Maestro: E2E tests for Flutter that go beyond your app
Most E2E testing tools stop at the edges of your app. Maestro doesn't. Here's what it is, how it works, and how I use it in OpoSAS to validate real flows on device.
6 min read
Blog
OpoSAS: studying for civil service exams with Flutter
OpoSAS is an app for preparing Spanish civil service exams: practice tests, per-topic statistics, an AI assistant, and Premium subscriptions. Here's how it's built.
3 min read
I migrated my blog from WordPress to Astro in a few hours using Claude
My blog had been on WordPress for years and it worked. But without version control, with a sidebar that fragmented focus, and no reading time on post cards, the time had come to rebuild it from scratch. Here's what happened when I used Claude Code with the VGV Wingspan plugin to plan and build it.
5 min read
The Single Responsibility Principle and Unit Tests in Flutter
As I mentioned in the post about SOLID principles, we're starting this series with the Single Responsibility Principle — for me, one of the most important principles in software development.
3 min read
SOLID Principles in Flutter: Keys to Clean, Maintainable, Flexible, and Scalable Code
The SOLID principles offer a guide to writing Flutter code that's easier to maintain, extend, and understand. They help you build more robust and scalable applications while reducing bugs and improving collaboration.
3 min read
Cross-Platform Development with Flutter
After a long time — too long — I'm back to writing. This time we're switching things up and diving into Flutter for cross-platform development.
3 min read
Firebase for Xamarin.Forms — Part 4: FirebaseDatabase for iOS
After implementing FirebaseDB for Android, we wrap up this series with the iOS database implementation.
2 min read
Firebase for Xamarin.Forms — Part 3: FirebaseDatabase for Android
Continuing the Firebase Xamarin.Forms series — after implementing authentication for both platforms, we now tackle the Firebase Realtime Database on Android.
2 min read
Firebase for Xamarin.Forms — Part 2: FirebaseAuth for iOS
In the previous article we implemented Firebase.Auth for Android. Today we continue with the iOS implementation.
4 min read
Firebase for Xamarin.Forms — Part 1: FirebaseAuth for Android
Following the introduction to Firebase and Xamarin.Forms, we start the implementation today — focusing on authentication for the Android project.
5 min read
Firebase for Xamarin.Forms Apps — Introduction
The goal of this new series is to introduce Firebase, explore some of its features, and show how to integrate it into cross-platform apps built with Xamarin.Forms.
2 min read
Native or Hybrid App? The Big Question
Should you build mobile apps natively or reach for a cross-platform framework? There's no absolute answer — but there are better and worse choices depending on what you're building.
3 min read
How to Do TDD in Android — Part 4: Espresso & UI Tests
In this post we cover UI testing with Espresso, closing out the TDD in Android series.
2 min read
How to Do TDD in Android — Part 3: Mocking & Integration Tests
Continuing the TDD in Android series — this time with integration tests and how to test UI layer interactions.
3 min read
How to Do TDD in Android — Part 2: Unit Tests
Continuing the TDD in Android series — in this installment we write our first unit tests.
3 min read
How to Do TDD in Android — Part 1: Overview and Setup
As we discussed in the previous article, unit tests are critical for development quality, and TDD forces you to write those tests before writing any production code. Here's how to set up an Android project for TDD.
2 min read
Test-Driven Development: TDD
This is the first post in a series on TDD — something I discovered relatively recently that I think should be fundamental to every development project.
2 min read
Android: How to Use RecyclerView
RecyclerView has been one of Android's most important components and appears in the majority of apps. Here's how to use it.
3 min read
MovieList
MovieList lets you manage your movie collection, watch trailers, and look up metadata.
1 min read
KidsChat
KidsChat is a messaging app for kids with parental controls built in.
1 min read
Design Patterns: The Great Unknowns
Design patterns were a mystery to me for a long time. Here's what they actually are, why they matter, and how to pick the right one.
3 min read
Java Alternatives for Android
You need Java to build Android apps — right? Not quite. There are other options that have been gaining ground over the past few years.
2 min read