Latest Contributions by chenyangyang

as follows: mSceneView.setAtmosphereEffect( AtmosphereEffect.REALISTIC ); When the map is initialized like this, only the labels are displayed. ArcGISScene arcGISScene = new ArcGISScene(); //Elevation ArcGISTiledElevationSource elevationSource = new ArcGISTiledElevationSource("http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"); arcGISScene.getBaseSurface().getElevationSources().add(elevationSource); //BasemapLayer arcGISScene.setBasemap( Basemap.createImageryWithLabels() ); mSceneView.setScene(arcGISScene); Solution: mSceneView.setAtmosphereEffect( AtmosphereEffect.HORIZON_ONLY ); ... View more

Reading Mbtiles by overriding getURL, notice that the tile data is requested by callback onRequestRequired, but the callback is very slow and no longer requests data at high levels, why? SDK Version:100.3 Demo: public class MBTilesLayer extends ImageTiledLayer {     String mMbTilesFilename;     private SQLiteDatabase mapDb;     //构造一个离线MBTiles图层     public MBTilesLayer( String _mbTilesPath ){         super( MbtilesUtil.newInstance().getMBTileTileinfo( _mbTilesPath ),          MbtilesUtil.newInstance().getMBTileEnvelope( _mbTilesPath ) );            mMbTilesFilename = _mbTilesPath;                 try {             mapDb = SQLiteDatabase.openDatabase( mMbTilesFilename, null, SQLiteDatabase.OPEN_READONLY );             //setBufferSize(BufferSize.NONE);         } catch (SQLException ex) {             Log.e(this.getName(), ex.getMessage());             throw (ex);         }     }     @Override     protected byte[] getTile(TileKey tileKey) {         // need to flip origin         int nRows = (1 << tileKey.getLevel()); // Num rows = 2^level         int tmsRow = nRows - 1 - tileKey.getRow();         String sql = "SELECT tile_data FROM tiles WHERE zoom_level = " + Integer.toString( tileKey.getLevel() )                 + " AND tile_column = " + Integer.toString( tileKey.getColumn() ) + " AND tile_row = " + Integer.toString( tmsRow );         System.out.println( "Sql " + sql );         Cursor imageCur = mapDb.rawQuery(sql,null);         if (imageCur.moveToFirst()) {             return imageCur.getBlob(0);         }         return null; // Alternatively we might return a "no data" tile     } } ... View more

SDK Version 100.3 Android 8.1.0,level 27 This problem has been bothering us. ... View more