Corona Composer 背景下一个场景没有显示。

我在使用 composer 时遇到了很多困难... 它并不容易！

我之前的场景是 "game"（game.lua），一切都很好。 当我在我的 game.lua 中有以下代码片段时，我进入我的场景 "recolt":

local function goTo()
    print("gotoscene")
    composer.gotoScene( "recolt", { time = 1000, effect = "fromRight", params = params } )
end

timer.performWithDelay( 1000, goTo ) :问题是我在我的 recolt 场景后面看到了前一个场景，我看不到我的背景，但我看到了我正在移动的圆圈??? 但是我的 sceneGroup 是正确的:

sceneGroup:insert(background,circle)

当我这样做：

sceneGroup:insert(circle,background)

我可以看到我的背景，它遮盖了我的前一个场景和圆圈。> 期望的行为

错了吗？我想在 y "recolt" 场景中看到我的背景和圆圈。你能帮我吗？非常感谢...以下是 "recolt.lua" 的代码片段。

--recolt.lua
local composer = require( "composer" )
local scene = composer.newScene()

function scene:create( event )
    local sceneGroup = self.view
    params = event.params

        local background=display.newImageRect("back02.png",display.contentWidth*.5,d        isplay.contentHeight*.5,320,480)
        background.x,background.y=display.contentWidth*.5,display.contentHeight*.5
        background.xScale,background.yScale=2,2
        background.alpha=1

        local circle = display.newCircle(120,100,100)

    sceneGroup:insert(background,circle)

    timeT=150

    local function tr4()
      transition.to(circle,{time=timeT,x=200,y=300,alpha=1,transition=easing.linear,      xScale=1,yScale=1})
    end

    local function tr3()
      transition.to(circle,{time=200,x=100,y=300,transition=easing.linear, xScale=.2      ,yScale=.5,onComplete=tr4})
    end

    local function tr2()
      transition.to(circle,{time=200,x=200,y=295,transition=easing.linear, xScale=.2      ,yScale=.2,alpha=.2,onComplete=tr3})
    end

    local function tr1()
      transition.to(circle,{time=timeT,x=300,y=300,transition=easing.linear, xScale=      .5,yScale=.5,onComplete=tr2})
    end

    timer.performWithDelay(700,tr1,-1)

end

function scene:show( event )
    local sceneGroup = self.view
    params = event.params

    if event.phase == "did" then
        --physics.start()
    end
end

function scene:hide( event )
    local sceneGroup = self.view
    if event.phase == "will" then
        --
        -- Remove enterFrame listeners here
        --
        --physics.stop()
    end
end

function scene:destroy( event )
    local sceneGroup = self.view
end

---------------------------------------------------------------------------------
-- END OF YOUR IMPLEMENTATION
---------------------------------------------------------------------------------
scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )
return scene