Can't register an Android device on AEM Screens | Community
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anuj_khanna_77
anuj_khanna_77
Level 2
February 15, 2017
Solved

Can't register an Android device on AEM Screens

  • February 15, 2017
  • 13 replies
  • 6511 views

Hi,

I am trying to setup and register an Android device with AEM screens but can't get it done. I am using OOTB geometrixx screens project setup and have my Tablet running Android. I have pointed AEM player to my AEM instance running AEM screens. I can see my device listed under pending devices, i click Validate button and goto metadata step. Here i provide a name "My Test Name" in Title filed and click on Register, i get an error and device fails to register. On the UI, i see an error "ParseError: Unexpected end of Input JSON". I check the error in developer console, there is a request to content/screens/svc/registration resource but the response is an empty JSON. I then checked AEM logs and can see the following exception

 

15.02.2017 05:57:57.650 *ERROR* [202.166.132.190 [1487167077627] POST /content/screens/svc/registration HTTP/1.1] com.adobe.cq.screens.device.registration.impl.RegistrationServlet Error during device registration javax.jcr.nodetype.ConstraintViolationException: Password violates password constraint (^(?=.*\d).{7,9}$). at org.apache.jackrabbit.oak.spi.security.user.action.PasswordValidationAction.validatePassword(PasswordValidationAction.java:105) at org.apache.jackrabbit.oak.spi.security.user.action.PasswordValidationAction.onPasswordChange(PasswordValidationAction.java:76) at org.apache.jackrabbit.oak.security.user.UserManagerImpl.onPasswordChange(UserManagerImpl.java:312) at org.apache.jackrabbit.oak.security.user.UserImpl.changePassword(UserImpl.java:111) at org.apache.jackrabbit.oak.jcr.delegate.UserDelegator$5.performVoid(UserDelegator.java:114) at org.apache.jackrabbit.oak.jcr.delegate.SessionDelegate.performVoid(SessionDelegate.java:274) at org.apache.jackrabbit.oak.jcr.delegate.UserDelegator.changePassword(UserDelegator.java:111) at com.adobe.cq.screens.device.impl.DeviceService.setPassword(DeviceService.java:312) at com.adobe.cq.screens.device.impl.DeviceManagerImpl.updatePassword(DeviceManagerImpl.java:66) at com.adobe.cq.screens.device.registration.impl.RegistrationServlet.doPost(RegistrationServlet.java:118) at org.apache.sling.api.servlets.SlingAllMethodsServlet.mayService(SlingAllMethodsServlet.java:149) at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:345) at org.apache.sling.api.servlets.SlingSafeMethodsServlet.service(SlingSafeMethodsServlet.java:376)

 

Can somebody let me know what is going on here and what password is being referred here.

Thanks

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    Best answer by -Joe-

    If online, check your X-Frame-Options headers since the player makes use of an iframe to pull the content from the server.

    If offline, make sure you have updated the cache of the channel (needs to be done at least once) and also make sure that there is no network issue preventing you from downloading the content sync zip package.

    13 replies

    smacdonald2008
    smacdonald2008
    Level 10
    February 15, 2017

    Have you followed this doc step by step? 

    https://docs.adobe.com/docs/en/aem/6-2/deploy/screens.html#AEM Screens Player for Android

    anuj_khanna_77
    anuj_khanna_77Author
    Level 2
    February 15, 2017
    Yes I did. That is why I am surprised why this issue is not listed anywhere.
    anuj_khanna_77
    anuj_khanna_77Author
    Level 2
    February 17, 2017

    Hi,

    Any one from product team here. Can you help?

    kautuk_sahni
    Community Manager
    kautuk_sahniCommunity Manager
    Community Manager
    February 21, 2017

    The reply from the experts are:-

        Most likely your instance has password restrictions configured ( During the registration process, a unique user and password combination is generated for the device so it can authenticate against the server. That password generation uses algorithm that might not be compatible with password constraints set on the server.). This is currently incompatible with the screens device registration.

        You need to disable them in order to be able to register screens devices.

        http://localhost:4502/system/console/configMgr/org.apache.jackrabbit.oak.spi.security.user.action.DefaultAuthorizableActionProvider

    I hope this would help you.

    ~kautuk

    Kautuk Sahni
      anuj_khanna_77
      anuj_khanna_77Author
      Level 2
      February 21, 2017

      Yes, that helps. Infact i moved both player and AEM instance on the same network and tried. I can now see that device is assigned to the display. I was able to successfully register the device. I can also see heartbeat, preview etc on Device Control manager, however the content is not displaying on the device. Inside the device I can see that it is pinging Ok and Device ID, user, password etc are stored. Uptime is also being displayed, however content is not appearing. What else could be wrong? 

      -
      Adobe Employee
      -Joe-Adobe Employee
      Adobe Employee
      February 22, 2017

      Are you accessing the channels using online or offline configuration?

      -
      Adobe Employee
      -Joe-Adobe EmployeeAccepted solution
      Adobe Employee
      February 22, 2017

      If online, check your X-Frame-Options headers since the player makes use of an iframe to pull the content from the server.

      If offline, make sure you have updated the cache of the channel (needs to be done at least once) and also make sure that there is no network issue preventing you from downloading the content sync zip package.

      H
      hariprasadm4102
      May 7, 2017

      Is this issue resolved ? Even I have same issue. I am using AEM screens player on my android mobile and it connects to my AEM server. Heartbeat, preview everything works fine. I have Device ID, Uptime and Ping OK also displayed. However I still see blank screen. In channel option of my AEM screen player I don't see anything listed. Please help. 

      T
      tusharma
      October 10, 2017

      I am also facing the exact same issue - Seeing the blank screen on Android screen. Ping is OK and in the Display Dashboard, the stats are fine. but the images in the sequence channel are not visible.  I tried different resolutions as well in the display config, but not working !

      H
      hariprasadm4102
      October 10, 2017

      Issue got resolved when I switched from AEM 6.2 to AEM 6.3 instance. Try using AEM 6.3 for AEM screens application. Hope this helps.

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