James Montemagno
James Montemagno

Live, Love, Bike, and Code.

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James Montemagno

Xamarin

Goodbye Android Emulators, the Windows Subsystem for Android is Here!

Android Emulators have been a pain in everyone's side for pretty much ever. Intel HAXM is great, but limited to Intel, then there were custom emulators like Xamarin Android Player and Genymotion, but required additional installs, and finally Hyper-V support, which brought with it AMD support, and side by side Docker support as well. But now, Windows 11 is here and so is a brand new Insiders Preview that brings with it Android app support, which is CRAZY AWESOME. More so is that you can use the n…

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Staged Rollouts & Phased Release on Google Play and App Store Connect

As an app developer it is hard enough to create your app, test your app, prep the app store listings, and then get your app approved. The last thing you want to think about is how fast or slow to roll out your app and updates to users. For the past 10 years all I have ever done was just release the app to everyone all at once, and for a long time this all that was available to us. However, now there are options for developers from both Google and Apple that can manage your release. Unfortunately…

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Long-running Operations on macOS and iOS with NSProcessInfo

One issue that sometimes comes up in app development is keeping your app alive and running during long running processes. In my case with My Stream Timer, when the user starts a timer, it needs to keep running no matter what. My first solution was to simply turn on Screen Saver mode. var appDelegate = ((AppDelegate)NSApplication.SharedApplication.Delegate); appDelegate.MainWindow.Level = NSWindowLevel.ScreenSaver;This solution "works" but has the side effect that the app will always be on top al…

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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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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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How-to Integrate Helpful Support Emails in Mobile Apps with Insightful Data & Logs

In the mad rush to finish my most recent app, My Cadence, I forgot to integrate an essential feature. A feature that enables my users to easily get a hold of me to report issues or request features, which is of course email support. Both Google Play and the App Store enable you to supply a support website and email, however this is a very lack luster experience for both you and your users. For your users they need to go open the app store, find your app, and then find the support button. For you…

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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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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!