Álvaro Ramírez

• UIActivityViewController.
  • Use completionWithItemsHandler on iOS 8.
  • Sample:

NSString *title = @"Sharing on iOS bookmarks.";
NSURL *url = [NSURL URLWithString:@"http://xenodium.com/#sharing-on-ios"];
UIImage *image = [UIImage imageNamed:@"beautiful-image"];

UIActivityViewController *controller =
  [[UIActivityViewController alloc]
    initWithActivityItems:@[title, url, image]
    applicationActivities:nil];

// self being a UIViewController.
[self presentViewController:controller animated:YES completion:nil];

• Sharing through Mail app on simulator isn't supported.

viewServiceDidTerminateWithError: Error Domain=_UIViewServiceInterfaceErrorDomain Code=3 "The operation couldn’t be completed. (_UIViewServiceInterfaceErrorDomain error 3.)" UserInfo=… {Message=Service Connection Interrupted}

• Sharing through Mail app on device is OK.
• WWDC 2014 Creating Extensions for iOS and OSX, Part 1.
  • Share Extensions talk by Guy Fullerton.
    • Usually view controllers in addition to plist.
    • CFBundleDisplayName.
    • NSExtendion.
      • NSExtensionAttributes.
        • NSExtensionActivationRule.
  • SLComposeServiceViewController.
  • UIActivityViewController.
• WWDC 2014 Creating Extensions for iOS and OSX, Part 2.
• Want to a share URL to App Store? See Technical Q&A 1633.