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Application Platform Overview for Windows
Phone
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Windows Phone
December 15, 2011
The
Windows
Phone Application Platform enables developer
s to create engaging consumer
experiences running on a Windows®
Phone
. It is
built upon existing Microsoft® tools and
technologies such as
Visual Studio,
Expression Blend®,
Silverlight®, and
the XNA
Framework
.
Developers already familiar with those
technologies and their related tools will be able to create
new applications for Windows
Phone without a steep learning curve. This topic includes the
following sections:
Overview
Architecture
o
Runtimes
o
Tools
o
C
loud Services
o
Portal Services
The Application Development Lifecycle
Overview
The Windows
Phone Application Platform provides
two frameworks for developing
applications:
1.
The
Silverlight framework for event
-
driven, XAML
-
based
application development
that allows developers to develop creative markup
-
based user experiences and rich media
applications.
2.
The
XNA
Framework for loop
-
based games
that enables immersive and fun gaming
and entertainment experiences.
With
Windows
Phone
7.5
, you can now
combine Silverlight and the XNA Framework
into a
single application.
The Windows
Phone Application Platform helps developers to create applications by providing:
A familiar and inexpensive toolset.
A cohesive and well
-
designed managed API set
.
An
isolated sandbox for each application
.
Runtime services on devices that can be used
to access web services in the cloud
, such
as
Xbox LIVE®, Windows Azure
,
location
, and
notification services
.
Access to third
-
party Windows Communication Foundation (W
CF)
and
Representational State Transfer (REST) services
across the
web is also supported
.
The
Windows
Phone Marketplace
to
distribute their application
.
The
Windows
Phone Application Platform
, like most platforms, will continue to evolve over
time, but its
goal will always be to deliver:
Richer applications, developed for a highly standardized platform
.
Support for personal and connected consumer data
across multiple devices.
A
robust developer portal
and
application marketplace for complete end
-
to
-
end
lif
ecycle management.
Powerful
and
productive development tools.
The Windows
Phone Application Platform is designed to support the multi
-
screen world that
consumers live in.
Consumers today use a variety of screens and devices, all equally important and all tied together
by the cloud, which connects the relevant information together, providing users with the
information they need as they move from device to device. Common user
experiences make it
easy to move between devices, and a common development platform makes it easy to develop
applications for all the device types.
Back to Top
Architecture
The Windows
Phone Application Platform architecture is made up of four main components.
1.
Runtimes
–
Silverlight
and the
XNA
Framework
, along with Windows
Phone
–
specific
features, combine to
provide a mature environment
on which to
build secure,
graphically rich applications.
2.
Tools
–
Visual Studio and Expression Blend
, and their
related tools and
documentation, create a complete
developer experience
for quickly
creating,
debugging, deploying, and updating applications.
3.
Cloud Services
–
Windows Azure, Xbox LIVE Services, Notifications services, and
Location services
, along with a
variety of other web services
, allow
developers to
s
hare data across the cloud
and
benefits consumers by providing a seamless
experience
across whatever device they are using.
Connections to third
-
party web
services are also fully supported.
4.
Portal Services
–
The
Windows
Phone Marketplace
provide
robust ser
vices
that allow
developers
to register, certify
, and
market their applications
.
Back to Top
Runtimes
With Silverlight and the XNA
Framework, all development is done in managed code, in a
protected sandbox allowing for the rapid development of safe and secure applications.
Applications written for Silverlight
or the
XNA
Framework
today will run on
Windows
Phone with only a minor number of adjustments, such as for screen size or for
device
-
specific features
.
The
two frameworks, along with Windows
Phone
–
specific components and the Common Base
Class Library provide a substantial number of components for develo
pers to construct
applications on.
Silverlight
-
Silverlight is
the
ideal framework for creating Rich Internet
Application
-
style user interfaces
. A Windows
Phone Silverlight application exposes its
UI through a set of pages. Windows
Phone controls that m
atch the Windows
Phone
visual style can be used to enhance the look and feel of the UI.
Visual Studio
or
Expression Blend
can be used for
designing the XAML
-
based
interfaces.
Visual Studio can be used to
implement the application logic
by utilizing
the
media rich Silverlight libraries
or the base functionality provided by the Common
Base Library. For more information, see
The Silverlight and XNA Frameworks for
Windows Phon
e
.
XNA Framework
-
The XNA
Framework is c
omposed of software, services
, and
resources
focused on enabling game developers to be successful developing on
Microsoft gaming platforms
. Microsoft provides
technology
that allows professional
developers to
quickl
y enable games on platforms
like
Windows
Phone, Xbox
360,
Zune HD
, and
Windows
7
.
o
The XNA
Framework
provides a complete set of managed APIs for game
development. This includes
2D sprite
-
based APIs
that
support
rotation,
scaling,
stretching
, and
filtering
as well as
o
3D graphics APIs for 3D geometry
,
textures
, and
standard lighting
and
shading
.
With
Windows
Phone
7.5
, you can now combine
Silverlight
and the
XNA Framework
into a single application. For more information, see
The Silverlight and XNA
Frameworks for Windows Phone
.
Sensors
-
A variety of sensors will return data that can be consumed by developers. For
example,
o
multi
-
touch input,
o
accelerometer,
o
compa
ss,
o
gyroscope, and
o
microphone sensors
will all be accessible by APIs. For more information, see
Touch Input for Silverlight
,
Touch Input for XNA Framework
, or
Sensors Overview for Windows Phone
.
Media
–
Both
Silverlight
and the
XNA
Framework
provide developers with a
programming model for building
rich user experiences
that incorporate
graphics
,
animation
, and
media
. The managed APIs support a variety of media formats and allow
for discovery and enumeration of media on the device and for playback of that media. For
more information, see
Media for Windows Phone
.
Data
-
Isolated storage
allows an application to create
and
maintain data in a
sandboxed isolated virtual folder
.
o
All I/O operations
are
restricted
to
isolated storage
and
do not have direct
access to the underlying operating system file system
.
o
This
prevents unauthorized access
and
data corruption
by other applications.
Structured data can be
stored
in a
relational database
and can be
accessed by usin
g
LINQ to SQL.
For more information, see
Isolated Storage Overview for Windows Phone
or
Lo
cal
Database Overview for Windows Phone
.
Location
-
The
Microsoft Location Service for Windows
Phone
allows application
developers to
access the user’s physical location information
from a single
API
.
Developers can
query
for
o
the
current
location
,
o
subscribe to
Location Changed
events
,
o
set
the
desired
accuracy
of the data
,
o
get access
to the
device heading
and
speed
, and
o
calculate the
distance
between points
.
The Location APIs on the phone will work in conjunction with the Location Cloud
Services.
For more information, see
Location for Windows Phone
.
Back to
Top
Tools
Developers can
download
and
install a package
that includes all the tools that they need to start
developing applications for Windows
Phone.
If Visual Studio is not already installed, Visual Studio
2010 Express for Windows
Phone will be
installe
d.
If Visual Studio is installed, an add
-
in to Visual Studio will be installed.
For more information about downloading and installing the Windows
Phone
SDK, see
Installing
the Windows Phone SDK
Visual Studio 2010
-
Visual Studio is the IDE for building Windows
Phone applications.
Within the Visual Studio IDE, developers can create Silverlight or XNA
Framework
programs that run on Windows
Phone. Visual Studio includes a designer, debugger,
project system, packager,
and manifest generation. For more information, see
Visual
Studio 2010 Express for Windows Phone
.
Expression Blend
-
In the same way that designers use
Expression Blend to
design
Rich Internet Applications for the desktop browser
, they can also
design creative
and unique Silverlight
-
based applications on a Windows
Phone
. Expression
Blend for
Windows
Phone allows designers to
create XAML
-
based interfaces for
Windows
Phone
applications
, whose behaviors can then be implemented by developers
in Visual Studio. For more information, see
Expression Blend
.
Windows Phone Emulator
-
Win
dows Phone Emulator is integrated i
nto Visual
Studio and Expression Blend to make the testing and debugging of applications
easier and more efficient
. The
emulator fully supports application deployment,
debugging, and application execution
. It includes support for GPU emulation and
orientat
ion change. For more information, see
Windows Phone Emulator
.
XNA Game Studio
-
The
XNA
Game
Studio is an integrated design environment
that developers can use to build fun
and exciting games for Microsoft Windows®,
the Microsoft Xbox
360® video game and entertainment system, Microsoft Zune®,
and Windows
Phone
. XNA Game Studio extends the Visual Studio tools to support the
XNA
Framework. The XNA
Framework is a managed
-
code c
lass library that contains
functionality targeted specifically at game development tasks. In addition,
XNA
Game
Studio includes tools for incorporating graphical and audio content into your
game. For more information, see
XNA Game Studio
.
Samples, Documentation, Guides and Community
-
Documentation, How
-
to Guides,
sample code, and sample applications are provided to aid developers ramping up on
Windows
Phone development
.
o
Forums, blogs
, and
websites
are available for developers to ask questions and
share information with the greater Windows
Phone community. The new Visual
Studio Help system will allow developers to continuously update their
documentation sets. For more information, see
App Hub
,
Windows Phone Blogs
,
or
Windows Phone 7 Forums
.
Back to Top
Cloud Services
The
Windows
Phone Application Platform
provides many features for
building compelling
web
-
integrated applications
. While a Windows
Phone is
powerful
and
rich
, the cloud makes it
even more powerful. The Cloud Services are always on, are more scalable, can contain more
functionality, and are not dependent on battery life.
Services built on Azure
or
third
-
party web
serv
ices
can be
accessed to bring data to the phone
. The
Windows
Phone Marketplace
provides a
means for developers
to certify and
distribute their applications
to consumers.
Notifications
-
To enable efficient, dynamic, and up
-
to
-
date information and
communica
tion channels, Windows
Phone Application Platform provides an API to
enable services to notify the user when relevant events have occurred
. This
eliminates the need for polling and reduces battery consumption. For more information,
see
Push Notifications for Windows Phone
.
Location Cloud Services
-
The Location Cloud Services will work together with the
Location APIs on the phone
, making its presence transparent to the devel
oper. The
service will use Wi
-
Fi, cellular, and GPS
data to provide a single source for providing
position lookup. Assisted GPS (AGPS) is available to improve the fix for GPS. For more
information, see
Location for Windows Phone
.
Identity, Feeds, Social, and Maps Services
-
The extensive variety of web services in
the
cloud allow consumers to identify themselves
,
interact with social communities
,
receive data feeds
, and
use
maps for navigation
. Developers can enrich this experience
by providing new applications that use these services. For more information, see
Networking and Web Services Overv
iew for Windows Phone
.
Windows Azure
-
Visual Studio 2010 provides the
development environment for
creating applications using the Windows Azure™ Platform
, an
Internet
-
scale cloud
computing
and
services platform hosted in Microsoft data center
s. The Windows
Azure Platform provides a range of functionality to
build applications that span from
consumer web to enterprise scenarios
and includes a
cloud operating system
and a set
of
developer services
.
o
Fully interoperable through the support of
ind
ustry standards
and
web protocols
such as
Representational State Transfer (REST)
and
Simple Object Access
Protocol (SOAP),
you can use the
Azure services individually or together,
either to build new applications or to extend existing
ones. For more
inform
ation, see
Windows Azure
.
o
Microsoft Advertising SDK for Windows Phone
-
Monetize your Windows
Phone
applications and games by including ads from Microsoft Advertising
. The Microsoft
Advertising
SDK for Windows
Phone
enables you to create applications that can do the
following:
o
Easily
integrate text
and
banner ads
into your applications and games.
o
Provide a
monetization solution that maximizes in
-
app advertising revenues
by unlocking the
power of
multiple sales channels competing in real time to
purchase your ad inventory.
o
Provide various ad
targeting capabilities to deliver the most relevant ads to
your users.
o
Seamlessly handle impression reporting.
Back to Top
Portal Services
The Windows
Phone Marketplace provides a centralized location for developers to submit and
certify their applications. Consumers have a centralized location from whi
ch to buy or update
their applications.
Registration and Validation
-
Developers can get started on
App Hub by signing up
with their Live ID
. After registration is complete, developers can
get all the needed tools
in a single download.
Certification,
Publishing, and Update Management
-
A set of tools will help the
developer to
submit and certify their applications for the Windows
Phone
Marketplace
. Applications are submitted in an
.xap
file format, which is essentially one
compressed file
that contains
all the files
that are needed by the application.
o
Developers
can
track their submission status and then receive a notification
once the certification is complete
. After an
application is certified
, it can then
be
submitted for publishing on the Windows
P
hone Marketplace
.
o
Developers can
set pricing
and
select the markets
in which they want to
publish
the application.
If developers fix bugs
, add
new functionality
, or
provide a whole new version of the
application
, they must
go through the certification
and
publishing process again
.
Windows
Phone Marketplace and Billing
-
The Windows
Phone Marketplace provides
the one
place where developers can make their applications available for purchase
by consumers
. Both
Mobile Operator
and
credit card billing
are supported, making it
as easy as possible for consumers to pay for the application.
Business Intelligence
-
Business intelligence tools will
provide developers with
information reporting
about their application.
Back to Top
The Application Development Lifecycle
This section describes how developers can use the Windows
Phone Application
Platform from
the beginning to the end of the development cycle.
Getting Started With
App Hub
App Hub will be the starting point for developers.
Developers can begin by signing up for a
Windows Live ID. Next, they can sign up to obtain the Windows
Phone
SDK
and associated
licensing materials for developing applications using Visual Studio and Expression Blend
.
This will be a
single download
that contains
everything the developer requires for building
an application for Windows
Phone.
Developers can also
register one or more phones for use as
test hardware in validating the applications that they are building. Any retail Windows
Phone can
be registered as a test device.
App Hub
contains
samples, documentation,
and
active developer communities
that help mak
e
Windows
Phone developers successful.
Designing an Application and Producing an Application Package
Once developers have signed up to be a Windows
Phone developer and have installed the
developer tools, they can begin developing their applications.
Games
and
graphics
-
intensive applications
are created in Visual Studio using the
2D and 3D
libraries of the XNA
Framework.
The visual design for
XAML
-
based applications for Silverlight
is created in
Visual Studio
and/or Expression Blend
. The resulting XAML
document containing markup is then interpreted
by the Silverlight presentation engine and other components of the Windows
Phone Application
Platform.
With Windows
Phone
7.5, you can now combine Silverlight and the XNA Framework into a
single application.
For more information, see
The Silverlight and XNA Frameworks for
Windows Phone
.
The Visual Studio IDE is used to write managed code defining the visual behavior of all
Windo
ws
Phone applications. When the application is completed, a package is created that
includes everything the application needs.
Debugging an Application
While creating a Windows
Phone application, a developer can debug the program on a phone or
in
Windows
Phone emulator
. Debugging the application involves creating a package targeted
to the debugging platform and then using Visual Studio to deploy the package. Call stack
walking, expression evaluation, source code stepping, and variable watch windows are all
supported.
Publishing an Application
After an application has been completed, a developer can make the program available to other
users on the Windows
Phone Marketplace. To publish to the Windows
Phone Marketplace,
developers submit a .xap file. The
.xap
file is a compressed file containing all the information
needed by the application
. This includes an application icon, a start tile, metadata, and licensing
terms that determine how their program can be used.
Next, the developer signs into App Hub and su
bmits the application package for certification.
This is the only way to make an application available to consumers. The certification process
will verify that the application is well
-
behaved, works for the languages and markets indicated,
and does not adv
ersely affect the overall health of the phone.
Once the package has satisfied the Windows
Phone Marketplace certification requirements, the
developer is notified and can publish the application to the Windows
Phone Marketplace through
App Hub. Applications
are then made available for consumers to download in the
Windows
Phone Marketplace. Credit card and mobile
-
operator billing operations are supported.
Managing Published Applications
After a Windows
Phone application is published to the Windows
Phone Marketplace, the
developer uses App Hub to manage the versions of the application that are available for
purchase.
Back to Top
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