Give users access to their local or remote documents from within your app.
Use a document browser view controller as the root of your app's view hierarchy. When a user selects a document, you present its view controller modally from your document browser.
The browser automatically gives users the option to share documents using the Share button or a drag-and-drop action. It also provides a standard interface for browsing and managing documents.
You set the type of documents that the user can select when the browser is first created. You can also set the browser's appearance, modify its behaviors, and add custom actions.