Hello guys
Today will get little knowledge about android lollipop . Android Lollipop is latest version of android OS. It already been updated to some of the smart phone like Nexus 5 and Moto G2. L version included amazing animation and Graphics to the software and users are enjoying this .But whats challenges raised or erased for the Developers .We will learn about it here.
Lollipop framework :
Welcome to Android 5.0 Lollipop—the largest and most ambitious release for Android yet!
This release is packed with new features for users and thousands of new APIs for developers. It extends Android even further, from phones, tablets, and wearables, to TVs and cars.
For a closer look at the new developer APIs, see the Android 5.0 API Overview. Or, read more about Android 5.0 for consumers atwww.android.com.
Material Design:
Android 5.0 brings Material design to Android and gives you an expanded UI toolkit for integrating the new design patterns easily in your apps.
This new terminology comes with 3d view . It let you set z axis along xy axis so that you can added shadow to any view very easily .Apart from this beautiful inbuilt activity transition to Activity class . e.g. if we switch from one activity to another then there would be beautiful animation between two activity.
You can also define vector drawables in XML and animate them in a variety of ways. Vector drawables scale without losing definition, so they are perfect for single-color in-app icons.
A new system-managed processing thread called RenderThread keeps animations smooth even when there are delays in the main UI thread.
Performance tips :
Android 5.0 provides a faster, smoother and more powerful computing experience.Android now runs exclusively on the new ART runtime (Android Runtime).
Unlike Dalvik, which since Android 2.2 "Froyo" uses just-in-time (JIT) compilation to compile the bytecode every time an application is launched,[2] ART introduces use of the ahead-of-time (AOT) compilation by performing it upon the installation of an application. By reducing the overall amount of compilation that needs to be performed across the operation of an application, a mobile device's processor usage is reduced and battery runtime is improved. At the same time, ART brings improvements in performance, garbage collection, applications debugging andprofiling.
Android 5.0 introduces platform support for 64-bit architectures—used by the Nexus 9's NVIDIA Tegra K1. Optimizations provide larger address space and improved performance for certain compute workloads. Apps written in the Java language run as 64-bit apps automatically—no modifications are needed. If your app uses native code, we’ve extended the NDK to support new ABIs for ARM v8, and x86-64, and MIPS-64.
Notifications:
Varying notification details may appear on the lock screen if desired by the user. Users may elect to allow none, some, or all notification content to be shown on a secure lock screen.
Key notification alerts such as incoming calls appear in a heads-up notification—a small floating window that allows the user to respond or dismiss without leaving the current app.
You can now add new metadata to notifications to collect associated contacts (for ranking), category, and priority.
A new media notification template provides consistent media controls for notifications with up to 6 action buttons, including custom controls such as "thumbs up"—no more need for RemoteViews!
Advance connectivity:
Android 5.0 adds new APIs that allow apps to perform concurrent operations with Bluetooth Low Energy (BLE), allowing both scanning (central mode) and advertising (peripheral mode).
New multi-networking features allow apps to query available networks for available features such as whether they are Wi-Fi, cellular, metered, or provide certain network features. Then the app can request a connection and respond to connectivity loss or other network changes.
NFC APIs now allow apps to register an NFC application ID (AID) dynamically. They can also set the preferred card emulation service per active service and create an NDEF record containing UTF-8 text data.
Hight performance graphics:
Support for Khronos OpenGL ES 3.1 now provides games and other apps the highest-performance 2D and 3D graphics capabilities on supported devices.
OpenGL ES 3.1 adds compute shaders, stencil textures, accelerated visual effects, high quality ETC2/EAC texture compression, advanced texture rendering, standardized texture size and render-buffer formats, and more.
Android 5.0 also introduces the Android Extension Pack (AEP), a set of OpenGL ES extensions that give you access to features like tessellation shaders, geometry shaders, ASTC texture compression, per-sample interpolation and shading, and other advanced rendering capabilities. With AEP you can deliver high-performance graphics across a range of GPUs.
More Powerful Audio:
A new audio-capture design offers low-latency audio input. The new design includes: a fast capture thread that never blocks except during a read; fast track capture clients at native sample rate, channel count, and bit depth; and normal capture clients offer resampling, up/down channel mix, and up/down bit depth.
Multi-channel audio stream mixing allows professional audio apps to mix up to eight channels including 5.1 and 7.1 channels.
Apps can expose their media content and browse media from other apps, then request playback. Content is exposed through a queryable interface and does not need to reside on the device.
Apps have finer-grain control over text-to-speech synthesis through voice profiles that are associated with specific locales, quality and latency rating. New APIs also improve support for synthesis error checking, network synthesis, language discovery, and network fallback.
Android now includes support for standard USB audio peripherals, allowing users to connect USB headsets, speakers, microphones, or other high performance digital peripherals. Android 5.0 also adds support for Opus audio codecs.
New
MediaSession APIs for controlling media playback now make it easier to provide consistent media controls across screens and other controllers.
Android in the workplace:
To enable bring-your-own-device for enterprise environments, a new managed provisioning process creates a secure work profile on the device. In the launcher, apps are shown with a Work badge to indicate that the app and its data are administered inside of the work profile by an IT administrator.
Notifications for both the personal and work profile are visible in a unified view. The data for each profile is always kept separate and secure from each other, including when the same app is used by both profiles.
For company-owned devices, IT administrators can start with a new device and configure it with a device owner. Employers can issue these devices with a device owner app already installed that can configure global device settings.
Screen capturing and sharing:
Android 5.0 lets you add screen capturing and screen sharing capabilities to your app.
With user permission, you can capture non-secure video from the display and deliver it over the network if you choose.
New Sensors:
n Android 5.0, a new tilt detector sensor helps improve activity recognition on supported devices, and a heart rate sensor reports the heart rate of the person touching the device.
Tools for building battery-efficient apps:
New job scheduling APIs allow you optimize battery life by deferring jobs for the system to run at a later time or under specified conditions, such as when the device is charging or connected to Wi-Fi.
Battery Historian is a new tool to convert the statistics from
dumpsys batterystats into a visualization for battery-related debugging. You can find it at https://github.com/google/battery-historian.
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