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Android Worldwide: July 2021

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An international collective of developer communities who like to put on quarterly events for Android Devs and related engineering specialties. Sid Patil and Gabor Varadi at Android worldwide July 2021

Event Details

Our third event at Android worldwide took place on 27th July 2021 over two days (or one day depending on your timezone). It was absolute fun, with two previous events and over 20 talks already we saw ever increasing support from the community. This quarter we had interesting topics, mainly due to new API releases and eager Android devs ready to try them.

Our speakers for July 2021

  • Gabor Varadi
  • Ana Zharkova
  • Ash Davis
  • Sagar Viradiya
  • Subhrajyoti Sen
  • Moataz Nabil
  • David Rawson
  • Mohit Sarveiya
  • Madona Syombua
  • Ed George

We also recently updated our website, do visit Android Worldwide

Gabor Varadi talks about Simple stack hosted by sid patil at android worldwide july 2021

Over 30 communities are a part of the Android Worldwide group and we had over 750 developers register for the event!


Participating communities

Android Budapest Android Developer Group Poznan Android Serbia
AndroidHeads Vienna DC Android Denver Droids
GDG Android Columbus GDG Boston Android GDG Bronx
GDG Capital Region GDG Córdoba Argentina GDG Fresno
GDG Helwan GDG Kolachi GDG Los Angeles
GDG Los Angeles Android GDG Montreal GDG Mumbai
GDG Nagpur GDG New York City GDG Osijek
GDG Phoenix GDG Tbilisi GDG Toronto Android
GDG Washington Kotlin Mumbai New York Android Developers
Kotlin Hyderabad


Dealing With KSP in Common Code for Android and iOS with Anna Zharkova

KSP (Kotlin Symbol Processor) is an API from Google for writing Kotlin compiler plugins. Using KSP we can write annotation processors to reduce boilerplate and solve cross-cutting concerns. Also KSP is more effective than KAPT. Among the advantages of using it is the support of Kotlin Multiplatform. In my talk I would like to present several cases (such as Dependency Injection, e.g) of using KSP in Kotlin Multiplatform for both Android and iOS.


Uncoiling the COIL - Modern Image Loading on Android with Sagar Viradiya

Image loading is hard but luckily this problem has already been addressed on Android. There are many libraries out there that handle image loading seamlessly. COIL is the new kid to the club and you may be wondering why do we need another image loading library?


Understanding WindowInsets with Subhrajyoti Sen

Most of us would have heard of WindowInsets lately but never really understood what they are or why we need them. Have you had to write complex code just to get the height of the keyboard or use a combination of flags (that were confusing) to get a desired status bar appearance. The WindowInsets APIs provide convenient ways to handle these scenarios.


Everything is an API with Ash Davies

Just because we might not be exposing a module as a public or open-sourced library, doesn’t mean we can’t benefit from making good decisions towards an effective and sensible API. By taking the stance that every piece of code we write is an API we can build more versatile and scalable applications.


Simplified Single-Activity Apps Using Simple-Stack with Gabor Varadi

Single-Activity apps have been the officially recommended way to structure Android applications since 2018. However, whether they’re simpler to write and maintain compared to multi-Activity apps (or even “Activity per screen” approaches) is still sometimes up for debate.

This talk focuses on the single-activity-focused navigation framework Simple-Stack, which has been in development since 2017.


The Road to Mobile DevOps for Android with Moataz Nabil

Mobile DevOps is a practice of bringing the different disciplines involved in developing, testing, releasing, and operating software into being functional inside organizations or by a team that works closely together. The team is able to continuously deliver their apps based on continuous feedback and iteration. Different practices, habits, and flavors of adopted company cultures set the behavior for an actual process and daily doing.


Sorting and Reporting Your Dependencies with Gradle with Ed George

All apps have dependencies, but what is the best way to manage and keep on top of them? This session takes a look at some simple steps, tools, and tricks to use Gradle to help us make dependency management far easier.

Starting with simple Gradle language features, we will also explore how to handle dependencies within more complex projects, dive into some useful Gradle plugins, and finally look into what the future of dependency management within Android may be.


The New Jetpack Register for Activity Result API with Madona Syombua

Android docs now recommend using this new registerForActivityResult API in favor of the old one, onActivityResult, we can dive deep into how this new API has made part of development seamless. Also, one can define a custom contract so that the consuming app can get results as a sealed class rather than as an intent.


Arrow of Outrageous Error Handling with David Rawson

Arrow is a functional programming library for Kotlin that has been featured in the ThoughtWorks Tech Radar. This talk will explore some error handling techniques from functional programming that will make your Android apps more robust. We will cover Either and Validated from the Arrow library with examples in a real Android codebase.


Kotlin State & Shared Flows in Action with Mohit Sarveiya

State Flows and Shared Flows were introduced to broadcast events to multiple consumers with coroutines. We’ll dive deep into the Shared & State Flow APIs. A Shared Flow provides you with the ability to replay and cache events. How do you handle back pressure? We’ll look into simple-to-use cases for using Shared Flows.


à la prochaine fois

See you all next time folks! Mostly around November in our next Android worldwide session.

About the author

Siddhesh Patil is an Android Engineer at DeliveryHero. Building core ordering experiences at Foodpanda and Foodora. He is the organzier of Kotlin Mumbai, a developer community in Mumbai, India. Find talks, articles and latest developments in Android and Kotlin on this website siddroid.com

Sid Patil is an Android Engineer and Kotlin Advocate based in Berlin, Germany. He works at Delivery Hero, building ordering experiences of food delivery and Q-commerce brands like Foodpanda and Foodora.

This publication was last updated on November 23, 2021

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