droidCon Berlin 2019
2019-07-01..2019-07-03
Berlin, Germany
[droidcon Berlin 2015, droidcon Berlin 2016, droidcon Berlin 2018, droidCon Berlin 2019, droidcon Berlin 2021, droidcon Berlin 2022, droidcon Berlin 2023, droidcon Berlin 2024, droidcon Berlin 2025]
| title | author | length |
|---|---|---|
| I have no idea what my app is doing ¯\_(ツ)_/¯ - Protecting your application from unintended side eff | Nicola Corti | 31m |
Practical checklist for preventing unintended app behavior: inspect real HTTP traffic with Charles proxy or on-device Chucker; review the merged Android… | ||
| Navigation in Modular Applications with Deep Linking | Damian Burke | 16m |
Deep linking is presented as the pragmatic way to decouple navigation in heavily modular or dynamic feature modules apps, avoiding compile‑time dependencies… | ||
| A day in the life of a mobile reverse engineer | Oliver Tuchon | 29m |
Shows how Google gets APKs from Play, OEM system images and alternative stores, scans 500k apps/day with ML then escalates ambiguous cases to manual reverse… | ||
| Building an Assurance and Secure Development Program | Sean Smith | 38m |
Covers how Android builds an assurance program by combining an SDL, threat modeling with STRIDE, and concrete tooling: Haiku fuzzing on ~200 devices for native… | ||
| Tackling Android Development at Scale | Fábio Carballo | 37m |
Android team grows from four to twenty-seven engineers in a year and a half and hits 500% growth, forcing changes to architecture, workflow and tooling… | ||
| Adapting Your Apps for Android Q Privacy Requirements | Nicole Borrelli | 19m |
Android Q makes concrete changes: location gains an only-while-in-use permission and foreground services must declare a foreground-service metadata flag to… | ||
| Dealing with multiple languages and currencies in the context of subscriptions | Neto Marin | 35m |
Step-by-step checklist for selling subscriptions internationally: prepare strings XML, RTL layouts, localized number/date formats and smaller APKs (aim ~10 MB… | ||
| Why we failed at modularizing our app. An honest retrospective. | Marcos Holgado | 39m |
Sky attempts to modularize a multi-flavor Android app and fails first because the team uses flavors to share code, picks the wrong first modules (streaming is… | ||
| Make your app smarter | Francessco Romano | 29m |
On-device AI uses Huawei’s HiAI stack: HiAI Foundation compiles models (TensorFlow/Caffe2/PaddlePaddle/CoreML) into an offline NPU format supporting 140+… | ||
| Libraries for K/N citizens | Enrique López Mañas | 38m |
Current state of Kotlin/Native libraries: JetBrains and Touchlab provide the core ecosystem while community projects supply SQLDelight, Ktor (client)… | ||
| Incorporating Material Theming into Custom Views | Nick Rout | 33m |
Custom ColorPickerView is refactored to follow Material Theming by replacing hard-coded draws and widgets with MDC-Android primitives, using MaterialButton and… | ||
| Building SDKs - The Kotlin Way | Jossi Wolf | 22m |
Explains concrete Kotlin tactics for stable SDKs: use @Experimental and @UseExperimental to surface risky APIs, annotate and supply @Deprecated(… | ||
| Tracking Regressions and Improving UI Performance using Benchmarking Approach | Aziz Murtazaev | 37m |
Benchmarks measure actual UI costs (create/bind/layout or Litho lifecycle: create/layout/mount) and catch regressions that tests miss: a newsfeed header moves… | ||
| Customer Driven Development : What, Why & How? | Isha Khanna | 27m |
Presents concrete A/B testing practice: a fill‑in hypothesis template, choosing net rentals per day as a primary metric, and using stages / first‑pixel… | ||
| Flowing in the Deep | Hannes Dorfmann, Gabriel Ittner | 39m |
Shows how Kotlin Flow (built on Coroutines) implements streams: uses flow builder with suspendable collect/emit pair, reimplements map (example multiplies five… | ||
| Write awesome tests | Jeroen Mols | 40m |
Three concrete rules: tests run under one second (plain JVM not emulator, avoid network DB sleeps), tests stay fast, focused, reliable (one assertion per… | ||
| Deep diving into the Kotlin Coroutines API | Filip Babić | 40m |
Covers the Kotlin Coroutines API and its internals with concrete examples: shows how launch/async builders create coroutines, how a Job and Dispatchers entry… | ||
| Grox: a library to manage the state of Java / Android apps | Alin Turcu | 29m |
Grox is an open source Java/Kotlin library that provides a unidirectional state machine with a Store that atomically replaces immutable states, serializes… | ||
| MVI made for Android | Akshay Chordiya | 18m |
Combines MVI state pipeline with Android architecture components so the UI uses ViewModel + LiveData while keeping RxJava (or coroutines/Flow) confined to… | ||
| Build apps for Billions | Sourabh Gupta | 41m |
Moves heavy splash art to the launcher icon and migrated SDKs to background to unblock the main thread, cutting launch time by ~53% and saving 200–500 ms from… | ||
| Android and the WebView | Erik Hellman | 39m |
Recommends using Chrome Custom Tabs (AndroidX Browser) for remote HTTPS links, with service warm up to preload pages; enables setWebContentsDebuggingEnabled… | ||
| Let your design evolve, adopt a Design System! | Jean-Baptiste Vincey | 20m |
Deezer builds a reusable Design System implemented as an Android library called a UI Kit that follows Atomic Design via a Lego metaphor, with an interactive… | ||
| Think of the next billion users: Building for Low End devices | Frank Tamre | 35m |
Half the next billion come online on $25–$80 phones with 512 MB–1 GB RAM and tiny storage, often on 2G/edge connectivity or dual‑SIM setups; users share media… | ||
| Step Up your tooling | Pascal Welsch | 19m |
A practical lineup of ten concrete replacements: use Discord instead of Slack for free unlimited history plus voice and group video channels; prefer IntelliJ… | ||
| Nitrogen in your (test) pyramid. | Enrico Bruno Del Zotto | 26m |
Shows a concrete way to run the same Espresso UI tests on the JVM and in CI by adding the instrumentation test sources to the unit-test source set and using… | ||
| Coroutines + Testing = ❤️ | Sean McQuillan | 45m |
Explains the design of kotlinx-coroutines-test and how to write deterministic coroutine tests using Room, LiveData builder and Retrofit fakes; shows using… | ||
| Building a cross-platform DroidCon app using Flutter | Rohan Taneja | 32m |
Built a working DroidCon Berlin 2019 app for Android, iOS and web in about 72 hours for Android iOS web using Flutter; data is moved from provided Droidcon… | ||
| Getting Started with CameraX | Oscar Wahltinez, Caren Chang | 25m |
CameraX is a Jetpack library compatible back to Android L and claims 70% fewer lines of code versus Camera2 while standardizing behavior via a CameraX testing… | ||
| MotionLayout: Animation made easy | Luiz Santana | 19m |
MotionLayout (ConstraintLayout 2.0) makes complex Android animations declarative by describing transitions in a motion scene XML and triggering them with… | ||
| Android Studio Super Shortcuts | Yugo Matsuda, Saiki Iijima | 38m |
Live demos show Android Studio shortcuts that replace mouse work and speed routine edits, refactors and debugging on a real 700,000+ line codebase, claiming up… | ||
| Modularization for dynamic delivery | Ben Weiss | 43m |
Switching to App Bundle and Play’s bundle tool reduces shipped bytes dramatically — Plaid drops about 64% file size savings just by bundling and… | ||
| Embrace the WorkManager | Pietro Maggi | 45m |
WorkManager reaches stable in 2019 and targets API 14+, offering Worker, CoroutineWorker, and RxWorker (runtime 2.0.1, 2.1 RC adds features). It guarantees… | ||
| Measure What Matters with Jetpack Benchmark (Lightning) | JB Lorenzo | 20m |
Uses Jetpack Benchmark to measure real interactions on the OLX app: scrolling and randomized clicks across a mock dataset, with output in nanoseconds and a… | ||
| Developing Themes with Style | Nick Butcher, Chris Banes | 46m |
Explains why themes (semantic variables applied to a context) beat styles (view-only key/value maps) for app-wide branding, shows how to use theme overlays and… | ||
| What ~new~ strange things one can find in AndroidX package. | Aleksander Piotrowski | 40m |
Covers concrete, usable surprises in AndroidX: VersionedParcelable (formerly SafeParcelable) is a Java-focused parcel format that survives field changes and… | ||
| Tablets, Desktops, Foldables Oh My! | Pietro Maggi | 30m |
Android on phones, tablets, Chrome OS and foldables requires concrete changes: handle configuration changes instead of relying on relaunch, set… | ||
| "Go(lang) for mobile" | Vignesh Ramachandra, Jyoti Dubey | 20m |
Shared business logic compiles to native artifacts using gomobile bind producing AAR and .framework packages that include a .so runtime and JNI stubs; Cgo acts… | ||
| What is new with UI in Android Q. New Features and APIs. | Manuel Vicente Vivo, Murat Yener | 41m |
Covers concrete Android Q UI changes and how to use them: foldables require handling configuration/resizability (android:resizeableActivity is true by default)… | ||
| Jumping into Jetpack Compose way too early to see what's inside | Louis Tsai | 19m |
Jetpack Compose replaces views with composable functions that annotate Kotlin code, run as plain functions and draw directly to a canvas; the system is split… | ||
| Iterative Mobile Development | Andrea Falcone | 36m |
Argues that shipping one feature fast beats waiting for five finished ones by limiting work in progress and aligning the whole team on a single goal, shows… | ||
| Google Data Collection on Android | Darryn Campbell | 34m |
Creates a VPN man-in-the-middle with a custom certificate authority on a Nougat 7.1 device, captures and decrypts most HTTPS traffic but hits a wall because… | ||
| Building Android apps from your local terminal with the CLI | Krisztián Gödrei, Tamás Papik | 14m |
Shows using the Bitrise CLI to create and run Android builds locally: the demo runs bitrise init to generate bitrise.yml and bitrise-secrets.yml, auto-detects… | ||
| I Built the Exact Same App in Kotlin, Nativescript and Flutter | Arnav Gupta | 36m |
Built the same realworld.io Medium clone three ways: Kotlin native (Kotlin + XML), NativeScript (TypeScript + Vue), and Flutter (Dart). Finished apps match… | ||
| Designing in the Age of Machines | Panayotis Tzinis | 24m |
Team builds a Google Clips-inspired ML system for astronauts on the ISS, faces 1.5 years of regulation work and a year where models predict well but the… | ||
| CoCoS - Remote configuration with super powers | Sebastian Paulus, Yusuf Figanioglu | 27m |
CoCoS delivers a remote configuration platform that matches JSON contexts against rules stored in Elasticsearch and returns merged JSON responses at runtime… | ||
| Backup, Restore, Migrate | Al Sutton | 14m |
Android device migration focuses on using Auto Backup plus an encrypted Cloud Key Vault so app data is encrypted on-device and Google cannot read backups… | ||
| Better Together | Niamh Power | 25m |
Monzo claims cross‑disciplinary squads and tool unification cut platform drift and make both apps closer to feature parity. They move Android and iOS CI to… | ||
| CI experts on Android and iOS dependency management | Martin Jeret | 18m |
Measure shows a simple Flutter app with a Firestore dependency jumps iOS debug builds from ~50s to ~20+ minutes and release builds to ~40–42 minutes, while… | ||
| Android with a side of Flutter, please | Filip Hráček | 34m |
Shows how to drop a single Flutter activity or view into an existing Android app using the add to app workflow (flutter create module, tweak Gradle and Java 8… | ||
| Inject Basics! | Jitin Sharma | 39m |
Shows how to do dependency injection with raw Kotlin and a small Android app (dog photos, later cats) handling networking, storage and threading without a… | ||
| Fluttering at 60 FPS | Krzysztof Sroka | 40m |
Explains why 60 FPS really means a 16 ms budget and shows how Flutter splits work across the UI and GPU threads so slow Dart code or expensive clips kill… | ||
| Kotlin Not-to-Do List - What we should avoid doing in Kotlin | Marcin Moskała | 42m |
Kotlin code warns against hiding important details: declare public API types instead of relying on type inference (author once had to read bytecode to find a… | ||
| Getting StARted with AR Foundation | Liam Sorta | 20m |
Unity's AR Foundation is a preview Unity package that wraps ARKit and ARCore, letting teams build cross‑platform AR using AR Session, AR Session Origin and… | ||
| The Silver Bullet That Wasn’t - the story of Hubs | Elin Nilsson | 39m |
A component-driven, cross‑platform UI system uses a backend-driven JSON schema to render native widgets via a core hubs adapter + hubs config on Android and a… | ||
| Creating Smarter Applications | Maoz Tamir | 42m |
Shows how to add real on‑device ML using TensorFlow Lite and Google ML Kit (Firebase) with cloud labels ~40,000 vs on‑device ~10,000, plus Colab and… | ||
| Mobile at Scale with React Native & Multi-Module Architecture | Lev Vidrak | 34m |
Wix runs a single React Native app that ~80 mobile developers across ~20 teams ship to stores daily by separating an Engine (native APK/App build, shared… | ||
| Mobile Test Automation at the BBC: Then, Now and Next | Jitesh Gosai | 30m |
BBC moves from flaky UI automation to a component strategy that speeds releases by testing at two levels and deploying real APKs to devices. The team wraps… | ||
| Improving Android Build Performance | Volker Leck | 40m |
Shows concrete fixes and tools: use Gradle profiler to automate scenarios, upload results to build scans, and run Gradle 5.5 with Android Gradle Plugin 3.4.1… | ||
| From OOP To FP | Adnan A M | 44m |
Explains a practical path from OOP to FP in Kotlin, showing the team’s year‑long migration and concrete wins: purer functions that simplify unit tests… | ||
| Where the Heck Am I? Understanding and Managing Location in Your Application | Richard Süselbeck | 37m |
Explains exactly how satellite positioning computes a fix: 4 satellites for trilateration, atomic-clock timing corrected by relativity (a 35 µs/day offset… | ||
| Understanding Gradle and writing your own Gradle Plugin | Niklas Baudy | 33m |
Shows how to write a Gradle plugin in Kotlin that compiles into a jar with a META-INF plugin properties file, publishes to mavenLocal, registers tasks using… | ||
| Android... without Google | David Branton | 37m |
Claims a single codebase can target Google and non‑Google Android by using product flavors, manifest merging, interfaces and DI, and shows that maps, location… | ||
| Hire Better Faster Stronger | Anastasia López, Vivien Barousse | 44m |
Calls to ditch the top 5% myth and define hiring by team‑specific core requirements and concrete nice‑to‑haves, not vague prestige metrics. Job adverts state… | ||
| Minimalism Driven Development | Miguel Beltran | 34m |
Minimalism-driven development argues for concrete choices: avoid shipping heavy frameworks—Electron bundles Chrome per app—and inspect hidden baggage like a… | ||
| From managing code dependencies to managing people | Sebastiano Gottardo | 37m |
A junior people manager recounts concrete actions and results from the first 10 months of the role: running frequent one‑on‑ones, owning hiring (team grows… | ||
| Your Strengths Include: Work/Life Balance | Parth Padgaonkar | 28m |
Defines work/life as three buckets and uses an interactive balance wheel self‑assessment (mobile page) plus a tiny survey of about five peers to back practical… | ||
| Android on the Road: Playing Music with UAMP in Cars | Nicole Borrelli | 13m |
Adds Android Automotive support to the UAMP sample by creating an automotive module, setting the manifest feature flag, and extending the MediaBrowserService… | ||
| Going edge-to-edge with Gesture Navigation | Chris Banes, Rohan Shah | 37m |
Android Q makes apps draw behind system bars and adds gesture nav plus new inset APIs: use WindowInsetsCompat and onApplyWindowInsets to add padding, set flags… | ||
| Wake Up, Neo | Vladimir Ivanov | 17m |
Industry metrics show >1 billion user records exposed and frequent breaches caused by open Elasticsearch instances and careless APIs; a banking app leaks… | ||
| Jetpack Compose — Next Gen Kotlin UI Toolkit for Android | Ragunath Jawahar | 32m |
Jetpack Compose presents a Kotlin-first UI toolkit that builds UI as functions of state using a runtime plus a compiler plugin; the demo builds a working fruit… | ||
| Taking your users’ money: In-app billing from start to best practices | Kai Koenig | 44m |
Covers Google Play Billing Library (v2/v3) and the Play Developer REST API, warns that the library requires you to supply SKU lists because there is no API to… | ||
| Fate is Bull$h!t: Get Happy, Get Known, Get Paid | Stacy L Devino | 41m |
Argues that fate is bull$h!t and that career progress follows three steps: get happy, get known, get paid. Claims concrete wins — no coding exams for last… | ||
| Designing for Sustainable GROWTH/Digital Well Being | Purnima Kochikar | 26m |
Google Play is running dozens of experiments and publishing case studies via the Academy of App Success and Medium while pushing Android Q permission… | ||
| Building kiosk app: tips and tricks | Kirill Bubochkin | 29m |
Describes a two-app architecture: a standalone kiosk UI plus a device policy controller that provisions devices, grants permissions and controls updates. Uses… | ||
| Dagger Reflect - The circle from runtime to compile time and back to runtime | Nelson Osacky | 29m |
Dagger Reflect replaces Dagger’s heavy generated code with a reflection runtime that cuts annotation‑processing time and speeds local builds: measured average… | ||
| Move over certificate pinning. Certificate transparency is here! | Matthew Dolan | 08m |
Certificate Transparency is already replacing pinning in Chrome and actually prevents silent misissuance by publicly logging certificates in append only Merkle… | ||
| Leading edge: Sync solutions for connecting offline-apps | Vivien Dollinger, Markus Junginger | 18m |
Claims that enterprise cloud traffic falls from 90% to 25% drive a push to run and store more work on devices for privacy, latency, cost and offline… | ||
| A LUT (lot) of image filters on Android | Garima Jain | 33m |
Implementation uses RenderScript on Android to apply 3D LUTs for image filters, converting designer LUTs (HALD/horizontal strip) into a RenderScript… | ||
| How to Build Android Apps for Cars | Carsten Isert | 14m |
Android Auto runs from the phone and already reaches 50+ million cars in 36 markets while Android Automotive OS runs in-vehicle so no phone is required and… | ||
| A Real use case of practical AR-AI couple - Size my luggage | Giovanni Laquidara | 37m |
Android native app overlays a fixed-dimension 3D luggage model onto camera view and lets users drag and rotate it to check airline allowance; it uses ARCore… | ||
| From Four Wheels to Two | RJ Marsan | 33m |
Lyft adds a scooter‑share to the existing app in two months by shipping a self‑contained implementation behind feature modules and feature flags, using… | ||
| Driving inclusive design at your company | Ataul Munim | 19m |
At Monzo a small group pushes inclusive design across ~15–20 Android engineers split into ~10–20 teams by using an accessibility Slack channel for escalations… | ||
| Migrating to Paging Library | Florina Muntenescu | 34m |
Step‑by‑step migration from RecyclerView.Adapter to Android Paging Library with Room and LiveData, replacing LiveData<List> with LiveData<PageList> and… | ||
| Supporting Each Other: Growth for Juniors and Seniors | Lara Martin | 34m |
Argues that hiring juniors is practical and valuable, not just idealistic: juniors bring fresh motivation and flexible mindset, can learn quickly when given… | ||
| Setting up a bug bounty program for your app | Sebastian Porst | 35m |
Overview of a practical bug bounty: Google Play’s program runs on HackerOne, covers 40 partner apps and pays roughly $1k–$3k per bug, with almost $200k… | ||
| Dekompiling | Márton Braun | 39m |
Walks through a concrete Kotlin example and the IDE tools used to inspect what actually runs: use Show Kotlin bytecode and the decompiler to see top‑level… | ||
| Overview of common Android app vulnerabilities | Sebastian Porst | 41m |
Google Play’s bug program triages hundreds of reports into 19 classes across six categories and pays bounties (about $200,000 over 18 months, $500–$5,000 per… | ||
| Navigation and the Single Activity: Learnings from a Skeptic | Ash Davies | 36m |
Practical account of adopting Android Jetpack navigation: the navigation component plus the SafeArgs plugin implements type‑safe arguments, generates deep… | ||
| A Journey in Shared Code with Kotlin Multiplatform | Ankush Gupta | 42m |
Quizlet ports its grading “secret sauce” from JS into Kotlin Multiplatform, runs artifacts on JVM, JS, and native, and ships shared libraries to Android, iOS… | ||
| nothing matches | ||