Android ContentProvider Learning

1. ContentProvider provides a unified interface for providing bit storage or data acquisition.

2. Using ContentProvider, you can share data between different applications.

3. Android provides contentprovider for some common data (including audio, video, pictures, contacts, etc.).

Functions provided by the ContentProvider

1. Query (): inquiry

2, insert (): Insert

3. Update (): Updated

4. Delete (): delete

5, GetType (): The type of data obtained

6, OnCreate (); callback function at creation time

The process of implementing ContentProvider:

1. Define a Content_uri constant

2, define a class, Inherit ContentProvider

3. Implement the query, insert, UPDATE, Delete, GetType, and OnCreate methods.

4, in the androidminafest.xml of the Declaration.

Android ContentProvider Learning