Note: This tutorial requires at least Xcode 10, Swift 4.2, and iOS 12. Introduction It used to be the case that, if your app used documents, you needed to create your own document browser UI and logic. This was a lot of work. With iOS 11, that all changed. It's no longer impossible to share documents from your app's own sandbox with other apps on the same device. iOS 11 introduced both the Files app and a new public API called UIDocumentBrowserViewController that provides most of the functions that document-based apps use. UIDocumentBrowserViewController provides developers with several features: A system UI that all users will be able to recognize and use. No need to write your own UI and associated logic to deal with file management locally or on iCloud. Simple sharing of documents globally across the user's account. Fewer bugs because you are writing less code. And via UIDocument: File locking and unlocking. Conflict resolution. In this tutorial, you will cover creating a simple UIDocument subclass implementation, using UIDocumentBrowserViewController in your document-based app.


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