I found the problem. But I don't really understand why?
map.addMapClickHandler(new MapClickHandler() {
public void onClick(MapClickEvent e) {
MapWidget sender = e.getSender();
Overlay overlay = e.getOverlay();
LatLng point = e.getLatLng();
===> HERE IS THE PROBLEM <===
newMarker = new Marker(point);
if (overlay != null && overlay instanceof Marker) {
sender.removeOverlay(overlay);
} else {
sender.addOverlay(newMarker);
info.open(newMarker, infoWindowContent);
}
}
});
By removing newMarker = new Marker(point); and inserting it here:
map.addMapClickHandler(new MapClickHandler() {
public void onClick(MapClickEvent e) {
MapWidget sender = e.getSender();
Overlay overlay = e.getOverlay();
LatLng point = e.getLatLng();
if (overlay != null && overlay instanceof Marker) {
sender.removeOverlay(overlay);
} else {
===> HERE IS THE PROBLEM SOLVED <===
newMarker = new Marker(point);
sender.addOverlay(newMarker);
info.open(newMarker, infoWindowContent);
}
}
});
The exception isn't thrown and clicking on the marker works. Why does
javascript throw an exception?
On Dec 17, 3:57 pm, pfdevil <[email protected]> wrote:
> Hello
>
> I have an issue with an marker that does not want to close when
> clicked. Basically adding a marker is fine, but when I click on the
> marker it is supposed to close but it doesn't. I copied the code from
> this tutorial.
>
> http://gwt.google.com/samples/HelloMaps-1.0.1/HelloMaps.html#Click%20...
>
> Here is my code:
>
> public class SimpleMaps implements EntryPoint{
> private InfoWindow info = null;
> private Marker newMarker = null;
> InfoWindowContent infoWindowContent = null;
>
> /**
> * This is the entry point method.
> */
> public void onModuleLoad() {
> LatLng cawkrCity = LatLng.newInstance(39.509, -98.434);
> VerticalPanel verticalPanel = new VerticalPanel();
>
> verticalPanel.addStyleName("verticalPanel");
>
> MapWidget map = new MapWidget(cawkrCity, 4);
>
> HTML htmlWidget = new HTML("<b> Write a message </b>");
>
> verticalPanel.add(htmlWidget);
>
> info = map.getInfoWindow();
>
> infoWindowContent = new InfoWindowContent(verticalPanel);
>
> map.setUIToDefault();
>
> map.addStyleName("mapContainer");
>
> map.setSize("500px", "300px");
>
> # THIS IS THE CLICKHANDLER FOR THE MARKER
>
> map.addMapClickHandler(new MapClickHandler() {
> public void onClick(MapClickEvent e) {
> MapWidget sender = e.getSender();
> Overlay overlay = e.getOverlay();
> LatLng point = e.getLatLng();
>
> newMarker = new Marker(point);
>
> if (overlay != null && overlay instanceof Marker) {
> sender.removeOverlay(overlay);
>
> } else {
> sender.addOverlay(newMarker);
> info.open(newMarker, infoWindowContent);
>
> }
> }
> });
>
> RootPanel.get("mapContainer").add(map);
>
> }
>
> I also receive an error when testing this application:
>
> 14:37:18.834 [ERROR] [simplemaps] Uncaught exception escaped
> com.google.gwt.core.client.JavaScriptException: (TypeError): a is null
> fileName:http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/maps2.api/main.js
> lineNumber: 1246
> stack: (null)@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:1246
> ik(null)@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/maps2.api/
> main.js:1237
> (null)@http://localhost:8888:85
> @:0
> ([object GWTJavaObject],2555922,[object GWTJavaObject],null)@http://
> localhost:8888/simplemaps/hosted.html?simplemaps:56
> ([object Object],(void 0),[object Object])@http://localhost:8888:160
> ([object Array])@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:297
> ([object Object],1)@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:274
> t([object Array],(function (d) {if (lh) {d.bt(c);} else {try {d.bt
> (c);} catch (f) {}}}))@http://maps.gstatic.com/intl/en_ALL/mapfiles/
> 193c/maps2.api/main.js:81
> A([object Object],"click",[object Object],(void 0),[object Object])
> @http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/maps2.api/main.js:
> 274
> ([object Object])@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:770
> ([object Object])@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:6
> ([object Array])@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:297
> ([object Object],0)@http://maps.gstatic.com/intl/en_ALL/mapfiles/193c/
> maps2.api/main.js:274
> t([object Array],(function (d) {if (lh) {d.bt(c);} else {try {d.bt
> (c);} catch (f) {}}}))@http://maps.gstatic.com/intl/en_ALL/mapfiles/
> 193c/maps2.api/main.js:81
> A([object Object],"click",[object Object])@http://maps.gstatic.com/
> intl/en_ALL/mapfiles/193c/maps2.api/main.js:274
> Em([object MouseEvent])@http://maps.gstatic.com/intl/en_ALL/mapfiles/
> 193c/maps2.api/main.js:1298
> at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript
> (BrowserChannelServer.java:195)
> at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke
> (ModuleSpaceOOPHM.java:120)
> at com.google.gwt.dev.shell.ModuleSpace.invokeNative
> (ModuleSpace.java:507)
> at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject
> (ModuleSpace.java:264)
> at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject
> (JavaScriptHost.java:91)
> at com.google.gwt.maps.client.impl.__MarkerImplImpl.construct
> (__MarkerImplImpl.java)
> at com.google.gwt.maps.client.overlay.Marker.<init>(Marker.java:
> 116)
> at simplemap.client.SimpleMaps$2.onClick(SimpleMaps.java:66)
> at com.google.gwt.maps.client.MapWidget$8.callback(MapWidget.java:
> 481)
> at com.google.gwt.maps.client.impl.EventImpl$OverlayLatLngCallback
> $1.execute(EventImpl.java:193)
> at
> com.google.gwt.maps.client.impl.EventImpl.invokeAndReportUncaughtExceptions
> (EventImpl.java:260)
> at
> com.google.gwt.maps.client.impl.EventImpl.invokeAndMaybeReportUncaughtExceptions
> (EventImpl.java:246)
> at com.google.gwt.maps.client.impl.EventImpl.access$0
> (EventImpl.java:241)
> at com.google.gwt.maps.client.impl.EventImpl
> $OverlayLatLngCallback.callbackWrapper(EventImpl.java:191)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke
> (NativeMethodAccessorImpl.java:57)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:616)
> at com.google.gwt.dev.shell.MethodAdaptor.invoke
> (MethodAdaptor.java:103)
> at com.google.gwt.dev.shell.MethodDispatch.invoke
> (MethodDispatch.java:71)
> at com.google.gwt.dev.shell.OophmSessionHandler.invoke
> (OophmSessionHandler.java:157)
> at com.google.gwt.dev.shell.BrowserChannel.reactToMessages
> (BrowserChannel.java:1668)
> at com.google.gwt.dev.shell.BrowserChannelServer.processConnection
> (BrowserChannelServer.java:401)
> at com.google.gwt.dev.shell.BrowserChannelServer.run
> (BrowserChannelServer.java:222)
> at java.lang.Thread.run(Thread.java:636)
>
> This could maybe be related. I'm sorry for posting all this code.
> Since it usually unnecessary. But i'm not sure what to do, or where
> this error/exception lies.
>
> Thank you
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