Roku Developer Program

[IRoad]

Hi developers.
I have a question about the Banner ADS, I follow your script on the forum and few works very well but I have a problem to up to date the graphic, for example if today I want to have Adidas as sponsor and tomorrow i would like have Nike as sponsor I can't.
I changed the jpeg from my URL directory but Roku NOT automatically change the graphic still again on the old graphic, someone do you know why?
thank you in advance

[RokuJoel]

add a random string to your url kinda like this:

url="http://myserver.com/image.jpg"
imgurl=url+"?rand="+rnd(10000).tostr()

this should "bust" the cache and force download of the new image. You might want to use a flag file on your server to turn this on and off:

xfer=createobject("rourltransfer")
flagfile=("http://myserver.com/flag.txt")
xfer.seturl(flagfile)
flag=xfer.gettostring()
if flag="true" then
   imgurl=url+"?rand="+rnd(10000).tostr()
else if flagfile="false"
   imgurl=url
end if

so you don't waste bandwidth reloading the same graphic over and over, until you actually need to change the image.

- Joel

[IRoad]

Hi Joel,
I tried for suggestion but I am confuse about where put your script, I believe on POSTER SCREEN, but not it appear.

Follow a part of the script were i put it

'******************************************************
'** Display the home screen and wait for events from
'** the screen. The screen will show retreiving while
'** we fetch and parse the feeds for the game posters
'******************************************************
Function showPosterScreen(screen As Object, category As Object) As Integer

if validateParam(screen, "roPosterScreen", "showPosterScreen") = false return -1
if validateParam(category, "roAssociativeArray", "showPosterScreen") = false return -1

m.curCategory = 0
m.curShow = 0
temp=getcategorylist(category)

xfer=createobject("rourltransfer")
flagfile=("http://xxxxxxxxxxxx.cloudfront.net/vodrokubanner/540x60.jpg")
xfer.seturl(flagfile)
flag=xfer.gettostring()
if flag="true" then
imgurl=url+"?rand="+rnd(10000).tostr()
else if flagfile="false"
imgurl=url
end if

if temp.count() > 1 then
screen.SetListNames(temp)
?temp.count();" categories"
else
?"only ";temp.count();" category"
end if
screen.SetContentList(getShowsForCategoryItem(category, m.curCategory))
screen.Show()

while true
msg = wait(0, screen.GetMessagePort())
if type(msg) = "roPosterScreenEvent" then
print "showPosterScreen | msg = "; msg.GetMessage() " | index = "; msg.GetIndex()
if msg.isListFocused() then
m.curCategory = msg.GetIndex()
m.curShow = 0
screen.setcontentlist([])
screen.SetFocusedListItem(m.curShow)
screen.showmessage("Retrieving")
screen.SetContentList(getShowsForCategoryItem(category, m.curCategory))
screen.clearmessage()
print "list focused | current category = "; m.curCategory
else if msg.isListItemSelected() then
m.curShow = msg.GetIndex()
print "list item selected | current show = "; m.curShow
m.curShow = displayShowDetailScreen(category, m.curShow)
screen.SetFocusedListItem(m.curShow)
print "list item updated | new show = "; m.curShow
else if msg.isScreenClosed() then
return -1
end if
end If
end while


End Function

[RokuJoel]

Hi,


the flagfile is just a text file you would set to "true" or "false" to force an update of your image on the devices.

you need also to have an SD sized ad and an HD sized ad, and you use SetAdURL(SDAdURL,HDAdURL).

so:

'******************************************************
'** Display the home screen and wait for events from
'** the screen. The screen will show retreiving while
'** we fetch and parse the feeds for the game posters
'******************************************************
Function showPosterScreen(screen As Object, category As Object) As Integer

if validateParam(screen, "roPosterScreen", "showPosterScreen") = false return -1
if validateParam(category, "roAssociativeArray", "showPosterScreen") = false return -1

m.curCategory = 0
m.curShow = 0
temp=getcategorylist(category)

xfer=createobject("rourltransfer")
flagfile=("http://xxxxxxxxxxxx.cloudfront.net/vodrokubanner/flag.txt")
SDURL="http://xxxxxxxxxxxx.cloudfront.net/vodrokubanner/540x60.jpg"
HDURL="http://xxxxxxxxxxxx.cloudfront.net/vodrokubanner/728x90.jpg"
xfer.seturl(flagfile)
flag=xfer.gettostring()
if flag="true" then
SDAdURL=SDURL+"?rand="+rnd(10000).tostr()
HDAdURL=HDURL+"?rand="+rnd(10000).tostr()
else if flagfile="false"
SDAdURL=SDURL
HDAdURL=HDURL
end if

if temp.count() > 1 then
screen.SetListNames(temp)
?temp.count();" categories"
else
?"only ";temp.count();" category"
end if
screen.SetContentList(getShowsForCategoryItem(category, m.curCategory))

screen.SetAdURL(SDAdURL,HDAdURL)

screen.Show()

while true
msg = wait(0, screen.GetMessagePort())
if type(msg) = "roPosterScreenEvent" then
print "showPosterScreen | msg = "; msg.GetMessage() " | index = "; msg.GetIndex()
if msg.isListFocused() then
m.curCategory = msg.GetIndex()
m.curShow = 0
screen.setcontentlist([])
screen.SetFocusedListItem(m.curShow)
screen.showmessage("Retrieving")
screen.SetContentList(getShowsForCategoryItem(category, m.curCategory))
screen.clearmessage()
print "list focused | current category = "; m.curCategory
else if msg.isListItemSelected() then
m.curShow = msg.GetIndex()
print "list item selected | current show = "; m.curShow
m.curShow = displayShowDetailScreen(category, m.curShow)
screen.SetFocusedListItem(m.curShow)
print "list item updated | new show = "; m.curShow
else if msg.isScreenClosed() then
return -1
end if
end If
end while

By the way, if when you post code to the forum, please select the code and click the Code button to format it as code.

- Joel

[TheEndless]

"RokuJoel" wrote:
the flagfile is just a text file you would set to "true" or "false" to force an update of your image on the devices.

How would he know when to change the flag file back to false? It'd probably make more sense to set the date of the last update in that file, then store that date on the box to compare against. Or, better yet, if he's loading that file anyway, why not just put the url of the images in that file, and update that when a new ad is available.

[RokuJoel]

Those are probably better solutions.

- Joel

[IRoad]

Thanks RokuJoel

[IRoad]

Hi,
in the flag.txt i need just to write "true" or I need write more information inside the .txt file....