![]() ![]() The default list of devices is by no means complete, but you can easily extend it by creating your own XML-based device definitions. The XAML designer is very useful to avoid having to rebuild the entire project when working on the app layout. You can download the 4'' phone definition shown above here. Once you load the designer, you will find your new device listed among others. Jessie Houghton discusses A year of making you more productive using Git in Visual Studio. Once we are satisfied with our new device definition, we can copy it to the "1033" directory alongside the others and restart Visual Studio. Orientation qualifier - pipe-separated list of orientations the device supports, Portrait and Landscape seem to be the only options that are actually reflected in the designer Size - the diagonal size of the device's display in inchesįinally, we can also define some qualifiers inside the element:ĭeviceFamily qualifier - the device family, can be either Mobile, Desktop, Xbox, IoT, HoloLens or PPI (which stands for Surface Hub) Scale - scaling factor in percents, must be either 100, 125, 150, 200 or 400 Height - physical height of the screen in pixels Width - physical width of the screen in pixels Name - name that will be displayed in the list ![]() The file structure is very self-explanatory. I recommend you to copy the file to Desktop or other accessible location, because you will otherwise need to grant yourself permissions before trying to save the modified XML file in Program Files. The easiest way to start creating a new device definition is to just copy one of those already existing. Let's try to create a new custom device that will be very similar to the Lumia 520 - 4 inch display with 480 x 854 pixels and 150% scaling factor, which yields the smallest supported effective screen size for UWP Mobile - 320 x 569. You can see that they are plain simple XML files, named #_name.xml, where # is a number that is supposedly used just for ordering purposes and name is used for easy identification. The full path C:\Program Files (x86)\Windows Kits\10\DesignTime\UAP\Devices\1033 is where all the design device definitions reside. If we open it and go into "Devices/1033", we will finally reach our final destination. This folder contains "CommonConfiguration" directory (which contains the default control templates, styles and theme resources for built-in XAML controls), and also the "UAP" directory. This folder is definitely browse-worthy, but the most interesting for us in this case is the " DesignTime" folder. On this location we will find the "10" folder, which is the home of UWP SDKs. The default place where the Windows SDK files are installed is C:\Program Files (x86)\Windows Kits. Is it possible to expand the selection with more devices?ĭefault device offering in Visual Studio Where are the devices defined?įirst thing we need to do is to find the place where the device definitions are stored. Unfortunately, the default selection might not be sufficient for you in some cases, especially when you want to optimize for a specific screen. Awesome! Be sure to read the Evolve blog post announcing all these awesome features.The Visual Studio XAML Designer for Universal Windows Platform offers design-time device previews for several different screens size and scaling combos. ![]() Here is a short video walking through the process:ĭon’t forget that it even renders your custom renders. Now the rest of your Bindings will all just work, which is pretty much fantastic. 'There is no visual designer for generating XAML in Xamarin.Forms applications, so all XAML must be hand-written.' n However, the Xamarin.Forms XAML Editor can be displayed by selecting the View > Other Windows > Xamarin.Forms Editor menu option. Launch Visual Studio, click New Project., and choose the Visual C > Android > Android App (Xamarin) template. Then you can set BindingContext of the page to your design time static view model:īindingContext="" The first step is to create a new Xamarin.Android project. Xmlns:design="clr-namespace:Monkeys assembly=Monkeys" Next up is to head over to your XAML file and create a new xmlns:design on your Page that refers to the assembly that you are using. Note: you could pass in some additional arguments to tell your view model you are in design mode. ![]() MonkeysVM ? (monkeysVM = new MonkeysViewModel()) Public static MonkeysViewModel MonkeysViewModel => So here is the setup, simply create a new class called ViewModellLocator.cs and create a static version of each ViewModel you wish to use (I personally put it in my App.cs): Essentially, Laurent taught us years ago how to create a static ViewModelLocator class that can be used at design time. I first thought about taking this approach and create a static List for my Monkeys app, but then I thought there has to be a better way. During the keynote Nina showed off a list of Coffees where the ItemSource was bound to some design time data. ![]()
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