The Core iOS Developer’s Cookbook, Fifth Edition

Creating Document Interaction Controller Instances

Each document interaction controller is specific to a single document file. This file is typically stored in the user’s Documents folder, represented by the fileURL in this snippet:

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dic = [UIDocumentInteractionController     interactionControllerWithURL:fileURL];

You supply a local file URL and present the controller using either the “options” variation (basically the Action menu) or the “Open in...” style. Present the Options menu in one of these two styles from a bar button or an onscreen rectangle:

presentOptionsMenuFromRect:inView:animated:

presentOptionsMenuFromBarButtonItem:animated: ...