How to use downloaded images for buttons?

Getting Started Newbie Questions
#1

I am trying to list images of restaurants in a scrollview but make them buttons. I am downloading the list with json and then loop through the results. I have the remote image file name so I can download it. But how do I make it download each one as the list is shown?

Here is the code i have in my listener when the data is retrieved from my web service / sql server.

local function networkListener( event ) local ct = 1 data[ct] = {} if ( event.isError ) then print( "Network error!") native.showAlert( "Error", "A network error has occured. Please make sure you have a network connection on your device and try again.", { "OK" } ) else myNewData = event.response local myTable = json.decode(myNewData) Results = #myTable.RestList for i=1,Results do local RestNo2 = myTable.RestList[i].RestNo local Name2 = myTable.RestList[i].Name local Address2 = myTable.RestList[i].Address local City2 = myTable.RestList[i].City local State2 = myTable.RestList[i].State local Zip2 = myTable.RestList[i].Zip local CityStateZip2 = RestList.Apartment[i].CityStateZip local Latitude2 = myTable.RestList[i].Latitude local Longitude2 = myTable.RestList[i].Longitude local Deliver2 = myTable.RestList[i].Deliver local Picture2 = myTable.RestList[i].Picture local CatName2 = myTable.RestList[i].CatName local PWidth2 = myTable.RestList[i].PWidth local PHeight2 = myTable.RestList[i].PHeight data[ct] = {} data[ct].RestNo = RestNo2 data[ct].Name = Name2 data[ct].Address = Address2 data[ct].City = City2 data[ct].State = State2 data[ct].Zip = Zip2 data[ct].CityStateZip = CityStateZip2 data[ct].Latitude = Latitude2 data[ct].Longitude = Longitude2 data[ct].Deliver = Deliver2 data[ct].Picture = Picture2 data[ct].CatName = CatName2 data[ct].PWidth = PWidth2 data[ct].PHeight = PHeight2 ct = ct + 1 end --Show restaurant pictures with links in listview local Col = 1 for i=1,#data do imgRest[i] = widget.newButton { width = data[i].PWidth, height = data[i].PHeight, defaultFile = (picture file goes here), overFile = (picture file goes here), label = "", onEvent = btnRestButtonEvent } imgRest[i].anchorX = 0 imgRest[i].anchorY = 0 imgRest[i].y = Top8 imgRest[i].x = 5 imgRest[i].id = (picture file goes here) scrollView:insert( imgRest[i] ) CT1 = CT1 + 1 Top8 = Top8 + data[i].PHeight end if ct == 1 then native.showAlert( " ", "There are no restaurants to show for the current location..", { "OK" } ) end end

Thanks,

Warren

#2

I solved this. What I did is looped through the json results and loaded the data in a table. I then looped through that table and downloaded each image with network.download and added the image button to the scrollView on the listener event and then downloaded the next and so on. I am going to add code to check and see if the file was downloaded already and use it to save time.

Warren

#3

I solved this. What I did is looped through the json results and loaded the data in a table. I then looped through that table and downloaded each image with network.download and added the image button to the scrollView on the listener event and then downloaded the next and so on. I am going to add code to check and see if the file was downloaded already and use it to save time.

Warren