AppleWatchforDevelopers(Apress,2015)

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CHAPTER 9

Branches

When the APEX server receives a submit request from a browser, it performs the

validations and processes associated with that request. Its final task is to choose a target

page to send to the browser. By default, APEX chooses the page that was submitted, but it

is possible to specify another page by creating a branch .

You have been able to get this far through the book without needing to use branches

because of the ease in which multiple regions can be created on a page and the way that

these regions can be conditionally rendered to give the effect of multiple pages. But there

are many situations in which an application will use multiple pages to implement a user

activity. In this chapter, you investigate the use of branches to support these situations.

Separating Input from Output

A common application design technique is to use separate pages for input and output .

A user enters input on a page and clicks a button; the application then branches to

another page that displays the output.

As an example of this technique, consider the two pages shown in Figures 9-1

and 9-2 . The pages have a single region each and work similarly to the single Filter by

Job and Department page of Chapter 6 . In particular, a user begins on the Filter and

Branch page shown in Figure 9-1 , choosing a job and department from the select lists

and then clicking a button. The system then branches to the Filtered Employees page

of Figure 9-2 , which displays a report of employees who have that job and are in that

department.

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pple Watch for Developers: Advice & Techniques from

Five Top Professionals gives you the base-knowledge

and valuable secrets you’ll need for your own projects

from a core team of successful, experienced Apple Watch

app-development experts. You’ll explore elements such

as branding within Watch apps, translating audio data

into visual information, taming complex data, mastering

environment-driven feature sets, and much more.

This book is for developers who already have basic

knowledge of developing with WatchKit and WatchOS2,

and who are now interested in learning how to use them

to create cutting-edge Watch apps. It is written by five

experienced Apple Watch developers who have created

their apps as part of Apple’s beta program, and are now

ready to deconstruct examples to show you how to best

create your own Apple Watch app. This book will bring

your innovative Watch ideas to life!

You’ll learn how to:

•

Accept and handle voice recognition on the

Apple Watch

•

Best send data back and forth from iCloud

•

Perform functions that take very few taps

of a screen

•

Leverage frequency detection

•

Run your apps natively on the Watch

•

Work with App Groups to send and receive data

•

Interface with synced Twitter accounts

Apple Watch for

Developers

Gary Riches Ruben Martinez Jr. Jamie Maison

Matt Klosterman Mark Griffin

Riches Martinez Jr. Maison

Klosterman

Griffin

Apple Watch for Developers

US $ 34.99

Shelve in

Mobile Computing

User level:

Intermediate–Advanced

Advice & Techniques from Five Top Professionals

SOURCE CODE ONLINE

9781484 213391

53499

ISBN 978-1-4842-1339-1

www.it-ebooks.info

Apple Watch for Developers: Advice & Techniques from Five Top Professionals

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