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-rw-r--r-- | docs/html/preview/tv/design/index.jd | 65 | ||||
-rw-r--r-- | docs/html/preview/tv/design/patterns.jd | 86 | ||||
-rw-r--r-- | docs/html/preview/tv/design/principles.jd | 33 | ||||
-rw-r--r-- | docs/html/preview/tv/design/style.jd | 101 |
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diff --git a/docs/html/preview/tv/design/images/apps-games-rows.jpg b/docs/html/preview/tv/design/images/apps-games-rows.jpg Binary files differnew file mode 100644 index 0000000..5023655 --- /dev/null +++ b/docs/html/preview/tv/design/images/apps-games-rows.jpg diff --git a/docs/html/preview/tv/design/images/atv-framed-med.png b/docs/html/preview/tv/design/images/atv-framed-med.png Binary files differnew file mode 100644 index 0000000..e06f6e7 --- /dev/null +++ b/docs/html/preview/tv/design/images/atv-framed-med.png diff --git a/docs/html/preview/tv/design/images/atv-home.jpg b/docs/html/preview/tv/design/images/atv-home.jpg Binary files differnew file mode 100644 index 0000000..4b25bab --- /dev/null +++ b/docs/html/preview/tv/design/images/atv-home.jpg diff --git a/docs/html/preview/tv/design/images/focus.png b/docs/html/preview/tv/design/images/focus.png Binary files differnew file mode 100644 index 0000000..df61f4d --- /dev/null +++ b/docs/html/preview/tv/design/images/focus.png diff --git a/docs/html/preview/tv/design/images/icon.png b/docs/html/preview/tv/design/images/icon.png Binary files differnew file mode 100644 index 0000000..ae34e18 --- /dev/null +++ b/docs/html/preview/tv/design/images/icon.png diff --git a/docs/html/preview/tv/design/images/overscan.png b/docs/html/preview/tv/design/images/overscan.png Binary files differnew file mode 100644 index 0000000..fb7e4bc --- /dev/null +++ b/docs/html/preview/tv/design/images/overscan.png diff --git a/docs/html/preview/tv/design/images/recommendations.png b/docs/html/preview/tv/design/images/recommendations.png Binary files differnew file mode 100644 index 0000000..942cd10 --- /dev/null +++ b/docs/html/preview/tv/design/images/recommendations.png diff --git a/docs/html/preview/tv/design/images/search.jpg b/docs/html/preview/tv/design/images/search.jpg Binary files differnew file mode 100644 index 0000000..c034939 --- /dev/null +++ b/docs/html/preview/tv/design/images/search.jpg diff --git a/docs/html/preview/tv/design/images/settings.jpg b/docs/html/preview/tv/design/images/settings.jpg Binary files differnew file mode 100644 index 0000000..1c5bf31 --- /dev/null +++ b/docs/html/preview/tv/design/images/settings.jpg diff --git a/docs/html/preview/tv/design/index.jd b/docs/html/preview/tv/design/index.jd new file mode 100644 index 0000000..b924a5c --- /dev/null +++ b/docs/html/preview/tv/design/index.jd @@ -0,0 +1,65 @@ +page.title=Design for TV +header.justLinks=1 +footer.hide=1 +@jd:body + + +<p>The Android TV platform user interface provides the launch pad for your app's big screen + experience. It's important to understand how your app is presented in the main user interface and + how your app can help users get to the content they want quickly.</p> + + +<h2>Home Screen</h2> + +<p>The Home Screen is the start of the user experience, providing search, content + recommendations, and access to apps and settings. This screen provides a rich and cinematic + overview of apps and content.</p> + +<img src="{@docRoot}preview/tv/design/images/atv-home.jpg" alt="TV Home screen" /> + + +<h2>Search</h2> + +<p>By bringing the power of Google search to the big screen, Android TV makes new, dynamic + connections between content. A favorite movie may lead to the discovery of a new music artist, + planning a trip to Paris might surface new YouTube content and photos.</p> + +<img src="{@docRoot}preview/tv/design/images/search.jpg" alt="Recommendations Row" /> + +<p>To learn more about searching within your app, see + <a href="{@docRoot}preview/tv/ui/in-app-search.html">Searching in TV Apps</a>. + +<h2>Recommendations</h2> + +<p>The recommendations row on Android TV is a central feature of the Home Screen that allows + users quick access to dynamic and relevant content for their media-consumption activities. The + row is optimized for quick browsing of personalized content and activity resumption (on the + device and across devices), while also providing a way for users to act on meaningful new + content.</p> + +<img src="{@docRoot}preview/tv/design/images/recommendations.png" alt="Recommendations Row" /> + +<p> + Recommendations are based on the user’s recent and frequent usage behaviors, as well as + expressed content preferences. They appear as cards that represent a system or app action, + notification, activity, or piece of actionable media. Your app can provide suggestions for the + recommendations row to help get your content noticed. To learn more, see + <a href="{@docRoot}preview/tv/ui/recommendations.html">Recommendations</a>. +</p> + + +<h2>Apps and Games</h2> + +<p>Apps and Games rows both have special areas on the Home Screen. Within their respective + areas, Apps and Games titles are ordered to reflect the user’s recent usage.</p> + +<img src="{@docRoot}preview/tv/design/images/apps-games-rows.jpg" alt="Apps and Games Rows" /> + + +<h2>Settings</h2> + +<p>Access to Settings is found at the bottom of the Home Screen. From here, the user can access + Android and device-specific settings. +</p> + +<img src="{@docRoot}preview/tv/design/images/settings.jpg" alt="Settings Row" /> diff --git a/docs/html/preview/tv/design/patterns.jd b/docs/html/preview/tv/design/patterns.jd new file mode 100644 index 0000000..cdba74c --- /dev/null +++ b/docs/html/preview/tv/design/patterns.jd @@ -0,0 +1,86 @@ +page.title=Patterns for TV +page.tags="design" +@jd:body + +<p>As a developer of apps for TV, you should follow certain patterns to enable users to + quickly understand and operate your app. This section describes recommended design patterns + for TV apps.</p> + +<h2>Navigation, Focus and Selection</h2> + +<p>Users typically navigate TV devices using a directional pad (D-Pad). This type of controller + limits movement to up, down, left, and right. As you design your app for TV, make sure your + user interface has clear paths for two-axis navigation by aligning objects in lists and + grids.</p> + +<img src="{@docRoot}preview/tv/design/images/focus.png" alt="TV navigation and focus diagram" /> + +<p>A key aspect of making your application work well with a D-Pad controller is to make sure + that there is always an object that is obviously in focus. Your app must clearly indicate + what object is focused, so users can easily see what action they can take. Use scale, shadow + brightness, opacity, animation or a combination of these attributes to help users see a focused + object.</p> + + +<h2>Icons</h2> + +<p>Apps on TV devices require some additional icon images for presentation in the system + user interface, including home screen launcher images (banners) and recommendation icons. + The visual specifications for these icons are shown below.</p> + + +<h3>Banners</h3> + +<p>App Banners represent your app on the home screen of TV devices and serve and as a way for + users to launch your app. Here are specific requirements for a banner image: +</p> + +<ul> + <li>Size: 320 x 180 px, xhdpi resource</li> + <li>Text should be included in the image. If your app is available in more than one + language, you must provide versions of the banner image for each supported language.</li> +</ul> + + +<h3>Recommendation Icons</h3> + +<p>Recommendation cards include a small icon that is imposed over a colored background. + An example and specifications for the this icon are shown below:</p> + +<img src="{@docRoot}preview/tv/design/images/icon.png" alt="Recommendation icon examples" /> + +<p>Here are the requirements for recommendation icons:</p> + +<ul> + <li>Monocolor: size 16x16dp, white (#fff) icon with transparent background, PNG format</li> + <li>Graphics should be centered within the icon image</li> +</ul> + +<p class="note"> + <strong>Note:</strong> Your app icon image may be desaturated and blended for some card + displays. +</p> + + +<h2>Background Images</h2> + +<p>Background images are displayed in the background of your app to provide additional visual + interest, information, or branding. The BrowseFragment and DetailsFragment classes in the Leanback + support library provide specific support for background images and for updating them as items gain + and lose focus. Here are the specific requirements for background images:</p> + +<ul> + <li>Full color, 1920 x 1080 pixels</li> +</ul> + +<p class="note"> + <strong>Note:</strong> If the image does not meet this requirement, it is scaled to fit. +</p> + +<h2>Audio Feedback</h2> + +<p>Sounds on Android TV bring a cinematic quality to the interaction experience. You should + consider adding sounds for user actions or to provide feedback when a user is only partially + visually engaged with the screen (e.g., because they are distracted or multitasking). + You should also consider using sounds as alternatives to visual messages, for example to indicate + that a user has reached the end of a list or is trying to navigate to an undefined location.</p> diff --git a/docs/html/preview/tv/design/principles.jd b/docs/html/preview/tv/design/principles.jd new file mode 100644 index 0000000..106fa96 --- /dev/null +++ b/docs/html/preview/tv/design/principles.jd @@ -0,0 +1,33 @@ +page.title=Creative Vision for TV +@jd:body + +<p>Users bring a specific set of expectations when watching TV, versus + interacting with a phone or tablet. These guidelines have been developed by the Android User + Experience Team to guide creation of the Android TV platform and the apps that run on it.</p> + +<h2>Casual Consumption</h2> + +<p>The TV is an entertainment interface, not a computer or mobile device. Optimize for + activities that put content at the center: from the casual posture of movie-watching, to + immersive gameplay, to hanging out with friends in a living room.</p> + +<p>Users expect immediate access to content when they turn on a TV. Get users into the action + fast, be it the big game, their favorite show, or a game with friends. The next piece of content + to watch or play should only be a click or two away.</p> + + +<h2>Cinematic Experience</h2> + +<p>Create immersive experiences for the user. Design for as little user interface and as much + content as possible on each screen. Use visual imagery, movement, and sound to inform and delight + users. Avoid using on-screen text to convey information and purpose. Tell your story with pictures + and sound.</p> + + +<h2>Simplicity</h2> + +<p>Android TV is simple and magical. It’s all about finding and enjoying content and + apps with the least amount of friction. Minimize the number of navigation steps required to + perform actions. Build apps with the fewest screens possible between app entry and content + immersion. Avoid making users enter text whenever possible, and use voice interfaces when you + require text input.</p> diff --git a/docs/html/preview/tv/design/style.jd b/docs/html/preview/tv/design/style.jd new file mode 100644 index 0000000..67a7096 --- /dev/null +++ b/docs/html/preview/tv/design/style.jd @@ -0,0 +1,101 @@ +page.title=Style for TV +page.tags="design" +@jd:body + + +<p>Follow these style guidelines to create beautiful, functional apps for TV.</p> + + +<h2>Layouts</h2> + +<p>The difference between a TV experience that feels right and one that does not greatly depends + on the number, spacing, and size of on-screen elements. Although TV sizes and resolutions have + steadily increased over time, users expect TV experiences to be relatively simple and + uncluttered.</p> + +<p>The additional resolution and screen area afforded by modern displays is best used to display + things at better quality, rather than greater quantity. For example, use your layouts to show + large, beautiful pieces of content, or to resize type for both easy reading and generous spacing. +</p> + +<p>If you are creating an app for browsing and playing content, use the prebuilt fragments in the + Leanback support library. These layouts have been built specifically for use on TV devices with + the guidance of the Android User Experience team. For more information on using these classes, + see the <a href="{@docRoot}preview/tv/build-ui/index.html">User Interfaces</a> guide. +</p> + +<p>Here are some additional recommendations for creating functional and attractive layouts for TV + apps:</p> + +<ul> + <li>Design layouts for landscape orientation. TV screens always use this + orientation.</li> + <li>Design your artwork assets for best viewing at HD resolution (1920 x 1080 pixels).</li> + <li>Put on-screen navigational controls on the left or right side of the screen, and + save the vertical space for content.</li> + <li>Use Fragments to create UIs that are divided into sections, and use view groups + like GridView instead of ListView to make better use of the horizontal screen space.</li> + <li>Avoid a cluttered interface by adding sufficient margins between layout controls.</li> +</ul> + + +<h3>Overscan</h3> + +<p>During the evolution of TV technology, overscan originally described an area of TV content + outside of a safe zone that most TVs could reliably display. Even on some of today’s HDTV flat + screens, areas outside that zone may not be visible.</p> + +<img src="{@docRoot}preview/tv/design/images/overscan.png" alt="Overscan borders for TV" /> + +<p>Build a 10% margin into your TV screen designs to account for overscan area the TV may not + display correctly. On a 1920 x 1080 pixel screen, this margin should be a minimum of 27px from the + top and bottom edges and a minimum of 48px from the right and left edges of the picture.</p> + + +<h2>Color</h2> + +<p>Color rendering on televisions can be imprecise compared to computer monitors or mobile + devices. LCD and Plasma TVs often apply smoothing and sharpening filters, and color rendering may + not match what you see on a computer screen.</p> + +<p>Subtle hue or brightness differences between elements may disappear or be over-emphasized on + TV screens. Some color gradient combinations will show bands. You should avoid pure whites on + large areas of the screen. For highly saturated colors (especially reds, greens and blues) you + should review them when used to fill significant areas of the screen. You + should also avoid using very dark or muddy colors, as TV settings may display these colors with + exaggerated contrast, causing them to be indistinguishable.</p> + + +<h2>Typography</h2> + +<p>The text and controls in a TV application's UI should be easily visible and navigable from a + distance. The minimum recommended font size for TV is 12sp. The default text size setting should + be 18sp. We recommend the following guidelines for TV apps:</p> + +<ul> + <li><strong>Card Titles:</strong> Roboto Condensed 16sp</li> + <li><strong>Card Subtext:</strong> Roboto Condensed 12sp</li> + <li><strong>Browse Screen Title:</strong> Roboto Regular 44sp</li> + <li><strong>Browse Category Title:</strong> Roboto Condensed 20sp</li> + <li><strong>Details Content Titles:</strong> Roboto Regular 34sp</li> + <li><strong>Details Subtext:</strong> Roboto Regular 14sp</li> +</ul> + +<p>Some TVs have strong sharpness and contrast settings as their defaults. These picture + settings make thin and light typefaces look jagged and make the text difficult for people to read. + Therefore you should avoid thin or light typefaces on TV.</p> + +<h2>Text</h2> + +<p>Use text in TV apps sparingly. The position of users relative to a TV screen + (typically about 10 feet away) makes it harder for users to read text. Users also don't expect to + read much in a TV environment. Follow these tips for the best handling of text in your app:</p> + +<ul> + <li>Break text into small chunks that users can quickly scan.</li> + <li>Use light text on a dark background. This style is easier to read on a TV.</li> + <li>Avoid lightweight fonts or fonts that have both very narrow and very broad + strokes. Use simple sans-serif fonts and anti-aliasing to increase readability.</li> + <li>Use layout-relative sizing rather than absolute sizing, and density-independent + pixel units instead of absolute pixel units.</li> +</ul> |