This Android developer document discusses the activity lifecycle in Android, including starting an activity, pausing and resuming an activity, stopping and restarting an activity, and recreating an activity. It provides guidance for developers on how to properly handle each state change to ensure a smooth user experience as activities transition from active to inactive states.

1. Managing the Activity
Lifecycle
Bible

2. Reference
http://developer.android.com/training/basics/a
ctivity-lifecycle/recreating.html

4. Overview

5. Starting an Activity

6. Pausing and Resuming
Activity

7. Stopping and Restarting an
Activity

8. Recreating an Activity