MAManuel Alejandro Hermosoindeeptelar.hashnode.dev·2d ago · 9 min readAn AI agent that asks before it pays: human approval for tool calls in Kotlin An agent that only talks is easy to trust. An agent with a refund tool is not. The model decides when to call it and with which amount, and the same question can get a different answer tomorrow. I don00
EDEpic Devsinepicdevlog.hashnode.dev·4d ago · 3 min readWhy Stripe Test Mode Lies: A Solo Dev's 36-Hour Payment Infrastructure Trench WarfareWhy Stripe Test Mode Lies: A Solo Dev's 36-Hour Payment Infrastructure Trench Warfare Hey everyone 👋 I'm Usama. By day, I work as a Project Manager. By night, I'm a solo dev building a Kotlin Multipl13R
SSiteyinsiteypk.hashnode.dev·4d ago · 4 min readUrdu on Android: phone numbers that swap halves, and other RTL bugsSitey is an Android app for people in Pakistan. It makes visiting cards, invoices, menus, result cards and shadi cards, in Urdu and English, with Urdu set in Nastaliq. Most of our Urdu bugs had nothin00
KTkodnex Technologyinkodnextech.hashnode.dev·Oct 8 · 8 min readHow to Set a Wallpaper Programmatically in Android with Kotlin (Retrofit + WallpaperManager)Fetch 4K portrait wallpapers from a REST API and apply them to the home or lock screen. This covers the memory-safe approach, the right flags, and a daily auto-changer with WorkManager. Disclosure: I00
TDTSI DEV Studiointsidevstudio.hashnode.dev·Sep 28 · 6 min readWhat Building a Local-First Private Vault Taught Me About Android PrivacyPrivacy is not one feature. It is a chain of decisions about storage, previews, locking, deletion, and user control When I started working on Xsilent, the idea sounded straightforward: build an Androi10
SDSynfinity Dynamics Pvt Ltdinsynfinitydynamics.hashnode.dev·Sep 22 · 5 min readWhat Is Kotlin, and Why Does It Still Matter in 2026?Kotlin is a modern, statically typed programming language developed by JetBrains that runs on the Java Virtual Machine (JVM). Since 2019, it has been Google's preferred language for Android developmen10
ANAPITube News APIinapitube.hashnode.dev·Sep 21 · 21 min readAn Android news app in Kotlin, from empty project to APKOne page of 20 headlines weighs 608 KB when we take a news API's default response and 18 KB when we ask for only the eight fields a list row renders. That single query parameter, fl=, decides whether 00
GYGulshan Yadavinmrgulshanyadav.hashnode.dev·Sep 17 · 12 min readBuilding an AR Feature in Android: From Zero to WorkingThe full pipeline for a tap-to-place augmented reality feature on Android — ARCore session, SceneView rendering on Filament, plane detection, object placement, and the production pitfalls I hit in the00
TMTrishit Majumdarintrishit.hashnode.dev·Sep 16 · 15 min readWhy Kotlin Won Me Over After JavaI still remember the exact feeling of sitting down to write my first "real" program and having absolutely no idea which language deserved my time. There's a particular kind of paralysis that hits when00
DCDionisio Cortés Fernándezinblog.dionisioc.dev·Sep 14 · 27 min readSOLID Without the Acronym: It's Just Cohesion and CouplingSOLID isn't really five independent principles. It's mostly two long-standing design ideas, wearing five names. High cohesion — keep the things that change together, together. Low coupling — depend 00
