tag:speakerdeck.com,2005:/renaudmathieu tag:speakerdeck.com,2005:Talk/1527308 2026-04-09T09:32:53-04:00 2026-04-09T09:39:10-04:00 In 2026, a loading spinner in the subway isn’t “bad connectivity”. It’s a cloud-first app showing its limits. This talk is about offline-first architecture: write locally first, and treat sync as a background process, not a user-blocking gate. The hard part is concurrency: Alice edits a to-do offline while Bob checks it off. Who wins? Definitely not “last-write-wins”. We will unpack CRDTs, a data structure designed to merge changes without conflicts and converge reliably. Then we go hands-on with Kotlin Multiplatform by designing a practical local-first architecture, local persistence, a sync engine built around deltas, and the real-world challenges (tombstones, pruning, UI “glitches”). The goal: one robust, shared sync core for Android, iOS, the Web, and apps that stays trustworthy even when the network isn’t. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1458386 2025-10-29T09:11:48-04:00 2025-10-29T09:17:14-04:00 Let’s be real: building amazing tech isn’t just about writing great code; it’s about having a team that works well together. As a freelancer, I’ve faced some of the same issues popping up repeatedly in different teams or companies. I will share the most common struggles tech teams face daily. Whether you’re a developer, a manager, or just someone who wants to improve the workplace, you’ll leave with practical tips to help your team work better together, stay motivated, and hit your goals! Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1445871 2025-10-01T05:30:13-04:00 2025-10-01T05:33:38-04:00 Building a customer-facing music player requires a high level of precision in terms of design and music controllers. In this talk, we’ll level up the volume on creativity as we design and develop a fully functional music player with Compose Multiplatform. From crafting a UI that’s in tune with user needs to building a music controller that never misses a beat, this session will have you grooving to the rhythm of Kotlin Multiplatform 💃🕺 Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1382751 2025-06-12T07:27:15-04:00 2025-06-12T07:35:49-04:00 Préparez vos partitions, dans cette conférence, nous mettrons l’accent sur la créativité en concevant et en développant un lecteur de musique entièrement fonctionnel en Kotlin avec Compose Multiplatform. Au programme, une interface utilisateur qui groove comme jamais, un contrôleur de musique toujours au tempo, et surtout… une session qui vous fera vibrer au rythme de Kotlin Multiplatform 💃🕺 Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1353780 2025-04-13T04:07:40-04:00 2025-04-15T02:45:26-04:00 Soyons honnêtes : construire de super produits n’est pas juste une question de beau code, c’est surtout une question d’équipe qui fonctionne bien ensemble. En tant que freelance, j’ai pu constater que certains problèmes sont souvent les mêmes dans différentes équipes et dans différentes entreprises. Au travers cette session, je partagerai les difficultés les plus courantes auxquelles les équipes techniques sont confrontées au quotidien et comment les résoudre ! Que vous soyez développeur, manager ou simplement quelqu’un qui souhaite améliorer l’ambiance de travail, vous repartirez avec des conseils pratiques pour aider votre équipe à s’améliorer ! Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1197700 2024-06-07T14:09:18-04:00 2024-06-07T14:20:12-04:00 The WebRTC project allows developers to build strong voice and video communication solutions by facilitating the transmission of data between peers. During this talk, we will discover the WebRTC project, its design, and how to implement a simple mobile app in a Kotlin Multiplatform project. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1176862 2024-04-29T06:00:00-04:00 2024-04-29T06:01:46-04:00 Ready to play and learn with Compose Multiplatform? Let’s discover the Gesture APIs to craft our very own joystick. This hands-on session is perfect for developers keen on improving their Compose skills across platforms. You'll get to mix a bit of trigonometry fun with the practical magic of Compose Multiplatform, applicable for both iOS and Android. Come along for an adventure in coding - it's going to be educational, practical, and most importantly, a lot of fun! Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1046851 2023-07-06T08:48:18-04:00 2023-07-06T09:16:14-04:00 Material 3 was announced on October 28, 2021, and how come we developers don't seem to be in a rush to transition to Material 3? Is the adoption slow because our designers don't see much value in it or because we developers are already putting our efforts into a transition to Jetpack Compose? In this talk, we will see how Material Design has evolved over the year and we will provide in deep dive into Material 3. We will then delve into the new components and patterns introduced in Material 3, such as the new `SearchBar`, `DatePicker`, and `BottomSheet`. We will also discuss how Material 3 supports the latest Android platform features, including a foldable device theming system. We will explore how Material 3 can be used to enhance user experience. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/1021114 2023-04-27T11:59:08-04:00 2023-07-08T13:47:24-04:00 One common task in Android app development is working with Date objects, and Kotlin provides several options for managing it. In this talk, we will explore the different ways to represent and manipulate dates in Kotlin, including using the built-in java.util.Date class, the third-party Joda-Time and ThreeTen libraries, and the java.time package introduced in Java 8. We will also discuss common problems, and handling time zones. By the end of this talk, attendees will have a strong understanding of how to effectively manage dates in their Kotlin Android apps. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/598148 2020-01-30T04:05:12-05:00 2020-01-30T04:18:25-05:00 Android does not provide a native solution to detect barcodes in your application. However, some barcode image processing libraries are available but it is not always easy to use it for top performance. Through this talk, we will see how to implement barcode detection in your Android application from camera management to optimization of barcode recognition thanks to machine learning. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/496817 2019-02-22T09:19:17-05:00 2019-02-22T09:32:10-05:00 From principles to implementation, the new Navigation Architecture Component helps to design the interactions that allow users to navigate across, into, and back out from the different pieces of content within the app. Renaud will explore the basics and then dive into specific use cases such as deep-linking, manipulating the back-stack or even providing safe arguments. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/440657 2018-04-24T09:24:47-04:00 2018-04-24T09:29:50-04:00 Creating a personal Android app requires us to solve a lot of common challenges. Sometimes some of these challenges require so much time that we start to forget about the product we are building. Firebase can act as a toolbox to give functionality like analytics, databases, messaging and crash reporting so we can move quickly and focus on our users. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/374782 2017-01-05T11:02:18-05:00 2017-01-05T11:03:37-05:00 Android runs on many devices in many regions. Any application should handle text and numbers in ways appropriate to the locales where the app is used. Using a Localization management platform to manage the String resources brings many benefits: - Automate. New strings can be put to your codebase automatically (#FailFast) - Collaborate. Allows many people to work on your translation project (translators, product team, etc.) - Statistics. So you don’t miss what is important See http://renaudmathieu.fr/android-best-practices-string-resources-cheat-sheet/ for further details. Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/379982 2017-02-17T06:20:34-05:00 2017-02-17T06:27:03-05:00 Push notifications are more effective than you think. Businesses are facing an app engagement crisis. To overcome this, brands are increasingly turning to tactics such as push notifications to re-engage lapsed users. This talk is about best practices takeaways and push notification strategy here at Viadeo Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/342437 2016-05-19T07:59:52-04:00 2016-05-19T08:01:05-04:00 The most important announcements from Google I/O 201 regarding Android platform Renaud MATHIEU (@renaudmathieu) tag:speakerdeck.com,2005:Talk/330791 2016-02-29T04:13:24-05:00 2016-02-29T04:14:16-05:00 AWS device farm, Espresso, UiAutomator, Android July 2015 Renaud MATHIEU (@renaudmathieu) 2026-04-09T09:32:53-04:00