New Button in Helper Module error during touch

Getting Started Newbie Questions
#1

I created a module

custombutton.lua

local CustomButton = {}

local CustomButton_mt = { __ index = CustomButton}

local widget = require(“widget”)

function CustomButton.New(eventHandler)

local newCustomButton = widget.newButton {

label=“abc”,

labelColor= { default={255}, over={128}},

defaultFile=“test.png”,

width=100, height = 100,

x = display.contentCenterX,

y = display.contentCenterY,

onEvent = eventHandler

}

return setmetatable(newCustomButton, CustomButton_mt)

end

main.lua

local customButtonModule = require(“custombutton”)

local function onButtonClick(event)

print(“test”)

end

local button1 = customButtonModule.New(onButtonClick)

So button was created but whenever my mouse was over it, it throw an error saying 

“attempt to call a nil value”

Any idea what I did wrong in the module?

#2

You really shouldn’t change the metatable of a display object.

Also, not really a module.

This is more like what you want:

-- ex.lua -- local widget = require("widget") local public = {} function public.new( eventHandler ) local tmp = widget.newButton { label="abc", labelColor= { default={255}, over={128}}, defaultFile="test.png", width=100, height = 100, x = display.contentCenterX, y = display.contentCenterY, onEvent = eventHandler } return tmp end return public

later…

local ex = require("ex") local function onButtonClick(event) print("test") end local button1 = ex.new(onButtonClick)

In the future, please format code in posts:

formatyourcode.jpg

#3

You really shouldn’t change the metatable of a display object.

Also, not really a module.

This is more like what you want:

-- ex.lua -- local widget = require("widget") local public = {} function public.new( eventHandler ) local tmp = widget.newButton { label="abc", labelColor= { default={255}, over={128}}, defaultFile="test.png", width=100, height = 100, x = display.contentCenterX, y = display.contentCenterY, onEvent = eventHandler } return tmp end return public

later…

local ex = require("ex") local function onButtonClick(event) print("test") end local button1 = ex.new(onButtonClick)

In the future, please format code in posts:

formatyourcode.jpg