Lua 在Corona SDK中，由于某些原因，我的按钮不会出现在屏幕上

在Corona SDK中，由于某些原因，我的按钮不会出现在屏幕上这是我的代码我缺少了什么

本地编写器=需要（“编写器”）

本地场景=composer.newScene（）

--包括科罗纳的“小部件”库 本地小部件=需要“小部件”

--处理按钮事件的函数 本地功能把手按钮通风口（事件）

结束

---

--转发声明和其他声明 本地播放

--playBtn的“onRelease”事件侦听器 本地函数onPlayBtnRelease（）

结束

--背景 本地天空=display.newImage（“startScreen/sky.png”） sky.x=display.contentWidth/2；sky.y=display.contentHeight/2

--图画 本地preston=display.newImage（“startScreen/PrestonArt.png”） 普雷斯顿：比例（0.4,0.4） preston.x=display.contentWidth/2；preston.y=display.contentHeight/2

--标签 本地learningLabel=display.newImage（“startScreen/Learning.png”） learningLabel:刻度（0.3,0.3） learningLabel.x=506；learningLabel.y=170

本地centerLabel=display.newImage（“startScreen/Center.png”） 中心标签：比例（0.3，0.3） centerLabel.x=506；中心标签y=600

功能场景：创建（事件） 本地场景组=self.view

-- Called when the scene's view does not exist.
-- 
-- INSERT code here to initialize the scene
-- e.g. add display objects to 'sceneGroup', add touch listeners, etc.

-- create a widget button (which will loads levelSelect.lua on release)
playBtn = widget.newButton{
    defaultFile = "startScreen/Play.png",       --the "default" image file
    overFile = "startScreen/Play-Over.png",     --the "over" image file 
    width=240, height=120,
    onRelease = onPlayBtnRelease    -- event listener function
}
playBtn.x = 300; playBtn.y = 695;

-- all display objects must be inserted into group
 sceneGroup:insert( playBtn )

-- Called prior to the removal of scene's "view" (sceneGroup)
-- 
-- INSERT code here to cleanup the scene
-- e.g. remove display objects, remove touch listeners, save state, etc.

if playBtn then
    playBtn:removeSelf()    -- widgets must be manually removed
    playBtn = nil
end

结束

功能场景：演出（活动） 本地场景组=self.view 本地阶段=event.phase

if phase == "will" then
    -- Called when the scene is still off screen and is about to move on screen
elseif phase == "did" then
    -- Called when the scene is now on screen
    -- 
    -- INSERT code here to make the scene come alive
    -- e.g. start timers, begin animation, play audio, etc.
end 

if event.phase == "will" then
    -- Called when the scene is on screen and is about to move off screen
    --
    -- INSERT code here to pause the scene
    -- e.g. stop timers, stop animation, unload sounds, etc.)
elseif phase == "did" then
    -- Called when the scene is now off screen
end 

结束

功能场景：隐藏（事件） 本地场景组=self.view 本地阶段=event.phase

if phase == "will" then
    -- Called when the scene is still off screen and is about to move on screen
elseif phase == "did" then
    -- Called when the scene is now on screen
    -- 
    -- INSERT code here to make the scene come alive
    -- e.g. start timers, begin animation, play audio, etc.
end 

if event.phase == "will" then
    -- Called when the scene is on screen and is about to move off screen
    --
    -- INSERT code here to pause the scene
    -- e.g. stop timers, stop animation, unload sounds, etc.)
elseif phase == "did" then
    -- Called when the scene is now off screen
end 

结束

功能场景：销毁（事件） 本地场景组=self.view

-- Called when the scene's view does not exist.
-- 
-- INSERT code here to initialize the scene
-- e.g. add display objects to 'sceneGroup', add touch listeners, etc.

-- create a widget button (which will loads levelSelect.lua on release)
playBtn = widget.newButton{
    defaultFile = "startScreen/Play.png",       --the "default" image file
    overFile = "startScreen/Play-Over.png",     --the "over" image file 
    width=240, height=120,
    onRelease = onPlayBtnRelease    -- event listener function
}
playBtn.x = 300; playBtn.y = 695;

-- all display objects must be inserted into group
 sceneGroup:insert( playBtn )

-- Called prior to the removal of scene's "view" (sceneGroup)
-- 
-- INSERT code here to cleanup the scene
-- e.g. remove display objects, remove touch listeners, save state, etc.

if playBtn then
    playBtn:removeSelf()    -- widgets must be manually removed
    playBtn = nil
end

结束

---

--侦听器设置 场景：addEventListener（“创建”，场景） 场景：addEventListener（“显示”，场景） 场景：addEventListener（“隐藏”，场景） 场景：addEventListener（“销毁”，场景）

---

返回场景

我的猜测是

评论说转到level1.lua，但它试图转到levelSelect

不要在文件名中使用大写字母（一般）

尝试删除“褪色”，500看看它的工作

在levelselect.lua中，您未返回场景或未处理场景：创建

请提供更多代码和信息