page.title=UI Overview
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<p>A new form factor deserves a new UI model. At a high level, the Android Wear UI consists of two
main spaces centered around the core functions of <strong>Suggest</strong> and
<strong>Demand</strong>. Your application will have an important role to play in both of these
spaces.</p>


<h3 id="Stream">Suggest: The Context Stream</h3>

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  <img class="gif" src="{@docRoot}wear/images/screens/stream.gif">
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<p>The context stream is a vertical list of cards, each showing a useful or timely piece of
information. Much like Google Now on Android phones and tablets, users swipe vertically to navigate
from card to card for a brief and comprehensive update about what's important to them. Only one card
is displayed on screen at a time, and background images are used to provide additional visual
information. Your application can create cards and inject them into the stream when they are most
likely to be useful.</p>

<p>Cards in the stream are more than simple notifications. They can be swiped horizontally to
reveal additional pages. Further horizontal swiping may reveal tappable buttons, allowing the user
to take action on the notification. Cards can also be dismissed by swiping left to right, removing
them from the stream until the next time they have useful information to display.
In the emulator, hovering the mouse over the top of the screen illuminates a blue bar at
the top of the device that takes you home when clicked.</p>


<h3 id="CueCard">Demand: The Cue Card</h3>

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<p>For cases where the context stream can't anticipate what the user would like to do, 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, which can
also be tapped.</p>

<p>The list of actions includes Android intents for voice actions. The upcoming Android Wear SDK
will enable developers to match their applications to these intents so users can perform actions
using these voice commands. Multiple applications may register for a single voice intent, and users
will have the opportunity to choose which application they prefer to use.</p>