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    • Game On! 游戏开发系列 - 031
      • Pie Noon - 1503060393
      • The Death of Base Game Activity - 1504030543
      • Surviving OpenGL Context Loss - 1504030546
      • WebP for Game Devs - 1504030547
      • Saved Games In-Depth (Part 1) - 1504070556
      • Saved Games In-Depth (Part 2) - 1504030548
      • Smaller Flipbook Textures with CRABBY - 1504030544
      • Google Tag Manager - 1504030545
      • Flatbuffers - 1505050794
      • Achievement Point Pointers - 1505050796
      • Frequency Scaling - 1505050797
      • Meet the Management APIs - 1501140367
      • Y U Ship Broken Games - 1505050795
    • Android 性能优化 - 088
      • Garbage Collection in Android - 1503170425
      • Performance Cost of Memory Leaks - 1503170424
      • Rendering Performance 101 - 1501130351
      • Understanding Overdraw - 1501130352
      • Understanding VSYNC - 1501130353
      • Tool - Profile GPU Rendering - 1501130354
      • Why 60fps? - 1501130355
      • Android UI and the GPU - 1501130356
      • Invalidations, Layouts, and Performance - 1501130357
      • Overdraw, Cliprect, QuickReject - 1501130358
      • Tool - Memory Monitor - 1501130363
      • Battery Performance 101 - 1501130364
      • Understanding Battery Drain on Android - 1501130365
      • Battery Drain and WakeLocks - 1501130366
      • Memory Performance 101 - 1504170661
    • I/O 2014 Android 开发专题 - 089
      • Activity Transitions - 1504020505
      • Building Apps For Android TV - 1504020520
      • Building great Android media experiences - 1504020510
      • Building a quality app from start to finish - 1504020515
      • App Indexing API - 1504020507
      • What's new in WebView - 1504010484
      • Bluetooth Low Energy - 1504010486
      • Building impressive Android media experiences - 1504010493
      • The next Generation of Authentication - 1504020497
      • Don't Alpha That Pixel! - 1504020523
      • NFC + HCE Your phone in an interactive world - 1504020509
      • Demystifying encodes and decodes of WebM - 1504020521
      • Google Cloud Messaging - 1504020524
      • Getting your Game on the Big Screen - 1504020518
      • I hear you like realtime memes - 1504020511
      • Offerize your App - 1504020506
      • Using the Android Job Scheduler - 1504020504
      • From Holo to Material - 1504020526
      • Under the Hood of Android Auto - 1504020501
      • Isolation for Android App Developers - 1504020498
      • Android Work - 1504010496
      • ExoPlayer: Adaptive video streaming on Android - 1504010489
      • Sample rates and resampling: Why can't we all just agree? - 1504010488
      • Drive Android API - 1504010485
    • Android Studio - 004
      • Layout Editor (Ep 3, Android Studio) - 1503290479
      • Introducing Gradle (Ep 2, Android Studio) - 1503170426
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      • Introduction to Google Play - 1504030534
      • Google Play: building your user community - 1504030535
      • Optimizing Apps for Education - 1504030536
      • Succeeding in Education Technology - 1504030530
      • Subscriptions Made Easy with Google Play - 1504030531
      • The world is your playground - go global with Google - 1504030533
      • Maximizing discoverability on Google Play - 1504030538
    • Android Auto - 003
      • Introduction to Android Auto - 1504130615
      • Android Auto Messaging - 1504130617
      • Android Auto Audio - 1504130616
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      • Designing for Android Wear - 1503210448
      • How We Customized Google Apps for Android Wear - 1503210450
      • Fullscreen apps for Android Wear - 1503210445
      • New Notification Features for Android Wear - 1503210446
      • Building Cloud-powered wearable Apps - 1503210449
      • An Introduction to Android Wear - 1503190435
      • Google I/O 2014 - Android Wear: The developer's perspective - 1503210442
      • Devoxx 2014 Interviews: Android Wear - 1503210440
      • DevBytes: Watch Faces for Android Wear - 1503210439
    • Android TV - 005
      • Using the Leanback library - 1504080588
      • Beach Buggy Racing Multiplayer with Nearby Connections (Play Services) - 1503060387
    • Android for Work - 106
      • Android for Work for Developers - 1503060390
      • App Configurations, Testing and Launchers - 1504110590
    • IO Bytes 2014 - Android - 066
      • Chrome Apps on Android and iOS - 1501080014
      • Perf Primer CPU, GPU and your Android game - 1501080017
  • Chrome 平台
    • IO Bytes 2014 - Chrome and Web - 067
      • Using the PageSpeed API - 1505070815
      • Fabulous Forms for the multi-device web - 1505070816
      • Testing multi-screen web pages - 1505070817
      • Responsive images today - 1505070819
      • Web Performance Testing at YouTube - 1505070828
      • Building sites for the multi-device web - 1505070820
      • Deep dive: Google Cloud Messaging for Chrome - 1505070827
  • Google 创业者资源
    • Coffee with a Googler - 012
      • Chat with Allen Huang of AndroidTV - 1503040384
      • Chat with Fred Chung about developer advocacy - 1503070395
      • Google Fit platform with Michelle Haq - 1503210443
      • Android Auto Product Manager Andrew Brenner - 1501120027
      • Chat with Francis Ma about Google Play services - 1501120028
    • Root Access For Startups - 077
      • What we learned building plug-ins for Android, with startup Magnet - 1503230453
      • How to use crowdfunding to your advantage, with startup Hale Devices - 1503280462
      • How to overcome customer objections when selling tech, with startup Guesswork - 1503280458
    • First Things First - 029
      • Getting started with Android: A crash-course in developing for Android - 1504120601
      • How to ask a question: conducting research for your startup - 1504120603
      • MVP Design Hacks: transform your hot idea into a validated prototype - 1504120602
      • Build something people want: Solving real problems - 1504120605
    • How I - 061
      • Use BigQuery to find my most valuable customers - 1504070573
      • Manage beta testing communities using Google Play - 1504070572
      • Use paper wireframing to build native prototypes - 1504070570
      • Used social media and $0 marketing to get 68 million users - 1504070568
      • Prep to fundraise with four questions - 1504070564
      • Validated my idea in 2 days (with no code) - 1504070562
      • Build open platforms on Android - 1504120596
      • Get cheap, automatic analytics for my business using BigQuery - 1504070571
      • Write press releases to get international media coverage - 1504070569
      • Test beta-product features using Google Apps - 1504070563
      • Use URL builder to measure ROI on social media - 1504070561
      • Use events to build DeadSocial's brand - 1504070557
      • Use BigQuery to visualize streaming data - 1503220452
      • Find, screen, and hire developers - 1503120406
      • Drive engagement with social challenges - 1504070558
  • 设计
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      • Paper and Ink: The Materials that Matter - 1505050793
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    • DevBytes: Google Cloud Platform - 021
      • Powering the next killer app with the Google Cloud Platform - 1504210672
      • Introduction to Google Cloud Endpoints - 1504210675
      • The Beauty of Scale with Google Cloud Platform - 1504210678
    • Google Cloud Platform - Big Data - 105
      • GDELT & BigQuery: Understand the world - 1502200379
    • Uncategorized - 999
      • Introducing Google Cloud Platform Resources - 1501190370
  • Google 应用开发
    • Launchpad Online - 072
      • The Setup: Creating new apps using Google APIs - 1503190428
      • Listing your files in Google Drive - 1503190429
      • Customizing Google Analytics for your startup - 1503290473
      • The Launchpad Online series - 1503190427
      • Getting started with Google Analytics - 1503290472
      • Accessing Google Maps from a spreadsheet?!? - 1502220381
      • Change the world in 10 lines of code - 1503080398
    • Google Play Services - 054
      • Google Play services 6.1 - 1503290481
      • Google Play Services 7.0 - 1503200437
      • Google Play Services 6.5 - 1501080015
    • 谷歌地图 iOS SDK - 053
      • Maps Live: New Features in the Google Maps Mobile APIs for Android and iOS - 1504300777
    • Google 移动搜索开发 - 055
      • Is your app in the Google index? - 1504120598
      • Get more engaged users with Google Search for Developers - 1503070397
    • DevBytes: Google Cast - 020
      • Google Cast SDK for Android - 1504180666
      • Media Router Framework - Part 1 - Media Router API - 1504180667
      • Overview for Google Cast Receivers - 1504180664
      • Google Cast SDK for iOS - 1504180663
    • Getting Started with the Google Maps SDK for iOS - 035
      • Getting started with the Google Maps SDK for iOS, Part 1 - 1504270757
    • IO Bytes 2014 - Wearables - 070
      • Voice Driven GDK Glassware - 1505280836
    • Route 85 - 078
      • Introducing Route 85 - 1501120022
      • Quick Tip: Don't Default that Switch! - 1501190371
      • OpenInChrome on iOS, Part 1 - 1501120023
      • OpenInChrome on iOS, Part 2 - 1501120024
      • OpenInChrome on iOS, Part 3 - 1501120025
      • OpenInChrome on iOS, Part 4 - 1501120026
    • DevBytes 2014 - 019
      • Web Components - Template - 1505040789
      • Wearable DataLayer API - 1505050792
      • Using srcset for responsive images - 1505050790
      • The picture element for art direction - 1505050791
    • Uncategorized - 999
      • Sun Surveyor brings augmented reality to photographers using Google Maps APIs - 1504200668
      • Snappy travels with the Roads API - 1503060392
      • Easy Maps Apps in Java and Python - 1501140030
  • Google 广告平台
  • Polymer
    • Polycasts - 076
      • The Awesome Power of Auto-Binding Templates -- Polycasts #08 - 1502220382
      • Content Switcheroo with Core-Pages -- Polycasts #09 - 1502200380
      • Core Iconset -- Polycasts #02 - 1505040788
  • Web 平台
    • HTTP 203 - 062
      • Gotchas - 1501140368
      • Font Rendering - 1501080016
    • Web Components - 081
      • DevBytes: Web Components - Overview - 1504250709
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  • Google 各类开发者会议
    • 2014 Chrome 开发者高峰会议 - 009
      • Keynote - Chrome Dev Summit 2014 (Darin Fisher) - 1503120407
      • TLS All the Things! - Security with Performance(Chris Palmer) - 1503140412
      • Let’s build some apps with Polymer!(Rob Dodson) - 1503150415
      • Day One Closing Remarks(Sundar Pichai) - 1503150417
      • Chrome Leadership panel - 1503160422
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      • FlatBuffers - 1504150640
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  • 解说词中文版：

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  1. Android 平台
  2. I/O 2014 Android 开发专题 - 089

Building Apps For Android TV - 1504020520

PreviousActivity Transitions - 1504020505NextBuilding great Android media experiences - 1504020510

Last updated 5 years ago

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视频发布时间

2014年6月25日

视频介绍

Tim Kilbourn gives us an overview of building apps for Android TV with the new Leanback support library.

视频推介语

暂无，待补充。

译者信息

翻译

润稿

终审

原始链接

中文字幕

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苏楚霖

wang7x

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1504020520

解说词中文版：

大家好 我是Tim Kilbourn

来自Android Framework Team

今天我想聊聊如何开发Android电视的应用

Android电视的应用也使用

Android框架里的组件和工具开发

如果你已经开发过手机或者平板的app

那你的经验也适用于开发电视应用

但是 相对于开发手机 平板应用

开发电视应用有些独特之处

特别是电视的成像像素

比手机或者平板要低得多

没有人愿意在电视上看一堆文本

而且 我们跟电视是通过方向键交互

例如远程遥控或者游戏手柄 而不是触摸

因此确保app里所有重要的元素都是可光标定位的(focus-able)

看看这个为Android电视开发的app的例子

这个app使用尽量少的文本内容

可以通过方向键到达任何内容

使用面板来导航也非常方便

事实上 对于电视的app来说 这种浏览方式是非常普遍的

因此我们创建了一个新的类库

帮助你给大屏幕应用创建更漂亮更易用的app

通过使用Leanback类库的插件和元素

你将能迅速的创建出

更适合电视的app

这个Leanback类库是基于

Model-View-Presenter(MVP)模式的

使用它可以很方便的

将内容的展示方式和存储数据的model对象

隔离开来

model对象抽象于你的app

框架对它没有任何限制

这样不用更改model对象就可以升级一个已有的app

使其能运行在电视上

Views是你已经了解了的不能再爱的Android标准视图

像文本视图 图片视图等等

我们在这个类库里给Android带来的新东西就是Presenter

只要给Presenter一个model对象

它就能将对象里的数据跟View绑定在一起

这样类库的代码就可以用来在你app

里的所有页面显示东西了

特别是相同的项目可以以不同的方式

app里的不同位置来呈现

而这些只需要简单的替换Presenter就可以了

让我们看些例子

这个屏幕页面可以让用户在

内容分类里浏览

这是使用Leanback类库的browse fragment

来实现的

在fragment被初始化时 只需要提供一个适配器对象

里面包含了model对象和

渲染model对象的Presenter

fragment里的类库代码会解决剩余的事情

调用这些方法 那么每个组件的

presenter会逐行显示其内容

接下来 类库还提供一个详情屏幕页面

同一个对象模型

之前是用小卡片视图显示

现在却可以通过使用不同的Presenter

来展示更多的细节

我们也能看到在详情总览下面

有几行关联内容

这些也都是Presenters实现的

app内部搜索也是这样实现的

你的app会接收到用户输入的

搜索关键词 然后搜索引擎使用

对象适配器和你指定用来

展示结果的Presenters来实现

还有其他东西能让你的app

在电视上表现更加完美

我们设计了新的加载器

针对需要尽快展示的内容

进行了优化

它从内容推荐开始

使用现有的Android notifications API

你的app就可以推送用户接下来想看的

视频或者其他内容

你定义好文本和卡片式图片数据

启动器会在主页面显眼位置

展示推荐内容

用户对推荐内容的响应

将决定推荐内容的展示顺序

因此确保你正在开发一款高质量的app

让用户愿意继续使用你的app

大家可以在Android电视的开发网站上

找到关于Presenters Fragments 和 Content Recommendations

更多的细节和代码

谢谢观看

试试开发你自己的Android电视app吧

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