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groman00's avatar
groman00
Visitor
10 years ago

Observer callback functions

I'm seeing this on the 7.1 release notes: Parameters can now be passed to observer callback functions (ifSGNodeField). https://sdkdocs.roku.com/display/sdkdoc ... 04/05/2016 There's no mention of...
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  • NicholasStokes's avatar
    NicholasStokes
    Binge Watcher
    3 years ago


    I am running this file in task.xml

     

    <?xml version=“1.0” encoding=“utf-8" ?>
    <!-- Copyright 2016 Roku Corp. All Rights Reserved. -->
    <component name=“ContentReader” extends=“Task”>
    <script type=“text/brightscript”>
    <![CDATA[
    sub init()
    m.top.functionName = “getAPIResponse”
    end sub

    sub getAPIResponse()
    port = CreateObject(“roMessagePort”)
    request = CreateObject(“roUrlTransfer”)
    request.setRequest(“GET”)
    request.setURL(m.top.contenturi)
    jsonString = request.GetToString()
    jsonParsed = ParseJson(jsonString)
    m.top.content = jsonParsed
    end sub
    ]]>
    </script>
    </component>

     

    And Used this below function in main.brs file

     

    sub Main()
    print “in showChannelSGScreen”
    m.readXMLContentTask = createObject(“roSGNode”, “ContentReader”)
    m.readXMLContentTask.observeField(“content”, “setcontent”)
    m.readXMLContentTask.contenturi = “http://www.sdktestinglab.com/Tutorial/content/xmlcontent.xml”
    m.readXMLContentTask.control = “RUN”
    readData = m.top.content
    print “readData”
    end sub

    but this function is not executed in main.brs file
    Can you please help me to execute this function from main.brs Or provide the sample examples

    • renojim's avatar
      renojim
      Community Streaming Expert
      3 years ago

      NicholasStokes, I can't help you run the task from Main(), but there isn't any need to run a task from Main().  Just put the code from task.xml right in Main().  You can use roUrlTransfer in Main().  Also, please use code tags when posting code.  It makes it much, much, much easier to read.  To find it, you have to expand the toolbar above the edit box for your post and it looks like </>.

      sub Main()
   print “in showChannelSGScreen”
   port = CreateObject(“roMessagePort”)
   request = CreateObject(“roUrlTransfer”)
   url = "http://www.sdktestinglab.com/Tutorial/content/xmlcontent.xml"
   request.setURL(url)
   jsonString = request.GetToString()
   jsonParsed = ParseJson(jsonString)
end sub