I'm using the Export Field Contents function to download a big file stored in a container field of an hosted database. Since the download can take a few minutes on a slow connection I would like to display the progress of the operation. Any idea how to do this ?

While it would not give precise progress you can show a layout with a webviewer that uses one of those spinning circles gifs.  Right after the Export Field Contents script step you navigate away from that layout...

While it would not give precise progress you can show a layout with a webviewer that uses one of those spinning circles gifs.  Right after the Export Field Contents script step you navigate away from that layout...

 

 

That's what I'm currently doing but as you said it does not really indicate the progress of the download operation.

 

Since I know the destination file, I was thinking about checking the file size in an ontimer script.

Is there a function that could get the size of a particular file (Get(filesize) is getting the size of the active database so it's not what I need).

P.S. It must work on IOS.

Check out the GetContainerAttribute functions: http://www.filemaker.com/help/13/fmp/en/html/func_ref1.31.15.html

GetContainerAttribute ( ContainerField ; "MD5" ) could help you.

Could you guys give me a hint on how to use the Getcontainerattribute to achieve what I want. I can't figure it out yet.

Thanks