Learn iOS 7 App Development

Chapter     19

Doc, You Meant Storage

If you want your iOS app to store more than a few tidbits of information, you need documents. iOS provides a powerful document framework that brings data storage into the 21^st century. The iOS document (UIDocument) class takes care of, or lets you easily implement, modern features like auto-saving, versioning, and cloud storage. In the process, you’ll finally learn how to archive objects. In this chapter you will:

• Create a custom document object
• Use a document object as your app’s data model
• Learn how to archive and unarchive your data model objects
• Design a document that can be loaded or saved incrementally
• Handle asynchronous document loading
• Manage document changes and auto-saving

You’ll find numerous ...