我正在使用Corona SDK在lua中开发应用程序。
我正在尝试从我的buildscene2转到我的mainbuildscene，并且我成功调用了新场景，但来自buildscene2的对象没有被删除。我在mainbuildscene.lua文件中添加了删除前一个场景的代码。我尝试在scene：create（）和scene：show（）中添加它。都没有奏效。当从同一应用程序中的其他场景转换时，这种确切的方法对我有用。我在这里做的是创建一个使用composer.gotoScene（“mainbuildscene”）的函数，然后在按下按钮时调用该函数。我在那里有一堆随机打印，只是为了查看是否正在读取代码。它是。
我找了其他人遇到这个问题。很多人都经历过这种情况，但他们的解决方案都没有对我有用。我已经尝试移动事件监听器，当按下下一个按钮到snapTo函数内部然后退出。如果听众在外面，它会给我一个错误。
另外，我知道问题不在我调用新场景时，因为我放了一张随机图片来测试那个场景中的物体是否会出现，而且他们确实是这样，除了它们超出了来自buildscene2的对象。我甚至尝试在第二个场景中添加一个函数，当调用它时，会破坏第一个场景。没工作。
除非我做错了什么，所以我在buildscene2中的所有显示对象都会添加到组中。
这是我的buildscene2文件。这是我正在转移并试图销毁的文件。
local composer = require( "composer" )
local scene = composer.newScene()
-- -----------------------------------------------------------------------------------------------------------------
-- All code outside of the listener functions will only be executed ONCE unless "composer.removeScene()" is called.
-- -----------------------------------------------------------------------------------------------------------------
-- local forward references should go here
-- ------------------------------------------------------------------------------
-- "scene:create()"
function scene:create( event )
local sceneGroup = self.view
-- Initialize the scene here.
-- Example: add display objects to "sceneGroup", add touch listeners, etc.
local group = display.newGroup()
composer.removeScene("thirdscene")
----------EMPTY BOXES
local itemFrame1=display.newImageRect("images/selection-box.png", 200,200)
itemFrame1.x=140
itemFrame1.y=130
group:insert(itemFrame1)
local itemFrame2=display.newImageRect("images/selection-box.png", 200,200)
itemFrame2.x=387
itemFrame2.y=130
group:insert(itemFrame2)
local itemFrame3=display.newImageRect("images/selection-box.png", 200,200)
itemFrame3.x=635
itemFrame3.y=130
group:insert(itemFrame3)
---------------HEADS
local robotHead=display.newImageRect("images/robot-head.png", 195,180)
robotHead.x=137
robotHead.y=130
robotHead.rotation = 180
robotHead.headtype=1
local rabbitHead=display.newImageRect("images/rabbit-head.png", 200, 180)
rabbitHead.x=387
rabbitHead.y=130
rabbitHead.rotation = 180
rabbitHead.headtype=2
local dinoHead=display.newImageRect("images/dino-head.png", 210, 190)
dinoHead.x=665
dinoHead.y=140
dinoHead.rotation = 180
dinoHead.headtype=3
-------------------OTHER
local nextButton=display.newImageRect("images/donebutton.png", 130, 130)
nextButton.x=140
nextButton.y=710
group:insert(nextButton)
nextButton.isVisible = false
local nextText=display.newText("NEXT", 100,100, native.systemFontBold, 40)
nextText.x=140
nextText.y=710
nextText:setTextColor (0,0,0)
group:insert(nextText)
function snapTo (event)
function makeVisible (event)
nextButton.isVisible = true
end
if event.phase == "began" then
event.target.markX = event.target.x -- store x location of object
event.target.markY = event.target.y -- store y location of object
torsoPlaced=event.target.torsoName
end
function addHeadsToGroup (event)
group:insert(robotHead)
group:insert(rabbitHead)
group:insert(dinoHead)
end
if event.phase == "moved" then
local x = (event.x - event.xStart) + event.target.markX
local y = (event.y - event.yStart) + event.target.markY
event.target.x, event.target.y = x, y -- move object based on calculations above
function demolish1 (event)
robotHead.x = 1000
robotHead.y = 900
robotHead.width = 10
robotHead.length = 10
robotHead.isVisible = false
group:insert(robotHead)
local staticRobot = display.newImageRect("images/robot-head.png", 195, 180)
staticRobot.x=137
staticRobot.y=130
staticRobot.rotation = 180
group:insert(staticRobot)
end
function demolish2 (event)
rabbitHead.x = 1000
rabbitHead.y = 900
rabbitHead.width = 10
rabbitHead.length = 10
rabbitHead.isVisible = false
group:insert(rabbitHead)
local staticRabbit = display.newImageRect("images/rabbit-head.png", 200, 180)
staticRabbit.x=387
staticRabbit.y=130
staticRabbit.rotation = 180
group:insert(staticRabbit)
end
function demolish3 (event)
dinoHead.x = 1000
dinoHead.y = 900
dinoHead.width = 10
dinoHead.length = 10
dinoHead.isVisible = false
group:insert(dinoHead)
local staticDino = display.newImageRect("images/dino-head.png", 210, 190)
staticDino.x=665
staticDino.y=140
staticDino.rotation = 180
group:insert(staticDino)
end
if (event.target.headtype == 1) then
event.target.width = 220
event.target.height = 200
if event.target.y > 400 then
event.target.isVisible = false
local newHead1 = display.newImageRect("images/robot-head.png",220, 200)
newHead1.x=150
newHead1.y=500
newHead1.rotation = 270
end
addHeadsToGroup()
makeVisible()
demolish2()
demolish3()
end
if (event.target.headtype == 2) then
event.target.width = 340
event.target.height = 240
if event.target.y > 400 then
event.target.isVisible = false
local newHead2 = display.newImageRect("images/rabbit-head.png",340, 240)
newHead2.x=140
newHead2.y=500
newHead2.rotation = 270
end
addHeadsToGroup()
makeVisible()
demolish1()
demolish3()
end
if (event.target.headtype == 3) then
event.target.width = 280
event.target.height = 250
if event.target.y > 400 then
event.target.isVisible = false
local newHead3 = display.newImageRect("images/dino-head.png",280, 250)
newHead3.x=140
newHead3.y=540
newHead3.rotation = 270
end
addHeadsToGroup()
makeVisible()
demolish1()
demolish2()
end
local function nextButtonClicked2 (event)
if event.phase=="ended" then
function sceneChange (event)
composer.gotoScene("mainbuildscene")
print("jererefs")
end
print("egsijegij")
sceneChange()
end
end
nextButton:addEventListener("touch", nextButtonClicked2)
end
end--end of snapTo
robotHead:addEventListener( "touch", snapTo)
rabbitHead:addEventListener( "touch", snapTo)
dinoHead:addEventListener("touch", snapTo)
end -- end
-- "scene:show()"
function scene:show( event )
local sceneGroup = self.view
local phase = event.phase
if ( phase == "will" ) then
-- Called when the scene is still off screen (but is about to come on screen).
elseif ( phase == "did" ) then
-- Called when the scene is now on screen.
-- Insert code here to make the scene come alive.
-- Example: start timers, begin animation, play audio, etc.
end
end
-- "scene:hide()"
function scene:hide( event )
local sceneGroup = self.view
local phase = event.phase
if ( phase == "will" ) then
-- Called when the scene is on screen (but is about to go off screen).
-- Insert code here to "pause" the scene.
-- Example: stop timers, stop animation, stop audio, etc.
elseif ( phase == "did" ) then
-- Called immediately after scene goes off screen.
end
end
-- "scene:destroy()"
function scene:destroy( event )
local sceneGroup = self.view
-- Called prior to the removal of scene's view ("sceneGroup").
-- Insert code here to clean up the scene.
-- Example: remove display objects, save state, etc.
end
---------------------------------------------------------------------------------
-- Listener setup
scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )
-- ------------------------------------------------------------------ -------------
return scene
这是我的mainbuildscene文件，我正在尝试加载的文件。它正在加载，但前一个场景不会消失。
local composer = require( "composer" )
local scene = composer.newScene()
-- -----------------------------------------------------------------------------------------------------------------
-- All code outside of the listener functions will only be executed ONCE unless "composer.removeScene()" is called.
-- -----------------------------------------------------------------------------------------------------------------
-- local forward references should go here
-- -------------------------------------------------------------------------------
-- "scene:create()"
function scene:create( event )
local sceneGroup = self.view
function removeTheScene (event)
print("this is not working, unless it is...?")
composer.removeScene("buildscene2")
end
removeTheScene()
-- Initialize the scene here.
-- Example: add display objects to "sceneGroup", add touch listeners, etc.
local group=display.newGroup()
--
--
local picture=display.newImageRect("images/bee-torso.png", 100, 100)
picture.x=display.contentCenterX
picture.y=display.contentCenterY
group:insert(picture)
end
-- "scene:show()"
function scene:show( event )
local sceneGroup = self.view
local phase = event.phase
if ( phase == "will" ) then
-- Called when the scene is still off screen (but is about to come on screen).
elseif ( phase == "did" ) then
-- Called when the scene is now on screen.
-- Insert code here to make the scene come alive.
-- Example: start timers, begin animation, play audio, etc.
end
end
-- "scene:hide()"
function scene:hide( event )
local sceneGroup = self.view
local phase = event.phase
if ( phase == "will" ) then
-- Called when the scene is on screen (but is about to go off screen).
-- Insert code here to "pause" the scene.
-- Example: stop timers, stop animation, stop audio, etc.
elseif ( phase == "did" ) then
-- Called immediately after scene goes off screen.
end
end
-- "scene:destroy()"
function scene:destroy( event )
local sceneGroup = self.view
-- Called prior to the removal of scene's view ("sceneGroup").
-- Insert code here to clean up the scene.
-- Example: remove display objects, save state, etc.
end
-- -------------------------------------------------------------------------------
-- Listener setup
scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )
-- -------------------------------------------------------------------------------
return scene
请让我知道我做错了什么或给我任何建议。谢谢你的阅读。
答案 0 :(得分：1)
您必须将它们添加到＆＃34; sceneGroup＆＃34;。您正在将所有对象添加到您自己的组中，但应将它们添加到＆＃34; sceneGroup＆＃34;。
在buildscene2.lua中删除以下行：
local group = display.newGroup()
composer.removeScene("thirdscene")
并确保将所有显示对象添加到sceneGroup中，而不是组：
将此group:insert(itemFrame1)更改为此sceneGroup:insert(itemFrame1)，但适用于所有显示对象和所有场景。
如果您计划重复使用场景（即能够前后移动），则不需要使用removeScene，因为Corona会处理属于场景的所有显示对象即，从场景A到场景B时，Corona将自动移开属于场景A 的显示对象>，并将属于场景B的显示对象移动到屏幕。