Facebook api is upgraded. Hence v2.x api calls are no more valid from april 30th 2015. I'm using SLComposeViewController in my app. Does this changes by Facebook will affect my app? Is it safe to continue using SLComposeViewController? Please do suggest.
Most likely the API Apple uses with Facebook, regardless of what its internal implementation details are, will continue to function, as per the agreement between Apple and Facebook. To be sure, you should contact Apple Developer Relation support and consult with them.