Android class library Introduction

Android class library Introduction

The android SDK of gphone contains many class libraries:

Android. util involves the underlying auxiliary class library of the system.

Android. OS provides system services, message transmission, and IPC pipelines.

Android. Graphics gphone graphics library, including text display, input and output, and text style

Android. database contains the underlying API operation database (SQLite)

Android. content provides various types of data transmission, services, and resource management.

Android. view provides a basic user interface framework

Android. widgets display various controls, such as buttons, list boxes, and progress bars.

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

Android. provider various definition variable standards

Android. telephony provides API Interaction Related to dialing.

Android. WebKit gphone default browser operation interface