Solar2d运行时错误-小部件库和点击栏

如何解决Solar2d运行时错误-小部件库和点击栏

我正在使用Solar2d引擎（以前为CoronaSDK），所以它是Lua语言。问题是我正在使用Solar2d为制表栏应用程序提供的预制模板。这是main.lua（我只更改了按钮的标签）

display.setStatusBar( display.HiddenStatusBar )

-- include Corona's "widget" library
local widget = require "widget"
local composer = require "composer"

-- event listeners for tab buttons:
local function onFirstView( event )
    composer.gotoScene( "view1" )
end

local function onSecondView( event )
    composer.gotoScene( "view2" )
end


-- create a tabBar widget with two buttons at the bottom of the screen

-- table to setup buttons
local tabButtons = {
    { label="Calculator",defaultFile="button1.png",overFile="button1-down.png",width = 32,height = 32,onPress=onFirstView,selected=true },{ label="Curiosities",defaultFile="button2.png",overFile="button2-down.png",onPress=onSecondView },}

-- create the actual tabBar widget
local tabBar = widget.newTabBar{
    top = display.contentHeight - 7,-- 50 is default height for tabBar widget
    buttons = tabButtons
}

onFirstView()   -- invoke first tab button's onPress event manually

简而言之：我们创建了一个视图，该视图的底部带有一个选项卡栏，带有两个按钮，可将您发送到“ view1”（view1.lua）或“ view2”（view2.lua）。 预制模板还包括白色背景和两个视图中的一些文本。 照原样，代码可以正常工作，但是当我将代码插入到view1.lua并替换旧的本地语言（背景和文本）时，出现此错误。 这是view1.lua

local composer = require( "composer" )
local scene = composer.newScene()
local widget = require "widget"

function scene:create( event )
    local sceneGroup = 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.

display.setDefault( "background",0.1,0.2,0.8)


local numero
local result

local function textListener( event )
    if ( event.phase == "ended" or event.phase == "submitted") then
        local num1 = tonumber(numero.text)
        if (num1) then
            result.text = num1 * 343.1
            result.size = 60
        end
    end
end

numero = native.newTextField( display.contentCenterX,150,170,45)
numero:addEventListener( "userInput",textListener )
numero.inputType = "decimal"

result = display.newText( "How many seconds?",display.contentCenterX,320,native.SystemFont)
result:setFillColor(180,180,0)
result.size = 32

local logo = display.newImageRect( "img/fulmenLogo1.png",60,60)
logo.x = 290
logo.y = -14

    
    -- all objects must be added to group (e.g. self.view)
    sceneGroup:insert( numero )
    sceneGroup:insert( result )
    sceneGroup:insert( logo )
    
end

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

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

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

---------------------------------------------------------------------------------

-- Listener setup
scene:addEventListener( "create",scene )
scene:addEventListener( "show",scene )
scene:addEventListener( "hide",scene )
scene:addEventListener( "destroy",scene )

-----------------------------------------------------------------------------------------

return scene

Corona（实际上是Solar2d）模拟器显示的错误如下：

D：\ a \ corona \ corona \ subrepos \ widget \ widgetLibrary \ widget_tabbar.lua：453：尝试索引字段'？' （零值） 堆栈回溯：

D：\ a \ corona \ corona \ subrepos \ widget \ widgetLibrary \ widget_tabbar.lua：453：在函数'initWithImageSheet'中

D：\ a \ corona \ corona \ subrepos \ widget \ widgetLibrary \ widget_tabbar.lua：849：在函数中 （尾注）：？

D：\ a \ corona \ corona \ subrepos \ widget \ widgetLibrary \ widget_tabbar.lua：135：在函数中 （尾叫）：？ main.lua：28：在主要区块中