![]() ![]() The available debug targets change when switching startup projects. The project that you choose is shown in bold in the Solution Explorer. To set the startup project, right-click on the project node in the Solution Explorer and choose the option Set as Startup Project. You can quickly switch the startup project from the Debug target drop-down that now enumerates all the possible projects in the solution. When you run the solution, the project that runs is the one that's selected as the startup project. Download and install this update before you start building universal Windows apps. Visual Studio 2013 Update 2 introduces the new feature that is universal Windows apps. The screenshot below shows the solution that Visual Studio creates when you choose the project template for a Blank App (Universal Apps). They don’t have a binary output, but their contents are imported by the platform projects and used as part of the build process to generate the app packages (.appx). ![]() The shared project is a container for code that runs on both platforms. These projects contain assets that are specific to the platform being targeted. ![]() The Windows and Windows Phone projects are platform projects and are responsible for creating the application packages (.appx), targeting the respective platforms. building a universal Windows app from scratchĪ universal Windows app is a collection of three projects enclosed in an optional solution folder.how to add support for Windows or Windows Phone to an existing project.how to write cross-platform code in the shared project.context switcher for universal Windows apps in the Visual Studio editor.switching startup projects in Visual Studio.the structure of universal Windows apps.In this tutorial, I will discuss the following topics which are relevant to developing universal Windows apps: The below screenshot shows what we are going to build. While the clock app only targets Windows Phone, we will use its design to make a similar app for Windows Phone 8.1 and Windows 8.1. ![]() The design was inspired by a Windows Phone 7 clock app tutorial on Tuts+. It uses the same implementation as Hex Color JS Clock to generate the hex code of the current time. With every tick of the clock, the app's background changes to the color corresponding to the current time converted to hexadecimal. It goes through the whole 24 hours color range, from #000000 to #235959. In this tutorial, I will use a universal Windows app template to create a Hex Clock app, a precise hexadecimal color clock. Windows Phone features only available in the Silverlight framework are: In the current version there is an API convergence of 90%, but there still is a small set not converged yet. We are using the XAML framework to develop an app for multiple platforms. The WinRT runtime enables you to create one application that will run on Windows, Windows Phone, and even Xbox One. You can create a Windows Phone application using the Silverlight runtime (version 8.0 or 8.1) or the WinRT runtime (the one from universal windows apps). Rather, it takes the form of a Visual Studio solution containing multiple projects, one project for each targeted platform in addition to a shared project containing code and resources shared between platforms. A lot of code can be shared between the projects as Windows Phone 8.1 implements the majority of the WinRT APIs that Windows 8.1 implements. Introductionįrom a developer's perspective, a universal Windows app is not a single binary that runs on multiple platforms. This reduces the effort needed in building and maintaining an app for each type of device. You can share code, user controls, styles, strings, and other assets between the Windows Phone and Windows 8 projects in Visual Studio. The goal is to maximize the reuse of code. You develop once, share most of your code, and deploy on Windows, Windows Phone, or Xbox. Universal Windows apps enable you to target every Windows device in one solution. ![]()
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