Android loader-use the loader in the Application

This section describes the Android appProgramHow to Use the loader, the application using the loader usually includes the following content:

1. an activity or fragment;

2. A loadermanager instance;

3. A cursorloader object used to load data stored through contentprovider. It can also be a loader or asynctaskloader subclass that you implement to load other types of data.

4. An implementation related to loadermanager. loadercallbacks. This is where you create a new loader and manage reference of the existing loader;

5. A method for displaying loader data, such as a simplecursoradapter;

6. A data source, such as the contentprovider object used by cursorloader.