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Android Dev Summit 2019 – my recap

Android Dev Summit 2019 – my recap

I was attending Android Dev Summit 2019 in Sunnyvale and I’d like to share my thoughts after the event. It’s my small recap of my experience. But let’s start from the beginning.

Android Dev Summit and Google I/O. Why do we need two Android events from Google?

You can’t compare these two events. They are completely different. I’m starting from this because I know that in #androiddev community it’s not obvious why do we have Android Dev Summit and why it’s not a part of Google I/O.

I’ve also been to Google I/O so I can tell the difference from my own experience.

Google I/O is probably the developer conference (especially if you are into Google’s technologies) but it’s more like a festival. I can’t compare this event to any other event I’ve been to but if you are a developer and you are focused around Google’s technologies – it’s like being at the best music festival with your favorite lineup.

If you are Android developer – Google I/O is important, but it’s focused on announcements. Of course you’ve got access to Googlers (networking is another best thing I can think of) but it’s not focused only on Android and it’s future.

Android Dev Summit is a conference focused only on Android, its framework and future. It’s organised by people directly involved in the Android development. You’ve got access to Googlers directly working on Android and all its parts (Jetpack, Play Store, Android Studio, Android for Cars…). It’s 2-day event and the goal here is to invite Android developers and give them deep technical talks about platform and coming changes to the platform. Also it’s the right moment to get feedback from them. This is important, I was surprised how all teams are open here and waiting for your feedback (greetings to Ian Lake)

For almost two days you’ve got access (Office hours) to all Android teams waiting for your questions.

If you are not attending the event in person – don’t worry – keynote is live streamed on YouTube and all other talks are shared on YouTube few days after the event. It’s one week since the event and you can already watch them here (all Android Dev Summit 2019 sessions)


Just like at Google I/O – it’s a good place to meet (new) people know only from the internet. A lot of GDEs (Google Developer Experts) and people working in companies located in Sillicon Valley area.

Breaks between talks were also really awesome – it was a perfect moment to share and exchange your thoughts with others about the topic.

Let’s get back to the main topic – Android

My favorite points from Android Dev Summit 2019

This part is especially for Android developers. I’ll skip keynote here but I think you should start watching talks from ADS from keynote to have a better overview.

If you are Android Developer, make sure to watch this:

  • Jetpack Compose
    I think everyone is following this topic and if you are Android developer you should know it’s the future. It’s good to know about upcoming changes here
  • Preparing for Scoped Storage
    This is a really big change in Android. I’m not sure why it is ignored by many Android developers. Make sure to watch this video and think how you should change your app to be ready for this.
    In my opinion it’s one of the biggest changes coming to Android. I don’t feel comfortable here with new APIs and I hope Google will give us more examples how we should use it and which API (this is my main concern).
  • LiveData with Coroutines and Flow
    I feel Flow will be trending topic on Android’s dev conferences.
  • Motion Layout
    Make sure to watch to this session (“What’s New in Android Studio Design Tools”). I think this is huge!
  • Understanding Compose
    Interesting, deep technical talk I didn’t understand when I was there. I needed to watch it again and probably I’ll do it again.
    I think it can be a game changer and we’ll see more talks about it on Android conferences.
  • Developing Themes with Style
    Crash course in themes and styles. And if you know it’s made by Nick Butcher and Chris Banes – you know it’s gonna be good. And it was it. One of my favorites.
  • What’s new in Android Studio 4.x
    I think it’s important to watch this session. Probably you are not using canary versions in Production but make sure you watch this to see what new tools you’ll get it.
  • An Opinionated Guide to Dependency Injection on Android
    OK, maybe it wasn’t real deep technical talk but you’ll learn here what’s the future of DI in Android and why you should still stick with Dagger. This is a good thing. I was waiting for this.
    TL;DR: Google knows wasn’t the best thing they made for Android and in future they’ll try to give us better solution here. No details. I think we need to wait a while for more detailed info.
    PS. There is new codelab from Google for Dagger
  • Fragments: Past, Present, and Future
    More changes coming to Fragments. Be sure to watch it.

I was also pleasantly surprised with these talks:

If you are into Android development make sure to watch sessions from this event. Simply start from the keynote.

Report bug, use official issue tracker

This is something I also learned there. Google is listening to your feedback and there’s no better way of reporting it than official issue tracker.

If you think they are not reading it – you are wrong! It’s reporting issues on Twitter that is not working 😉

Android Auto / Android for Cars

I was looking forward to see some news regarding Android Auto / Android for Cars. Unfortunately, no news here. There was no Android Auto team present. There was only Android for Cars team presenting latest version of Android for Cars in Volvo XC40. But still the platform is closed for third party apps (other than multimedia and instant messaging).

You can see short presentation here: How to Build Media Apps for Cars (Android Dev Summit ’19)

I hope this situation will change in near future. For us, it’s the only one closed mobile platform for our navigation (Apple opened this gate before Google).


Some photos from the event

Android Series #1: App quality, Vitals

Android Series #1: App quality, Vitals

I’m starting Android Series on my blog (yay!). Today I’d like to focus on a news that was announced by Google 2 weeks ago and I feel that this post from official Andoid Developers Blog didn’t get much attention. I talked with many Android developers on many events and I know how approach for maintaining code can vary. In most cases on conferences we are focusing on technology, technical stuff and we forgot about quality. Don’t get me wrong, I know that Google is trying to change this situation. I’ve been to Google I/O 2018 and I was talking with Googlers about it but I saw also that many developers are more exited about technical news from Android’s world and they didn’t get much attention to this topic. It is worth to mention that new technical stuff we got from Google like Android Jetpack, Architecture Components – they are also here to help us to improve the quality – better architecture – more solid app, less crashes, better performance (so this is connected). What’s “the quality” in Android’s world?
Posted by Paul Bankhead, Director, Product Management, Google Play … Over the last year, we’ve been enhancing our search and discovery algorithms’ consideration of app quality and user engagement. This means that apps and games that have high retention rates, low crash rates, low uninstalls, and many other factors, are recommended more often. Recently, we increased the importance of engagement and app quality in our recommendation systems and users reacted favorably to the changes. With more high quality titles being surfaced in the Play Store’s recommendations, people are playing the games they download more often.
Paul Bankhead briefly listed factors that affect the quality of Android applications. We heard in the past that stability and performance is a factor when you are thinking about ASO (App Store Optimization). Now it is more clear what does it mean and we know that Google is already using this factor to filter search results at Play Store (search results, recommendations…). You want more downloads for your app? Make your app stable and don’t forget about performance.

Android Vitals to the rescue!

You’ll find Android Vitals in Google Play Console.
Android vitals is an initiative by Google to improve the stability and performance of Android devices. When an opted-in user runs your app, their Android device logs various metrics, including data about app stability, app startup time, battery usage, render time, and permission denials. The Google Play Console aggregates this data and displays it in the Android vitals dashboard.
Do you care about high retention or low uninstall rate as a developer? Probably you are focusing on crashes, ANRs mainly. It’s not enough right now. You could miss some important factors you’ll find in Android Vitals. It’s easier to understand this when you are working on your app for many years. You’ll see then also that in many cases fixing/improving Android Vitals can be a long term process. You could say that’s it’s not your problem as a developer – retention, number of downloads – it’s marketing or maybe product owner should care about this. Maybe, but right now you should be aware that with Android vitals as a factor in Play Store you are also responsible for this. All sides of a project should have this knowledge. Product manager was ignoring your suggestions about this? Tasks related with performance were moved to low priority queue? Right now maybe you should change your way of dealing with it. Especially when the app is your business. If you are a developer don’t focus only on problems mentioned for example in Crashlytics console. Be aware about Androd vitals. I hope that Google in future will move some information from vistals to Crashlytics console. I started writing more detailed article about Vitals but in my opinion Wojtek Kaliciński’s treatment of the subject is exhaustive. Wojtek posted two great articles about Android Vitals and you should read it:
  1. How to fix app quality issues with Android vitals
  2. How to fix app quality issues with Android vitals (Part 2)
I strongly suggest you also to to see the session about it from Google I/O ’18 See you next time!