Help a newbie with a button problem

Getting Started Newbie Questions
#1

Hallo,

Just started to use corona and stuck in a simple place. How to make a button do something.

In simulator I see that button reacts to being pressed/released, but code is not running assigned to button:

local widget = require(“widget”)

local button = widget.newButton

{

defaultFile = “b1.png”,

overFile = “b2.png”,

onRelease = pressButton

}

button.x = 240

button.y = 400

– THIS IS NOT WORKING :frowning:

local function pressButton( event )

button.x = 240

button.y = 500    

end

=================

PLEASE PLEASE, how to make the damn button do stuff?

Thank you all

Lauras

#2

Have you tried to move the function above the declaration of the button?

When onRelease is reached pressButton is nil.

(Hope this helps…) 

#3

Tried. 

It gives error

attempt to index global ‘button’

What is strange, that I have done my code according to samples provided in corona. But mine doesnt’t work.

Any other solution please?

Lauras

#4

Instead of using the “button” variable in your function, use this instead:

event.target

So for instance

event.target.x = 10

#5

@luaras.balaisa

Sorry, about that. Do both what Danny and I suggested. 

Regarding buttons and touch events, phases are quite important and a good thing to look into. This is a good start:

http://developer.coronalabs.com/content/events-and-listeners#Touch_Events

#6

Have you tried to move the function above the declaration of the button?

When onRelease is reached pressButton is nil.

(Hope this helps…) 

#7

Tried. 

It gives error

attempt to index global ‘button’

What is strange, that I have done my code according to samples provided in corona. But mine doesnt’t work.

Any other solution please?

Lauras

#8

Instead of using the “button” variable in your function, use this instead:

event.target

So for instance

event.target.x = 10

#9

@luaras.balaisa

Sorry, about that. Do both what Danny and I suggested. 

Regarding buttons and touch events, phases are quite important and a good thing to look into. This is a good start:

http://developer.coronalabs.com/content/events-and-listeners#Touch_Events