corona composer background next scene not showing - lua

Question

I have a lot of difficulties with composer...it's not so easy!
My previous scene is "game" (game.lua) everything is ok
When i go to my scene "recolt" with this snippet inside my game lua :
local function goTo()
print("gotoscene")
composer.gotoScene( "recolt", { time = 1000, effect = "fromRight", params = params } )
end
timer.performWithDelay( 1000, goTo )
:The problem is that i see my previous scene behind my recolt scene and i can't see my background but i see my circle who's moving ??? however my sceneGroup is correct :
sceneGroup:insert(background,circle)
When i do :
sceneGroup:insert(circle,background)
I see my background who hide my previous scene and my circle. > behavior expected
What's wrong? i would like to see my background and my circle in y "recolt" scene. Could you help me ? Thanks a lot...Below the snippet "recolt.lua".
--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

Answer 1

You need to check the docs: object:insert()
The problem is you can only add 1 object into the scene with insert() function, so you only need to change
sceneGroup:insert(background,circle)
to
sceneGroup:insert(background)
sceneGroup:insert(circle)
The order matters, the first object you create go back in the scene.