Google IO 2014 overview

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Google IO 2014 overview


  • 2014 Android I/O Overview Bin Yang
  • Agenda Outline Hot topics Update in L preview Google play services update Others 2
  • Outline
  • Outline(1/5) Android is get more and more market share. 4
  • Outline(2/5) Android is still very hot.(40% topics are related to android) 5 72 10 27 15 20 12 7 17 0 10 20 30 40 50 60 70 80 Android ux Tools Performance Cloud services Media Location Others Count(180) Most of topics are related to android
  • Outline(3/5) Wear and Google play service are very hot in Android 6 0 5 10 15 20 25 30 35 40 45 Wear Media Material design Google play Other Topic Series 1 More and more features are implemented as google play service.
  • Outline(4/5) Design goal 7
  • Outline(5/5) Multi Screen seamless connection(WIFI,BT,USB) and phone/tablet is the core. 8 WIFI or BTUSB BT BT Android is be used in more and more devices
  • Hot topics - Wear
  • What is Android Wear Android wear is a device which running on the version of Google's Android operating system designed for smartwatches and other wearables. 10 Watch as primary targeted device from factor. Buletooth teghered only device. High quality and low latencies void recoginition and capture. Controlled by void and by touch screen Colored lcd based ui. Not always on. device. Daynamically waked from gesture and touch. Always on sensors tracking.
  • Use cases Must Google now cards displayed on the weareable device. Host smartphone notifications displayed on the wearable device. Support Google voice search to the host. Maybe Continious sensors tracking Context awarness Pairing with external sensors Pairing with extenral bluetooth headset Local music playback 11 Less than 10s interaction between user and device.
  • Architecture 12 Host android Phone/Tablet Android wear BlueTooth Bluetooth is used to communicate Bluetooth 4.0: GATT and RFCOMM over ERD profiles
  • UI Overview(1/4)-Two Core Components 13
  • UI Overview(2/4)-Suggest: The Context Stream The context stream is a vertical list of cards. Card: showing a useful or timely piece of information from a application. swipe vertically to navigate from card to card Page: are additional cards that can appear to the right of your main card in the stream. swiped horizontally to reveal additional pages. Action: appear to the right of your notification, allowing the user to act on your notification Notification Stacks Stacks may be used to collect multiple notifications from the same application into a single stack of cards. 14 Each notification from phone appears as a new card in the context stream default
  • UI Overview(3/4)- Demand: The Cue Card The cue card allows users to speak to their device. The cue card is opened by saying, "Ok Google" or by tapping on the "g" icon on the home screen. Swiping up on the cue card shows a list of actions. 15
  • UI Overview(4/4)- Two Modes Ambient Mode: The glanceable, low-power mode that devices will spend most of their time in. For displays that are capable of always displaying an image within their power budgets,this mode is for displaying static and ambient information. Touch is enabled and can be at a lower refresh rate. Voice input is disabled. Interactive Mode: The devices on state(e.g., the display is in maximum visibility mode and animations can be displayed, etc.) Touch and Voice input are enabled. 16
  • Hot topics - TV
  • Android TV-Features Handle a wide variety of traditional TV inputs, including HDMI, conventional TV tuners, and IPTV receivers. Chromecast support. Full access to Google Plays existing media content Integrated with Googles existing Play Games Service Will be coming to a variety of form factors, including TVs, set-top boxes, and streaming boxes. 18
  • Android TV-Architecture 19
  • Android TV - Hardware requirement Aggressive CPU+GPU performance specs Minimum of 1G RAM & 8G Flash Wi-Fi and/or Ethernet for connectivity Bluetooth v4 w/BTLE Widevine Level 1& Playready DRM Targeting TVs, Media Streamers, Set Top Boxes and Micro Consoles. 20
  • Android TV-UI Search Recommendations Apps and Games Settings 21
  • Android TV-Difference with Google TV 22 Item Google TV Android TV OS Custom OS derived from Android Derived from Android 4.2 and runs a closed Google services for TV layer in the background. Working Mode Google hold the keys to Google TV only allowing certain vendors use it Google has relaxed the restrictions on who can use Android TV. APP support App support is very limited and restricted to Google TV apps. Compatibility with full Android app ecosystem but Google may still limit it to apps tagged as TV compatible. Chromecast Not support Support
  • Hot topics - Auto
  • Auto UI - Launcher 24 The UI is consistent
  • Auto UI - APP 25 Developers can customize the icon and functionality
  • Architecture-Software(1/2) 26 Android apps and services is running in phone
  • Architecture-Software(1/2) Media App as example 27 Android Auto App works as a proxy in car
  • Architecture Hardware in car Audio device in the car Display in the car USB/other connectivity device in the car Bluetooth device in the car Input devices(buttons and sticks, etc.) in the car Sensor networks in the car 28
  • Architecture - Auto protocol(1/2) Android auto protocol is used to communicate the phone with auto. It is a transport independence protocol USB WIFI direct 29
  • Architecture - Auto protocol(2/2) Portable C++ library runs on Android/Linux/QNX. Different channel is opened for different aspect of car which phone needs to communicate with Input data sensor data audio Display data. Protocol buffer is used to format data. 30 Mux all channels with priority
  • Hot topics - Glass
  • What is Google glass A wearable device Released at 2013.4 about $1500 32
  • Hardware feature 500W Camera, 720p Video WIFI ,BT 16G flash/2G memory Touchpad 640X360px display Gyroscope,accelerometer,compass Microphone, Eye tracker, head tracker. GPS/Calls/SMS/GPS/Internet through phone. 33
  • Architecture 34
  • Architecture(2) Modification in AOSP Account service Glass does authentication using My Glass website. So many task can be executed in server side. Location service GPS information is piped through your companion phone for better accuracy. Notification bridged from companion phone Head Gesture services: Monitor your head when you are moving your head, so that it can turn on/off the screen. Eye Gesture: Monitor the movement of your eyes so that it can take pictures. Timeline Manager 35
  • API Glass Development Kit An add-on to the Android SDK that lets you build Used to implement the features below Real-time User Interaction Offline Functionality Access to Hardware 36
  • API Mirror API RESTful API lets you easily call web-based APIs that do much of the heavy lifting for you Used to implement the features below Platform independence 37 Google Mirror API (REST API) Glass service app1 Google Glass Sync HTTPS(JOSN) USER Oauth2
  • UI 38
  • Hot topics - Android work
  • Advantage Make user to have a single device for personal use and work. Unified view of personal and work apps. Data isolation and security. No modification for existing apps needed App for ICS and above can be used. 40
  • UI for android work Unified view of notifications Unified view of recent A single launcher for personal use and work. 41
  • Architecture 42 It seems most of work is implemented in Google play services
  • Update In L preview
  • Update In L preview Material design ART Notification Recents screen Task locking Power Efficiency BT Graphics Multi-networking Multimedia Webview 44
  • Material Design - New Widgets RecyclerView A container for large sets of views that can be recycled and scrolled more efficiently than ListView Can be vertical and horizontal scrolling There are baked-in animations for adding and removing views. CardView Shows information inside card 45 Supported in
  • Material design - Shadows View Elevation Z value is added for a view (Z = elevation + translationZ) A view with a lower elevation will have small, well- defined shadows Framework will cast a real time shadow for the view according to elevation. 46 Material is used for all of Google such as phone/tablet/tv/chrome
  • Material design - Animations Touch feedback -- ripple animation Reveal effect reveal animation Activity transitions Enter transition Exit transition Shared elements transition(Multiple shared elements) Curved motion Provides new APIs that enable you to define custom timing curves and curved motion patterns for animations. View state changes Animators that run when the state of a view changes. 47
  • Material design - Others Drawable Tinting Enables you to define bitmaps or nine-patches as alpha masks and to tint them using a color resource or a theme attribute that resolves to a color resource A new theme @android:style/Theme.Material Compatibility For Theme and layout, use dedicated directory such as res/values-v21/styles.xml For Animation APIs, check the system version at runtime before calling them. 48
  • ART Ahead-of-Time (AOT) compilation Less battery consumption. Less memory. More storage/More installation time. Improved garbage collection (GC) One GC pause instead of two Parallelized processing during the remaining GC pause Collector with lower pause time for the special case of cleaning up recently-allocated, short-lived objects Improved garbage collection ergonomics, making concurrent garbage collections more timely, which makes GC_FOR_ALLOC events extremely rare in typical use cases Improved debugging support 49
  • Notification(1/2) heads-up notification Show the notification when app is running as full screen. Lockscreen notifications VISIBILITY_PRIVATE/ VISIBILITY_PUBLIC/ VISIBILITY_SECRET Notification will be displayed in Lock scrren according to its prioerty. Notifications metadata Metadata is used to sort the notifications more intelligently. setCategory/setPriority/addPerson 50
  • Notification(2/2) Notifications to support android wear and auto Can specify the notification only is displayed in wear or android. Synced notifications Act on a notification on your Android tablet and it is also dismissed on your phone. 51
  • Recents screen Using CardView to display the recents Support concurrent documents and activities Using Intent.FLAG_ACTIVITY_NEW_DOCUMENT or documentLaunchMode="intoExisting to start a activity as a new task For example. web browser app, documents in a productivity app 52
  • Task locking Temporarily restrict users from leaving your app or being interrupted by notifications. For example: Using an education app How to: Call startLockTask() in activity. If the task is locking The status bar is blank, and user notifications and status information is hidden. The Home and Recent Apps buttons are hidden. Other apps may not launch new activities. The current app may start new activities, as long as doing so does not create new tasks. 53
  • BT Peripheral mode Android device in L version can work as in peripheral mode which can send advertisement. Improved scanning. Offload scanning into background. Add API to filter the advertisement which you has interest to reduce the number of advertisement. (Service UID, service data, manufacture data) Reduce the scanning frequency. 54
  • Power Efficiency Scheduling jobs - defining jobs for the system to run asynchronously at a later time or under specified conditions specific conditions, such as: The device is charging The device is connected to an unmetered network The system deems the device to be idle Completion with a minimum delay or within a specific deadline New tools dumpsys batterystats generate interesting statistical data data Battery Historian t...