outputting a .txt file which usually updates itself

Scouser · August 2012

@loves_oi: The error on line 10 in my example can be fixed by replacing line 10

if stage:contains(sizeText) then stage:removeChild(sizeText) end

with the following

if sizeText and stage:contains(sizeText) then stage:removeChild(sizeText) end

loves_oi · August 2012

@ar2rsawseen ,

i edited it . error is still the same

@Scouser , ok i'm trying

Scouser · August 2012

This code works perfectly fine here:

local alreadyLoading = false
-- This is now your text
local sizeText=nil
 
local function onComplete(event)
	local x = #event.data
	print("size:", x )
 
	-- If the text is on the stage already then remove it 
	if sizeText and stage:contains(sizeText) then stage:removeChild(sizeText) end
	-- now create your new text
	sizeText = TextField.new(nil,"size : " .. x )
	sizeText:setPosition(10, 265)
	sizeText:setTextColor(0x007B25)
	stage:addChild(sizeText)
 
	alreadyLoading = false
end
 
local function onError()
	print("error")
	alreadyLoading = false
end
 
local function load()
	if not alreadyLoading then
		local loader = UrlLoader.new("<a href="http://www.catonmat.net/download/awk.cheat.sheet.txt&quot" rel="nofollow">http://www.catonmat.net/download/awk.cheat.sheet.txt&quot</a><img class="emoji" src="http://forum.giderosmobile.com/resources/emoji/wink.png" title=";)" alt=";)" height="20" />
		loader:addEventListener(Event.COMPLETE, onComplete)
		loader:addEventListener(Event.ERROR, onError)
		alreadyLoading = true
	end
end
 
local timer = Timer.new(60 * 1000, 0)  --it is updated every minute 
timer:addEventListener(Event.TIMER, load)
timer:start()
load()

I have just run it and it loaded 45722 bytes 3 times.

loves_oi · August 2012

@scouser , it seems so sensible but it doesn't give the correct ouput .It can't delete the old one. I have tested again and again

OZApps · August 2012

@loves_oi, again I am not sure on what is it that you are trying to achieve. However, the correct way to do this would be

1. Create the UI to display the information, i.e. create the textField and update this everytime you download the data

local theText = TextField.new(nil, "placeholder")
theText:setPosition(10,265)
theText:setTextColor(0x007B25)
stage:addChild(theText)
 
theTime = TextField.new(nil,"timestamp")
theTime:setPosition(10,285)
theTime:setTextColor(0xffffff)
stage:addChild(theTime)

2. Create a function that encapsulates the downloading like,

-- Function to download a file
function download(theURL)
  local loader = UrlLoader.new(theURL)
 
  function onComplete(event)
    theText:setText("size : " .. #event.data)
    theTime:setText(os.clock())
 
    loader:removeEventListener(Event.COMPLETE, onComplete)
    loader:removeEventListener(Event.ERROR, onError)
  end
 
  function onError(event)
    theText:setText("Could not download the file")
  end
 
  loader:addEventListener(Event.COMPLETE, onComplete)
  loader:addEventListener(Event.ERROR, onError)
end

3. Call this function using a timer

function load()
  download("<a href="http://www.catonmat.net/download/awk.cheat.sheet.txt&quot" rel="nofollow">http://www.catonmat.net/download/awk.cheat.sheet.txt&quot</a><img class="emoji" src="http://forum.giderosmobile.com/resources/emoji/wink.png" title=";)" alt=";)" height="20" />
end
 
local timer = Timer.new(3000,0)
timer:addEventListener(Event.TIMER, load)
timer:start()

OZApps · August 2012

and change the last double quotation mark on the url that keeps getting escaped on the forums.

loves_oi · August 2012

@OZApps , it worked correctly , thanks.
Besides, thank everybody which helps . i appreciate them .

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