How to detect if an object exist AND How to prevent user frequently press button

Solar2D Lua Language
1

Dear all,

This is all about handling event listener I believe.

the case is , I have a button, everytime I click it, it will do something.

say:

local button = display.newRect(0,0,200,200)

function click (e)

local texttext = display.newText (“testestestest”, 0,0, native.systemFont,12)

timer.performWithDelay(1000,function()

texttext:removeSelf()

end,1)

end

button:addEventListener(“tap”,click)

so, it works properly. However, when I click the button frequently, error start to happen. It may due to the delay on respond of the timer. what I want is to make the button disable on that 1 sec (when timer counting), can it be done?

Again! Thanks Guys!!!

2

Dear all,

This is all about handling event listener I believe.

the case is , I have a button, everytime I click it, it will do something.

say:

local button = display.newRect(0,0,200,200)

function click (e)

local texttext = display.newText (“testestestest”, 0,0, native.systemFont,12)

timer.performWithDelay(1000,function()

texttext:removeSelf()

end,1)

end

button:addEventListener(“tap”,click)

so, it works properly. However, when I click the button frequently, error start to happen. It may due to the delay on respond of the timer. what I want is to make the button disable on that 1 sec (when timer counting), can it be done?

on the other hand, I want to set…remove the object if it is existed:

I have just tried:

if texttetxt ~= nil then

texttext:removeEventListener(“tap”,click)

end

but if texttext is alpha=0 or its isVisible is false, it will have error saying removeEventListener is nil.

Again! Thanks Guys!!!

Well I have figured out i can use the following code:

if texttext.isVisible then

texttext:removeEventListener(“tap”,click)

end

and it works @@

3

Dear all,

This is all about handling event listener I believe.

the case is , I have a button, everytime I click it, it will do something.

say:

local button = display.newRect(0,0,200,200)

function click (e)

local texttext = display.newText (“testestestest”, 0,0, native.systemFont,12)

timer.performWithDelay(1000,function()

texttext:removeSelf()

end,1)

end

button:addEventListener(“tap”,click)

so, it works properly. However, when I click the button frequently, error start to happen. It may due to the delay on respond of the timer. what I want is to make the button disable on that 1 sec (when timer counting), can it be done?

on the other hand, I want to set…remove the object if it is existed:

I have just tried:

if texttetxt ~= nil then

texttext:removeEventListener(“tap”,click)

end

but if texttext is alpha=0 or its isVisible is false, it will have error saying removeEventListener is nil.

Again! Thanks Guys!!!

Well I have figured out i can use the following code:

if texttext.isVisible then

texttext:removeEventListener(“tap”,click)

end

and it works @@