Presenting the Winners of the Android Developer Challenge I

Since we started the first Android Developer Challenge late last year, we all have been eager to see who the winners of $275,000 and $100,000 would be. All 50 applications that emerged from Round 1 of ADC I showed great promise, and these teams have been working intensely for the past several months to polish their apps for the final round.

Similar to round 1 we sent laptops preconfigured with the judging environment, emulator, and all entries to each of our seven judges. In this round, each judge reviewed all 50 applications, took collaborative notes and gave initial scores. Then, all judges met together over conference calls to discuss and debate these applications, finally coming to consensus on which applications should receive $275,000 and which should receive $100,000.

We're pleased to present all of the winners and finalists in our detailed ADC gallery. Peruse and enjoy — there are awesome applications and unique uses of the Android platform. We would like to congratulate the winners and thank all the entrants for their hard work!

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Android Market: a user-driven content distribution system

When we talk to developers, a common topic is the challenge of getting applications in the hands of users. That's why today I'm happy to share early details of Android Market—an open content distribution system that will help end users find, purchase, download and install various types of content on their Android-powered devices. The concept is simple: leverage Google's expertise in infrastructure, search and relevance to connect users with content created by developers like you.

Developers will be able to make their content available on an open service hosted by Google that features a feedback and rating system similar to YouTube. We chose the term "market" rather than "store" because we feel that developers should have an open and unobstructed environment to make their content available. Similar to YouTube, content can debut in the marketplace after only three simple steps: register as a merchant, upload and describe your content and publish it. We also intend to provide developers with a useful dashboard and analytics to help drive their business and ultimately improve their offerings.

I also wanted to share some early details to help with planning your efforts so that you can be ready as our partners release the first Android-powered handsets. Developers can expect the first handsets to be enabled with a beta version of Android Market. Some decisions are still being made, but at a minimum you can expect support for free (unpaid) applications. Soon after launch an update will be provided that supports download of paid content and more features such as versioning, multiple device profile support, analytics, etc. Below are some screenshots that illustrate some of the security features and workflow.

With the addition of a marketplace, the Android ecosystem is becoming even more robust. I am incredibly energized by the support and amazing content I've seen so far. We will share more details as they are available and I look forward to working with many of you in the coming months.

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Announcing a beta release of the Android SDK

I'm pretty happy today, for two reasons. First, I'm happy because I get to let everyone know that we're releasing a beta SDK. You can read about the new Android 0.9 SDK beta at the Android Developers' Site, or if you want to get straight to the bits, you can visit the download page. Once you've got it, be sure to visit our Developer Forum if you have any questions.

Back in November, we made some SDK builds available that we referred to as "early look" SDKs. The goal was to give developers insight into the platform as early on as possible, and to get some initial feedback. Since then, we've been working with our Open Handset Alliance partners to incorporate much of that feedback, and finish the first devices. Since those devices are shipping in the fourth quarter, the platform is now converging on a final "Android 1.0" version.

The beta SDK that we're releasing today is the first big step on the SDK's road to compatibility with 1.0. Since this is a beta release, applications developed with it may not quite be compatible with devices running the final Android 1.0. However, the APIs are now pretty stable and we don't expect any major changes. If you're one of the many developers who were waiting for something a bit more mature, this might be a good time to take another look.

Since we're now moving quickly toward 1.0, it may also help to know which direction we're headed. To help out, we've also prepared a development roadmap. This will be a living document, and we'll keep it up to date as the Android landscape evolves. Currently it covers the next few months, roughly through the end of the year and a bit into next year. We'll update it with additional detail as we are able to, but even right now it can help give you a picture of how things will play out as the first phones draw near.

Enough of that though -- you're probably wondering what's actually new in the SDK. Well, you should read the Release Notes, the Change Overview and the API Delta Report for all the details, but here are a few highlights:

• First and most obviously, the new Home screen is included, along with a ton of UI changes for 1.0.
• Some new applications are included: an Alarm Clock, Calculator, Camera, Music player, Picture viewer, and Messaging (for SMS/MMS conversations.)
• Several new development tools were added, such as a graphical preview for XML layouts for users of Eclipse, and a tool for constructing 9-patch images.
• Since we've got a new Home screen application now, we thought the now-obsolete version from the M5 early-look SDK might be helpful to developers, so its source is included as a sample.
• A number of new APIs are fleshed out and improved, and others are now close to their final forms for 1.0.
• Tons of bugs were fixed, of course. (If you had problems with the MediaPlayer, try it now!)

There are a lot of changes -- the ones in the list above are just my personal favorites, so you should check out the links above for the full story. Not all the changes are additions, though: I'm sorry to say that we had to remove a few things, such as the GTalkService (for security reasons), and the Bluetooth API. There's a bit more detail in the links above, and we'll follow up on those in particular here in this blog to give you the scoop. In fact, we've got a little list of topics we want to talk about here, so stay tuned.

At the top of this post I said I was happy for two reasons, and now you know one of them -- but what about the other? Well, the second reason is because now that this is out I can finally go get some sleep!

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