问针对ios 5和ios 6的Facebook集成

EN

#import<Social/Social.h>

- (void)buttonAction:(id)sender
{
    //Check for availability of Facebook integration and use its view controller to share on Facebook
    if(NSClassFromString(@"SLComposeViewController") != nil) {
        SLComposeViewController *fbController=[SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
        if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) {
            //Use fbController for sharing
        } else {
            // Service not available
        }
    }
    else{
        // Use your code for sharing on iOS versions other than 6.x to authenticate and get an access token.
    }
}