Developing for Windows Phone 8 and Windows 8

Dave Bost

Technical Evangelist, Windows

Phone

http://davebost.com

@davebost

October 1st 2012

Cross DevelopmentWindows 8 and Windows Phone 8

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04/08/2023Microsoft confidential3

• Linked files

• #if conditionals

• Using Extension methods to bridge implementation differences

• MVVM

• Portable Class Libraries

• A common user experience bringing high-quality experiences to the user.

Best Practices for Windows 8 / Windows Phone 8


Common Structure

Windows 8 Windows Phone 8

Common APIs in Windows 8 and Windows Phone 8

Your appsYour way

Windows Phone 8 Developer Platform

XAML Apps Direct3D Apps

XAML Maps Geolocation Sensors In-App Purchase Direct3D

HTML XML Threading Touch Speech XAudio2

Phone Features Push Camera Video Proximity Media

Foundation

Calendar Wallet Contacts Core Types VoIP STL

Multitasking Live Tiles Memory Async Enterprise CRT

C# and VB C#, VB, and C++ C++

File system, Networking, Graphics, Media

Core Operating System


“Add as Link”


“Add as Link”

Windows 8 Windows Phone 8


Common APIs

Common

Base Class Library

Hardware

Storage (Files and Folders)

Different

Launchers and Choosers

Sharing APIs


#if Conditional Blocks

Windows 8#if NETFX_COREDispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {#endif

#if WINDOWS_PHONEDeployment.Current.Dispatcher.BeginInvoke(() => {#endif

Windows Phone 8


Threading

Windows 8 AND Windows Phone 8#if NETFX_COREDispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {#elseDeployment.Current.Dispatcher.BeginInvoke(() => {#endif double _accelX = args.Reading.AccelerationX; double _accelY = args.Reading.AccelerationY;


Web Service


HttpWebResponse and HttpWebRequest

Windows 8var request = (HttpWebRequest)WebRequest.Create(autoCompleteUri);

HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync();

// retrieve data using StreamReader



Windows Phone 8var request = (HttpWebRequest)WebRequest.Create(autoCompleteUri);request.BeginGetResponse(new AsyncCallback(AutoCompleteCallback), request);}

private void AutoCompleteCallback(IAsyncResult callback){ HttpWebRequest request = (HttpWebRequest)callback.AsyncState; HttpWebResponse response = (HttpWebResponse)request.EndGetResponse(callback); // retrieve data using StreamReader}

Convergence through Extension


Extension Methods

Windows Phone 8 HttpWebRequest Extensionpublic static Task<HttpWebResponse> GetResponseAsync(this HttpWebRequest request){ var taskComplete = new TaskCompletionSource<HttpWebResponse>(); request.BeginGetResponse(asyncResponse => { HttpWebRequest responseRequest = (HttpWebRequest)asyncResponse.AsyncState; HttpWebResponse someResponse = (HttpWebResponse)responseRequest.EndGetResponse(asyncResponse); taskComplete.TrySetResult(someResponse); }, request);

return taskComplete.Task;}



Windows 8 AND Windows Phone 8var request = (HttpWebRequest)WebRequest.Create(autoCompleteUri);

HttpWebResponse response = (HttpWebResponse)await request.GetResponseAsync();

// retrieve data using StreamReader

Convergence through Architecture

Model-View-ViewModel (MVVM)

ViewsHow to display informationWritten in XAML

View ModelsWhat information to displayFlow of interaction

ModelsData objectsBusiness logicEtc.

Model

View Model

View Platform-specific

PortableReferences

Databinds

•One source

•One project

•One binary

•Multiple platforms!

Portable Class Libraries

Portable platform/feature matrix

What can I use and where?

Cross-platform app architecture

Startup

Views

Windows Store App

Platform specific functionality

View Models

Models

Portable Class Library

Platform functionality abstractions

Startup

Views

Windows Phone App

Platform specific functionality

Reference Reference

MVVM w/PCLDemo


UI Differences and XAML


Different Form Factors Require Different UX

Windows Phone 8 Windows 8

Screen Size

800x480

1280x720

1280x768

Screen Size

1024x768

2,560x1,440

everything in between



Windows Phone 8 Windows 8

Orientation

Portrait

Landscape

Orientation

Portrait

Landscape

Snapped

Microsoft confidential27

Different Controls

GridView

Group-able

Array of Tiles

Dynamic item size


Different Controls

FlipView

Browsing View

Touch-optimized for left-right navigation


Different Controls

Semantic Zoom

Pinch-zoom through grouped list of items



Panorama

Introduction and exploratory content



Pivot

Scanning views

Grouped information



LongListSelector

Headers and Footers

Group header navigation


Translating UX

Semantic Zoom Pivot


Translating UX – Details View

Horizontal scroll Vertical scroll


Different Form Factors Require Different UXGridView LongListSelector

Summary


• Abstracting Models, ViewModels• Binding data to the View• Linked files• Models, Services could be encapsulated in Portable Class Libraries

• Shared APIs (hardware, storage, base class libraries)

• Using #if conditionals for small code differences

• Using Extension methods to bridge implementation differences• Async-await model for HttpWebResponse/Request

• Focus on the user experience that works for the form factor

Windows 8 / Windows Phone 8 Apps Are a Perfect Match

The information herein is for informational purposes only an represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be

interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation.

© 2012 Microsoft Corporation.

All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.

MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

Developing for Windows Phone 8 and Windows 8

Technology

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