James Montemagno
James Montemagno

Live, Love, Bike, and Code.

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James Montemagno

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Setting Up an M1 Mac for Xamarin Development

Who just upgraded their MacBook after 8 years?!?! This guy!!! Let's set it up for mobile development with Xamarin for iOS & Android development in C#. That is right, I finally decided to go all in on an M1 MacBook Air (8-Core GPU, 512GB SSD, 16GB RAM) thanks to the $500 "credit" from participating in the DTK program.  Not only was it time for an upgrade since my machine was 8 years old, but also because this new generation of machines marks a pivotal transition for macOS devices moving to AR…

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Code Generation from XAML in Visual Studio is Mind-blowing Awesome

The more and IDE or code editor can do for you the better I say. Visual Studio has been crushing it with new refactorings, IntelliSense, and IntelliCode, one of my favorite features ever. One thing that I have always been hoping for as a XAML developer is deeper connectivity between the XAML and the View-Model. We have seen increased IntelliSense in this area, but with the release of Visual Studio 2019 v16.9 comes code generation from XAML! That is right, you can now have Visual Studio automatic…

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Cross-Platform In-App Purchases for Xamarin.Mac Apps!

This week, one of my best friends Frank Krueger released his brilliant app iCircuit 3D for macOS (he also wrote an awesome blog on how it was made). While I know that catalyst support for Xamarin (and .NET MAUI) is coming soon, I still think there are great opportunities to monetize macOS apps written in C# today (see iCircuit 3D!). I released my In-App Billing Plugin a few years ago for iOS, Android, and UWP apps and it has been awesome to hear how it has helped so many developers monetize thei…

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Introducing My Cadence for Arduino, a DIY Cadence Display for Indoor Cycling

It is official, my holiday hacking is officially complete! This past week I started and  launched a brand new app called My Cadence for both iOS & Android. This simple cadence display app is a perfect pair for my recent $400 DIY spin bike that I have been using for Peloton and Apple Fitness+ classes. However, my holiday hacking wasn't complete until I brought My Cadence to a third and final platform... Arduino! What sparked my interest was when snowzach posted on HackerNews his Arduino proje…

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Asking for app reviews really works! It just takes 1 line of code!

Last week I launched a new app called My Cadence for both iOS and Android. Even though it was a quick app that only took me a week or so to build and ship, I still followed my checklist of best practices to ensure as much success as I could. I of course did real world testing myself and with TestFlight users, I tested light and dark theme modes, and I even put in-app purchases in from the start! Even with all of this, there one line of code (using the Store Review Plugin) that can really make a…

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Porting My Cadence to Android in 1 Day!

It seems like it was just yesterday that I was writing up a blog post on how I was launching My Cadence for iOS and then blogging about how I wrote and shipped the app in under a week. Well, it wasn't yesterday, but it was just 5 days ago! After I shipped the iOS version, I was watching some HGTV on Hulu and thought to myself, "how long would it take me to ship this app on Android?". The answer is around 4 hours' worth of work, and about 4 days of waiting for Google Play to approve my applicatio…

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Building, testing, & shipping My Cadence for iOS in less than a week

My holiday hacking came early this year when I decided to build my own DIY spin bike. Soon, after a few rides, my mind started to swirl with app ideas of how to improve my ride. Then when Apple released Apple Fitness+ without support for displaying cadence information from sensors I knew I had to build an app. That app is My Cadence, which connects to a small cadence sensor and displays the current cadence. It is actually packed full of awesome features including custom themes, in-app purchases,…

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Introducing My Cadence for iOS & Android - a Simple Cadence Sensor Display

It has been nearly 3 weeks since I put together my DIY spin bike and I have now clocked in over 25 rides! Let's just say I am really enjoying have the bike at home now that it is chilly and more rainy outside. Last week I wrote a blog on my experience and did a full Apple Fitness+ review video, in which I mentioned one of the issues I had was the lack of Cadence sensor integration into the app. Knowing your cadence is really important during a ride because it is your RPM that you are spinning th…

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I crush code and share it, publish NuGet packages, speak at conferences, upload videos, pretend I am good at playing video games, tweet up a storm, drink gallons of coffee, and ride my bike. Checkout my monthly newsletter that you should subscribe to!