Hello!
I’m trying some code using the director class.
I’ve work with 2 scenes (scene1, scene2).
Please, pay attention to this: At scene1 I press a button, go to scene2, press another button at scene2 and come back to scene1, press the same button go again to scene2 and finally press another button that show me an image.
With this code everything is ok:
module(..., package.seeall)
local ui = require("ui")
local scrollNav = require("scrollNav")
local contido = require("contidoSlider")
local localGroup = display.newGroup()
local sliderPrincipal
local sliderSecundario
local slider2
local ancho,alto=display.contentWidth,display.contentHeight
local fondo=display.newImage("fondo.jpg")
local accionInicio = function (event)
if event.phase == "release" then
director:changeScene("escena1","moveFromLeft")
end
end
local function elementoElexido(event)
slider2=display.newGroup()
local sliderSecundario=display.newImage("fondo\_thumb.png",0,0)
slider2:insert(sliderSecundario)
slider2.x=0
slider2.y=alto-150
localGroup:insert(slider2)
end
--Buttons
local boton\_inicio = ui.newButton{
default = "bot\_inicio.png",
over = "bot\_inicio.png",
onEvent = accionInicio,
emboss = true
}
local boton\_editar = ui.newButton{
default = "bot\_editar\_es.png",
over = "bot\_editar\_es.png",
onEvent = elementoElexido,
emboss = true
}
local function initVars ()
-----------------------------------
-- Insercións
-----------------------------------
localGroup:insert(fondo)
localGroup:insert(boton\_inicio)
localGroup:insert(boton\_editar)
-----------------------------------
-- Posicionamentos
-----------------------------------
boton\_inicio.x=40
boton\_inicio.y=45
boton\_editar.x=40
boton\_editar.y=alto-45
end
function clean ( event )
--print("escena 2 limpa")
end
---------------------------------------------------------------
-- Todas as escenas deben ter esta función NEW
---------------------------------------------------------------
function new()
-----------------------------------
-- Inicializo variables
-----------------------------------
initVars()
return localGroup
end
Runtime:addEventListener("scrollNav.elemElexido", elementoElexido) But when I try to use a new function navegadorPrincipal(), the code crashes.
With this function, I use a scrollNav class instead a button to show the image.
When I go to this scene at the first time, everything works ok, but if a go back to previous scene and then come again to this second scene, the code crashes.
Works fine the first time, and crashes then.
module(..., package.seeall)
local ui = require("ui")
local scrollNav = require("scrollNav")
local contido = require("contidoSlider")
local localGroup = display.newGroup()
--local slider2=display.newGroup()
local sliderPrincipal
local sliderSecundario
local slider2
local ancho,alto=display.contentWidth,display.contentHeight
local fondo=display.newImage("fondo.jpg")
local function navegadorPrincipal()
sliderPrincipal = scrollNav.new({left=0, right=0, tm=422, lm=0, sp=0, altoS=50})
for index, value in ipairs(contido) do
local thumb = display.newImage(contido[index].thumb)
sliderPrincipal:insertButton(thumb, contido[index].asset)
end
return true
end
navegadorPrincipal()
local accionInicio = function (event)
if event.phase == "release" then
director:changeScene("escena1","moveFromLeft")
end
end
local function elementoElexido(event)
slider2=display.newGroup()
local sliderSecundario=display.newImage("fondo\_thumb.png",0,0)
slider2:insert(sliderSecundario)
slider2.x=0
slider2.y=alto-150
localGroup:insert(slider2) -- At this line crash the code with: attempt to call method 'insert' (a nil value)
end
--Buttons
local boton\_inicio = ui.newButton{
default = "bot\_inicio.png",
over = "bot\_inicio.png",
onEvent = accionInicio,
emboss = true
}
local function initVars ()
-----------------------------------
-- Insercións
-----------------------------------
localGroup:insert(fondo)
localGroup:insert(boton\_inicio)
localGroup:insert(sliderPrincipal)
-----------------------------------
-- Posicionamentos
-----------------------------------
boton\_inicio.x=40
boton\_inicio.y=45
end
function clean ( event )
--print("escena 2 limpa")
end
---------------------------------------------------------------
-- Todas as escenas deben ter esta función NEW
---------------------------------------------------------------
function new()
-----------------------------------
-- Inicializo variables
-----------------------------------
initVars()
return localGroup
end
Runtime:addEventListener("scrollNav.elemElexido", elementoElexido) Could anybody tell me why notifies me the error on the elementoElexido function?
What am I doing wrong?
TIA [import]uid: 44013 topic_id: 9854 reply_id: 309854[/import]