Author Archives: Jesse Liberty
52 Weeks of Xamarin: Week 14 – Thrice (part 2)
In the previous posting I started a new project in Xamarin.Forms that I will reproduce in iOS and Android in coming posts. Today, we’ll take a look at the second page in the Xamarin.Forms version: ListTasksPage. This lists the tasks that … Continue reading
Bayesian Probability
[Originally posted Oct. 12, 2009] Spent the early hours of this morning reading a great blog post by Jeff Atwoodwhich makes reference to a Elizer S. Yudkowsky’s Intuitive Explanationof Bayesian Probability. The timing was good as I had just finished the … Continue reading
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New Pluralsight Course: Testing Xamarin Apps
Posted in Xamarin
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52 Weeks of Xamarin: Week 13 – Writing It Thrice
In this and a number of following posts, I’ll build the same program three times: once in Xamarin.Forms, once in iOS and once in Android. This is directly based on my Pluralsight course, Beginning Mobile Development with Xamarin To … Continue reading
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52 Weeks of Xamarin: Week 12 – Advanced Customized Controls
Last week we looked at a simple example of customizing a control and creating a custom renderer. This week we go a bit deeper. Our goal is to give a BoxView a border, and to adjust that border dynamically. [ … Continue reading
52 Weeks of Xamarin: Week 11 – Customized Controls for Xamarin.Forms
Xamarin.Forms is a killer framework, and it has a wide variety of very flexible controls. But sometimes you run into restrictions on the control that you really need to override. The answer to this dilemma is to create a customized … Continue reading
52 Weeks of Xamarin: Week 10 – The UI for our database program
Last week we created the code to add and find a “person” in our SQLite database. This week we’ll finish up by creating the View and the ViewModel. The View is where most of the action is, in this small demo … Continue reading
52 Weeks of Xamarin: Week 9 – Databases part 1
Working with SQLite as your database in Xamarin.Forms is not difficult but it does involve some specific steps: Add the SQLite-.Net PCL library to all three projects Create the ISQLite interface Add a singleton to your app class Open your … Continue reading
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52 Weeks of Xamarin: Week 8 – Testing the View Model
Until now, our tests have focused on the model, Projects. The point of MVVM, however, is to enable sufficient separation of concerns to allow testing of the program’s logic in the ViewModel. Today, we turn to ViewModel tests, using these tests … Continue reading
52 Weeks of Xamarin: Week 7 – First Unit Tests
In the previous posting, I set up the ProjectTracker solution, including the xUnit testing folders. We talk a lot about test-driven design, but the truth is that we (most of us?) start with an overall architecture in mind prior … Continue reading
52 Weeks of Xamarin: Week 6 – Starting xUnit Testing
Last week we decided to start with test-first development using XUnit. To get underway, let’s create a new Xamarin.Forms application called BlogProjectTracker. Once the projects are created we’ll return to the solution and add a new .NET project of type Portable Library … Continue reading
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Newest Pluralsight Course: Beginning Mobile Development with Xamarin
Incredibly excited to announce my latest Pluralsight Course: Beginning Mobile Development with Xamarin. In this course, you will build a real-world application three times, using three different Xamarin platforms, giving you tremendous insight into how Xamarin programs are created and … Continue reading
