HI Everyone,
I am trying to develop a ROKU App based “VideoPlayer” example that displays list of media items to user on “Sucessfull device linking”.
As soon the users clicks on the app, I show them the device linking screen with a 6 digit code.
if 6 digit code is validated on polling, the users are supposed to redirect to HomeScreen calling showHomeScreen(screen) function.
Instead, the app is closing on successful device linking.
After hours of debugging, I cannot seem to figure this out. Everything looks like working, Showing the Registration Screen, Successful validation and calling “InitCategoryFeed()”. Looks like something is forcing the app to close.
I am wondering if there are any asynchronous operations happening in the showLinkingCode() function below.
Below is code snippets from my code. I really appreciate if someone can help me find where I am going wrong.
PS: The device linking I am using is from ROKU developer blog post.
Please help me.
Thank You,
Sub Main()
'initialize theme attributes like titles, logos and overhang color
initTheme()
'prepare the screen for display and get ready to begin
screen=preShowHomeScreen("", "")
if screen=invalid then
print "unexpected error in preShowHomeScreen"
return
end if
print "show linking code screen"
rokulinkingcode = ShowLinkScreen()
if rokulinkingcode=1 then
print "set to go, time to get started"
showHomeScreen(screen)
end if
End Sub
'********************************************************
'** Show Linking Request Screen Return 0 if Code validation fails Else returns 1
'********************************************************
Function ShowLinkScreen() As Integer
result =0
dt = CreateObject("roDateTime")
' create a roCodeRegistrationScreen and assign it a roMessagePort
port = CreateObject("roMessagePort")
screen = CreateObject("roCodeRegistrationScreen")
screen.SetMessagePort(port)
' add some header text
screen.AddHeaderText("Account Registration")
' add some buttons
screen.AddButton(1, "Get new code")
screen.AddButton(2, "Back")
screen.AddParagraph(" ")
' Focal text should give specific instructions to the user
screen.AddFocalText("Go to http://www.mywebsite.net/roku, log into your account, and enter the following code.", "spacing-normal")
' display a retrieving message until we get a linking code
screen.SetRegistrationCode("Retrieving...")
screen.Show()
' get a new code
linkingCode = GetLinkingCode()
if linkingCode <> invalid
screen.SetRegistrationCode(linkingCode.code)
else
screen.SetRegistrationCode("Failed to get code...")
end if
screen.Show()
while true
' we want to poll the API every 15 seconds for validation,
' so set a 5000 millisecond timeout on the Wait()
msg = Wait(5000, screen.GetMessagePort())
if msg = invalid
' poll the API for validation
if ValidateLinkingCode(linkingCode.code)
' if validation succeeded, close the screen
result =1
exit while
screen.ClearButtons()
end if
dt.Mark()
if dt.AsSeconds() > linkingCode.expires
' the code expired. display a message, then get a new one
d = CreateObject("roMessageDialog")
dPort = CreateObject("roMessagePort")
d.SetMessagePort(dPort)
d.SetTitle("Code Expired")
d.SetText("This code has expired. Press OK to get a new one")
d.AddButton(1, "OK")
d.Show()
Wait(0, dPort)
d.Close()
screen.SetRegistrationCode("Retrieving...")
screen.Show()
linkingCode = GetLinkingCode()
if linkingCode <> invalid
screen.SetRegistrationCode(linkingCode.code)
else
screen.SetRegistrationCode("Failed to get code...")
end if
screen.Show()
end if
else if type(msg) = "roCodeRegistrationScreenEvent"
if msg.isScreenClosed()
print "screen closed";
exit while
else if msg.isButtonPressed()
if msg.GetIndex() = 1
' the user wants a new code
code = GetLinkingCode()
linkingCode = GetLinkingCode()
if linkingCode <> invalid
screen.SetRegistrationCode(linkingCode.code)
else
screen.SetRegistrationCode("Failed to get code...")
end if
screen.Show()
else if msg.GetIndex() = 2
print " the user wants to close the screen"
screen.Close()
result =0
exit while
end if
end if
end if
end while
print result
return result
end function
'********************************************************
'** Show GetLinkingCode
'********************************************************
function GetLinkingCode()
print "getting linking code..."
result = invalid
DeviceESN = GetDeviceESN()
xfer = CreateObject("roURLTransfer")
xfer.SetURL("myURL?action=GetLinkingCode&DeviceESN="+DeviceESN)
response = xfer.GetToString()
xml = CreateObject("roXMLElement")
if xml.Parse(response)
result = {
code: xml.linkingCode.GetText()
expires: StrToI(xml.linkingCode@expires)
}
end if
return result
end function
'********************************************************
'** Show ValidateLinkingCode
'********************************************************
function ValidateLinkingCode(linkingCode)
result = false
print "Validating Result---"
xfer = CreateObject("roURLTransfer")
xfer.SetURL("myURL?action=ValidateLinkingCode&code=" + linkingCode)
response = xfer.GetToString()
xml = CreateObject("roXMLElement")
if xml.Parse(response)
print "Validating Result: " + xml.status@msg
if UCase(xml.status@msg) = "SUCCESS"
sec = CreateObject("roRegistrySection", "mySection")
sec.Write("deviceToken", xml.deviceToken.GetText())
sec.Flush()
result = true
end if
end if
return result
end function
