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![Targeting the Google TV
• The AndroidManifest.xml rules:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.example.phototv" android:versionCode="1" android:versionName="1.0" >
<uses-sdk android:minSdkVersion="13" android:targetSdkVersion="15" />
<supports-screens
android:anyDensity="true" android:largeScreens="true"
android:normalScreens="false" android:smallScreens="false"
android:xlargeScreens="false" />
<uses-feature android:name="android.hardware.touchscreen" android:required="false" />
<uses-feature android:name="com.google.android.tv" android:required="true"/>
<uses-permission android:name="com.google.android.tv.permission.READ_CHANNELS">
<application
android:icon="@drawable/ic_launcher" android:label="@string/app_name" >
<activity android:screenOrientation="unspecified"
android:name=".PhotoTV" android:label="@string/app_name">
<intent-filter> [...] </intent-filter>
</activity>
</application>
</manifest>
Enlarge your screen
Matteo Bonifazi - Stefano Sanna](https://image.slidesharecdn.com/googletvgdgdevfestfirenze2012-121201075450-phpapp01/75/Enlarge-your-screen-17-2048.jpg)
Uploaded byMatteo Bonifazi
Enlarge your screen
The document is a presentation about Google TV. It discusses the timeline of Google TV, how it works by connecting a set-top box to a TV via HDMI, and how to write apps for Google TV using the Android SDK. It also covers using Google TV with second screens and the Anymote protocol. The presentation includes a demo of a photo viewer app and discusses best practices for navigation and controls in the 10ft TV environment.
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Enlarge your screen
- 1. Enlarge your screen :-) Introducing the Google TV Matteo Bonifazi - Stefano Sanna GDG Roma Florence - 2012/10/19
- 2. Let’s talk about... •Speakers • Android happens elsewhere • Google TV • timeline • how it works • writing apps for the Google TV • beyond the TV: second screen and Anymote • DEMO • Conclusion Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 3. Ladies & gentlemen... •Matteo Bonifazi • Android Developer @ Open Reply Android Lab • Member of GDG L-Ab Roma • Stefano Sanna • Head of Open Reply Android Lab • Author (with E. Di Saverio) of “Android Programmazione Avanzata” (Ed. FAG) Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 4. For most peopleAndroid is... Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 5. Android happens elsewhere •“Beyond the product” (being an operating system), Android is a rich eco-system: open source, widely supported by manufacturers and developers... • Its strong and stable Linux foundation makes Android an affordable alternative to “typical Linux distribution” for embedded systems Enlarge your screen Matteo Bonifazi - Stefano Sanna
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- 8. Today Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 9. Google TV • Amongthese “unconventional” Android devices, the Google TV is the official platform for (upcoming?) interactive services “beyond smartphones and tablets” • Although it has still not been announced in Italy, Google TV has landed in Europe (UK) this year and it will be available in other country later in 2012 Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 10. Timeline • 2007/11 • Android is announced • 2008/09 • T-Mobile G1 launched • 2010/06 • Launch of Google TV 1st gen as a “closed platform” • 2011/02 • Motorola Xoom officially brings Android into the tablet market • 2011/08 • Google TV SDK (beta) is published: the platform is now open! • 2011/10 • Google TV update includes Android Market • 2011/11 • Ice Cream Sandwich merges smartphone and tablets in a single platform • 2012/06 • Google TV 2.0 and Jelly Bean mark new Android evolution Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 11. Google TV hardware •First generation devices • Sony NSZ-GT1 (Blu-ray Player) • Sony NSX-40GT1 (Internet TV) • Logitech Revue (set-top box) • New generation devices • LG 47G2/55G2 (Internet TV) • Sony NSZ-GS7 (set-top box) • Vizio Co-Star (set-top box) • More to come later this year... Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 12. Any TV withHDMI input How it works Any DVB-T, DVB-S, DVB-C decoder with HDMI output HDMI IN HDMI OUT Internet connection via Optional external Ethernet or WiFi storage via USB 2.0 Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 13. Logitech Revue • Firstgeneration of Google TV device • Based on Intel ATOM CPU • Recently updated to Honeycomb 3.2 • Supports ADK, HLS and USB storage • Affordable (about €150 with keyboard) • Unfortunately it is no longer sold... but it can be easily found used or brand-new on ebay! :-) Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 14. Sony NSZ-GS7 • Secondgeneration of Google TV • First STB launched in Europe (July 2012)! • Based on ARM CPU • Equipped with Honeycomb 3.2 • Not so cheap (about €250) with enhanced remote controller Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 15. Google TV mainfeatures • For end-users • Rent movies and TV episodes on demand • Youtube • Chrome • 3rd party apps • Movies, pictures, music on local storage • For developers • Honeycomb 3.2 platform • Rich, powerful and well-known Android multiscreen API • Google Play Store for distributing apps Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 16. Google TV API •The Google TV platform consist of 0 (ZERO) NEW API over the “standard” platform! • A new Content Provider and a few constants provide the way to address channel switching and filter platform specific features • Android SDK and Eclipse are the basic toolkit for targeting the Google TV! Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 17. Targeting the GoogleTV • The AndroidManifest.xml rules: <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="org.example.phototv" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="13" android:targetSdkVersion="15" /> <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="false" android:smallScreens="false" android:xlargeScreens="false" /> <uses-feature android:name="android.hardware.touchscreen" android:required="false" /> <uses-feature android:name="com.google.android.tv" android:required="true"/> <uses-permission android:name="com.google.android.tv.permission.READ_CHANNELS"> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:screenOrientation="unspecified" android:name=".PhotoTV" android:label="@string/app_name"> <intent-filter> [...] </intent-filter> </activity> </application> </manifest> Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 18. Test environment • Thebest is to have a real set-top box • If not available, install the Google TV Add-on • Runs on Linux 64bit with KVM Kernel • Can’t run on virtual environments • Does not support video streaming (as for Platform 1.0) • The DIY way: a old-fashioned Android 1.x device (HTC Dream, HTC Magic, Samsung Galaxy) with D-PAD can be used to test navigation! Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 19. Configure the set-topbox • Run the initial configuration (language, screen size, network, Google Account...) • Apps deployment and debugging is over the network connection. USB ports work in host mode. • Try to have a fixed IP address for both Google TV STB and development workstation • Enable remote debugging and assign remote debugging host IP • If using a Logitech Revue: set resolution to 720p (sigh!) to get screenshots via ADB Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 20. Let them findeach other... :-) set-top box host AndroidDev:~ gdx$ adb connect GTV_IP_ADDRESS Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 21. Size and density •The TV screen is classified as “large” • HD Ready TV (720p) are classified as tvdpi density, 213 dpi • Full HD TV (1080p) are classified as xhdpi density, 320 dpi • 720p and 1080p have the same “independent” resolution: 960x540dp Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 22. Size, density anddistance TV Full HD 30” - 320dpi smartphone 5” - 320dpi 30-50cm 300cm
- 23. The 10ft environment •The UI is at 10ft (about 3m) from the user which • is in a relaxing/funny environment • is shared with family and friends • is in a dimmed environment • provides (high quality) audio that is not (usually) optional • has no keyboards and mouse/touchpads, that are (usually) replaced by compact remote controllers with simple 5-way navigation (aka D-PAD) Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 24. A closer lookto the controller D-PAD, BACK, MENU, HOME, PiP An embedded accelerometer disables the QWERTY keyboard when using the trackpad, which is disabled when using the back keyboard TRACKPAD with hard button (as in MBP) BACK-LIGHT QWERTY KEYBOARD Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 25. Good practices • UI • Dynamic layouts and relative sizes are encouraged • Different screens may have different overscan areas: never rely on physical pixels!!! • App layout should be divided in three areas: global, contextual and detail Source: https://developers.google.com/tv/android/docs/gtv_android_patterns Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 26. Good practices • Navigation • Every App should be implemented according to D-PAD navigability • All the controls in each View has to be get through the D-PAD • Controls • Avoid long typing: try, if possible, to suggest texts, shortcuts... • Limit use of pointing device • False friend: “it seems a big tablet”. It is not. The user can’t swipe on it! • BACK is your friend! Source: https://developers.google.com/tv/android/docs/gtv_android_patterns Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 27. DEMO a photo viewer Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 28. Album selection Photo viewer “views” Album overview Picture browser Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 29. Main and subnavigation • The developer has to identify main navigation (on the detail view, where the user spends more of his time) and sub navigation (contextual view, used less often) • In the photo browser app: • Likelihood, the user will spend most of time browsing photos of an album, instead of jumping between albums • The main navigation is the photo browser within an album • The sub navigation is the selection of an album • The main navigation should performed using just the D-PAD • The sub navigation could be accessed using secondary button (e.g., MENU and BACK) Enlarge your screen Matteo Bonifazi - Stefano Sanna Google will forgive us for this... ;-)
- 30. Navigation NAV: CENTER UP/DOWN/LEFT/RIGHT MENU NAV: UP/DOWN BACK CENTER MENU CENTER NAV: LEFT/RIGHT NAV: BACK LEFT/RIGHT
- 31. Beyond the TV Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 32. Second Screen applications •Enhance interactions between Google TV and others device ( smartphone,tablets,etc.) • Adding more functionality for the Google TV itself • Huge opportunities to develop new different kind of application Able Remote: Transform your Android Multiplayer Games: Android device is the device in a custom Google TV Remote joystick and the TV is the controller Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 33. Anymote • Anymote protocolis IP layer protocol • Devices use TLS/SSL to avoid sniffing issues • Thanks to Anymote service Google TV stb can receive and respond to Anymote messages • In order to communicate with the Google TV, a remote app does: • Identifies Google TV • Authenticates the device through Paring Protocol • Sends events (connection, key, mouse, trackball...) Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 34. Conclusions • Have funwith smartphones and tablet, but don’t forget that it is only the beginning! • Google TV enlarges “screens and opportunities” • new entertainment machine for people not so comfortable with computers • second screen applications may enhance UX and encourage gaming • Google TV could be the cornerstone of new home automation application and services: the STB is always powered, always connected, always accessible Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 35. Resources • Google TV • http://www.google.com/tv/ • https://developers.google.com/tv/ • http://googletv.blogspot.it/ • Hardware and community • http://store.sony.com/p/NSZ-GS7/en/p/NSZGS7 • http://www.vizio.com/costar/overview • http://www.gtvhacker.com/ Enlarge your screen Matteo Bonifazi - Stefano Sanna
- 36. Contacts • Matteo Bonifazi • dekra06 AT gmail DOT com • @mbonifazi • Stefano Sanna • gerdavax AT gmail DOT com • @gerdavax • http://www.gerdavax.it • http://www.androidavanzato.it Enlarge your screen Matteo Bonifazi - Stefano Sanna
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