Question

I am developing a Cocoa application, and it requires 10.7+. So, I will gladly use the new shiny APIs.

What I would like to do is download some MP3s and probably some XML data from our back-end server, and store it on the user’s Mac. I would much like to store it within the “application.app” directory, alongside the initial resources that are bundled with the application.

Can I do that? Store files within the application.app?

If not, where is the preferred directory to store the additional data?

NOTE: It must support apple’s new sandboxing thingie.

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(Is this a good idea: reference)

// save our buddy list to the user's home directory/Library/Preferences.
    [prefs writeToFile:[@"~/Library/Preferences/MiniMessage Client.plist"
                    stringByExpandingTildeInPath] atomically: TRUE];

Answer 1

Here’s Apple’s App Sandbox Design Guide and read the “Container Directories and File System Access”. The directory “~/Library/Container/com.yourcompany.yourappname/” and it’s subdirectories will be your Apps only, so seems to me that that directory would be your best place of saving the things you’ll be downloading from the web.