ArcGIS for android 访问天地图

package com.hvit.tianditu; import java.io.BufferedInputStream; import java.io.ByteArrayOutputStream; import java.net.HttpURLConnection; import java.net.URL; import java.util.concurrent.RejectedExecutionException; import android.util.Log; import com.esri.android.map.TiledServiceLayer; import com.esri.core.geometry.Envelope; import com.esri.core.geometry.Point; import com.esri.core.geometry.SpatialReference; import com.esri.core.io.UserCredentials; /** * @author 作者姓名: 于华 * @E-mail yuh945@gmail.com * @version 创建时间：2012-10-13 下午05:23:07 * 类说明 */ public class TianDiTuTiledMapServiceLayer extends TiledServiceLayer { private TianDiTuTiledMapServiceType _mapType; private TileInfo tiandituTileInfo; public TianDiTuTiledMapServiceLayer() { this(null, null,true); } public TianDiTuTiledMapServiceLayer(TianDiTuTiledMapServiceType mapType){ this(mapType, null,true); } public TianDiTuTiledMapServiceLayer(TianDiTuTiledMapServiceType mapType,UserCredentials usercredentials){ this(mapType, usercredentials, true); } public TianDiTuTiledMapServiceLayer(TianDiTuTiledMapServiceType mapType, UserCredentials usercredentials, boolean flag){ super(""); this._mapType=mapType; setCredentials(usercredentials); if(flag) try { getServiceExecutor().submit(new Runnable() { public final void run() { a.initLayer(); } final TianDiTuTiledMapServiceLayer a; { a = TianDiTuTiledMapServiceLayer.this; //super(); } }); return; } catch(RejectedExecutionException _ex) { } } public TianDiTuTiledMapServiceType getMapType(){ return this._mapType; } protected void initLayer(){ this.buildTileInfo(); this.setFullExtent(new Envelope(-180,-90,180,90)); this.setDefaultSpatialReference(SpatialReference.create(4490)); //CGCS2000 //this.setDefaultSpatialReference(SpatialReference.create(4326)); this.setInitialExtent(new Envelope(90.52,33.76,113.59,42.88)); super.initLayer(); } public void refresh() { try { getServiceExecutor().submit(new Runnable() { public final void run() { if(a.isInitialized()) try { a.b(); a.clearTiles(); return; } catch(Exception exception) { Log.e("ArcGIS", "Re-initialization of the layer failed.", exception); } } final TianDiTuTiledMapServiceLayer a; { a = TianDiTuTiledMapServiceLayer.this; //super(); } }); return; } catch(RejectedExecutionException _ex) { return; } } final void b() throws Exception { } @Override protected byte[] getTile(int level, int col, int row) throws Exception { /** * * */ byte[] result = null; try { ByteArrayOutputStream bos = new ByteArrayOutputStream(); URL sjwurl = new URL(this.getTianDiMapUrl(level, col, row)); HttpURLConnection httpUrl = null; BufferedInputStream bis = null; byte[] buf = new byte[1024]; httpUrl = (HttpURLConnection) sjwurl.openConnection(); httpUrl.connect(); bis = new BufferedInputStream(httpUrl.getInputStream()); while (true) { int bytes_read = bis.read(buf); if (bytes_read > 0) { bos.write(buf, 0, bytes_read); } else { break; } } ; bis.close(); httpUrl.disconnect(); result = bos.toByteArray(); } catch (Exception ex) { ex.printStackTrace(); } return result; } @Override public TileInfo getTileInfo(){ return this.tiandituTileInfo; } /** * * */ private String getTianDiMapUrl(int level, int col, int row){ String url=new TDTUrl(level,col,row,this._mapType).generatUrl(); return url; } private void buildTileInfo() { Point originalPoint=new Point(-180,90); // double[] scale={ // 295829355.45, // 147914677.73, // 73957338.86, // 36978669.43, // 18489334.72, // 9244667.36, // 4622333.68, // 2311166.84, // 1155583.42, // 577791.71, // 288895.85, // 144447.93, // 72223.96, // 36111.98, // 18055.99, // 9028, // 4514, // 2257 }; // double[] res={ // 0.70391441567318025, // 0.35195720784848739, // 0.1759786039123464, // 0.087989301956173202, // 0.043994650989983904, // 0.021997325494991952, // 0.010998662747495976, // 0.005499331373747988, // 0.002749665686873994, // 0.001374832843436997, // 0.00068741640982119352, // 0.00034370821680790179, // 0.00017185409650664589, // 8.5927048253322947e-005, // 4.2963524126661473e-005, // 2.1481773960635764e-005, // 1.0740886980317882e-005, // 5.3704434901589409e-006 }; // int levels=18; double[] res={ 1.40625, 0.703125, 0.3515625, 0.17578125, 0.087890625, 0.0439453125, 0.02197265625, 0.010986328125, 0.0054931640625, 0.00274658203125, 0.001373291015625, 0.0006866455078125, 0.00034332275390625, 0.000171661376953125, 8.58306884765629E-05, 4.29153442382814E-05, 2.14576721191407E-05, 1.07288360595703E-05, 5.36441802978515E-06, 2.68220901489258E-06, 1.34110450744629E-06 }; double[] scale={ 400000000, 295497598.5708346, 147748799.285417, 73874399.6427087, 36937199.8213544, 18468599.9106772, 9234299.95533859, 4617149.97766929, 2308574.98883465, 1154287.49441732, 577143.747208662, 288571.873604331, 144285.936802165, 72142.9684010827, 36071.4842005414, 18035.7421002707, 9017.87105013534, 4508.93552506767, 2254.467762533835, 1127.2338812669175, 563.616940 }; int levels=21; int dpi=96; int tileWidth=256; int tileHeight=256; this.tiandituTileInfo=new com.esri.android.map.TiledServiceLayer.TileInfo(originalPoint, scale, res, levels, dpi, tileWidth,tileHeight); this.setTileInfo(this.tiandituTileInfo); } }