easiest way to make button to *.lua file CORONA SDK - button

Question

What is the easiest way to make button to *.lua file?
I want to make something like : main.lua (tap button) --> scene1.lua (BACK tap button) --> main.lua
I tried something like this:
local storyboard = require ("storyboard")
local scene = storyboard.newScene()
local logo tlo = display.newImage("bg.png", 360, 640)
local zamow = display.newImage("1zamow.png", 185, 340)
local gadgety= display.newImage("2gadgety.png", 535, 340)
local facebook = display.newImage("3facebook.png", 185, 700)
local oferta = display.newImage("4oferta.png", 535, 700)
local cennik = display.newImage("5cennik.png", 185, 1060)
local kontakt = display.newImage("6kontakt.png", 535, 1060)
function cennik:touch (event)
storyboard.gotoScene("cennik", "fade", 400)
end
cennik:addEventListener( "touch", cennik )
return scene'
after that I have runtime error:
attempt to concatenate global 'sceneName' (a nil value)
I'm new one in Corona so please be nice :)

Answer 1

Its better to use widget for creating button. If cennik is your button image and scene1.lua is the next page, then code be written as
local storyboard = require ("storyboard")
local widget=require "widget"
local scene=storyboard.newScene()
local logotlo = display.newImage("bg.png", 360, 640)
local zamow = display.newImage("1zamow.png", 185, 340)
local gadgety= display.newImage("2gadgety.png", 535, 340)
local facebook = display.newImage("3facebook.png", 185, 700)
local oferta = display.newImage("4oferta.png", 535, 700)
local kontakt = display.newImage("6kontakt.png", 535, 1060)
local cennikBtn
local function onStartButtonRelease()
storyboard:gotoScene("scene1")
end
cennikBtn = widget.newButton {
defaultFile="5cennik.png",
onRelease=onStartButtonRelease
}
cennikBtn.x,cennikBtn.y =185, 1060
function scene:createScene(event)
local group = self.view
group:insert(logotlo)
group:insert(zamow)
group:insert(gadgety)
group:insert(facebook)
group:insert(oferta)
group:insert(kontakt)
group:insert(cennikBtn)
end
function scene:enterScene( event )
local group = self.view
end
function scene:exitScene( event )
local group = self.view
storyboard.removeScene("main")
end
function scene:destroyScene( event )
local group = self.view
end
scene:addEventListener( "createScene", scene )
scene:addEventListener( "enterScene", scene )
scene:addEventListener( "exitScene", scene )
scene:addEventListener( "destroyScene", scene )
return scene

Answer 2

Your code looks fine except for the ' after return scene and your event handler needs to be like this:
-- For each time you tap the image, this event gets triggered twice. Make sure you only dispatch your gotoScene once!
function cennik:touch(event)
if event.phase == "began" then
-- This happens on finger touching
elseif event.phase == "ended" then
-- This happens when the finger is lifted
storyboard.gotoScene("cennik", "fade", 400)
end
-- if you want to prevent the touch event from propagating (aka triggering other images touch event) you must return true
return true
end