Google ships and maintains hundreds of mobile apps. Most are held to high standards of quality and performance and, in the name of such, are built twice by separate teams and from separate codebases for iOS and Android.

This talk will discuss a new mobile UI toolkit, Flutter, which was was built for quickly developing best-in-class, beautiful applications for both iOS and Android.

In particular, this talk will highlight the architectural choices made when designing Flutter to enable the creation of high quality apps without relying on "native" UI toolkits. Examples include using an modern/emerging language (Dart), choosing to build a novel functional-reactive framework, as well as favoring composition over inheritance in said framework. We will also discuss how these choices combine to achieve developer benefits, such as a sub-second code-change-to-live-on-phone-without-losing-state dev cycle, as well as user benefits, such as easy simultaneous feature releases and highly custom, delightful app experiences.…

Google Tech Talk, May 5th, 2016, presented by Adam Barth
ABSTRACT: Archimedes once said "give me a deep enough pipeline, and I shall move the world." Well, that's what he should have said in any case. This talk will describe the nuts and bolts of how Flutter transforms a tree of widgets into pixels on the screen at 60 Hz by pushing data through its pipeline of layout, painting, compositing, and finally rasterization.

To learn more about Flutter and how it helps developers build mobile apps, please visit https://flutter.io

See Ian Hickson's Google TechTalk on Flutter's Layered Design at https://www.youtube.com/watch?v=dkyY9WCGMi0

I'm trying to release an app to the Google Play store. I've gone through all the required steps in the Google Play Console (play.google.com/apps/publish)

But when I click App Releases on the left,...