Listener problem

Other
#1

Hi guys. I contact you cause i’ve a big problem with a listener touch. I want realize a memory games. In this function there is a listener touch that i can’t remove. When i press the button back to return in main menu the listener remain active. How i can do? I tried remove listener in button back, but i had error.

--Set up game function function game(object, event) if(event.phase == "began") then if(checkForMatch == false and secondSelect == 0) then --Flip over first button buttonCover[object.number].isVisible = false; lastButton = object checkForMatch = true elseif(checkForMatch == true) then if(secondSelect == 0) then --Flip over second button buttonCover[object.number].isVisible = false; secondSelect = 1; --If buttons do not match, flip buttons over if(lastButton.myName ~= object.myName) then matchText.text = "Match Not Found!"; timer.performWithDelay(1250, function() matchText.text = " "; checkForMatch = false; secondSelect = 0; buttonCover[lastButton.number].isVisible = true; buttonCover[object.number].isVisible = true; end, 1) --If buttons DO match, remove buttons elseif(lastButton.myName == object.myName) then matchText.text = "Match Found!"; timer.performWithDelay(1250, function() matchText.text = " "; checkForMatch = false; secondSelect = 0; lastButton:removeSelf(); object:removeSelf(); buttonCover[lastButton.number]:removeSelf(); buttonCover[object.number]:removeSelf(); end, 1) end end end end end --Place buttons on screen for count = 1,3 do x = x + 90 y = 20 for insideCount = 1,4 do y = y + 90 --Assign each image a random location on grid temp = math.random(1,#buttonImages) button[count] = display.newImage(buttonImages[temp] .. ".png"); --Position the button button[count].x = x; button[count].y = y; --Give each a button a name button[count].myName = buttonImages[temp] button[count].number = totalButtons --Remove button from buttonImages table table.remove(buttonImages, temp) --Set a cover to hide the button image buttonCover[totalButtons] = display.newImage("button.png"); buttonCover[totalButtons].x = x; buttonCover[totalButtons].y = y; totalButtons = totalButtons + 1 --Attach listener event to each button button[count].touch = game button[count]:addEventListener( "touch", button[count] ) end end
#2

the same way you add it you remove it.

button[count]:removeEventListener

#3

I try already…

#4

If you wait 1.25 seconds before hitting the back button, does the code then work as expected? 

The delay on your timers seems somewhat high, there’s plenty of time for someone to hit the back button while the timer is still ticking.  You might need to catch the timer handles and then cancel them when the back button is pressed.

#5

the same way you add it you remove it.

button[count]:removeEventListener

#6

I try already…

#7

If you wait 1.25 seconds before hitting the back button, does the code then work as expected? 

The delay on your timers seems somewhat high, there’s plenty of time for someone to hit the back button while the timer is still ticking.  You might need to catch the timer handles and then cancel them when the back button is pressed.