Universal Apps for Windows

This module…

Universal Apps OverviewConvergence summaryTurning a project universal

Code Sharing StrategiesUniversal + PCL

Universal Apps Overview

Applications on the converged Windows 8.1 and Windows Phone 8.1 platforms

Supported for C#, C++, and Javascript

Create universal apps using project templates or add Windows Phone 8.1 app to an existing Windows 8.1 app

Universal Apps

How Converged Is Windows?

Classes Structs Interfaces

Windows 8.1 SDK 566 119 59

Windows Phone 8.1 SDK 624 131 57

+58 +12 -2

Existing Windows 8.1 app can add Windows Phone 8.1 with shared project (and vice versa)

Convert Project to Universal

Use #if to navigate differences between Windows and PhoneWindows = WINDOWS_APPWindows Phone = WINDOWS_PHONE_APP

Example: Hardware back button is Windows Phone only

#if Compiler Conditionals

#if WINDOWS_PHONE_APPWindows.Phone.UI.Input.HardwareButtons.BackPressed +=

this.HardwareButtons_BackPressed;#endif

Windows 8.1 Universal App

demo

Code Sharing Strategies

Shared Project FilesMost File Types

Portable Class LibraryLibraries & Windows Runtime

Components“Add As Link”

Code Sharing Options

Allow sharing source between converged appsNo binary outputSupports all items

Code filesXAMLImagesXML/JSONRESW

Shared Projects

Cross-Platform XAML

Visual State Manager to handle layout changes

Session 6: Adaptive UI for Differing Screens

Shared XAML Components

#if WINDOWS_APP var result = VisualStateManager.GoToState(this, "Windows", false);#elif WINDOWS_PHONE_APP var result = VisualStateManager.GoToState(this, "WindowsPhone", false);#endif

For Windows Universal AppsSupports WinRT APIs

Output Windows Runtime Component

Expose libraries to C++, Javascript apps

Portable Class Libraries

For Windows Universal AppsSupports WinRT APIs

Output Windows Runtime Component

Expose libraries to C++, Javascript apps

Broad Targeting for WP8, .NET

Portable Class Libraries

Similar to Shared fileCompiler conditionals to share

across additional platforms

“Add As Link”

Separation of ConcernsDecouple UI from logic

UI In the Windows/Windows Phone projectsplus platform specific API sets (some geolocation, media,

sensors)

Logic in Shared projectplus XAML components that “make sense”

Code Sharing Architecture

Universal App + PCL

demo

Summary

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