Thank you very much for the replies it's most helpful...
On Dec 11, 2012, at 4:50 AM, Charles Srstka <cocoa...@charlessoft.com> wrote: > On Dec 10, 2012, at 11:44 AM, Sean McBride <s...@rogue-research.com> wrote: > >> On Mon, 10 Dec 2012 18:33:00 +0800, Rick C. said: >> >>> Hoping for some clarification here...with a Mac app if I set a bunch of >>> extensions in a document type in my info.plist with the role of viewer >>> will it cause my app to "hijack" these extensions and become the default >>> app to open with? This is not my intention I just want my app to be >>> able to open these extensions but I do not want it to become the >>> default. Thanks for the input, >> >> No, it should not 'hijack' like that. If your app is the *only* one that >> recognises those extensions, it probably will become default for those. You >> might want to read up on 'launch services'. > > While that's true in theory, in practice I have found that in certain cases, > it is quite possible for an app to inadvertently steal default app settings > from Apple's built-in apps, particularly if you register for the UTI and the > built-in app is, for some reason, still using filename extensions. If this is > the kind of app that should never become the default, I suggest you do what I > do these days — check LaunchServices on startup, see if you've become the > default app for something you shouldn't have (check for nil too, because this > can end up pointing to you), and change the default back to the > Apple-supplied app if necessary. The alternative is to get a lot of angry > e-mails from users who assume you're deliberately doing something sneaky or > malware-y to take over their system, which is really not the image you want > to present. > > Charles > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
