added in API level 1
android.content
Contains classes for accessing and publishing data on a device. It includes three main categories of APIs:
Content sharing (android.content)
For sharing content between application components. The most important classes are:
ContentProvider and ContentResolver for managing and publishing persistent data associated with an application.
Intent and IntentFilter, for delivering structured messages between different application components—allowing components to initiate other components and return results.
Package management (android.content.pm)
For accessing information about an Android package (an .apk), including information about its activities, permissions, services, signatures, and providers. The most important class for accessing this information is PackageManager.
Resource management (android.content.res)
For retrieving resource data associated with an application, such as strings, drawables, media, and device configuration details. The most important class for accessing this data is Resources.
android.content
包含用于在设备上访问和发布数据的类。它包括三个主要类别的API：
内容分享（android.content）
用于在应用程序组件之间共享内 最重要的课程是：
ContentProvider以及ContentResolver 管理和发布与应用程序关联的持久数据。
Intent并且IntentFilter，用于在不同的应用程序组件之间传递结构化消息 - 允许组件启动其他组件并返回结果。
包管理（android.content.pm）
用于访问有关Android软件包（an .apk）的信息，包括有关其活动，权限，服务，签名和提供程序的信息。访问此信息最重要的类是PackageManager。
资源管理（android.content.res）
用于检索与应用程序关联的资源数据，例如字符串，drawable，媒体和设备配置详细信息。访问此数据最重要的类是Resources。