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Architecting a Low-Power GPS Geofencing Engine for Android Background Services

The atmosphere in the room was dense, the kind where every whisper echoes. I was sitting in the third row of a local community center during a Frida…

The Freedom of Pet Projects

In June, I learned how to change diapers and convinced myself that 5 hours of sleep is a luxury. Somewhere in between, I also shipped iOS for Kombin…

Как я написал круговой лаунчер на Jetpack Compose: тригонометрия свайпов и системные грабли

Большинство лаунчеров для Android повторяют одну и ту же концепцию сетки иконок. Чтобы открыть приложение, нужно листать бесконечные рабочие столы и…

Дизайн-система в Додо: почему модуль компонентов – это еще не система

28 стилей одной кнопки на старте – и как мы дошли до дизайн-системы, которая живет без нас: с паспортами компонентов, распределенной разработкой и г…

Рецензия на книгу «Асинхронный Kotlin»

Книга «Асинхронный Kotlin» Яны Седовой посвящена теме, которая часто вызывает проблемы у начинающих Android-разработчиков, — корутинам и Flow. Книга…

Building a Geofencing Engine: Why I Avoided Persistent Background Location

It happened during a Friday prayer service. The room was silent, the imam was mid-sermon, and suddenly, my pocket erupted with a loud, upbeat ringto…

the beauty in dsl-able languages

I inspected my KMP iOS export header 61% of it was dead weight. Here’s what I found and built

If you are building an iOS app with Kotlin Multiplatform (KMP) or Compose Multiplatform, you might have opened your generated Shared.h header at som…

OpenIDE Pro в деле: Java, Spring, базы данных и AI-агенты в одной IDE

За последние несколько лет часть привычных инструментов разработки стала для российских компаний ограничена или недоступна: возникли сложности с зак…

Android SDK for Robot Battery, Power, and Charging Management

Android SDK for Robot Battery, Power, and Charging Management In autonomous mobile robotics (AMR) and industrial automation, power lifecycle managem…

Jabbit — фоновые задачи в KMP с API как у WorkManager (почти)

Привет! Представьте, что вы с удовольствием пишите один код на все платформы на Kotlin Multiplatform, и вдруг приходит задача «синкать данные раз в…

Why scrolling screenshots fall apart on video feeds

I maintain a small Android app that stitches a scrolling screen into one long image. It worked well until people started pointing it at social feeds…

Android CameraX: детекция лица в реалтайме для биометрии

Привет, Хабр! Я Евгений Шувагин, последний год работаю над компонентом Face-Shot в Т-Банке. Представим ситуацию: клиент хочет перевести большую сумм…

Шпаргалка: Kotlin Coroutines Channels и Actor-модель

Пытаюсь лучше понять работу Kotlin Coroutines. Беру небольшую тему про Kotlin Coroutines и пытаюсь разобраться и написать шпаргалку (максимально кра…

Architecting a background-service-based sound manager that survives Android's Doze mode

It was the final ten minutes of a high-stakes client presentation. I was mid-sentence, explaining a complex system migration, when my phone erupted…

Android Storage in 2026: Scoped Storage, SAF, and Why Filesystem Abstractions Still Matter

Android storage has changed dramatically. For a long time, Android developers could think about storage in familiar terms: val file = File ( "/some/…

How To Report A Bug So It Actually Gets Fixed

Architecting Location-Aware Automation Without Killing the Battery

It happened during a quiet, solemn moment at a funeral. I felt the vibration in my pocket, and for a split second, I panicked. I had silenced my pho…

My performance optimization silently disabled the feature the app exists for

This is a submission for DEV's Summer Bug Smash : Smash Stories. TL;DR. I bounded a database read to make my analyzer faster. I derived the bound ca…

I installed a crash reporter and it crashed my app 100% of the time

This is a submission for DEV's Summer Bug Smash : Smash Stories. TL;DR. I wired Sentry into my Android app behind a careful guard so that a build wi…

Eleven tables, zero indices, and the observability I added afterwards found three more bugs

This is a submission for DEV's Summer Bug Smash : Clear the Lineup. TL;DR. My app recomputes every coaching verdict from raw training logs on read.…

I Built an AI That Auto-Replies to Your Instagram DMs (No Login Required)

I Built an AI That Auto-Replies to Your Instagram DMs (No Login Required) Managing Instagram DMs is a full-time job. Whether you are a small busines…

Architecting low-power location triggers for Android automation

It happened during a quiet Friday sermon. My phone, tucked deep in my pocket, decided that was the perfect moment to blast a loud notification tone.…

Mongodb Partitioning

At Whoz , we build a SaaS platform that helps professional services companies manage their talent staffing. At the heart of our product lies a conce…

SimpleDownloader - an Android downloader manager library designed to simplify complex file downloading behind a simple API

SimpleDownloader got new features, API, and improved the stability. SimpleDownloader on GitHub: https://github.com/jeetarc/SimpleDownloader Added on…

Architecting a Low-Power Geofencing Engine: Lessons from Battery Optimization on Android

Opening hook The silence in the room was absolute, save for the rhythmic scratching of pens against paper during a final exam. I was three rows back…

Object Detection on Android for Autonomous Robots

Object Detection on Android for Autonomous Robots Introduction Autonomous robots need to recognize objects in their environment. Object detection ca…

Building a Voice-Controlled Robot with Kotlin and LLMs

Building a Voice-Controlled Robot with Kotlin and LLMs Introduction Natural-language interfaces can make robots easier to operate. Instead of select…

Android + NVIDIA Jetson + ROS 2: Building an AI Robot

Android + NVIDIA Jetson + ROS 2: Building an AI Robot Introduction A practical Physical AI system often separates the user interface, AI compute, ro…

Android Computer Vision for Robot Navigation

Android Computer Vision for Robot Navigation Introduction Navigation requires a robot to understand its surroundings. Cameras can provide useful vis…