Example of sharing a PDF in iOS 8

ShareExample

    NSArray* itemsToShare = [NSArray arrayWithObjects:pdfData, nil];
    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:itemsToShare applicationActivities:nil];
    activityVC.excludedActivityTypes = @[UIActivityTypeCopyToPasteboard]; //or whichever you don't need
    
    activityVC.popoverPresentationController.sourceView = self.view;
    
    [self presentViewController:activityVC animated:YES completion:nil];