Issue with gridscreen

Archived
1

I am having some trouble with getting the gridscreen to load content. The function get_playlist_videos() requires the playlist id to be passed as a string. I have tried to convert the integer to a string in the highlighted bold area. I have also tried adding a id.toStr() in the request. Any help is appreciated.

Function Main()
  InitTheme()
  this = {
        gridScreenPort: CreateObject("roMessagePort")
        gridScreen:     CreateObject("roGridScreen")
        row:            get_playlists_by_player_id()
        row_items:      get_playlists_row_by_player_id()
    } 
    this.gridScreen.SetMessagePort(this.gridScreenPort)
    this.gridScreen.setGridStyle("four-column-flat-landscape")
    this.gridscreen.setDisplayMode("photo-fit")

    rowTitles = CreateObject("roArray", 10, true)
      for i = 0 to this.row.count() -1
        rowTitles.push(this.row[i])
      end for

    row_items = CreateObject("roArray", 10, true)
       for k = 0 to this.row_items.count() -1
         row_items.push(this.row_items[k].title)
      end for

    this.gridScreen.SetupLists(rowTitles.Count())
    this.gridScreen.SetListNames(row_items)

    for j = 0 to this.row_items.count() -1
    list = CreateObject("roArray", 10, true)
      for i = 0 to get_playlist_videos(rowTitles[j].id).count() -1
  ----> Problem Area       list.Push(get_playlist_videos(rowTitles[i]))
      end for 
     this.gridScreen.SetContentList(j, list) 
     end for 
     this.gridScreen.Show() 

     while true
         msg = wait(0, this.port)
         if type(msg) = "roGridScreenEvent" then
             if msg.isScreenClosed() then
                 return -1
             elseif msg.isListItemFocused()
                 print "Focused msg: ";msg.GetMessage();"row: ";msg.GetIndex();
                 print " col: ";msg.GetData()
             elseif msg.isListItemSelected()
                 print "Selected msg: ";msg.GetMessage();"row: ";msg.GetIndex();
                 print " col: ";msg.GetData()
             endif
         endif
     end while
End Function

Function get_playlist_videos(id as String) as object
    request = CreateObject("roUrlTransfer")
    port = CreateObject("roMessagePort")
    request.SetPort(port)
    request.Addheader("x-roku-reserved-dev-id","")
    request.SetCertificatesFile("pkg:/certs/bundle.crt")
    request.InitClientCertificates()
    request.SetUrl("https://blank.com/api/v1/playlists/" + id + "/videos.json" + "?order=created_at.desc&" + "token=" + config().api_Key)
    
    if (request.AsyncGetToString())
        while (true)
            msg = wait(1000, port)
            if (type(msg) = "roUrlEvent")
                code = msg.GetResponseCode()
                if (code = 200)
                    playlist_items = CreateObject("roArray", 10, true)
                    json = ParseJSON(msg.GetString())
                    for each item in json
                        items = {
                            ID:                    item.id
                            Title:                 item.title
                            ContentType:           "episode"
                            Description:           item.description
                            length:                FIX(item.duration)
                            HDPosterUrl:           item.image.thumb
                            SDPosterUrl:           item.image.thumb
                            streamFormat:          "mp4"
                            url:                   item.transcodings[0].http_uri
                            url:                   item.transcodings[1].http_uri           
                        }
                        
                        playlist_items.push(items)
                        print items
                    end for
                    return playlist_items
                endif
            endif
            if (msg = invalid)
                request.AsyncCancel()
            endif            
        end while
    endif
    return invalid
End Function
2

The first problem I see is that you don’t have a facade screen to keep the channel alive while you’re retrieving the content, so it’s probably closing the channel automatically before it gets far enough to display anything.

The second problem I see is this line:

for i = 0 to get_playlist_videos(rowTitles[j].id).count() -1

You appear to be making a web request for videos based on the row id that you’re looping through, but never using, then making a second web request inside that loop for videos based on a different item in the rowTitles array. On top of that, your call inside the loop is passing the rowTitles object, and not a string that the get_playlist_videos() function is expecting.

And finally, but likely unrelated to your issue… what’s the purpose in this loop?

 *rowTitles = CreateObject("roArray", 10, true)*
 *for i = 0 to this.row.count() -1*
 *rowTitles.push(this.row[i])*
 *end for*

Why copy “this.row” into a brand new array?

3

Thanks for your help TheEndless. I have resolved the three mentioned issues. The last portion that is giving me trouble is the eventloop.

Function Main()

sleep(500)

InitTheme()

'Create Facade Screen
facade=createobject(“roPosterScreen”)
facade.show()

this = {
gridScreenPort: CreateObject(“roMessagePort”)
gridScreen: CreateObject(“roGridScreen”)
row: get_playlists_by_player_id()
}

this.gridScreen.SetMessagePort(this.gridScreenPort)
this.gridScreen.setGridStyle(“four-column-flat-landscape”)
this.gridscreen.setDisplayMode(“photo-fit”)

rowTitles = CreateObject(“roArray”, 10, true)
for i = 0 to this.row.count() -1
rowTitles.push(this.row*.title)*
end for

this.gridScreen.SetupLists(this.row.Count())
this.gridScreen.SetListNames(rowTitles)

for j = 0 to this.row.Count() -1
this.gridScreen.SetContentList(j, get_playlist_videos(this.row

4

With the limited information I can glean from the code, my guess is that “this.row[row]” doesn’t actually contain a “video” attribute, since you’re making a separate request for those videos when you populate the grid screen. You probably need to add it in your SetContentList loop. Something like:

for j = 0 to this.row.Count() -1
    this.row[j].video = get_playlist_videos(this.row[j].id)
    this.gridScreen.SetContentList(j,this.row[j].video)
end for
5

That did it! Thanks again.