Runtime error with corona app - runtime-error

Question

I made a very simple app with a some simple functions and it is working very well on the corona simulator as in the Screen shot but when i built an APK file i got the following error when i opened the app on my phone "c:\Users\Moamen\Documents\Corona projects\Learning\main.lua:36:attempt to index global 'an'(a nil value) "
This is the app error:
Photo for the app on corona simulator:
and this is the Working folder
code:
-----------------------------------------------------------------------------------------
--
-- main.lua
--
-----------------------------------------------------------------------------------------
-- Your code here
sound = audio.loadStream( "test2.mp3" )
ssound = audio.loadSound( "test.wav")
function com( )
audio.play( ssound )
audio.setVolume( .5)
--body
end
local options={duration = 10000 , onComplete = com }
audio.play( sound )
audio.setVolume( .25 )
group = display.newGroup()
function Puse( event)
if ("began" == event.phase) then
audio.pause()
end
-- body
end
function Resume( event)
if ("began" == event.phase) then
audio.resume( )
end
--body
end
--local widget = require("widget")
--widget.setTheme( "widget_theme_ios" )
an = display.newImage( "bg.JPG" ,150,250 )
an.xScale = .3
an.yScale = .7
--aa = display.newImageRect("bg2.JPG",100,100)
--aa.x=160
--aa.y=230
text1 =display.newText({text= "TechForm" , x=455 , y= 1 , fontSize=("60")})
transition.to( text1, {x=150,y=1,time =2000} )
text2=display.newText({text= "The android app that made by " , x=455 , y= 70 , fontSize=("20")})
transition.to( text2, {x=160,y=70,time =4000} )
text3=display.newText({text= "Moamen Hassaballah " , x=460 , y= 120 , fontSize=("30")})
transition.to( text3, {x=160,y=120,time =5000} )
--display.newImage("ando.png",160 ,350)
--display.newCircle( 300, 300, 10 )
rect = display.newRect( 170, 475, 400, 100 )
rect:setFillColor(.117,.244,.244)
ttext=display.newText({text="Thanks for using our app", x=150, y=470 ,fontSize=25} )
--rect:removeSelf( )
function Touching( event)
if ("began" == event.phase) then
x=math.random( .1,.9 )
y=math.random( .1,.9 )
z=math.random( .1,.9 )
rect:setFillColor( x,y,z )
end
end
rect2=display.newRect( 70, 387, 125, 23 )
rect:addEventListener( "touch", Touching )
button = display.newImage("button.png",60,334)
button.xScale=.4
button.yScale=.4
function ch_color( event)
if ("began" == event.phase) then
x=math.random( .1,.9 )
y=math.random( .1,.9 )
z=math.random( .1,.9 )
text3:setFillColor( x,y,z )
end
end
rect2:addEventListener( "touch", ch_color )
local widget = require("widget")
widget.setTheme( "widget_theme_ios" )
function login(event)
if ("began" == event.phase) then
rect:removeSelf( )
function login2( event)
if ("began" == event.phase) then
rect = display.newRect( 170, 475, 400, 100 )
rect:setFillColor(.117,.244,.244)
rect:addEventListener( "touch", Touching )
ttext:toFront( )
btn = widget.newButton{top=365,left=150 , label="Login" , onEvent=login}
btn.xScale=.8
btn.yScale=.7
end
-- body
end
btn = widget.newButton{top=365,left=150 , label="Login" , onEvent=login2}
btn.xScale=.8
btn.yScale=.7
end
-- body
end
local btn = widget.newButton{top=365,left=150 , label="Login" , onEvent=login}
btn.xScale=.8
btn.yScale=.7
local bb = widget.newButton{ label = "Puse" , top = 250 , left = 150 ,onEvent=Puse}
bb.xScale=.8
bb.yScale=.7
local bb2 = widget.newButton{ label = "Resume" , top = 250 , left = 2 ,onEvent=Resume }
bb2.xScale=.8
bb2.yScale=.7
function handleTabBarEvent(event)
if event.phase == "press" then
print ("Tab " .. event.target._id .. " is selected")
transition.to( cc, {x= -160 , y=220 , time=200} )
end
end
cc = display.newText( {text = "Shows Tap is selected" , x=-160 , y=220, fontSize = 30} )
function shows(event )
if (event.phase=="press") then
print( "shows tap is selected" )
transition.to( cc, {x= 160 , y=220 , time=400} )
end
-- body
end
-- Configure the tab buttons to appear within the bar
local progressView = widget.newProgressView
{
left = 10,
top = 320,
width = 300,
isAnimated = true
}
-- Set the progress to 50%
function progress_to_0(event)
if event.phase=="press"then
xx = math.random( 0.1 , 0.9 )
progressView:setProgress( 0.1 )
transition.to( cc, {x= -160 , y=220 , time=200} )
end
end
function progress_to_25(event)
if event.phase=="press"then
progressView:setProgress( 0.25 )
transition.to( cc, {x= -160 , y=220 , time=200} )
end
end
function progress_to_75(event)
if event.phase=="press"then
progressView:setProgress( 0.75 )
transition.to( cc, {x= -160 , y=220 , time=200} )
end
end
function progress_to_1(event)
if event.phase=="press"then
progressView:setProgress( 1 )
print( "shows tap is selected" )
transition.to( cc, {x= 160 , y=220 , time=400} )
end
end
local tabButtons = {
{
label = "Tab1", -- Text of the label
selected = true, -- Default selection
size = 16, -- size of the font in the Tab
onPress = progress_to_0 -- listener attached to the Tab
},
{
label = "Tab2", -- Text of the label
size = 16, -- size of the font in the Tab
onPress = progress_to_25 -- listener attached to the Tab
},
{
label = "Tab3", -- Text of the label
size = 16, -- size of the font in the Tab
onPress = progress_to_75
-- listener attached to the Tab
},{label="Shows" , size=16, onPress=progress_to_1 }
}
-- Create the Tabs object
local testTabs = widget.newTabBar
{
top = -45,
width = display.contentWidth,
height = 70,
buttons = tabButtons,
}

Answer 1

Android is case sensitive but Windows is (generally) case insensitive. So replace bg.JPG with bg.jpg and rename file accordingly.
Note:
Use small letters for file names,
Use local variables where possible e.g. local an = display.newImage( "bg.jpg" ,150,250 )