Merge "doc change: Fixed typo in Activity class reference." into mnc-docs

 * independently of the activity lifecycle itself.  An example may be a camera

 * application that allows you to upload a picture to a web site.  The upload

 * may take a long time, and the application should allow the user to leave

 * the application will it is executing.  To accomplish this, your Activity

 * the application while it is executing.  To accomplish this, your Activity

 * should start a {@link Service} in which the upload takes place.  This allows

 * the system to properly prioritize your process (considering it to be more

 * important than other non-visible applications) for the duration of the