Android "Oreo" (code named Android O during development) is the eighth major version of the Android mobile operating system. It was first released as an alpha quality developer preview in March 2017 and released to the public on August 21, 2017.
Android Oreo was internally code named "Oatmeal Cookie.On March 21, 2017, Google released the first developer preview of Android "O", available for the Nexus 5X, Nexus 6P, Nexus Player, Pixel C, and both Pixel smartphones.
Notifications can be snoozed, and batched into topic-based groups known as "channels".Android Oreo contains integrated support for picture-in-picture modes (supported in the YouTube app for YouTube Red subscribers).Adding a custom ringtone, alarm or notification sound is simplified.The "Settings" app features a new design, with a white theme and deeper categorization of different settings. Android TV features a new launcher.Google claims faster startup times from a powered-off state,and improved battery life by minimizing background activity for infrequently used apps.
Android Oreo adds support for Neighborhood Aware Networking (NAN) for Wi-Fi based on Wi-Fi Aware, Bluetooth 5, wide color gamuts in apps,an API for autofillers, multiprocess and Google Safe Browsing support for WebViews, an API to allow system-level integration for VoIP apps, and launching activities on remote displays. Android Runtime (ART) features performance improvements and better cache handling. Android Oreo contains additional limits on apps' background activities in order to improve battery life. Apps can specify "adaptive icons" for differently-shaped containers specified by themes, such as circles, squares, and squircles.