A Note from the Author and from O'Reilly Media about what this book
Palm webOS is a brand new platform and represents a very different type of
operating system where the web runtime is used as the basis for the UI and
Application model. Palm and O'Reilly felt that it was important to have a
book available to help developers get a basic understanding of the new Palm
platform at the time that the SDK was released; this timing played a major
role in the content and structure of the book.
Ideally this book would have been a complete reference of the new platform
but that wasn't possible since the content was written at the same time as
the software SDK was being developed by the Palm engineering team.
does provide a complete overview of Palm webOS, a thorough description of
the application model and gives details on many key design concepts. There
are descriptions and examples of UI widgets, services, storage,
notifications, dashboards and background applications, serving as a great
introduction but not as a definitive source.
The book uses a simple News reader application to illustrate the technical
descriptions but the examples are not intended to serve as a cookbook
Experienced developers should be able to use the examples to build
up a working application chapter by chapter but others may not find the
loose descriptions adequate for recreating the application unaided. Over
time, these different needs will be filled by other books, but in the
meantime we hope that this book will serve a valuable role introducing
developers to webOS and giving them a way of getting started with webOS
A second printing of the book will update any original coverage obsoleted by
subsequent Mojo SDK builds.
For owners of the original printing of the book,
all of these updates are posted on the "View/Submit Errata" link (please see
left-hand column of this web page).
Thanks for understanding that book publishing and coverage of rapidly moving
technologies can sometimes be an inexact science; we knew there'd be a need
for a book such as Palm webOS: The Insider's Guide to Developing
certainly no better person to write that book that Mitch Allen; that said,
we understand that because it is such a new operating system and SDK, there
would (and will continue to be) changes that at best can't be documented and
explored until new printings of the books are released.
In the meantime we
will be diligent in posting updates to this book's O'Reilly Media catalog
- Get a thorough overview of the webOS platform and architecture
- Understand the critical concepts for application design: what separates webOS from other web and mobile platforms
- Learn the details of Mojo's development tools and SDK for building and testing mobile applications
- Examine best practices, important considerations, and guiding principles for developing with webOS and the Mojo framework