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openlayers map

Postby sandesh » Fri Mar 07, 2008 11:22 am

i m getting an application error ,unable to instantiate activity ,java.lang.ClassCastException
i m trying to get openlayer map in android

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Using java Syntax Highlighting
  1. package org.android.openlayer;
  2.  
  3.  
  4.  
  5.  
  6.  
  7. import com.eg.gwt.openLayers.client.Bounds;
  8.  
  9. import com.eg.gwt.openLayers.client.Icon;
  10.  
  11. import com.eg.gwt.openLayers.client.JObjectArray;
  12.  
  13. import com.eg.gwt.openLayers.client.JSObject;
  14.  
  15. import com.eg.gwt.openLayers.client.LonLat;
  16.  
  17. import com.eg.gwt.openLayers.client.Map;
  18.  
  19. import com.eg.gwt.openLayers.client.MapOptions;
  20.  
  21. import com.eg.gwt.openLayers.client.MapWidget;
  22.  
  23. import com.eg.gwt.openLayers.client.Marker;
  24.  
  25. import com.eg.gwt.openLayers.client.Pixel;
  26.  
  27. import com.eg.gwt.openLayers.client.Size;
  28.  
  29. import com.eg.gwt.openLayers.client.control.LayerSwitcher;
  30.  
  31. import com.eg.gwt.openLayers.client.control.MousePosition;
  32.  
  33. import com.eg.gwt.openLayers.client.control.MouseToolbar;
  34.  
  35. import com.eg.gwt.openLayers.client.control.PanZoomBar;
  36.  
  37. import com.eg.gwt.openLayers.client.control.Scale;
  38.  
  39. import com.eg.gwt.openLayers.client.event.EventHandler;
  40.  
  41. import com.eg.gwt.openLayers.client.layer.Layer;
  42.  
  43. import com.eg.gwt.openLayers.client.layer.Markers;
  44.  
  45. import com.eg.gwt.openLayers.client.layer.WMS;
  46.  
  47. import com.eg.gwt.openLayers.client.layer.WMSParams;
  48.  
  49. import com.eg.gwt.openLayers.client.popup.AnchoredBubble;
  50.  
  51. import com.eg.gwt.openLayers.client.popup.Popup;
  52.  
  53. import com.google.gwt.core.client.EntryPoint;
  54.  
  55. import com.google.gwt.user.client.ui.DockPanel;
  56.  
  57. import com.google.gwt.user.client.ui.RootPanel;
  58.  
  59.  
  60.  
  61. public class hello implements EntryPoint {
  62.  
  63.  
  64.  
  65.         private MapWidget mapWidget;
  66.  
  67.         private Map map;
  68.  
  69.         private WMS wmsLayer;
  70.  
  71.         private Markers markers;
  72.  
  73.         private Popup popup;
  74.  
  75.         public void onModuleLoad() {
  76.  
  77.                 // let's create map options
  78.  
  79.                 MapOptions mapOptions = new MapOptions();
  80.  
  81.                 mapOptions.setControls(new JObjectArray(new JSObject[] {}));
  82.  
  83.                 mapOptions.setNumZoomLevels(16);
  84.  
  85.                 mapOptions.setProjection("EPSG:4326");
  86.  
  87.  
  88.  
  89.                 // let's create map widget and map objects
  90.  
  91.                 mapWidget = new MapWidget("350px", "350px", mapOptions);
  92.  
  93.                 map = mapWidget.getMap();
  94.  
  95.                 markers = new Markers("marker layer");
  96.  
  97. //               let's create WMS map layer
  98.  
  99.                 WMSParams wmsParams = new WMSParams();
  100.  
  101.                 wmsParams.setFormat("image/png");
  102.  
  103.                 wmsParams.setLayers("tiger-ny");
  104.  
  105.                 wmsParams.setStyles("");
  106.  
  107.                 wmsParams.setMaxExtent(new Bounds(-74.047185, 40.679648, -73.907005, 40.882078));
  108.  
  109.  
  110.  
  111.                 wmsLayer = new WMS("WMS Layer", "http://localhost:8080/geoserver/wms", wmsParams);
  112.  
  113.  
  114.  
  115.                 // let's add layers and controls to map
  116.  
  117.                 map.addLayers(new Layer[] {wmsLayer, markers});
  118.  
  119.  
  120.  
  121.                 map.addControl(new PanZoomBar(RootPanel.get("nav").getElement()));
  122.  
  123.                 map.addControl(new MousePosition(RootPanel.get("position").getElement()));
  124.  
  125.                 map.addControl(new Scale(RootPanel.get("scale").getElement()));
  126.  
  127.                 map.addControl(new MouseToolbar());
  128.  
  129.                 map.addControl(new LayerSwitcher());
  130.  
  131. //               let's center the map to somewhere and set zoom level to 13
  132.  
  133.                 LonLat center = new LonLat(-73.99, 40.73);
  134.  
  135.                 map.setCenter(center, 13);
  136.  
  137.  
  138.  
  139.                 // add marker
  140.  
  141.                 Size size = new Size(10,17);
  142.  
  143.                 Pixel offset = new Pixel(-5, -17);
  144.  
  145.                 Icon icon = new Icon("img/marker.png", size, offset);
  146.  
  147.                 Marker marker = new Marker(center, icon);
  148.  
  149.                 markers.addMarker(marker);
  150.  
  151. //               register mouse over event
  152.  
  153.                 marker.getEvents().register("mouseover", marker, new EventHandler() {
  154.  
  155.                         public void onHandle(JSObject source, JSObject[] param) {
  156.  
  157.                                 Marker marker = Marker.narrowToMarker(source);
  158.  
  159.                                 if (popup != null) {
  160.  
  161.                                         map.removePopup(popup);
  162.  
  163.                                 }
  164.  
  165.  
  166.  
  167.                                 popup = new AnchoredBubble("marker-info",
  168.  
  169.                                                 marker.getLonLat(),
  170.  
  171.                                                 new Size(120,80),
  172.  
  173.                                                 "<p>You moved near " + marker.getLonLat().lon() + " : " + marker.getLonLat().lat() + "</p>" ,
  174.  
  175.                                                 new Icon("", new Size(0,0), new Pixel(0,0)),
  176.  
  177.                                                 true);
  178.  
  179.                         map.addPopup(popup);
  180.  
  181.  
  182.  
  183.                         }
  184.  
  185.                 });
  186.  
  187.  
  188.  
  189.                 // register mouse out event
  190.  
  191.                 marker.getEvents().register("mouseout", marker, new EventHandler() {
  192.  
  193.                         public void onHandle(JSObject source, JSObject[] param) {
  194.  
  195.                 //      Marker marker = Marker.narrowToMarker(source);
  196.  
  197.                                 if (popup != null) {
  198.  
  199.                                         map.removePopup(popup);
  200.  
  201.                                 }
  202.  
  203.                         }
  204.  
  205.                 });
  206.  
  207. //               eventually add the map widget to div:map
  208.  
  209.                 DockPanel dockPanel = new DockPanel();
  210.  
  211.                 dockPanel.add(mapWidget, DockPanel.CENTER);
  212.  
  213.                 dockPanel.setBorderWidth(1);
  214.  
  215.                 RootPanel.get("map").add(dockPanel);
  216.  
  217.         }
  218.  
  219. }
Parsed in 0.049 seconds, using GeSHi 1.0.8.4
sandesh
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Postby plusminus » Fri Mar 07, 2008 4:17 pm

Hello sandesh,

debugging even works in Android!
So, where is the exception thrown :?:

Localhost won't work ! From the View of the Emulator, itself is "localhost".
Syntax: [ Download ] [ Hide ]
Using java Syntax Highlighting
  1. wmsLayer = new WMS("WMS Layer", "http://localhost:8080/geoserver/wms", wmsParams);
Parsed in 0.030 seconds, using GeSHi 1.0.8.4


Regards,
plusminus
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