The Application Framework is a set of services that collectively form the environment in which Android applications run and are managed. This framework implements the concept that Android applications are constructed from reusable, interchangeable and replaceable components. This concept is taken a step further in that an application is also able to publish its capabilities along with any corresponding data so that they can be found and reused by other applications.
The Android framework includes the following key services:
•Activity Manager – Controls all aspects of the application lifecycle and activity stack.
•Content Providers – Allows applications to publish and share data with other applications.
•Resource Manager – Provides access to non-code embedded resources such as strings, color settings and user interface layouts.
•Notifications Manager – Allows applications to display alerts...
