The projects I build with AI agents and what I learn from each one. Antonio Leiva, founder of DevExpert and Google Developer Expert for Android.https://antonioleiva.comenhttps://antonioleiva.com/what-is-loop-engineering-practical-codex-examplehttps://antonioleiva.com/what-is-loop-engineering-practical-codex-examplePeople are starting to talk more and more about Loop Engineering. As always when a new label appears, part of it is hype. But I do think there is something…Wed, 08 Jul 2026 10:30:00 GMThttps://antonioleiva.com/1password-runtime-local-agents-desktop-appshttps://antonioleiva.com/1password-runtime-local-agents-desktop-appsThere is a funny phase when you start using local agents seriously. At first, everything is simple: you have an API key, you put it in .zshrc, .bashrc, .env…Wed, 24 Jun 2026 08:00:00 GMThttps://antonioleiva.com/enable-gemma-thinking-mode-lm-studio-opencodehttps://antonioleiva.com/enable-gemma-thinking-mode-lm-studio-opencodeThese past few days I have been playing with Gemma 4 locally. Not just for the sake of tinkering, but to test its capabilities and see whether it could fit…Wed, 08 Apr 2026 15:10:00 GMThttps://antonioleiva.com/mcps-are-more-alive-than-everhttps://antonioleiva.com/mcps-are-more-alive-than-everThere is a weird obsession lately with declaring MCP servers dead. It's true that MCPs were overused for a while. We were in the early phase of agentic…Thu, 26 Mar 2026 11:30:00 GMThttps://antonioleiva.com/token-subsidy-future-of-aihttps://antonioleiva.com/token-subsidy-future-of-aiLately I keep hearing the same idea: this moment of "subsidized tokens" is going to end. That OpenAI and Anthropic are letting us use ChatGPT, Codex, and…Mon, 16 Mar 2026 10:30:00 GMThttps://antonioleiva.com/end-of-ides-and-agentic-clis-rise-of-adeshttps://antonioleiva.com/end-of-ides-and-agentic-clis-rise-of-adesMy grey hair probably gives it away, but I've been building software for a while. The funny thing is that when I started programming, back in 2003, IDEs were…Tue, 10 Mar 2026 11:25:00 GMThttps://antonioleiva.com/my-ai-wrote-garbage-code-and-that-was-exactly-righthttps://antonioleiva.com/my-ai-wrote-garbage-code-and-that-was-exactly-rightThere is a widespread belief that when you use AI to code, you need to ask it to do things right from the start. Clean architecture, small files, quality…Mon, 02 Mar 2026 00:00:00 GMThttps://antonioleiva.com/agentic-dev-setup-2026https://antonioleiva.com/agentic-dev-setup-2026I've been working in a way that looks nothing like what I was doing a year ago. I don't open an IDE staring at code waiting for it to compile. I don't review…Mon, 23 Feb 2026 14:00:00 GMThttps://antonioleiva.com/autonomous-dev-agents-system-enhttps://antonioleiva.com/autonomous-dev-agents-system-enI've been experimenting with something that had me curious: letting AI develop a software project almost entirely on its own.Mon, 16 Feb 2026 14:00:00 GMThttps://antonioleiva.com/hype-vs-reality-skillshttps://antonioleiva.com/hype-vs-reality-skillsLately, tools like Moltbot (formerly Clawdbot) have broken the internet. It feels like magic: an agent that uses WhatsApp, manages your calendar, and browses…Thu, 29 Jan 2026 10:00:00 GMThttps://antonioleiva.com/clawdbot-security-guidehttps://antonioleiva.com/clawdbot-security-guideI've been messing around with ClawdBot for a couple of weeks, and honestly, it's blowing my mind. If you saw my latest video on X, you know this AI manages my…Mon, 26 Jan 2026 00:00:00 GMThttps://antonioleiva.com/reorganize-repos-with-ai-github-profileshttps://antonioleiva.com/reorganize-repos-with-ai-github-profilesFor years I kept collecting side projects like it was nothing. One day you create a repo for a quick idea, another for an experiment, another for a proof of…Sat, 03 Jan 2026 00:00:00 GMThttps://antonioleiva.com/analysis-2025-goals-2026https://antonioleiva.com/analysis-2025-goals-2026Who would have told us at the beginning of the year, when AI was still just a pretty smart copilot, that we would end up watching software developers question…Tue, 30 Dec 2025 00:00:00 GMThttps://antonioleiva.com/need-ai-traininghttps://antonioleiva.com/need-ai-trainingA few days ago, Miguel Angel Duran (MiduDev) published a YouTube video claiming that AI trainings are smoke. I admire Midu a lot, and I understand why he…Sat, 27 Dec 2025 00:00:00 GMThttps://antonioleiva.com/llm-duel-gemini-opus-gpt-glmhttps://antonioleiva.com/llm-duel-gemini-opus-gpt-glmThe madness of models in the last few weeks, all claiming in benchmarks that they beat the previous one, I must admit has made me feel a bit of curiosity and…Tue, 23 Dec 2025 00:00:00 GMThttps://antonioleiva.com/closing-circle-aihttps://antonioleiva.com/closing-circle-aiLately I’ve been thinking hard about something that feels critical when you’re building with AI: 💥 you’re probably doing it wrong 💥Wed, 22 Oct 2025 00:00:00 GMThttps://antonioleiva.com/astro-ssr-coolifyhttps://antonioleiva.com/astro-ssr-coolifyWordPress has been with me for many years on my company's website, DevExpert, and we've always had our ups and downs. It's true that for building a website…Tue, 03 Jun 2025 00:00:00 GMThttps://antonioleiva.com/live-templates-android-studiohttps://antonioleiva.com/live-templates-android-studioLive Templates are a way to avoid repetitive code in development environments like Android Studio or IntelliJ. When we are writing code, there are times when…Tue, 09 Jun 2020 00:00:00 GMThttps://antonioleiva.com/view-binding-androidhttps://antonioleiva.com/view-binding-androidView Binding is a new view access mechanism that was released in conjunction with Android Studio version 3.6. Historically, there have been many ways to access…Thu, 21 May 2020 00:00:00 GMThttps://antonioleiva.com/live-answer-questionshttps://antonioleiva.com/live-answer-questionsI got many questions after an Instagram story, and decided to do a Live session answering them all. And many more. We were 50 minutes live, so join them…Sun, 25 Aug 2019 00:00:00 GMThttps://antonioleiva.com/coil-image-loader-androidhttps://antonioleiva.com/coil-image-loader-androidCoil is a new image loading library for Android development based on Kotlin and coroutines with the goal of making it simple, fast and lightweight.Tue, 13 Aug 2019 00:00:00 GMThttps://antonioleiva.com/dependency-injection-principleshttps://antonioleiva.com/dependency-injection-principlesTo understand dependency injection, you first need to learn a set of concepts that will help you realize why you need it and what's happening under the hood.Wed, 26 Jun 2019 00:00:00 GMThttps://antonioleiva.com/living-by-the-code-enrique-lopezhttps://antonioleiva.com/living-by-the-code-enrique-lopezEnrique López is a freelance Android Developer, who also writes books, articles and travels around the world to multiple events while running marathons…Mon, 24 Jun 2019 00:00:00 GMThttps://antonioleiva.com/koin-vs-daggerhttps://antonioleiva.com/koin-vs-daggerKoin is an alternative to Dagger that takes advantage of Kotlin features to make dependency injection much easier. In the video above, I explain why you need a…Thu, 13 Jun 2019 00:00:00 GMThttps://antonioleiva.com/antonio-leiva-interviewed-by-fernando-cejashttps://antonioleiva.com/antonio-leiva-interviewed-by-fernando-cejasWelcome to another episode of Droidkast LIVE. But this time I'm bringing a little different program. When I interviewed Fernando in the first Droidkast, he…Tue, 04 Jun 2019 00:00:00 GMThttps://antonioleiva.com/data-binding-on-android-to-implement-the-real-mvvmhttps://antonioleiva.com/data-binding-on-android-to-implement-the-real-mvvmData Binding is really easy and can save you from a lot of boilerplate when connecting your data to the UI, and also to update it when something changes.Wed, 15 May 2019 00:00:00 GMThttps://antonioleiva.com/google-io-2019https://antonioleiva.com/google-io-2019In this video, I show you some of the greatest announcements that were done during the first keynotes of Google I/O 2019, and I do an example with some of…Thu, 09 May 2019 00:00:00 GMThttps://antonioleiva.com/self-publishinghttps://antonioleiva.com/self-publishingSelf-publishing may be a frightening option when you decide to publish your own tech book. I've received many questions through all these years since I…Wed, 03 Apr 2019 00:00:00 GMThttps://antonioleiva.com/flutter-mobile-development-for-busy-people-droidkast-05https://antonioleiva.com/flutter-mobile-development-for-busy-people-droidkast-05Lara Martin came to tell us about her beginnings and her experience as an Android Developer at Berlin. Her talk was about Flutter! And how Flutter allows…Tue, 26 Mar 2019 00:00:00 GMThttps://antonioleiva.com/learn-kotlinhttps://antonioleiva.com/learn-kotlinCompanies are adopting it and it is nowadays the fastest growing language in the market. Here I talk about the inception of the language, the current situation…Wed, 13 Mar 2019 00:00:00 GMThttps://antonioleiva.com/what-android-devs-wish-they-had-known-when-starting-out-droidkast-04https://antonioleiva.com/what-android-devs-wish-they-had-known-when-starting-out-droidkast-04Nate Ebel was our guest on Droidkast.LIVE! He’s an Android Engineer at Pixite Apps, speaker in many events and organizer of Droidcon Boston. Probably you know…Wed, 06 Mar 2019 00:00:00 GMThttps://antonioleiva.com/modularizing-android-apps-droidkast-03https://antonioleiva.com/modularizing-android-apps-droidkast-03Joe Birch was our guest on the last episode! He’s an Android Lead at Buffer, Google Developer Expert for Android, Google Play and Flutter, instructor at…Mon, 18 Feb 2019 00:00:00 GMThttps://antonioleiva.com/kotlin-coroutineshttps://antonioleiva.com/kotlin-coroutinesKotlin coroutines are one of the most exciting features in Kotlin. With them, you can simplify the work of asynchronous tasks in an impressive way, and make…Thu, 31 Jan 2019 00:00:00 GMThttps://antonioleiva.com/constraint-motion-layout-droidkast-02https://antonioleiva.com/constraint-motion-layout-droidkast-02Huyen came to tell us how she became a software developer, her experience becoming an Android developer, and a speaker. She also told us about some of her…Wed, 23 Jan 2019 00:00:00 GMThttps://antonioleiva.com/art-of-coding-droidkast-01https://antonioleiva.com/art-of-coding-droidkast-01I had the honor to have Fernando Cejas as my first guest for Droidkast.LIVE. We talked about almost two hours about lots of things, related to his life, how to…Fri, 18 Jan 2019 00:00:00 GMThttps://antonioleiva.com/analysis-2018-goals-2019https://antonioleiva.com/analysis-2018-goals-2019Wow! This has been a pretty crazy year, and quite calm at the same time when compared to 2017. 2018 ends and it's time to take a look at the past to see how it…Tue, 01 Jan 2019 00:00:00 GMThttps://antonioleiva.com/mvvm-vs-mvphttps://antonioleiva.com/mvvm-vs-mvpOk, so now that MVVM is the standard to implement Android Apps since Google released their Guide to App architecture, I think it's time to provide some easy…Wed, 12 Dec 2018 00:00:00 GMThttps://antonioleiva.com/clean-architecture-androidhttps://antonioleiva.com/clean-architecture-androidClean architecture is a topic that never gets old in the Android world, and from the comments and questions I receive, I feel it's still not very clear.Sun, 30 Sep 2018 00:00:00 GMThttps://antonioleiva.com/world-changing-todayhttps://antonioleiva.com/world-changing-todayHi dear reader! I normally don't write this kind of blog posts in my pretty technical blog, but I think that today deserves an exception.Fri, 21 Sep 2018 00:00:00 GMThttps://antonioleiva.com/mvp-androidhttps://antonioleiva.com/mvp-androidMVP (Model View Presenter) pattern is a derivative from the well known MVC (Model View Controller), and one of the most popular patterns to organize the…Wed, 04 Jul 2018 00:00:00 GMThttps://antonioleiva.com/architecture-components-kotlinhttps://antonioleiva.com/architecture-components-kotlinI've been using Architecture Components for a while, and I must admit I love them. The Android team has managed to find a way to let us forget about lifecycles…Tue, 13 Mar 2018 00:00:00 GMThttps://antonioleiva.com/yo-dawg-heard-like-kotlinhttps://antonioleiva.com/yo-dawg-heard-like-kotlinIn November 2017, I had the chance (and luck!) of participating in a great event at Latvia: Devfest Baltics. It was awesome in many ways, but specially because…Mon, 15 Jan 2018 00:00:00 GMThttps://antonioleiva.com/analysis-2017-goals-2018https://antonioleiva.com/analysis-2017-goals-2018Believe or not, another year is coming to an end! And I like to take a look at all the things I achieved, the ones I didn't, and what I plan for the new year.Mon, 25 Dec 2017 00:00:00 GMThttps://antonioleiva.com/listeners-several-functions-kotlinhttps://antonioleiva.com/listeners-several-functions-kotlinOne question I get often is how to simplify the interaction with listeners that have several functions on Kotlin. For listeners (or any interfaces) with a…Wed, 06 Dec 2017 00:00:00 GMThttps://antonioleiva.com/kotlin-from-javahttps://antonioleiva.com/kotlin-from-javaOne of the great wonders of Kotlin is that it's fully integrated with Java. This means that although all your application code is written Java, you can create…Wed, 29 Nov 2017 00:00:00 GMThttps://antonioleiva.com/function-references-kotlinhttps://antonioleiva.com/function-references-kotlinFunction references are another of those great improvements that we get with Kotlin, which are kind of exotic when we come from Java.Wed, 22 Nov 2017 00:00:00 GMThttps://antonioleiva.com/anko-layouts-androidhttps://antonioleiva.com/anko-layouts-androidIf you're already developing Android Apps using Kotlin, you've probably heard about Anko layouts and been thinking about using them, or at least considering to…Tue, 14 Nov 2017 00:00:00 GMThttps://antonioleiva.com/kotlin-dsl-gradlehttps://antonioleiva.com/kotlin-dsl-gradleThere's been quite some months already since Gradle announced that they were working on supporting Kotlin to write Gradle Scripts, by using a version of the…Fri, 10 Nov 2017 00:00:00 GMThttps://antonioleiva.com/kotlin-android-online-coursehttps://antonioleiva.com/kotlin-android-online-courseYou may probably know that this days I'm publishing my first online course in English, Kotlin for Android Developers, based on all the knowledge I've gotten…Sat, 02 Sep 2017 00:00:00 GMThttps://antonioleiva.com/kotlin-android-extensionshttps://antonioleiva.com/kotlin-android-extensionsIf you've been developing Android Apps for some time, you're probably already tired of working with _findViewById_ in your day-to-day life to recover views. Or…Wed, 16 Aug 2017 00:00:00 GMThttps://antonioleiva.com/reasons-kotlin-androidhttps://antonioleiva.com/reasons-kotlin-androidEven now that Kotlin is an officially supported language to write Android Apps, you may still feel that there are not enough reasons for a change. Java has…Tue, 11 Jul 2017 00:00:00 GMThttps://antonioleiva.com/sealed-classes-kotlinhttps://antonioleiva.com/sealed-classes-kotlinSealed classes in Kotlin are another new concept we didn't have in Java, and open another new world of possibilities. A sealed class allows you to represent…Tue, 27 Jun 2017 00:00:00 GMThttps://antonioleiva.com/objects-kotlinhttps://antonioleiva.com/objects-kotlinKotlin objects are another element of the language that we Android developers are not familiarized with, because there is nothing like that in Java.Tue, 20 Jun 2017 00:00:00 GMThttps://antonioleiva.com/interfaces-kotlinhttps://antonioleiva.com/interfaces-kotlinThe interfaces in Kotlin will allow you to reuse more code than what you can get with Java. The reason is very simple: you can add code to your interfaces. If…Tue, 06 Jun 2017 00:00:00 GMThttps://antonioleiva.com/databases-anko-kotlinhttps://antonioleiva.com/databases-anko-kotlinTruth to be told: writing databases in Android is quite boring. All the boilerplate required to work with SQLite is far from being the most delightful thing in…Tue, 30 May 2017 00:00:00 GMThttps://antonioleiva.com/google-kotlinhttps://antonioleiva.com/google-kotlinGoogle has already expressed several times that they don't have anything against Kotlin, and that they're not preventing us from using it while the compiler…Mon, 15 May 2017 00:00:00 GMThttps://antonioleiva.com/dialogs-android-anko-kotlinhttps://antonioleiva.com/dialogs-android-anko-kotlinCreating alerts and dialogs on Android is a relatively simple task thanks to the builder, but due to the verbosity of the language it usually becomes something…Tue, 09 May 2017 00:00:00 GMThttps://antonioleiva.com/mockito-2-kotlinhttps://antonioleiva.com/mockito-2-kotlinOne of the most common issues for Kotlin, as we talked about in a previous article, is that all classes and functions are closed by default.Tue, 02 May 2017 00:00:00 GMThttps://antonioleiva.com/unit-tests-android-kotlinhttps://antonioleiva.com/unit-tests-android-kotlinOf course, Kotlin also allows us to do unit tests in a very simple way, and very similar to what we're used in Java. There are some small complications when we…Tue, 25 Apr 2017 00:00:00 GMThttps://antonioleiva.com/retrofit-android-kotlinhttps://antonioleiva.com/retrofit-android-kotlinThis is just one more example about how in Kotlin we can continue to use the same libraries we've always used in Java for Android.Tue, 18 Apr 2017 00:00:00 GMThttps://antonioleiva.com/dagger-android-kotlinhttps://antonioleiva.com/dagger-android-kotlinVirtually everyone who wants to create code on Android in a decoupled and easy-to-test way, resorts to Dagger sooner or later.Tue, 11 Apr 2017 00:00:00 GMThttps://antonioleiva.com/nullity-kotlinhttps://antonioleiva.com/nullity-kotlinIt had taken me too long to write an article to one of the most important parts of Kotlin: the treatment of nullity. Tony Hoare, the creator of the idea of…Tue, 04 Apr 2017 00:00:00 GMThttps://antonioleiva.com/lambdas-kotlin-androidhttps://antonioleiva.com/lambdas-kotlin-androidAlthough I spoke a little about it in another article, I'd like to explain in depth how lambdas work in Kotlin, and how they transform the interfaces with a…Tue, 28 Mar 2017 00:00:00 GMThttps://antonioleiva.com/operator-overload-kotlinhttps://antonioleiva.com/operator-overload-kotlinIn Kotlin, as in every language, we have predefined operators to perform certain operations. The most typical are the addition (+), subtraction (-)…Tue, 21 Mar 2017 00:00:00 GMThttps://antonioleiva.com/recyclerview-adapter-kotlinhttps://antonioleiva.com/recyclerview-adapter-kotlinAn interesting way to see how Kotlin simplifies your life is by creating a RecyclerView Adapter. You'll see that the code can be organized in such a way that…Tue, 14 Mar 2017 00:00:00 GMThttps://antonioleiva.com/property-delegation-kotlinhttps://antonioleiva.com/property-delegation-kotlinAs we've seen in previous articles, properties need a default value, they can't be declared without assigning them a value.Thu, 09 Mar 2017 00:00:00 GMThttps://antonioleiva.com/reified-types-kotlinhttps://antonioleiva.com/reified-types-kotlinOne of the limitations that most frustrates Java developers when using generics is not being able to use the type directly.Thu, 02 Mar 2017 00:00:00 GMThttps://antonioleiva.com/when-expression-kotlinhttps://antonioleiva.com/when-expression-kotlinThe switch expression in Java, and especially in Java 6, are extremely limited. Apart from a very short amount of types, it can not be used for anything else.Thu, 23 Feb 2017 00:00:00 GMThttps://antonioleiva.com/kotlin-realm-extensionshttps://antonioleiva.com/kotlin-realm-extensionsWhen someone asks me what I like the most about Kotlin, I find it hard to highlight a single feature. Data classes, lambdas, type inference, delegates…Tue, 14 Feb 2017 00:00:00 GMThttps://antonioleiva.com/generic-functions-kotlinhttps://antonioleiva.com/generic-functions-kotlinThe combined use of several Kotlin features mixed with the use of generics allow to create functions that will greatly simplify your code, while maintaining…Wed, 08 Feb 2017 00:00:00 GMThttps://antonioleiva.com/functional-operations-collections-kotlinhttps://antonioleiva.com/functional-operations-collections-kotlinI must admit that, for me, one of the most frustrating things when writing Java code is the list handling. Java 8 has some improvements in this respect with…Thu, 02 Feb 2017 00:00:00 GMThttps://antonioleiva.com/data-classes-kotlinhttps://antonioleiva.com/data-classes-kotlinWe've already seen the classes in an earlier article, but data classes go a little further in helping us simplify our code.Wed, 25 Jan 2017 00:00:00 GMThttps://antonioleiva.com/anko-background-kotlin-androidhttps://antonioleiva.com/anko-background-kotlin-androidAnko is an Android library written in Kotlin by Jetbrains, that can be used for a lot of different stuff. Its main feature is to create views by code using a…Thu, 19 Jan 2017 00:00:00 GMThttps://antonioleiva.com/extension-functions-kotlinhttps://antonioleiva.com/extension-functions-kotlinExtension functions are a really cool feature that Kotlin provides, and that you'll find yourself using a lot when writing Android Apps.Wed, 11 Jan 2017 00:00:00 GMThttps://antonioleiva.com/lambdas-kotlinhttps://antonioleiva.com/lambdas-kotlinLambdas are one of the most powerful tools in Kotlin, and in any other modern language, since it allows modelling functions in a much simpler way.Thu, 05 Jan 2017 00:00:00 GMThttps://antonioleiva.com/custom-views-android-kotlinhttps://antonioleiva.com/custom-views-android-kotlinCuando vimos el artículo sobre clases, puede que recuerdes que en general solo se usa un constructor. Este es un problema para crear custom views.Tue, 27 Dec 2016 00:00:00 GMThttps://antonioleiva.com/kotlin-integrations-android-sdkhttps://antonioleiva.com/kotlin-integrations-android-sdkKotlin not only simplifies the code you create on this language, but also the Java code you use from Kotlin. How does this work? It simply uses some generic…Mon, 19 Dec 2016 00:00:00 GMThttps://antonioleiva.com/classes-kotlinhttps://antonioleiva.com/classes-kotlinClasses in Kotlin are as simple as possible so that you can express the maximum amount of logic with the less code possible.Wed, 07 Dec 2016 00:00:00 GMThttps://antonioleiva.com/variables-kotlinhttps://antonioleiva.com/variables-kotlinIn this second chapter we will see how variables work in Kotlin, what is _val_ and _var_ , and when to use one or the other.Mon, 28 Nov 2016 00:00:00 GMThttps://antonioleiva.com/create-first-android-project-kotlinhttps://antonioleiva.com/create-first-android-project-kotlinToday I'm starting a set of 30 articles about Kotlin for Android Developers (KAD). In these articles I'll be talking about the most important parts of the…Mon, 21 Nov 2016 00:00:00 GMThttps://antonioleiva.com/recyclerview-diffutil-kotlinhttps://antonioleiva.com/recyclerview-diffutil-kotlinAs you may know, the Support Library 24 included a new really handy class called DiffUtil, which will let you get rid of the boring and error prone of…Mon, 12 Sep 2016 00:00:00 GMThttps://antonioleiva.com/kotlin-ongloballayoutlistenerhttps://antonioleiva.com/kotlin-ongloballayoutlistenerToday a mate asked me how he could do an OnGlobalLayoutListener properly without incurring in the need of too much boilerplate. This was a tricky question…Tue, 15 Mar 2016 00:00:00 GMThttps://antonioleiva.com/kotlin-awesome-tricks-for-androidhttps://antonioleiva.com/kotlin-awesome-tricks-for-androidI've been talking a lot about Kotlin in this blog, but now that Google is also talking about Kotlin, and that Kotlin 1.0 RC has been released, there's no doubt…Thu, 04 Feb 2016 00:00:00 GMThttps://antonioleiva.com/recyclerview-listenerhttps://antonioleiva.com/recyclerview-listenerIf you've used a RecyclerView, you may know that they don't have a setOnItemClickListener as ListView had, so we have to create our own way to do it. Many…Mon, 14 Dec 2015 00:00:00 GMThttps://antonioleiva.com/plaid-kotlin-2https://antonioleiva.com/plaid-kotlin-2We saw pretty amazing improvements in the first article thanks to the use of Kotlin in an activity. But the thing is that these kind of classes are not the…Tue, 17 Nov 2015 00:00:00 GMThttps://antonioleiva.com/plaid-kotlin-1https://antonioleiva.com/plaid-kotlin-1People often ask me about the advantages of writing Android Apps using Kotlin. The thing is that I never directly converted an Android App from Java to Kotlin…Tue, 03 Nov 2015 00:00:00 GMThttps://antonioleiva.com/voice_search_google_nowhttps://antonioleiva.com/voice_search_google_nowOne of the awesome things about Android is the ability we have to integrate our apps into the ecosystem in many different ways. Apps can talk among each…Wed, 14 Oct 2015 00:00:00 GMThttps://antonioleiva.com/collection-operations-kotlinhttps://antonioleiva.com/collection-operations-kotlinLambdas are a great powerful tool to simplify code, but also to do things that were not possible before. We talked about them in the first part of the series…Tue, 29 Sep 2015 00:00:00 GMThttps://antonioleiva.com/layout-animations-on-recyclerviewhttps://antonioleiva.com/layout-animations-on-recyclerviewSince Material Design was presented, I've been amazed by the animations some videos showed when populating a grid. If you haven't seen it, it consists of a…Tue, 08 Sep 2015 00:00:00 GMThttps://antonioleiva.com/functional-programming-android-kotlin-lambdashttps://antonioleiva.com/functional-programming-android-kotlin-lambdasThe functional programming can be a really powerful tool when used properly, and though Java 8 includes some functional tools, as you can imagine Android…Tue, 01 Sep 2015 00:00:00 GMThttps://antonioleiva.com/branded-launch-screenhttps://antonioleiva.com/branded-launch-screenTalking about splash screens in Android has always been rather controversial. On one hand, you can find marketing teams and customers, avid of showing their…Sun, 09 Aug 2015 00:00:00 GMThttps://antonioleiva.com/operator-overloading-kotlinhttps://antonioleiva.com/operator-overloading-kotlinKotlin has a fixed number or symbolic operators we can easily use on any class. The way is to create a function with a reserved name that will be mapped to the…Wed, 05 Aug 2015 00:00:00 GMThttps://antonioleiva.com/functional-operations-viewgroup-kotlinhttps://antonioleiva.com/functional-operations-viewgroup-kotlinCollections, iterators, arrays, sequences... all share a good set of useful functions that help do transformations, sortings and other kind of operations over…Wed, 29 Jul 2015 00:00:00 GMThttps://antonioleiva.com/api-request-kotlinhttps://antonioleiva.com/api-request-kotlinKotlin is a really powerful language aimed to write more code using less boilerplate. And this is specially true in Android. Apart from the language itself and…Tue, 21 Jul 2015 00:00:00 GMThttps://antonioleiva.com/kotlin-android-developershttps://antonioleiva.com/kotlin-android-developersHi dear reader. Today it's a very special post, because I'm really happy to announce the release of my first book: Kotlin for Android DevelopersTue, 14 Jul 2015 00:00:00 GMThttps://antonioleiva.com/collapsing-toolbar-layouthttps://antonioleiva.com/collapsing-toolbar-layoutOne of the most amazing things about Design Support Library is that we can create lively animated UIs with some simple configuration in XML. No code nor deep…Thu, 09 Jul 2015 00:00:00 GMThttps://antonioleiva.com/coordinator-layouthttps://antonioleiva.com/coordinator-layoutToday, I´d like to take a look to the Coordinator Layout and some basic ideas about App Bar Layout. Together, they can do some nice animated effects. In this…Tue, 30 Jun 2015 00:00:00 GMThttps://antonioleiva.com/floating-action-buttonhttps://antonioleiva.com/floating-action-buttonIf you already read the first article regarding Navigation View, you may be wondering what else the new Android Design support library can do for you. In this…Tue, 09 Jun 2015 00:00:00 GMThttps://antonioleiva.com/navigation-viewhttps://antonioleiva.com/navigation-viewGoogle I/O 2015 has brought a whole new set of tools for Android Developers which are meant to make our lives easier. I´d like to devote a set of articles to…Sun, 31 May 2015 00:00:00 GMThttps://antonioleiva.com/kotlin-android-custom-viewshttps://antonioleiva.com/kotlin-android-custom-viewsAfter reading what extension functions and default values can do for you, you might be wondering what´s next. As we talked in first article about Kotlin, this…Thu, 07 May 2015 00:00:00 GMThttps://antonioleiva.com/kotlin-android-extension-functionshttps://antonioleiva.com/kotlin-android-extension-functionsNow that you know the basics about Kotlin and how to configure your project, it´s time to talk about some interesting things that Kotlin can do for us and Java…Mon, 06 Apr 2015 00:00:00 GMThttps://antonioleiva.com/kotlin-android-create-projecthttps://antonioleiva.com/kotlin-android-create-projectAfter getting a light idea of what Kotlin is and what it can do for us: Introduction"), it´s time to configure Android Studio to help us develop Android apps…Mon, 23 Mar 2015 00:00:00 GMThttps://antonioleiva.com/kotlin-for-android-introductionhttps://antonioleiva.com/kotlin-for-android-introductionKotlin is one of the many JVM based languages that are starting to emerge as a possible Java successor in Android development. Java is one of the most used…Mon, 09 Mar 2015 00:00:00 GMThttps://antonioleiva.com/android-multiple-resource-foldershttps://antonioleiva.com/android-multiple-resource-foldersIn large projects, it´s very common that the resources folder grows and grows and becomes hard to organize and maintain. There is a very simple way to create…Tue, 03 Mar 2015 00:00:00 GMThttps://antonioleiva.com/materialize-apphttps://antonioleiva.com/materialize-appOn January 31st, I was asked to give a talk at MaterialFest, and awesome event organised by GDG Cádiz (Spain), where developers and designers were all together…Sun, 08 Feb 2015 00:00:00 GMThttps://antonioleiva.com/material-design-everywherehttps://antonioleiva.com/material-design-everywhereWe were all hoping that the new support APIs included Material Design, the new theme adopted since Android 5.0 Lollipop. And it luckily happened: this new…Fri, 17 Oct 2014 00:00:00 GMThttps://antonioleiva.com/recyclerviewhttps://antonioleiva.com/recyclerviewGoogle I/O this week brought a lot of exciting news about Android, and we probably need quite some time to get used to what Android L is bringing.Sun, 29 Jun 2014 00:00:00 GMThttps://antonioleiva.com/dagger-3https://antonioleiva.com/dagger-3If you've been following this series, you already read about dependency injection basics on part 1") and Dagger fundamentals on part 2"). This last part about…Thu, 19 Jun 2014 00:00:00 GMThttps://antonioleiva.com/dagger-android-part-2https://antonioleiva.com/dagger-android-part-2If you read first post about dependency injection"), you will probably be looking for some real code. There are some beautiful examples about coffee makers at…Thu, 12 Jun 2014 00:00:00 GMThttps://antonioleiva.com/dependency-injection-android-dagger-part-1https://antonioleiva.com/dependency-injection-android-dagger-part-1On this new series I will explain what dependency injection is, what its main purpose is and how to use it on an Android project by using Dagger the best know…Wed, 04 Jun 2014 00:00:00 GMThttps://antonioleiva.com/swiperefreshlayouthttps://antonioleiva.com/swiperefreshlayoutLast support library update has included an interesting and unexpected layout: SwipeRefresLayout. It is a standard way to implement the common Pull to Refresh…Fri, 28 Mar 2014 00:00:00 GMThttps://antonioleiva.com/textview_power_drawableshttps://antonioleiva.com/textview_power_drawablesTextViews are one of the basis of Android UI framework. Buttons, EditTexts, RadioButtons are, indeed, TextViews. And they are also one of the most powerful…Thu, 30 Jan 2014 00:00:00 GMThttps://antonioleiva.com/lead-your-android-app-to-success-with-google-analytics-part-2https://antonioleiva.com/lead-your-android-app-to-success-with-google-analytics-part-2First part was about how to integrate Google Analytics in your Android App"). I will now explain how to get the most out of it by registrating visits from any…Sun, 13 Oct 2013 00:00:00 GMThttps://antonioleiva.com/lead-android-app-success-google-analytics-part-1https://antonioleiva.com/lead-android-app-success-google-analytics-part-1Analytics lets you know how the user interacts with your application and that may help you take some decisions, such as:Sun, 06 Oct 2013 00:00:00 GMThttps://antonioleiva.com/actionbarcompat-migrating-actionbarsherlockhttps://antonioleiva.com/actionbarcompat-migrating-actionbarsherlockAfter learning some basic rules to work with ActionBarCompat: Action Views"), you will probably need to migrate some apps from ActionBarSherlock to…Tue, 30 Jul 2013 00:00:00 GMThttps://antonioleiva.com/actionbarcompat-action-viewshttps://antonioleiva.com/actionbarcompat-action-viewsIn the first part of this tutorial series I talked about how to use _ActionBarCompat_ in our projects: How to use"). Once you have set the theme, extended…Sun, 28 Jul 2013 00:00:00 GMThttps://antonioleiva.com/actionbarcompat-how-to-usehttps://antonioleiva.com/actionbarcompat-how-to-useGoogle has released a new version of its Support Library and it finally includes ActionBarCompat. We don't know if ActionBarSherlock days of glory are over…Thu, 25 Jul 2013 00:00:00 GMThttps://antonioleiva.com/unveiling-bandhook-foreground-any-layouthttps://antonioleiva.com/unveiling-bandhook-foreground-any-layoutAfter releasing Bandhook on Play Store, I received many questions about how to implement some parts of the interface, so I decided to create a series of…Wed, 10 Jul 2013 00:00:00 GMThttps://antonioleiva.com/android-unit-testing-using-robolectric-introductionhttps://antonioleiva.com/android-unit-testing-using-robolectric-introductionUnit tests have become an invaluable tool in recent times due to the increasing complexity of coding and new agile methodologies, which keep the code alive…Sun, 07 Jul 2013 00:00:00 GMT