故事板 - 多場景enterScene/existScene發生 - 這段代碼有什麼問題？

Question

花了幾個小時試圖在這裏找出故事板問題。我已經修剪了一個示例項目來複制它。

問題：

• 從現場1去，場景2，然後回到場景1，然後通過場景切換了幾次後，我得到如下：
• 當進入一個場景記錄顯示多個enterScene/exitScene被觸發
• 似乎通過也許多個背景觸摸監聽器正在註冊，但我試圖刪除這些在exitScene函數
• 我在試用版：2011.704（2011.12 .8）

輸出

<code> 
-- Click on background to go back to screen_example1 

storyboard.gotoScene(screen_example1) 
screen_example1: enterScene 

storyboard.gotoScene(screen_example1) 
screen_example1: exitScene 
screen_example1: enterScene 

storyboard.gotoScene(screen_example1) 
screen_example1: exitScene 
screen_example1: enterScene 

storyboard.gotoScene(screen_example1) 
screen_example1: exitScene 
screen_example1: enterScene 

. 
. 
. 
etc 
</code> 

代碼：三個文件：主要和兩個場景文件：

main.lua

<code> 
display.setStatusBar(display.HiddenStatusBar) 
local storyboard = require "storyboard" 
storyboard.gotoScene("screen_example1") 
</code> 

screen_example1.lua

<code> 
local storyboard = require("storyboard") 
local scene = storyboard.newScene() 

local function onScreenTouch(event) 
    if event.phase == "began" then 
     print("") 
     storyboard.gotoScene("scene_towerView") 
    end 
end 


function scene:createScene(event) 
    print ("screen_example1 - createScene") 
    local image = display.newImage("bg.jpg") 
    scene.view:insert(image) 
end 

function scene:enterScene(event) 
    print ("screen_example1: enterScene") 
    scene.view:addEventListener("touch", onScreenTouch) 
end 

function scene:exitScene(event) 
    print ("screen_example1: exitScene") 
    scene.view:removeEventListener("touch", onScreenTouch) 
end 

-- Scene Listeners 
scene:addEventListener("createScene", scene) 
scene:addEventListener("enterScene", scene) 
scene:addEventListener("exitScene", scene) 
scene:addEventListener("destroyScene", scene) 


return scene 
</code> 

個scene_towerView.lua

<code> 
local storyboard = require("storyboard") 
local scene = storyboard.newScene() 

local function onScreenTouch(event) 
    if event.phase == "began" then 
     print("") 
     print("storyboard.gotoScene(screen_example1)") 
     storyboard.gotoScene("screen_example1") 
    end 
end 

-- Scene Handlers 

function scene:createScene(event) 
    print ("TowerScene - createScene") 

    -- -- Background Image 
    local image = display.newImage("bg2.jpg") 
    scene.view:insert(image) 
end 

function scene:enterScene(event) 
    print ("TowerScene - enterScene") 
    scene.view:addEventListener("touch", onScreenTouch) 
end 

-- Scene Listeners 
scene:addEventListener("createScene", scene) 
scene:addEventListener("enterScene", scene) 
scene:addEventListener("exitScene", scene) 
scene:addEventListener("destroyScene", scene) 

return scene 
</code> 

Answer 1

你嘗試加入的觸摸事件代碼的結尾「返回true」？這讓我難住了最長的時間。

Different layers in Corona/Lua

ķ