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Share code between Android and Jvm in Kotlin multiplatform
While Android supports most Java language features, it doesn’t support every API that Java provides. On the other hand, Kotlin multiplatform only allows sharing code across all targets (commonMain), not a subset of targets (commonJvm).
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Articles
In Android 12 we’re making the OS smarter, easier to use, and better performing, with privacy and security at the core. We’re also working to give you new tools for building great experiences for users, whether they’re using phones, laptops, tablets, TVs, or cars. 

In this article, we’ll see how to auto-clear memory references with Kotlin’s delegated properties to avoid memory leaks in your Android app.

Kotlin for Cross-Platform Mobile Development
I’ve worked on teams that use many repositories and teams that put everything into a giant monorepo. But no matter how much code we jam into git, there’s always something else on the outside. Gradle’s includeBuild() feature smashes multiple projects together into one. Recently I used it…
Learn how to implement biometric authentication in your Android app by using the Android Biometric API to create an app that securely stores messages.
Libraries and useful resources
A decentralized domain-based App Store for Android.
Videos/Podcasts
This video is part one of two-video series, in which I'll show you how to create a very simple Android Studio plugin that interacts with connected devices and toggles one of the developer options  -  Show layout bounds.
Class of the week
Provides access to the centralized AppSearch index maintained by the system.
Beyond Android
SMS text messages were already the weakest link securing just about anything online, mainly because there are tens of thousands of employees at mobile stores who can be tricked or bribed into swapping control over a mobile phone number to someone else.