tianditu.png
在开发gis服务时通常会使用天地图或谷歌地图作为基础底图，这里记录一下天地图的使用方法，谷歌地图使用方法类似。
升级arcgis for android 100.+后的使用有一些变化，但总体思路不变:
天地图类:
/**
* @Author zzx
* @Date 2019/2/22-8:46
* @Desc 天地图
*/
public class TMapLayer extends ImageTiledLayer {
// 枚举
public enum MapType {
T_VECTOR_2000, // 天地图矢量图
T_VECTOR_ANNOTATION_CHINESE_2000, // 天地图矢量图注记
T_IMAGE_2000, // 天地图影像图
T_IMAGE_ANNOTATION_CHINESE_2000, // 天地图影像图注记
}
private static TileInfo mTileInfo;
private MapType mMapType;
private TMapLayer(TMapLayer.MapType mapType, TileInfo tileInfo, Envelope fullExtent) {
super(tileInfo, fullExtent);
this.mMapType = mapType;
}
public static TMapLayer getTMap(TMapLayer.MapType mapType) {
TileInfo tileInfo = buildTileInfo();
return new TMapLayer(mapType, tileInfo, ENVELOPE_2000);
}
@Override
protected byte[] getTile(TileKey tileKey) {
// LogUtil.d(getMapUrl(tileKey));
byte[] iResult = null;
try {
URL iURL = null;
byte[] iBuffer = new byte[1024];
HttpURLConnection iHttpURLConnection = null;
BufferedInputStream iBufferedInputStream = null;
ByteArrayOutputStream iByteArrayOutputStream = null;
iURL = new URL(getMapUrl(tileKey));
iHttpURLConnection = (HttpURLConnection) iURL.openConnection();
iHttpURLConnection.connect();
iBufferedInputStream = new BufferedInputStream(iHttpURLConnection.getInputStream());
iByteArrayOutputStream = new ByteArrayOutputStream();
while (true) {
int iLength = iBufferedInputStream.read(iBuffer);
if (iLength > 0) {
iByteArrayOutputStream.write(iBuffer, 0, iLength);
} else {
break;
}
}
iBufferedInputStream.close();
iHttpURLConnection.disconnect();
iResult = iByteArrayOutputStream.toByteArray();
} catch (Exception ex) {
ex.printStackTrace();
}
return iResult;
}
private String getMapUrl(TileKey tileKey) {
String iResult;
Random iRandom;
int level = tileKey.getLevel();
int col = tileKey.getColumn();
int row = tileKey.getRow();
String mapUrl;
String layerName;
iResult = "http://t";
iRandom = new Random();
iResult = iResult + iRandom.nextInt(4);
baseUrl = iResult+".tianditu.gov.cn/";
switch (this.mMapType) {
case T_VECTOR_2000:
mapUrl = URL_VECTOR_2000;
layerName = LAYER_NAME_VECTOR;
break;
case T_VECTOR_ANNOTATION_CHINESE_2000:
mapUrl = URL_VECTOR_ANNOTATION_CHINESE_2000;
layerName = LAYER_NAME_VECTOR_ANNOTATION_CHINESE;
break;
case T_IMAGE_2000:
mapUrl = URL_IMAGE_2000;
layerName = LAYER_NAME_IMAGE;
break;
case T_IMAGE_ANNOTATION_CHINESE_2000:
mapUrl = URL_IMAGE_ANNOTATION_CHINESE_2000;
layerName = LAYER_NAME_IMAGE_ANNOTATION_CHINESE;
break;
default:
return null;
}
return mapUrl + "?service=wmts&request=gettile&version=1.0.0&layer="
+ layerName + "&format=tiles&STYLE=default&tilematrixset="
+ TILE_MATRIX_SET_2000 + "&tilecol=" + col
+ "&tilerow=" + row + "&tilematrix=" + (level + 1) + "&tk=" + tidituKey;
}
@Override
public TileInfo getTileInfo() {
LogUtil.i("getTileInfo");
return mTileInfo;
}
private static TileInfo buildTileInfo() {
List<LevelOfDetail> levelOfDetails = new ArrayList<>();
for (int i = 0; i < RESOLUTIONS_2000.length; i++) {
LevelOfDetail levelOfDetail = new LevelOfDetail(i, RESOLUTIONS_2000[i], SCALES[i]);
levelOfDetails.add(levelOfDetail);
}
mTileInfo = new TileInfo(DPI, TileInfo.ImageFormat.PNG, levelOfDetails, ORIGIN_2000, SRID_2000, tileHeight, tileWidth);
return mTileInfo;
}
/* 天地图配置 */
private static final int DPI = 96;
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_IMAGE = "img";
private static final String LAYER_NAME_IMAGE_ANNOTATION_CHINESE = "cia";
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 String baseUrl = "http://t0.tianditu.gov.cn";
// 矢量底图
private static final String URL_VECTOR_2000 = baseUrl + "/vec_c/wmts";
// 矢量地名
private static final String URL_VECTOR_ANNOTATION_CHINESE_2000 = baseUrl + "/cva_c/wmts";
// 影像图底图
private static final String URL_IMAGE_2000 = baseUrl + "/img_c/wmts";
// 影像图地名
private static final String URL_IMAGE_ANNOTATION_CHINESE_2000 = baseUrl + "/cia_c/wmts";
private static final String TILE_MATRIX_SET_2000 = "c";
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_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};
private static String tidituKey = "在天地图网站申请";
}
从2019.1.1开始使用天地图服务需要申请token:http://lbs.tianditu.gov.cn/
在代码中使用:
// 根据不同的类别创建不同的地图(这里只有矢量图和影像图地址)
TMapLayer t_vec = TMapLayer.getTMap(TMapLayer.MapType.T_VECTOR_2000);
arcGISMap.getBasemap().getBaseLayers().add(t_vec);
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