Thanks Ken! I went round and round with this, but I think I have it now.
I only had to make one change. That was value of idx was including the image url, so that it contained (2, http://theimageurl.jpg) I just asked it to put word 1 of idx into idx and that seemed to fix that issue. I also added a +1 to the end of the if idx<= statement as it was skipping the last URL in the list. Thanks Again! John Patten SUSD On Feb 22, 2012, at 2:34 PM, Ken Corey wrote: > On 22/02/2012 22:21, John Patten wrote: >> I've tried both Ken and Gerry's suggestions for downloading images in the >> background via a URL. >> I attempted to combine both Ken and Gerry's examples, in order to prevent >> the error messages I was receiving in Ken's first example. However, it is >> not working...yet. > > I think the problem is that "libUrlDownloadToFile" downloads a file > asynchronously. That is to say that it doesn't hang about and wait for the > transfer to happen. Therefore you get all of your image downloading > requested at the same time! > > If you put a callbackMessage after libUrlDownloadToFile, it will get called > when the download is finished: > > on mouseUp > send "downloadImage 1" to me in 0 milliseconds > end mouseUp > > on downloadImage idx > if idx<= the number of lines in cd fld "imageURLs" then > set the itemDel to tab > put item 1 of line idx of cd fld "imageURLs" into tURL > set the itemDel to "/" > put the last item of tURL into tImagename > put specialfolderpath("Documents")&"/WhaleImages/" before tImagename > > libUrlDownloadToFile tURL, tImagename, "downloadComplete "&(idx+1) > end if > end downloadImage > > on downloadComplete idx > send "downloadImage "&idx to me in 0 milliseconds > end downloadComplete > > That way, you only have a single download happening at any one time again. > > -Ken > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
