Web Dynpro Java: Mobile Device Recognition Problem

[Former Member]

Hi, all!

I' m building an WD App with different UIs for Mobile and Desktop usage and therefore try to get a com.sap.mobile.clientinfo.ClientInfo Object via:

ClientInfoFactory clientInfoFactory = ClientInfoFactory.newInstance();
		ClientInfo clientInfo = clientInfoFactory.newClientInfo();
		IWDProtocolAdapter protAdapter = WDProtocolAdapter.getProtocolAdapter();
		IWDRequest request = protAdapter.getRequestObject();
		clientInfo.load(request);

For this I added DC "com.sap.mobile.clientinfo" out of SAP_JTECHS as Used DC.

When starting the Application, I receive the following error:

java.lang.NoClassDefFoundError: com/sap/mobile/clientinfo/ClientInfoFactory
	at at.tmobile.proj.intern.vis4.start.StartCompInterface.getClientInfo(StartCompInterface.java:156)
	at at.tmobile.proj.intern.vis4.start.StartCompInterface.wdDoInit(StartCompInterface.java:112)
	at at.tmobile.proj.intern.vis4.start.wdp.InternalStartCompInterface.wdDoInit(InternalStartCompInterface.java:112)
	at com.sap.tc.webdynpro.progmodel.generation.DelegatingCustomController.doInit(DelegatingCustomController.java:73)
	at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215)
	at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)
	at com.sap.tc.webdynpro.progmodel.controller.Component.getCustomControllerInternal(Component.java:448)
	at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponentInternal(ComponentUsage.java:167)
	at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponent(ComponentUsage.java:116)
	at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createInstanceIfDemanded(ComponentUsage.java:728)
	at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.getImplementingInterfaceViewInfo(ComponentUsage.java:403)
	at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.getViewManagerFor(ClientComponent.java:304)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.createUninitializedView(ViewManager.java:619)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:685)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.bind(ViewManager.java:546)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:715)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.bind(ViewManager.java:546)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:715)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:570)
	at com.sap.tc.webdynpro.progmodel.view.ViewManager.init(ViewManager.java:155)
	at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.doOpen(WebDynproWindow.java:300)
	at com.sap.tc.webdynpro.clientserver.window.ApplicationWindow.open(ApplicationWindow.java:204)
	at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:364)
	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.initApplication(ApplicationSession.java:700)
	at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:269)
	at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:707)
	at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:661)
	at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:229)
	at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:152)
	at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
	at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:46)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
	at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
	at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
	at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
	at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
	at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
	at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
	at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
	at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)

Im a referencing the wrong DC in the wrong way? Any hints more than appreciated!

Regards,

Thoams

[Former Member · Accepted solution]

Thomas,

In your WD project right-click on project node, open "Properties", switch to "WebDynpro References" then select "Library References". Add here library <b>com.sap.mobile.clientinfo</b>

If you add it in wrong place before, then remove it. If you add run-time dependecy for used DC, then remove it (just left build-time dependency).

To find corresponding library/service in future, run Visual Administrator, find your service/library in Services/Libraries tree and copy the value of <b>Service Name</b> or <b>Library Name</b> respectively.

Valery Silaev

SaM Solutions

http://www.sam-solutions.net

[Former Member]

Hi Thomas,

I have a similar requirement wherein I would have two views one for Desktop and one for Mobile device.

Is there anything else you have done to find out from which device the user logged on from (i.e a Mobile or Desktop) as when I tried executing the code snippet you have mentioned I am getting NullPointerException for the request object.

Appreciate your help in this.

Regards,

Praveen.

[Former Member]

Hi Thomas,

I have a similar requirement wherein I would have two views one for Desktop and one for Mobile device.

Is there anything else you have done to find out from which device the user logged on from (i.e a Mobile or Desktop) as when I tried executing the code snippet you have mentioned I am getting NullPointerException for the request object.

Appreciate your help in this.

Regards,

Praveen.

[former_member185029]

hey Thomas,

I guess you need to include a jar file which provides you class ClientInfoFactory.

Please make sure it has been placed into lib folder incase you are deploying and testing locally.

Regards,

Ashutosh Moharir