UIDocument Demystified – A Step-by-step Guide on Local and iCloud Document Storage

Do you have an excellent idea for an iOS app, but you are unsure if it should store the user-generated data locally or in iCloud? Great news! The UIDocument API lets you do both.

The purpose of this book is to show you step-by-step how to use the UIDocument API and the iCloud document service to store documents (and media files) locally or in iCloud.

The book comes with an iOS app, which you’ll use to implement local document operations, media operations, and iCloud document operations. Here is a QuickTime movie that demonstrates a few features of the app on the iPad device.