Android Nougat is running on 2% on Android Devices now Google has announced first developer preview of the next version of the OS Android O. Google we’ll be releasing updated developer previews, more details will be announced at Google I/O in May.



What’s new in O?

Android O introduces some new features and APIs to use in your apps. Here’s are just a few new things for you to start trying in this first Developer Preview:

Background limits: Android O puts a big priority on improving a user’s battery life and the device’s interactive performance. To make this possible Google has put additional automatic limits on what apps can do in the background, in three main areas: implicit broadcasts, background services, and location updates. These changes will make it easier to create apps that have minimal impact on a user’s device and battery. Background limits represent a significant change in Android, Check out the documentation on background execution limits and background location limits for details.

Notification channels: Android O also introduces notification channels, which are new app-defined categories for notification content. Channels let developers give users fine-grained control over different kinds of notifications — users can block or change the behavior of each channel individually, rather than managing all of the app’s notifications together.

Android O also adds new visuals and grouping to notifications that make it easier for users to see what’s going on when they have an incoming message or are glancing at the notification shade.

Autofill APIs: Android users already depend on a range of password managers to autofill login details and repetitive information, which makes setting up new apps or placing transactions easier. Now we are making this work more easily across the ecosystem by adding platform support for autofill. Users can select an autofill app, similar to the way they select a keyboard app. The autofill app stores and secures user data, such as addresses, user names, and even passwords. For apps that want to handle autofill, we’re adding new APIs to implement an Autofill service.

PIP for handsets and new windowing features: Picture in Picture (PIP) display is now available on phones and tablets, so users can continue watching a video while they’re answering a chat or hailing a car. Apps can put themselves in PiP mode from the resumed or a pausing state where the system supports it – and you can specify the aspect ratio and a set of custom interactions (such as play/pause). Other new windowing features include a new app overlay window for apps to use instead of system alert window, and multi-display support for launching an activity on a remote display.

Font resources in XML: Fonts are now a fully supported resource type in Android O. Apps can now use fonts in XML layouts as well as define font families in XML — declaring the font style and weight along with the font files.

Adaptive icons: To help you integrate better with the device UI, you can now create adaptive icons that the system displays in different shapes, based on a mask selected by the device. The system also animates interactions with the icons, and them in the launcher, shortcuts, Settings, sharing dialogs, and in the overview screen.

Wide-gamut color for apps: Android developers of imaging apps can now take advantage of new devices that have a wide-gamut color capable display. To display wide gamut images, apps will need to enable a flag in their manifest (per activity) and load bitmaps with an embedded wide color profile (AdobeRGB, Pro Photo RGB, DCI-P3, etc.).

Connectivity: For the ultimate in audio fidelity, Android O now also supports high-quality Bluetooth audio codecs such as LDAC codec. We’re also adding new Wi-Fi features as well, like Wi-Fi Aware, previously known as Neighbor Awareness Networking (NAN). On devices with the appropriate hardware, apps and nearby devices can discover and communicate over Wi-Fi without an Internet access point.



Keyboard navigation: With the advent of Google Play apps on Chrome OS and other large form factors, we see a resurgence of keyboard navigation use within these apps. In Android O we focused on building a more reliable, predictable model for “arrow” and “tab” navigation that aids both developers and end users.

AAudio API for Pro Audio: AAudio is a new native API that’s designed specifically for apps that require high-performance, low-latency audio. Apps using AAudio read and write data via streams.

WebView enhancements: In Android Nougat we introduced an optional multiprocess mode for WebView that moved the handling of web content into an isolated process. In Android O, we’re enabling multiprocess mode by default and adding an API to let your app handle errors and crashes, for enhanced security and improved app stability.

Java 8 Language APIs and runtime optimizations: Android now supports several new Java Language APIs, including the new Java.Time API. Also, the Android Runtime is faster than ever before, with improvements of up to 2x on some application benchmarks.

Partner platform contributions: Hardware manufacturers and silicon partners have accelerated fixes and enhancements to the Android platform in the O release. For example, Sony has contributed more than 30 feature enhancements, including the LDAC codec, and 250 bug fixes to Android O.

Plan how your app will support background limits and other changes. Try out some of the great new features in your app — notification channels, PIP, adaptive icons, font resources in XML, auto sizing TextView, and many others. To make it easier to explore the new APIs in Android O, we’ve brought the API diff report online, along with the Android O API reference.

Coming later today, the latest canary version of Android Studio 2.4 includes new features to help you get started with Android O. When this update is available, you can download and set up the O preview SDK from inside Android Studio, then use Android O’s XML font resources and auto sizing TextView in the Layout Editor. Watch for more Android O support coming in the weeks ahead. Also releasing an alpha version of the 26.0.0 support library for you to try. It includes compat APIs for Android O’s auto sizing TextView, as well as improved Preference and PreferenceActivity APIs.

Which Phones to get  Android O Preview updates?

The O Developer Preview includes an updated SDK with system images for testing on the official Android Emulator and on Nexus 5X, Nexus 6P, Nexus Player, Pixel, Pixel XL and Pixel C devices
there’s also an emulator for testing Android Wear 2.0 on Android O. This initial preview release is for developers only and not intended for daily or consumer use, so we’re making it available by manual download and flash only Here’s How to Download Android O



Android Beta is not currently available for Android O.More details will be announced at Google I/O

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