Android 4.3 and Updated Developer Tools

Posted by Dave Burke, Engineering Director, Android Platform

Today in San Francisco we announced Android 4.3, a sweeter version of Jelly Bean that includes great new features for users and developers. Android 4.3 powers the new Nexus 7 tablet that's coming soon to Google Play and retail outlets, and it’s rolling out now as an update to Nexus 4, Nexus 7, Nexus 10, and Galaxy Nexus HSPA+ devices across the world.

For developers, Android 4.3 includes the latest performance enhancements to keep your apps fast, smooth, and efficient, together with new APIs and capabilities to use in your apps. Here's a taste of what's new:

• OpenGL ES 3.0 — Game developers can now take advantage of OpenGL ES 3.0 and EGL extensions as standard features of Android, with access from either framework or native APIs.


• Bluetooth Smart — Now your apps can communicate with the many types of low-power Bluetooth Smart devices and sensors available today, to provide new features for fitness, medical, location, proximity, and more.


• Restricted profiles — Tablet owners can create restricted profiles to limit access to apps, for family, friends, kiosks, and more. Your app can offer various types of restrictions to let tablet owners control its capabilities in each profile.


• New media capabilities — A modular DRM framework enables media application developers to more easily integrate DRM into their own streaming protocols such as MPEG DASH. Apps can also access a built-in VP8 encoder from framework or native APIs for high-quality video capture.


• Notification access — Your apps can now access and interact with the stream of status bar notifications as they are posted. You can display them in any way you want, including routing them to nearby Bluetooth devices, and you can update and dismiss notifications as needed.


• Improved profiling tools — New tags in the Systrace tool and on-screen GPU profiling give you new ways to build great performance into your app.

Check out the Android 4.3 platform highlights for a complete overview of what’s new for developers. To read more about the new APIs and how to use them, take a look at the API Overview or watch the new DevBytes videos.

Along with the new Android 4.3 platform we’re releasing an update to the Android NDK (r9). The new NDK gives you native access to the OpenGL ES 3.0 APIs and other stable APIs in Android 4.3, so if you use high-performance graphics in your games or apps, make sure to check it out.

Last, we’ve updated the Android Support Library (r18) with several key APIs to help you build great apps with broad compatibility. Most important, we've added an Action Bar API to let you build this essential Android design pattern into your app with compatibility back to Android 2.1. For apps targeting RTL languages, there's a new BidiFormatter utility you can use to manage RTL strings with compatibility back to Android 2.1. Also, watch for a new RenderScript feature coming soon that will let you take advantage of hardware-accelerated computation with compatibility back to Android 2.2.

You can get started developing and testing on Android 4.3 right away, in Android Studio or in ADT/Ant. You can download the Android 4.3 Platform (API level 18), as well as the SDK Tools, Platform Tools, and Support Library from the Android SDK Manager.

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Making Beautiful Android App Icons

Posted by Roman Nurik, Android Developer Relations

For most users, the launcher icon (sometimes referred to as the app icon) is the first impression of your app. As higher density screens on both phones and tablets gain popularity, it's important to make sure your launcher icon is crisp and high quality. To do this, make sure you’re including XHDPI (320dpi) and XXHDPI (480dpi) versions of the icon in your app.

In addition to the current launcher icon guidelines, please also refer to these additional important guidelines when creating your icons:

• Launcher icons are 48dp square and should be provided for MDPI, HDPI, XHDPI, and XXHDPI densities—at the very least XHDPI and XXHDPI.


• The 512px Google Play listing icon should have the same content as the launcher icon, except for minor additional badging.


• Launcher icons should be designed specifically for Android. As per the Pure Android design guidelines, avoid mimicking visual elements and styles from other platforms.


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  Launcher icons should be three-dimensional, front view, with a slight perspective as if viewed from above, so that users perceive some depth.


• Launcher icons should have a distinct silhouette, meaning that you should avoid simple square/circle icons and instead opt for unique shapes.


• Launcher icons should be simple at the macro level but still detailed at the micro level (e.g. include subtle edge effects, gradients and textures).


• Launcher icons should employ lightweight background protection such as a subtle drop shadow, but it should not be too dark or visually prominent.


• Launcher icons should include between 0dp and 3dp of padding. Vary the padding for optical alignment and weight normalization purposes (e.g. thinner icons can use smaller padding and thicker icons can use less padding for a more consistent icon mass across icons).

Note that tablets and other large screen devices request a launcher icon that is one density size larger than the device's actual density, so you should provide your launcher icon at the highest density possible. For example, if a tablet has an XHDPI screen, it will request the XXHDPI version of the launcher icon.

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Mid Year 2013 Android Developer Survey

Posted by Reto Meier, Android Developer Relations Tech Lead



The 2013 mid-year Android Developer Survey is now open!



Last year more than 5,000 of you shared your Android Development experiences and challenges with us, and your responses directly influenced our choices and priorities for building things like Android Studio, the new Google Play Publishing Console, and the Google Play services.

We in the Android Developer Relations team are passionate about making Android app development a great experience, so we're once again asking all of you involved in developing Android apps - engineers, designers, product managers, and distribution and support folks - to let us know what you think.



We want to better understand the challenges you face when planning, designing, writing, distributing, and monetizing your Android apps, so we've put together this brief (15-20min) survey that will help us create better tools and resources for you.



In an effort to get a better representation of developers from around the world the survey is available in the following languages:

• English Language Android Developer Survey


• Japanese Language Android Developer Survey


• Chinese (Simplified) Language Android Developer Survey


• Chinese (Traditional) Language Android Developer Survey

Last year you told us you'd like a way to give us general written feedback, so to facilitate this while keeping the survey short and simple, we've included a link at the end of the survey that will let you send us as much direct feedback as you care to, completely anonymously.



Of course, you can always send us your thoughts, questions, suggestions, and complaints any time by posting to us (publicly or privately) on Google+ at +Android Developers or using the hash tag #AndroidDev.



As always, we're looking forward to hearing your thoughts!

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The Beautiful Design Summer 2013 Collection on Google Play

Posted by Marco Paglia, Android Design Team

Attention to detail makes an app truly beautiful: transitions are fast and clear, layout and typography are crisp and meaningful, and design touches that delight you in surprising ways are sprinkled throughout. Today, we’re publishing a new Beautiful Design collection on Google Play, which highlights 11 beautiful apps with these kinds of masterfully crafted design details.

The collection, which we’ll refresh with new apps every so often, currently includes:

• Pattrn (by Lucas Rocha), a beautifully focused app for discovering and sharing unique wallpapers on any size screen device.


• Pocket (by Read It Later), an article keeper and reader app with a beautiful queue browsing interface and a remarkably comfortable and pleasing reading experience on phones and tablets.


• Timer (by Opoloo), a timer app with an elegant and deeply satisfying timer-creation interface and simple, beautiful theme choices.


• Eye in Sky Weather, NY Times, Grand St., Pinterest, Press, Expedia, Flipboard and TED… each with delightful design details.

If you’re an Android developer, make sure to play with some of these apps to get a sense for the types of design details that can separate good apps from great ones.

Lastly, remember that this new Beautiful Design collection is just one of a number of unique collections on Google Play that are front and center in the new Google Play Store app client.

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