Previewing Files Inside Your Xamarin.iOS App

If your app interacts with files, such as email attachments or photos, allowing users to preview those files without leaving your app is a great way to enhance the user's experience. Fortunately, iOS makes adding this feature simple by providing the document interaction controller and the Quick Look preview controller. In this post, you will learn the differences between the two options and how you can implement them in your app. All the code below is available as a sample app on GitHub. Document Interaction Controller The document interaction controller is the more straightforward option to implement. As the name suggests, not only can it be used for previewing, it can also enable other file interactions, such as opening with another app, copying, or printing. To use the document interaction controller, start by creating a class that inherits from UIDocumentInteractionControllerDelegate. While most of the delegate methods are optional, in order to enable previewing you must override the ViewControllerForPreview method.

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Developers,Mobile Dev Blog,iOS