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Posted by Dan Galpin, Developer Advocate

This blog post is part of a weekly series for #11WeeksOfAndroid. For each of the #11WeeksOfAndroid, we’re diving into key areas so you don’t miss anything. This week, we spotlighted games, media, and 5G; here’s a look at what you should know.

What's the buzz in Android 11?

You can now control media applications from a dedicated space within the notification area while enabling features such as playback resumption and seamless transfer.
New and updated 5g APIs help you unlock transformative new user experiences.
Adds new support for key game tools and technologies. On top of that foundation, we're building tools to both improve your game developer experience and help you better characterize the performance of your game, services to help you expand the reach of your game to more devices and new audiences, and new and improved features to support your games' go-to-market with Google Play.

Android 11 media

We covered how to take advantage of Android 11's new media controls by making sure your app is using MediaStyle with a valid MediaSession token. We showed how to support Media resumption by making your app discoverable with a MediaBrowserServiceCompat, using the EXTRA_RECENT hint to help with resuming content, and handling the onPlay and onGetRoot callbacks. Finally we showed you how to leverage the MediaRouter jetpack library to support seamless media transfer between devices. Check out the updated version of the UAMP sample which contains a reference implementation for media controls and playback resumption.

Android 11 and 5G

We covered some of the primary ways apps can benefit from 5g, including:

Turning indoor use cases into outdoor use cases
Turning photo-centric UX into video-centric or AR-centric UX
Prefetch helpfully to make your app even more responsive
Turn niche use cases into mainstream use cases, such as allowing streaming content everywhere

Android 11 adds new APIs and updates existing APIs to ensure you have all the tools you need to leverage the capabilities of 5G, such as an enhanced bandwidth estimation API, 5G detection capabilities, and a new meteredness flag from cellular carriers. The Android emulator now enables you to develop and test these APIs without needing a 5G device or network connection. All of this and more is available from our dedicated 5G page.

Catch up on what's happening with game development

We presented a special "11 Weeks" episode of The Android Game Developer Show providing an update on the tools, services, and technologies we're bringing to help you build, optimize, and distribute great games.

Check out d.android.com/games to learn about everything we've covered this week and more, and stay up to date by signing up for the games quarterly newsletter.

Android game development tooling

In Android Studio 4.1, we enhanced the System Trace view of the CPU Profiler and added the Native Memory Profiler, and both can now be launched standalone from Android Studio. The System Trace and Native Memory blog posts have more details on how to use them with your game or app.

You can sign up for developer previews of the Android Game Development Extension, and the Android GPU Inspector. The Android Game Development Extension helps with building multi-platform C/C++ games, while the GPU Inspector is used to profile and debug graphics. Stay tuned for the open beta of the Android GPU Inspector.

Reaching more devices and users with your game

We took a deep dive into the Android Performance Tuner, explaining annotations, quality levels, and fidelity parameters along with some best practices on how to use them. Once you've implemented that, we also covered how to use the new insights and analysis you'll get within Android Vitals.

We showed how Google Play Asset Delivery brings the benefits of app bundles to games with large asset sizes, flexible delivery modes, auto-updates, compression, and delta patching. Texture compression format targeting is coming very soon letting you tap into modern texture compression such as ASTC (now supported on over 50% of devices) allowing you to considerably cut your game size and in-memory footprint.

We published new codelabs to help you integrate Android Performance Tuner and Google Play Asset Delivery into your Unity or native C/C++ game.

We explained how we can help protect your game, players, and business by fighting monetization and distribution abuse.

Boost your games' go-to-market

We launched the open beta of Play Games Services - Friends to help you bootstrap and enhance your in-game friend networks while having your games surfaced in new clusters in the Play Games app.

We demonstrated the new release management experience in the Google Play Console beta and showed how it can help your testing and publishing workflow.

Day one auto-installs is a new Google Play feature that allows users to request the automatic installation of your game during pre-registration. Early experiments show a +20% increase in day 1 installs when using this feature. The new pre-registration menu in the beta Google Play Console makes it easier than ever to access this feature.

We showed how to optimize your store listing page to take advantage of the greatly improved games visual experience within Google Play, showcasing rich game graphics and engaging videos.

The new in-app review API lets you choose when to prompt users to write reviews from within your game, without heading back to the app details page. This API supports both public and private reviews for when your app is in beta.

Learning path

If you’re looking for an easy way to pick up the highlights of this week, check out the Games, media, and 5G pathway. A pathway is an ordered tutorial that allows users to complete a pre-defined module that culminates in a quiz. It includes videos and blog posts. A virtual badge is awarded to each user who passes the quiz. Test your knowledge of key takeaways about Android game development, media, and 5G to earn a limited edition badge.

Key takeaways

Thank you for tuning in and learning about the latest in Android game, media, and 5G development.

Seamless media transfer and media resumption

MediaRouter API (UAMP Sample)

Bandwidth estimation API

5G Detection (Android Emulator)

Meteredness flag

Features found in Android Studio 4.1 (Beta Channel)

System Trace in Android Studio CPU Profiler

Android Studio Native Memory Profiler

Pre-release standalone tools

Android Game Development Extension

Android GPU Inspector.

Features in the Android Game SDK

Android Frame Pacing Library

Android Performance Tuner (C/C++ Codelab) (Unity Codelab)

Google Play features

Play Asset Delivery (C/C++ Codelab) (Unity Codelab)

In App Review API

App Licensing

SafetyNet Attestation

Pre-registration

Google Play Games Services

Play Games Services Friends Beta

You can find the entire playlist of #11WeeksOfAndroid video content here, and learn more about each week here. We’ll continue to spotlight new areas each week, so keep an eye out and follow us on Twitter and YouTube. Thanks so much for letting us be a part of this experience with you!

Posted by Greg Hartrell, Head of Product Management, Games on Android & Google Play

Welcome to our latest Android games update and the start of our #11WeeksOfAndroid week focused on games, media and 5G. With all of your interest and feedback in our developer previews, tools and services, we have lots to share in our ongoing efforts to help you better understand your game’s performance, expand your reach to more devices and new audiences, and support your go-to-market with Google Play.

Get the latest updates below and follow us at @AndroidDev for additional games resources and more.

Android tools for mobile game development

Android Studio 4.1: We've enhanced the CPU Profiler to expose more data with an improved UI, and we've added memory visualization, startup profiling capabilities, and sampling rate configuration to our Native Memory Profiler. Additionally, you can now open the Android Studio Profilers in a standalone UI. Checkout the System Trace and Native Memory blog posts for more details, and update Android Studio today for better profiling.
Android Game Development Extension: For developers building games on multiple platforms with C/C++, we continue to invest in our extension for Visual Studio, including adding support for Visual Studio 2019 and launching standalone Android Studio Profilers. Sign up for the developer preview to integrate with your Visual Studio workflow.
Android GPU Inspector: Look into the GPU of Android devices to better understand the bottlenecks and utilize the insights to optimize the graphical performance of your game experiences. Sign up for the developer preview and stay tuned for our upcoming open beta.

Reach more devices and users

Android Performance Tuner: Deliver higher quality game experiences to more Android users with less effort. Measure your frame rate performance and graphical fidelity and optimise between them to achieve stable frame rates at scale across the whole Android device ecosystem. Integrate the Unity plug-in or do a custom integration. Learn more in our new session.
Android Game SDK: Achievieving smoother frame rates and managing input latency on Android has become even easier! Now that the Game SDK is part of Jetpack, it’s simple to integrate our gaming libraries, such as the Frame Pacing API or the Android Performance Tuner, into your game. Grab the SDK or integrate it now through Jetpack.
Play Asset Delivery: Improve your user experience while reducing delivery costs and the size of your game with Play Asset Delivery’s flexible delivery modes, auto-updates and delta patching. Gameloft used PAD to improve user retention, resulting in 10% more new players than with their previous asset delivery system. App bundle format will be required for all new apps starting August 2021. As part of this, we will deprecate legacy APK expansion files (OBBs), making Play Asset Delivery the standard option for publishing games over 150MB.
Protect game integrity and fairness with Google Play tools: Protect your game, players, and business by reducing costs fighting monetization and distribution abuse. Some partners have seen up to a 40% decrease in potential hacks and up to a 30% decrease in fraudulent purchase attempts using our integrity and commerce APIs. Express interest in the automatic integrity protection EAP.

Boost your go-to-market

Play Games Services - Friends: Now in open beta, help players easily find and play with friends across Android games. Millions of players have a new platform-level friends list that you can access to bootstrap and enhance your in-game friend networks and have your games surfaced in new clusters in the Play Games app. Start using Google Play Games Services - Friends in your game today.
Pre-registration: Boost early installs with pre-registration and day 1 auto install. Early experiments show a +20% increase in day 1 installs when using this new feature. We have also optimized our day 1 notifications to pre-registered users. Try out the new pre-registration menu in the Play Developer Console to access this feature.
Play store updates: We’re updating games home with a much greater visual experience, showcasing rich game graphics and engaging videos. This provides a more arcade-like browse experience helping users discover new games that match what they like to play. Learn how to optimize your store listing page with the best quality assets.
In-app reviews: Give users the ability to leave a review from within your game, without heading back to the app details page, using our new in-app review API, part of the Play Core Library. Learn more in our recent blog post.

Check out d.android.com/games to learn about these tools and more, and stay up to date by signing up for the games quarterly newsletter.

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Posted by Scott Lin, Product Manager, Google Play

For many developers, ratings and reviews are an important touchpoint with users. Millions of reviews are left on Google Play every day, offering developers valuable insight on what users love and what they want improved. Users also rely on ratings and reviews to help them decide which apps and games are right for them.

Over the past two years, Google Play has launched various features to make it easier for users to leave reviews, as well as for developers to interact and respond to them. For example, users are now able to leave reviews from the Google Play homepage. We also launched the Reviews page under My Apps & Games, which gives users a centralized place to leave and manage reviews.

But one of the most requested features from developers has been to give users the ability to leave a review from within the app, without heading back to the App Details page. So today, we’re pleased to launch the new in-app review API to address that need.

Ask for a review at just the right time

The API lets developers choose when to prompt users to write reviews within the app experience. We believe the best time to prompt your users is when they have used the app enough to be able to provide thorough and useful feedback. However, be sure not to interrupt them in the middle of a task or when their attention is needed, as the review flow will take over the action on the screen.

Users can now give ratings and reviews within your app.

The in-app review API supports both public and private reviews for when your app is in beta.

The review API is part of the Play Core Library, which is distributed for Java/Kotlin, C++, and Unity. It offers a lightweight API that allows apps to request a review and launch the review flow without users leaving the app.

The integration consists of four main steps:

Define the conditions and best place to ask for a review
Request the review flow to the API
Launch the review at an appropriate moment
Continue the flow after the review is completed

Whether the user leaves a review or not, the app must continue without altering the user flow. The in-app review API is designed to be seamless for users.

You can see the in-app review API in action in our newly published sample, which showcases calling the API through the Play Core Kotlin extensions (KTX) library, alongside other Play Core APIs such as in-app updates and on-demand feature modules installation.

Gathering the best feedback

The API will make it much easier for users to share valuable insights about your app.

Here’s what some of our partners said during the early-access program:

“It was quick and easy to integrate with the new In-App Review API changes, and we saw an almost immediate increase in positive ratings and reviews after releasing those changes.”
- Chris Scoville, Engineering Manager at Calm

“The in-app review API allows our customers to rate without leaving the application. Our 5-star ratings since implementing the API has increased by 4x.”
- Nathaniel Khuana, Technical Architect, Tokopedia

"We saw our all-time highest rating just a week after we implemented in-app reviews."

- Welly Chandra, Associate Product Manager at Traveloka

Because the best feedback is honest and unbiased, we designed the API to be self-contained and not require additional prompting other than to invoke the API. We’ve also placed cap limits to ensure that users won’t be prompted excessively should they choose not to leave a review.

We encourage developers to explore integrating the in-app review API as it will unlock the type of feedback that only your dedicated users can provide. And remember, once you receive those reviews, there are a multitude of ratings and reviews tools available to you on the Google Play Console to help you analyze the reviews and respond to users' concerns directly.

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Posted by Dom Elliott and Yafit Becher, Product Managers at Google Play

In a little over two years, the Android App Bundle has become the gold standard for publishing on Google Play. Over 600,000 apps and games currently use the app bundle in production, representing over 40% of all releases on Google Play. App bundles are used by 50% of the top developers on Google Play — such as Adobe, which used app bundles to reduce the size of Adobe Acrobat Reader by 20%.

We recently launched Play Asset Delivery (PAD), bringing the great benefits of app bundles to games and allowing developers to improve the user experience while cutting delivery costs and reducing the size of their games. Gameloft used PAD to improve user retention, resulting in 10% more new players than with their previous asset delivery system.

For those of you making the switch, we’ve published some FAQs on Play App Signing — required for app bundles — as well as guidance on how to test your app bundle. Read on to find out more about the recent improvements we’ve made to developing, testing, and publishing with app bundles.

Play Feature Delivery

The app bundle enables modular app development using dynamic feature modules with a range of customizable delivery options. It’s now possible to shrink resources in dynamic feature modules as well as your base module when building modular apps. This long-requested feature can result in significantly greater size reduction of your apps. The feature is available from Android Studio 4.2, currently in Canary, under the experimental flag: android.experimental.enableNewResourceShrinker=true.

By default, install time modules are now automatically fused when app bundles are processed into distribution APKs (starting in bundletool 1.0.0). This means you can separate your app into modules during development while reducing the number of APKs distributed to each device, which will speed up your app’s download and installation. You can choose to set a “removable flag” for install-time modules to prevent fusing, which allows you to uninstall a module on the device after it’s been used. It’s a good idea to remove large modules once they’re no longer needed — reducing the size of your app can make it less likely to be uninstalled.

Feature-to-feature dependency is now stable in Android Studio 4.0, so you can specify that a dynamic feature module depends on another feature module. Being able to define this relationship ensures that your app has the required modules to unlock additional functionality, resulting in fewer requests and easier modularization of your app.

We know that it is critical for you to test your app delivery and get the same experience as your users would in the wild. Internal app sharing lets you upload test builds to Play and get a sharable link to download your app. When downloading your app from this link, you get an identical binary as would be served to users once your app is released to Play.

Play Asset Delivery

Play Asset Delivery extends the app bundle format, allowing you to package up to 2GB of game assets alongside the binary in a single artifact published on Google Play. PAD lets games larger than 150MB replace the legacy expansion files (OBBs) and rely on Play to keep assets up to date, just like you do with your game binary. It also takes care of compression and delta patching, minimizing the size of the download and getting your game to update faster.

The contents of an Android App Bundle with one base module, two dynamic feature modules, and two asset packs.

You can then choose one of three delivery modes, depending on when you want those assets to be served to users: install-time, as part of the initial game installation; on-demand, so assets will be delivered only upon request; or fast-follow, which will trigger an additional download immediately after the game installation completes, independently of the user opening the app. Fast-follow lets you minimize time to first interaction while getting assets to users as quickly as possible.

In the coming months, we’ll release texture compression format targeting, which will allow you to include multiple texture compression format assets and rely on us to deliver them to the most advanced format supported by the requesting device.

Learn more in this session from our Game Developer Summit and check out the documentation to see integration options for Unity, Unreal Engine, Gradle, Native, and Java support.

Google Play’s best-in-class distribution

Google Play delivers billions of apps, games, updates, and dynamic feature modules every month to Android users on thousands of device types around the world. We invest a lot of time and energy into making sure your content is delivered to users as seamlessly and efficiently as possible while hiding the complexity from the user experience.

For example, we recently upgraded the download service Google Play uses. This change alone has sped up the installation of app bundle apps by an average of 6% and increased install success globally by 1%, resulting in millions more new installs for developers every week.

We’re also rolling out multiple improvements to dynamic feature module distribution, such as allowing them to be installed when your app is VISIBLE or higher, lowering the free storage threshold that triggers insufficient storage errors, and removing user confirmation for large dynamic features over Wi-Fi. This alone has resulted in 12% more successful deferred module downloads. Apps using dynamic features will benefit from these changes automatically.

Requirement for new apps in the second half of 2021

We’re continuing to make app bundles a better publishing format than APKs on Google Play. For example, the new app bundle explorer lets you manage all your app bundles in one place. You can download and attest the exact APKs that Play generates for delivery, as well as a signed, universal APK (a single, installable APK that includes all code and resources needed for supported devices) that you can use on other distribution channels.

We’ve been thrilled to see the app bundle embraced by the app and game ecosystem, and we’re excited to continue to improve it. As we announced in the Android 11 event, to help us invest in future improvements, we intend to require new apps and games to publish with the Android App Bundle on Google Play in the second half of 2021. In the same timeframe, we will deprecate legacy APK expansion files (OBBs), making Play Asset Delivery the standard option for publishing games over 150MB. We will also require instant experiences to be published via instant-enabled app bundles, deprecating the legacy instant app ZIP format.

Thank you to everyone who has already made the switch to the Android App Bundle, and a special thanks to those of you who’ve shared your feedback. Your comments help us shape the future of app bundles and improve the technology for everyone, so please continue to let us know what you think.

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Posted by Tom Grinsted, Product Manager, Google Play Console

Google Play Console has something for everyone, from QAs and PMs to engineers and marketing managers. The new Google Play Console beta, available now at play.google.com/console, offers customized, secure access to everyone on your team. For a closer look at some of its new features and workflows, tune in to this week’s series of live webinars, which will also be available on demand.

Granting your team members safe access to specific features in your developer account is one of the best ways to increase the value of our tools for your organization. We want to make sure that your developer account is as safe as possible so you feel confident when granting access. A key way to do that is to make sure that every person who has access to your account signs in using secure methods that follow best practices. That’s why, towards the end of this year, we’re going to start requiring users of Google Play Console to sign in using Google's 2-Step Verification.

2-Step Verification uses both your password and a second way to identify you for added security. This could be a text message to a registered phone, an authenticator app, alerts on supported devices, or a hardware security key. Normally, you only have to do this when you sign in for the first time on a new computer. It’s one of the easiest ways to increase the level of security for you and your team members’ accounts.

Learn more about 2-Step Verification here, and how to set it up for your own account.

If you have any comments or concerns about using 2-Step Verification to sign in to Google Play Console, or if you think it will impact you or your teams’ use of Google Play Console, use this form to let us know. All responses will be read by our product team and will help us shape our future plans.

Your team won’t be required to use 2-Step Verification immediately, although we recommend that you set it up now. We will start mandating 2-Step Verification with new users to Google Play Console towards the end of Q3, followed by existing users with high-risk permissions like app publishing or changing the prices in in-app products, later in the year. We’ll also remind every impacted user in Google Play Console at least 30 days before the change takes effect. We may also start to re-verify when you’re undertaking a sensitive action like changing your developer name or transferring ownership of an app.

Hundreds of thousands of Google Play Console users already use 2-Step Verification to keep their accounts safe, and it's been the default for G Suite customers for years. But we understand that requiring this may impact some of your existing workflows, which is why we’re giving advance notice of this change and asking for your feedback.

We can all take steps to keep our accounts and the developer community safe. Thanks for publishing your apps on Google Play.

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Posted by Leticia Lago, Head of Developer Marketing, EMEA

We wrapped up the Indie Games Festivals in Europe, Japan, and South Korea. You can now check out the three winners and Top 10 finalists from each of the contests.

The Google Play Indie Games Festival celebrates the creativity and innovation that small games developers bring to the Play Store.

We shortlisted 20 finalists for each contest after receiving hundreds of submissions. The finalists were to showcase their art at events in Warsaw, Tokyo, and Seoul. However, this year’s unprecedented events saw the finalists presenting to jury members online. The juries then deliberated to select the winners.

Winning developers receive prize packages designed to help them grow their business on Android and Google Play. Each package offers promotions on the Google Play Store, consultations with members of the Google Play team, Google hardware, promotion campaigns, and more.

Join us in congratulating the developers and try out their games.