Roku Developer Program

[salman23]

Hi,
I have a channel containing two screens posterscreen and rovideoscreen.What i want to do is,when i click the poster item,i need to go to videoscreen.But what happens is that , the videoscreen just appear and suddenly disappears.And in debug output,it prints the message "screen closed" in iscreenclosed() function. but when i run the videoscreen alone ,it works properly.Can anyone help please.?

poster.brs

Function showPosterScreen() As Integer
    poster=CreateObject("roPosterScreen")
    port=CreateObject("roMessagePort")
    poster.SetMessagePort(port)
    poster.SetListStyle("arced-landscape")
    poster.SetContentList(showList = [
        {
            ShortDescriptionLine1:"Show #1",
            ShortDescriptionLine2:"Short Description for Show #1",
        }
        {
            ShortDescriptionLine1:"Show #2",
            ShortDescriptionLine2:"Short Description for Show #2",
        }
        {
            ShortDescriptionLine1:"Show #3",
            ShortDescriptionLine2:"Short Description for Show #3",
        }
    ])
    poster.Show()

    while true
        msg = wait(0,port)
        if type(msg) = "roPosterScreenEvent" then
            print "showPosterScreen | msg = "; msg.GetMessage() " | index = "; msg.GetIndex()
            if msg.isListFocused() then
                print "focusing"
            else if msg.isListItemSelected() then
                VideoPlayer()
            else if msg.isScreenClosed() then
                return -1
            end if
        end If
    end while
End Function

videoscreen.brs

Function VideoPlayer() As void
     port = CreateObject("roMessagePort")
    screen = CreateObject("roVideoScreen")
    screen.SetMessagePort(port)
    screen.SetPositionNotificationPeriod(3)
    metaData={
        Stream: { url: "http://video.ted.com/talks/podcast/JeffHan_2006_480.mp4" }
        StreamFormat: "mp4"
    }
    screen.SetContent(metaData)
    screen.Show()

    while true
        msg = wait(0, port)
        if type(msg) = "roVideoScreenEvent" then
            print "showHomeScreen | msg = "; msg.getMessage() " | index = "; msg.GetIndex()
            if msg.isStreamStarted()
            print "started playing"
            else if msg.isfullresult()
                print "Video Completed Playback Normally"
                'RegDelete(episode.ContentId)
                print "deleted bookmark for playback position"
            else if msg.isScreenClosed()
                print "Screen closed"
                exit while
            else if msg.isButtonPressed()
                print "Button pressed: "; msg.GetIndex(); " " msg.GetData()      
            end if
        else
            print "Unexpected message class: "; type(msg)
        end if
    end while
End Function

[renojim]

I'm not sure how you ever got to VideoPlayer(). This line isn't valid BrightScript (or at least not how you're intending for it to act; I believe it's doing a Boolean comparison and I get a runtime error of an uninitialized variable):

poster.SetContentList(showList = [
        {
            ShortDescriptionLine1:"Show #1",
            ShortDescriptionLine2:"Short Description for Show #1",
        }
        {
            ShortDescriptionLine1:"Show #2",
            ShortDescriptionLine2:"Short Description for Show #2",
        }
        {
            ShortDescriptionLine1:"Show #3",
            ShortDescriptionLine2:"Short Description for Show #3",
        }
    ])

Either get rid of the "showlist =" or split it out on its own line:

showList = [
        {
            ShortDescriptionLine1:"Show #1",
            ShortDescriptionLine2:"Short Description for Show #1",
        }
        {
            ShortDescriptionLine1:"Show #2",
            ShortDescriptionLine2:"Short Description for Show #2",
        }
        {
            ShortDescriptionLine1:"Show #3",
            ShortDescriptionLine2:"Short Description for Show #3",
        }
    ]
poster.SetContentList(showList)

-JT