1. L

    Android Question Attempt to read from field ... on a null object reference

    Hello, A user reported to me this error that I can't replicate. This error occours only to this customer, nobody else has this problem: (NullPointerException) java.lang.NullPointerException: Attempt to read from field 'com.brand.appname.main com.brand.appname.rooms._main' on a null object...
  2. janderkan

    B4J Question ABMaterial - Global variables

    Hi all When I log in, my database module returns a map with user data. I think of ABMaterial as a B4J app and put these data into a Process_Globals variable. My friend think it is neccessary to put the user data in a session cookie. Who is right ? Also I would like to initialize a Mqtt...