Beginning Android 2

Chapter 26

Using a Content Provider

Any Uri in Android that begins with the content:// scheme represents a resource served up by a content provider. Content providers offer data encapsulation using Uri instances as handles. You neither know nor care where the data represented by the Uri comes from, as long as it is available to you when needed. The data could be stored in a SQLite database, in flat files, or on some far-off server accessed over the Internet.

Given a Uri, you can perform basic CRUD (create, read, update, delete) operations using a content provider. Uri instances can represent either collections or individual pieces of content. Given a collection Uri, you can create new pieces of content via insert operations. Given an instance ...