There were fantastic announcements in the Android track, most impressive the switch from Eclipse to IntelliJ. Easier APIs for location - including using sensors like accelerometer, gyroscope for interior mapping - improve how developers can consume location updates from the phone.
The biggest eye-opener in the Android track were some fantastic talks about UI with fresh ideas to design for tablet with tips and tricks to utilize those bigger screens nicely. Another talk about Google Play Services API was incredible, as Google has a way to update APIs, regardless of OS version, s without having to wait for manufacturers. An example of this is the new location API, which is available as low as Android 2.0. I assume this is the same way that the GCM clients are updated on devices.
There were excellent talks about monetization and discovery. The short version is that free-to-use models seem to work best. Unlocking features with in-app purchases will create user retention (assuming your app is good). This is counter intuitive to me, being used to more traditional payment models from iOS, where an app costs X and remains free for its lifetime. Android users are apprehensive to spend cash without seeing the app first - odd considering they have a trial period on purchases and subscriptions.
An interesting library provided by Google is Volley. A networking library that provides caching (LRU, I believe) for resources of a variety of types, including images. It also provides a custom view for networked images. NetworkImageView - why Google (and Apple for that matter) don't provide these as part of the framework is beyond me. The library also provides an easy way to deal with view recycling while AsyncTasks are running. Generally appears to make life easier for networking.
Accessibility in Android 4.2 has taken a giant leap. While it's not quite VoiceOver it's a fantastic step in the right direction. I hope to implement some of the new accessibility items on some of our apps. I don't fully agree with the drawing of gestures or the confusing TalkBack menu.
The animation session was a nice deep-dive into how animations are scheduled and what can be done to properly animate views. There's too much information in my notes I still have to go over to get a proper handle on things.
The Chrome track shed some light on the WebP format and how to better deal with high pixel density screens in efficient manners. I was disappointed nobody talked about the clown car method.
The PageSpeed Insight plugins were quite impressive, I hope I can give the nginx plugin a whirl soon. Currently our build processes do all this for us when we deploy. Having that automated by a company that specializes on optimizations like to seems an easy way to save development/configuration time.
A repeating theme for the (mobile) web was ensuring something reaches the screen within 1000ms. Even with modern cellular networks the issue is latency, not bandwidth. The key is reducing the number of redirects (and thus DNS lookups) and generally trying to reduce round trip times. Something should be on the screen within the first second to keep the user's attention. I hope to blog more about this in the future as we have an increasing interest in hybrid applications at Labs.
The AfterHours party was impressive in usual Google-style. Musical performances provided by (the) Billy Idol and Steve Aoki. Both of whom told us to get paid, and that Google is awesome!
ArcAttack was there playing a variety of tracks. Despite offering they could not tell us more about the physics behind the musical Tesla coils. Nerd highlight, of course, was Vader's March.
A gargantuan, hydraulic forearm and hand provided entertainment lifting full-size oil barrels 20-plus feet into the air, crushing them, and dropping them with a floor-shaking, satisfying thud.
Automotive robots mixing drinks were a highlight. You could walk up, make an order of a variety of cocktails, and wait for the robots to create them. One robot would fill glasses with alcohol and mix, while two waited patiently for the beverage, mixed them gracefully and poured them back into a glass for final delivery by conveyor belt. The mixing had this near human-like agility to it that made the robots look quite odd indeed.
As always the catering of meals was delicious, and filling. Thanks Google, thanks to the Moscone staff, great event! I can't wait to be back in San Francisco.