Rob , you are right !!!
I build another code due to my carelessness :blink: ！！！！！！！！！！！！！
Thanks again for your warm-hearted help and bearing with my poor english ~~~~~
Thnk you :D ！！！
Hi~~~ i have problems about insert many images (obtained by display.loadRemoteImage ) in tableview 
I want to download and show images in onRowRender function but when i slip slightly the image in the corresponding line will disappeared or not(i dont know the reason···)
The following code is my code
local filename={} local news = {} news[1] = {} news[1].url = "http://www.1000eyes.com/img/1/1/4/2013031510000004\_2.jpg" news[2] = {} news[2].url = "http://www.1000eyes.com/img/1/1/1/2013031510000002\_2.jpg" news[3] = {} news[3].url = "http://www.1000eyes.com/img/1/1/45/2013031510000010\_2.jpg" news[4] = {} news[4].url = "http://www.1000eyes.com/img/1/1/58/2013031510000009\_2.jpg" local listOptions = { top = 200, left = 0, width = display.contentWidth, height = 600, bgColor = {50,50,100} } --list myList = widget.newTableView( listOptions ) -- onRender listener for the tableView local function onRowRender( event ) local row = event.target local rowGroup = event.view index = event.index filename[index] = event.index local function networkListener( event ) if ( event.isError ) then print ( "Network error - download failed" ) else local img = event.target rowGroup:insert(img) end end display.loadRemoteImage( news[event.index].url, "GET", networkListener, filename[event.index] .. ".png", system.DocumentsDirectory, 0, 0 ) end local mask1 = display.newRect(0,0,display.contentWidth,200) mask1:setFillColor(255,0,0) local mask2 = display.newRect(0,listOptions.top + listOptions.height,display.contentWidth,500) mask2:setFillColor(0,255,0) for i=1, #news do myList:insertRow{ id = i, onRender = onRowRender, height = 300 } weburl = news[i] end
Thanks
Trial build 971
Hi , Rob i am a new user of Corona ~~~
So is there logical or syntax error in code？ :wacko:
Thanks！！！
Are you getting any errors printed in your terminal? I don’t see any obvious errors.
No , no error
And the following picture show the display error in simulator
when i slip slightly between image3 and image4 the image3 are disappeared
You seem to be setting a custom height of 600 px for the table view. If you are not using the full screen, you need to create a mask file and apply it to get things to display right. Try taking out the height = 600 for now and see if changes anything.
But Rob, I modify the code but new error occurred
widget = require "widget" local bg = display.newRect(0,0,display.contentWidth,display.contentHeight) bg:setFillColor(100,100,0) local listOptions = { top = 100, left = 0, width = display.contentWidth, height = 180\*2,--600, bgColor = {50,50,100} } myList = widget.newTableView( listOptions ) -- onRender listener for the tableView local function onRowRender( event ) local row = event.target local rowGroup = event.view local rowW = row.width local rowH = row.height index = event.index local function networkListener( event1 ) if ( event.isError ) then print ( "Network error - download failed" ) else event1.target:setReferencePoint(CenterReferencePoint) event1.target.width = 160 event1.target.height = 160 rowGroup:insert(event1.target) end end display.loadRemoteImage( "http://developer.anscamobile.com/demo/hello.png", "GET", networkListener, "helloCopy"..index..".png", system.TemporaryDirectory, 0, 0 ) end for i=1, 5 do myList:insertRow{ id = i, onRender = onRowRender, height = 180--300 } end --top mask fo list local masktop = display.newRect(0,0,display.contentWidth,listOptions.top) masktop:setFillColor(255,255,255) --bottom mask local maskbottom = display.newRect(0,listOptions.top + listOptions.height,display.contentWidth,180) maskbottom:setFillColor(255,255,255)
When i scroll from top to bottom (or from bottom to top) largely there will be error as below：
Runtime error (line 33)
attempt to call method “insert” (a nil value)
what is line 33?
rowGroup:insert(event1.target) —— this line
when i insert image in rowGroup (the “event.view” )
rowGroup.insert has become nil instead of being a function. This is likely a row that has scrolled off the screen that the downloader is trying to access.
Do this:
[lua]
if rowGroup and rowGroup.insert then
rowGroup:insert(event1.target)
end
[/lua]
and see if that helps
Thanks Rob 
Yes that works
But like you said when downloader trying to access happened after scrolling off the screen , the corresponding image will stay in screen all the time ~~~~~~
then add an “else” clause that removes event1.target.
Unfortunately the error also occurred
I add the following code
if rowGroup and rowGroup.insert then
rowGroup:insert(event1.target)
else
event1.target:removeSelf()
event1.target =nil
end
Rob , you are right !!!
I build another code due to my carelessness :blink: ！！！！！！！！！！！！！
Thanks again for your warm-hearted help and bearing with my poor english ~~~~~
Thnk you :D ！！！