = "vec";
tilematrixset = "w";
break;
case TIANDITU_VECTOR_MERCATOR_LABLE:
type = "cva";
tilematrixset = "w";
break;
case TIANDITU_VECTOR_2000:
type = "vec";
tilematrixset = "c";
break;
case TIANDITU_VECTOR_2000_LABLE:
type = "cva";
tilematrixset = "c";
break;
case TIANDITU_IMAGE_MERCATOR:
type = "img";
tilematrixset = "w";
break;
case TIANDITU_IMAGE_MERCATOR_LABLE:
type = "cia";
tilematrixset = "w";
break;
case TIANDITU_IMAGE_2000:
type = "img";
tilematrixset = "c";
break;
case TIANDITU_IMAGE_2000_LABLE:
type = "cia";
tilematrixset = "c";
break;
case TIANDITU_TERRAIN_MERCATOR:
type = "ter";
tilematrixset = "w";
break;
case TIANDITU_TERRAIN_MERCATOR_LABLE:
type = "cta";
tilematrixset = "w";
break;
case TIANDITU_TERRAIN_2000:
type = "ter";
tilematrixset = "c";
break;
case TIANDITU_TERRAIN_2000_LABLE:
type = "cta";
tilematrixset = "c";
break;
}
mainUrl = "http://t0.tianditu.gov.cn/"
+ type + "_" + tilematrixset + "/wmts?" +
"service=wmts" +
"&request=gettile" +
"&version=1.0.0" +
"&layer=" + type +
"&format=tiles" +
"&STYLE=default" +
"&tilematrixset=" + tilematrixset +
"&tilecol={col}" +
"&tilerow={row}" +
"&tilematrix={level}" +
"&tk=" + key;
List mainLevelOfDetail = new ArrayList();
Point mainOrigin;
if (tilematrixset.equals("c")) {
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(type);
webTiledLayer.loadAsync();
} catch (Exception e) {
e.getCause();
}
return webTiledLayer;
}
public enum LayerType {
/**
* 天地图矢量墨卡托投影地图服务
*/
TIANDITU_VECTOR_MERCATOR,
TIANDITU_VECTOR_MERCATOR_LABLE,
/**
* 天地图矢量2000地图服务
*/
TIANDITU_VECTOR_2000,
TIANDITU_VECTOR_2000_LABLE,
/**
* 天地图影像墨卡托地图服务
*/
TIANDITU_IMAGE_MERCATOR,
TIANDITU_IMAGE_MERCATOR_LABLE,
/**
* 天地图影像2000地图服务
*/
TIANDITU_IMAGE_2000,
TIANDITU_IMAGE_2000_LABLE,
/**
* 天地图地形墨卡托地图服务
*/
TIANDITU_TERRAIN_MERCATOR,
TIANDITU_TERRAIN_MERCATOR_LABLE,
/**
* 天地图地形2000地图服务
*/
TIANDITU_TERRAIN_2000,
TIANDITU_TERRAIN_2000_LABLE,
}
}
地址拼接是看的天地图官网给的例子，天地图API传送门
天地图官方例子
注意
天地图现在要去官网申请一个key才能用
申请key
申请后替换上面类里的key
使用方法
使用的kotlin代码，应该能看懂吧
//去除水印
ArcGISRuntimeEnvironment.setLicense("runtimelite,1000,rud4449636536,none,NKMFA0PL4S0DRJE15166")
//去除logo
mapView.isAttributionTextVisible = false
//默认底图
val webTiledLayer =
TianDiTuTiledLayerClass.CreateTianDiTuTiledLayer(
TianDiTuTiledLayerClass.LayerType.TIANDITU_VECTOR_MERCATOR
)
//标注图层
val webTiledLayerLable =
TianDiTuTiledLayerClass.CreateTianDiTuTiledLayer(
TianDiTuTiledLayerClass.LayerType.TIANDITU_VECTOR_MERCATOR_LABLE
)
val basemap = Basemap()
basemap.baseLayers.add(webTiledLayer)
basemap.baseLayers.add(webTiledLayerLable)
val arcGISMap = ArcGISMap(basemap)
mapView.map = arcGISMap
至此就大功告成，需要添加三个权限,读写文件是运行时权限，别忘了
官方提供底图
官方提供底图
可自由扩展，添加LayerType的枚举类型和
public static WebTiledLayer CreateTianDiTuTiledLayer(LayerType layerType)
代码中的
对应官网的
代码中的
对应官网的