Introduction to common android class library packages

 

In the android class library, various packages are written as Android. *. The important packages are described as follows:

Android. app: provides high-level program models and basic runtime environments.

Android. Content: contains various classes for accessing and publishing device data.

Android. Database: browses and operates databases through the content provider.

Android. Graphics: The underlying graphics library, including canvas, Color Filtering, vertices, and rectangles, which can be directly drawn to the screen.

Android. Location: class for locating and related services.

Android. Media: Provides media interfaces for managing multiple types of audio and video.

Android.net: class that provides network access assistance, exceeding the normal java.net. * interface.

Android. OS: Provides system services, message transmission, and IPC Mechanisms.

Android. OpenGL: Provides OpenGL tools for 3D acceleration.

Android. provider: provides a class to access the content provider of Android.

Android. Telephony: provides API Interaction Related to dialing.

Android. View: provides a basic user interface framework.

Android. util: a tool-based method, such as time and date operations.

Android. WebKit: default browser operation interface.

Android. Widget: contains various UI elements (mostly visible) for use on the application screen.

 

For more information about the class library package, see:

Docs in the SDK-> reference-> packages.html

Or online page:

Http://developer.android.com.nyud.net/reference/packages.html