Building amazing multi-platform solutions for iOS, Android, Mac, Linux and Windows
I was discussing the features of the Uno Platform today and realised that we sometimes gloss over all the features. In this post we’re going to do a walk through of some of the different controls, styles and themes available to Windows (WinUI/Windows App SDK) and Uno Platform developers. Gallery One of the best ways … Read more
In case you haven’t seen the release notes or the blog post the 4.10 release for the Uno Platform was pretty huge with a couple of big features shipping in this release. One of these features was .NET MAUI Embedding with allows any .NET MAUI Control to be embedded within an Uno Platform application. If … Read more
The Windows Community Toolkit is in pre-release of v8 – full details of their announcement here. With the new consolidated structure, there are packages for both UWP and WinUI but more importantly both sets of packages also target the Uno Platform. In this post we’re going to walk through adding one of the components from … Read more
Earlier this week Six Labors announced the release of ImageSharp.Drawing v1.0 and it made me wonder whether this could be used as an alternative to Skia for controls that want to do custom rendering in a Windows, or multi-platform Uno Platform, application. For Skia there are already Uno (which includes Windows/WinUI) views (see source here) … Read more
In a previous post on the topic of hot reload I discussed using the CreateNewOnMetadataUpdate attribute to force updating of entire classes, rather than patching existing types. This makes hot reload more resilient but does require additional logic in order to apply the newly created types. In this post we’re going to walk through the … Read more
One of the more complex parts of building an application is getting navigation to work. In a Windows application (or in a multi-platform application using the Uno Platform) you can easily navigate between pages using Frame.Navigate and Frame.GoBack but what if you want to use a more complex navigation structure like tabs or a NavigationView. … Read more
In my first post in this sequence on MVVM and MVUX we built out a simple application that searched movies in The Mobile Database (TMDB) using the text entered to match against the movie title. What’s interesting about the TMDB api is that the search results are actually paginated with the initial request only returning … Read more
The purpose of this post is two fold, firstly to provide an introduction to Model-View-Update-eXtended (MVUX), as developed by the Uno Platform, and secondly to provide a comparison to the more traditional Model-View-ViewModel (MVVM) approach to building XAML-based applications. In order to do this, we’ll first walk through building a simple MVVM based application where … Read more
One of the most significant aspects of the XAML based applications is the concept of lookless controls. I’ve covered this topic a bit in the past but in summary it means that controls can be restyled without changing the behaviour. The Windows App SDK and the Uno Platform provide out of the box styles for … Read more
In writing my previous post on Implicit and Explicit Styles in XAML I was reminded of a bug in the definition of the DefaultButtonStyle which prevents you setting the Foreground colour of a Button. The issue is documented, along with the fix, in this issue but for whatever reason (and I can’t think of one … Read more
I’ve touched on implicit and explicit styles a couple of times in previous posts (eg here and here) when talking about XAML styles. In this post I wanted to provide a more detailed explanation on what implicit and explict styles are and how they should be used in XAML to style controls. In discussing style … Read more
One of the questions that came up recently was how to make what appears to be a simple change to a Button – change the background colour of the Button to Red when it’s disabled. You’d think this would be simply a matter of changing a property on the Button but for most flavours of … Read more
As a UWP developer I relied heavily on the framework to deal with managing application resources such as images and string literals. You might think this is quite simple as images are just files that are packaged with your app and strings can just be put in a constants file. Where this all gets complicated … Read more
I think this will be the last in the series of posts covering validation using the INotifyDataErrorInfo interface, which can be used to expose validation error messages directly in your XAML. In this post we’re going to look at adding custom validation using both the CustomValidationAttribute and by creating our own ValidationAttribute. We’ll also look … Read more
In my previous post, Adding Validation to a XAML Control Using INotifyDataErrorInfo, I walked through adding validation to a view model using the INotifyDataErrorInfo interface and the Community Toolkit. This post will pick up where that post left off and look at how you can customise the error message that gets displayed. This will improve … Read more
In my previous post on Building a XAML UserControl I made use of the CommunityToolkit.Mvvm (formerly Microsoft.Toolkit.Mvvm) NuGet package to provide the implementation of INotifyPropertyChanged used to data bind properties of our view model to the XAML controls. In this post we’re going to again use the community toolkit but this time we’re going to … Read more
One of the powerful aspects of any XAML platform is the ability to define your own controls. In this post we’re going to look at building a user control that allows you to reuse chunks of your user experience. It doesn’t matter whether you’re using UWP, WinUI, Xamarin.Forms (.NET Maui) or the Uno Platform, the … Read more
Earlier this year I shared a post, Visual Designer, Hot Reload and Beyond, where I talked about how I thought the future of designers would evolve. Looks like I preempted a new feature that’s coming to Visual Studio 2022 called XAML Live Preview. Currently this is in preview for WPF applications but you can imagine … Read more
In the last couple of years we’ve seen a massive spike in interest around “Hot Reload” thanks to the popularity of frameworks such as React/React Native and more recently, Flutter. The goal of Hot Reload is to allow developers to iteratively change their application code, whilst debugging their application – this cuts down considerably the … Read more
If you look at what Microsoft is working on with Project Reunion, it’s clear to see that they’ve set a vision to reunite the various groups of Windows developers. The aim is not to have every developer using exactly the same technology stack but rather to give every developer access to the richness of the … Read more