OAuth Consumer Library for Obj-c that works with many service providers

I'm developing an iOS app that needs to conne开发者_如何学Cct to Twitter, Facebook, Google, Yahoo, Gowalla and Foursquare via OAuth. I have been using http://github.com/dbloete/oauth-objc and that works fine with Twitter (OAuth v.1, basic implementation), but has problems with everything else (it seems that each provider has different standards for signing requests).

I understand that the Java library signpost does a good job of abstracting away the pain of OAuth over multiple service providers. Is there something like this for Objective-C ?

TIA

Check this out: http://code.google.com/p/oauthconsumer/, should be what you are looking for..