Hi there,
I’m running against to the following error:
?:0: attempt to index field ‘parent’ (a nil value)
message
stack traceback:
?: in function <?:218>
[C]: ?
?: in function <?:400>
?: in function <?:218>
No line indication (there is no line 218 in the code).
It is happening every single time I click on an image (after run the listener code)
-- -- Story -- display.setStatusBar( display.DefaultStatusBar ) local storyboard = require( "storyboard" ) storyboard.purgeOnSceneChange = true -- create the new scene (story) local scene = storyboard.newScene() local content, navButton1, navButton2 local translation = require ("scripts.translation") local getTranslation = translation.getTranslation local widget = require( "widget" ) local green = 100 local variation = -.5 local mainGroup local navButton1 local navButton2 local frameButton local backButton local scrollView function onBackButtonTouch( event ) -- listener cannot appear after define the button if event.phase == "began" then Runtime:removeEventListener("enterFrame", changeFrameColor) local storyboardOptions = {effect="slideLeft", time=750} storyboard.gotoScene( "menu", storyboardOptions ) end return true end function changePage ( event ) if event.phase == "began" then showPageNavigation(event.target.pageNumber) end return true -- \<\<\<---HERE IS WHERE THE ERROR IS RAISING end function loadContent(pageNumber) content = display.newImageRect( getTranslation("story", language, "PAGE" .. pageNumber), 744, 1052) content.x = (contentWidth / 2) content.y = content.contentHeight / 2 content:setReferencePoint(display.TopLeftReferencePoint) if scrollView.numChildren \> 1 then scrollView:remove(1) end scrollView:insert( content ) scrollView:scrollTo( "top", { time = 1 } ) end function showPageNavigation(currentPage) if currentPage == 1 then frameButton.y = navButton1.y else frameButton.y = navButton2.y end loadContent(currentPage) end function changeFrameColor( event ) frameButton:setFillColor(green, green, green-99,255) green = green + variation if green \< 100 or green \> 180 then variation = variation \* -1 end end function setupInterface() navButton1 = display.newImageRect( getTranslation("story", language, "THUMB1"), 90, 127) navButton2 = display.newImageRect( getTranslation("story", language, "THUMB2"), 90, 127) navButton1.x = navButton1.contentWidth / 1.3 navButton1.y = navButton1.contentHeight navButton1.pageNumber = 1 navButton1:setReferencePoint(display.CenterReferencePoint) navButton2.x = navButton2.contentWidth / 1.3 navButton2.y = navButton2.contentHeight \* 2.2 navButton2.pageNumber = 2 navButton2:setReferencePoint(display.CenterReferencePoint) frameButton = display.newRect(navButton1.x, navButton1.y, navButton1.contentWidth + 16, navButton1.contentHeight + 16) frameButton.x = navButton1.x frameButton.y = navButton1.y frameButton:setFillColor(5, green, 5, 255) frameButton:setReferencePoint(display.CenterReferencePoint) -- Create a ScrollView scrollView = widget.newScrollView { backgroundColor={0,0,0}, left = 0, top = 0, width = contentWidth, height = contentHeight, scrollWidth = contentWidth, scrollHeight = contentHeight, id = "onBottom", horizontalScrollingDisabled = true, verticalScrollingDisabled = false, } backButton = display.newImageRect("images/back.png", 90, 101) backButton.x = frameButton.x backButton.y = contentHeight - frameButton.contentHeight / 2 backButton:setReferencePoint(display.CenterReferencePoint) backButton:addEventListener("touch", onBackButtonTouch) navButton1:addEventListener("touch", changePage) navButton2:addEventListener("touch", changePage) end -- Called when the scene's view does not exist: function scene:createScene( event ) local prior\_scene = storyboard.getPrevious() if prior\_scene ~= nil then storyboard.removeScene( prior\_scene ) end mainGroup = self.view setupInterface() showPageNavigation(1) mainGroup:insert(scrollView) mainGroup:insert(frameButton) mainGroup:insert(navButton1) mainGroup:insert(navButton2) mainGroup:insert(backButton) Runtime:addEventListener("enterFrame", changeFrameColor) end -- Called immediately after scene has moved onscreen: function scene:enterScene( event ) end -- Called when scene is about to move offscreen: function scene:exitScene( event ) local group = self.view end -- If scene's view is removed, scene:destroyScene() will be called just prior to: function scene:destroyScene( event ) local group = self.view end ----------------------------------------------------------------------------------------- -- END OF YOUR IMPLEMENTATION ----------------------------------------------------------------------------------------- -- "createScene" event is dispatched if scene's view does not exist scene:addEventListener( "createScene", scene ) -- "enterScene" event is dispatched whenever scene transition has finished scene:addEventListener( "enterScene", scene ) -- "exitScene" event is dispatched whenever before next scene's transition begins scene:addEventListener( "exitScene", scene ) -- "destroyScene" event is dispatched before view is unloaded, which can be -- automatically unloaded in low memory situations, or explicitly via a call to --storyboard.purgeScene() or storyboard.removeScene(). scene:addEventListener( "destroyScene", scene ) -- Without the folloing line the code would bomb with a "gotoScene" error return scene -----------------------------------------------------------------------------------------
The code above could be improved a lot, but I’m stuck with this error…
Any ideas anyone ?
Regards, Emerson
