ScrollView doesn't work - corona, lua - lua

Question

I'm trying to add object to the ScrollView and this is what happen:
ERROR:Table expected. if this is a function call, you might have used '.' instead of ':
What is that?
code:
This code is works:
scrollView = widget.newScrollView
{ -- ScrollView settings
width = _W,
height = 1760,
horizontalScrollDisabled = true,
hideBackground = true,
friction = 0.988,
x = display.contentCenterX,
y = _H*0.55,
isBounceEnabled = false,
bottomPadding = 260,
hideScrollBar = true
}
for i = 1, #allballs do
Frames[i] = display.newImage( "Frame.png" )
Frames[i].height = 0.12*_H
Frames[i].width = 0.38*_W
Frames[i].ballImage = allballs[i].Image
Frames[i].Purchased = allballs[i].Purchased
Frames[i].Price = allballs[i].Price
Frames[i].Place = i
if (i%2==0) then
Frames[i].y=(i-1)*140
Frames[i].x = 0.27*_W
PositionY = (i-1)*140
PositionX = 0.27*_W
else
Frames[i].y=i*140
Frames[i].x = 0.73*_W
PositionY = i*140
PositionX = 0.73*_W
end
if (allballs[i].Purchased) then
balls[i] = display.newImage( allballs[i].Image )
balls[i].height = 0.15*_W
balls[i].width = 0.15*_W
balls[i].x = PositionX
balls[i].y = PositionY
else
local txtoptions =
{
text = allballs[i].Price,
x = PositionX+0.055*_W,
y = PositionY,
width = 0.23*_W,
font = native.systemFontBold,
fontSize = _W*0.1,
align = "left"
}
balls[i] = display.newText( txtoptions )
end
Frames[i]:setFillColor( 1, 1, 0.4 )
Frames[i]:addEventListener( "tap", sellectball )
scrollView:insert( Frames[i] )
scrollView:insert( balls[i] )
end
Everything works perfectly. But when I add this (between the ***):
for i = 1, #allballs do
Frames[i] = display.newImage( "Frame.png" )
Frames[i].height = 0.12*_H
Frames[i].width = 0.38*_W
Frames[i].ballImage = allballs[i].Image
Frames[i].Purchased = allballs[i].Purchased
Frames[i].Price = allballs[i].Price
Frames[i].Place = i
if (i%2==0) then
Frames[i].y=(i-1)*140
Frames[i].x = 0.27*_W
PositionY = (i-1)*140
PositionX = 0.27*_W
else
Frames[i].y=i*140
Frames[i].x = 0.73*_W
PositionY = i*140
PositionX = 0.73*_W
end
if (allballs[i].Purchased) then
balls[i] = display.newImage( allballs[i].Image )
balls[i].height = 0.15*_W
balls[i].width = 0.15*_W
balls[i].x = PositionX
balls[i].y = PositionY
else
local txtoptions =
{
text = allballs[i].Price,
x = PositionX+0.055*_W,
y = PositionY,
width = 0.23*_W,
font = native.systemFontBold,
fontSize = _W*0.1,
align = "left"
}
balls[i] = display.newText( txtoptions )
***** coin = display.newImage( "coin.png", PositionX-0.07*_W, PositionY)
coin.width = _W*0.05
coin.height = _H*0.05 *******
end
Frames[i]:setFillColor( 1, 1, 0.4 )
Frames[i]:addEventListener( "tap", sellectball )
scrollView:insert( Frames[i] )
scrollView:insert( balls[i] )
******* scrollView:insert( coin ) ********
end
It dosent work...

Answer 1

youre probably calling the method like object.method() instead of object:method()
difference is that : syntax uses automatically this as reference to caller object, with . syntax you have to type it explicitly as first parameter

Answer 2

The error always occurs for the reason like Andoloon pointed out.
but it doesn't seem to be in your ******* code. The problem for the ***** section might be that your 'coin' var is not a list, but it is defined and inserted in the loop. Try move it out of the loop and also remember to use local before the declearation.

Answer 3

I'm guessing that coin.png doesn't exist, or may not be an exact file name match (if you're doing this on a device). Look for a warning in your console log about missing images.