android-Content providers

 Content providers are the standard interface that connects data in one process with code running in another process.

得到ContentResolver实体去访问系统数据或者App数据。

Content Provider Basics How to access data in a content provider when the data is organized in tables. Creating a Content Provider How to create your own content provider. Calendar Provider How to access the Calendar Provider that is part of the Android platform. Contacts Provider How to access the Contacts Provider that is part of the Android platform.