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onevoisses's avatar
onevoisses
Visitor
13 years ago

Array operation attempted on variable not DIM'd

I am working on updating my channel,here is a problem ,I manage to narrow down my problem and can reproduce it here.
I get this error as I tried to move from the spring board to the video screen

Array operation attempted on variable not DIM'd. (runtime error &he7) in ...kg:/source/AppSpringboard.brs(39)

039: PlayVideo(videos[msg.GetIndex()])
Backtrace:
Function showspringboardscreen(video As <uninitialized>) As Integer
file/line: /tmp/plugin/MBBAAAxy1j0...kg:/source/AppSpringboard.brs(39)
Function showposterscreen(videos As <uninitialized>) As Integer
file/line: /tmp/plugin/MBBAAAxy1j08/pkg:/source/AppMain.brs(82)
Function loadjsonfile() As
file/line: /tmp/plugin/MBBAAAxy1j08/pkg:/source/AppMain.brs(51)
Function main() As
file/line: /tmp/plugin/MBBAAAxy1j08/pkg:/source/AppMain.brs(15)

the springboard seems ok as content data is there
here is the function for the video player

Function PlayVideo(video as object) as integer


If I move from the posterscreen to the videoplayer the each video will play based on the array like here

if type(msg) = "roPosterScreenEvent"
            if (msg.isListItemSelected())
               'PlayVideo(videos[msg.GetIndex()])  ''This work with this'"2"
                ShowSpringboardScreen(videos[msg.GetIndex()])
                else if (msg.isScreenClosed())

any suggestions,I might have been away too long,so I am losing the "mojo"
Roku Developer Program

5 Replies

  • onevoisses's avatar
    onevoisses
    Visitor
    13 years ago
    Feedback
    Thanks everyone
    kbenson clarified the "m" for me in this post
    http://forums.roku.com/viewtopic.php?f=34&t=31874
    and jbrave-Joel in this post
    http://forums.roku.com/viewtopic.php?f=34&t=39414 so I modify my loadfeed() to

    Function LoadJSONFile() as void
        jsonAsString = ReadAsciiFile("pkg:/json/sample1.json")
        feedinfo = ParseJSON(jsonAsString)
         ShowPosterScreen(feedinfo.Videos)
    End Function


    RokuMarkn pointed out that
    When you printed "videos", the output was "<uninitialized>". That's your problem. Perhaps you created the videos variable in a different scope than where you're using it.


    I found out I was calling videos to play on the videoscreen when I only needed one video so I modify 

    PlayVideo(videos[msg.GetIndex()])
    to match my 
    Function PlayVideo(video as object) as integer


    and so thanks Joel and endless for this beautiful tip on"
    Need Help Understanding CreateObject()"

    http://forums.roku.com/viewtopic.php?p=255658&sid=cbe3599496ebe07c5760788be91faeac

    and finally Joel and whomever said "print" is your friend might I also add "STOP"

    Here are the results of the print

    Using Json

    ------ Running ------
    msg: idx:  8
    roArray
     8
     20
    Image: http://xxx.xxx.xxx.xxx/someimage.png
    Url: http://xxx.xxx.xxx.xxx:1935/xxx/xxx/playlist.m3u8

    Title: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 

    SpringBoardButton Pressed:  5 index:  1
    roAssociativeArray
     1
    showVideoScreen | msg = Stream started. | index =  0
    showVideoScreen | msg = HLS segment info | index =  0
    showVideoScreen | msg = HLS segment info | index =  7000
    showVideoScreen | msg = HLS segment info | index =  14000
    showVideoScreen | msg = Playback paused. | index =  0


    Using XML Parsing
    Using xml

    ------ Running ------
    msg: idx:  7
    roXMLList
     7
     20
    <Component: roXMLElement>
    SpringBoardButton Pressed:  5 index:  1
    roXMLElement
     1
    showVideoScreen | msg = Stream started. | index =  0
    showVideoScreen | msg = HLS segment info | index =  0
    showVideoScreen | msg = HLS segment info | index =  10000
    showVideoScreen | msg = Playback paused. | index =  0


    I do value this help
  • RokuJoel's avatar
    RokuJoel
    Binge Watcher
    13 years ago
    Try adding

    print type(videos)
    print msg.getindex()
    print videos.count()
    print videos[msg.getindex()]

    immediately before PlayVideo(videos[msg.GetIndex()])

    as a troubleshooting step. Maybe the index is higher than the number of videos in the array?

    - Joel
  • RokuMarkn's avatar
    RokuMarkn
    Visitor
    13 years ago
    You didn't show where you initialized the videos variable, but apparently it is not an array.

    --Mark
  • onevoisses's avatar
    onevoisses
    Visitor
    13 years ago
    here is the array
    Function ShowPosterScreen(videos as object) as integer
     posterScreen = CreateObject("roPosterScreen")
        port = CreateObject("roMessagePort")
        posterScreen.SetMessagePort(port)

    contentList = CreateObject("roArray",25, true)
        for each video in videos
            poster = CreateObject("roAssociativeArray")
             poster.ShortDescriptionLine1 = video.Title
                poster.SDPosterURL = video.Image
                poster.HDPosterURL = video.Image
                contentList.push( poster )
        end for


        posterScreen.SetContentList( contentList )


    here is the json

    Function LoadJSONFile() as void
        jsonAsString = ReadAsciiFile("pkg:/json/sample1.json")
        m.json = ParseJSON(jsonAsString)

        ShowPosterScreen(m.json.Videos)
    End Function


    this is what I get when i used the print statement

    ------ Running ------
    SpringBoardButton Pressed: 5 index: 1
    <uninitialized>
    1
    BrightScript Micro Debugger.
    Enter any BrightScript statement, debug commands, or HELP.
    '
    '
    Array operation attempted on variable not DIM'd. (runtime error &he7) in ...kg:/source/AppSpringboard.brs(40)

    040: print videos[msg.getindex()]
    Backtrace:

    I had 20 in the array but 21 videos so I move it to 25
    also print videos.count() gives the following error

    'Dot' Operator attempted with invalid BrightScript Component or interface reference. (runtime error &hec) in ...kg:/source/AppSpringboard.brs(40)

    040: print videos.count();
    do you think my problem is 
     ShowPosterScreen(m.json.Videos)
  • RokuMarkn's avatar
    RokuMarkn
    Visitor
    13 years ago
    When you printed "videos", the output was "<uninitialized>". That's your problem. Perhaps you created the videos variable in a different scope than where you're using it.

    --Mark