android_frameworks_base/docs/html/design/style/iconography.jd

page.title=Iconography
@jd:body

<img src="{@docRoot}design/media/iconography_overview.png">

<p>An icon is a graphic that takes up a small portion of screen real estate and provides a quick,
intuitive representation of an action, a status, or an app.</p>



<h2 id="launcher">Launcher</h2>

<p>The launcher icon is the visual representation of your app on the Home or All Apps screen. Since the
user can change the Home screen's wallpaper, make sure that your launcher icon is clearly visible on
any type of background.</p>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_launcher_size.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_launcher_focal.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_launcher_style.png">

  </div>
</div>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <h4>Sizes &amp; scale</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Launcher icons on a mobile device must be <strong>48x48 <acronym title="Density-independent pixels. One dp is one pixel on a 160 dpi screen.">dp</acronym></strong>.</p></li>
      <li class="no-bullet with-icon web">
        <p>Launcher icons for display on Google Play must be <strong>512x512 pixels</strong>.</p></li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

    <h4>Proportions</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Full asset, <strong>48x48 dp</strong></p>
      </li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

<h4>Style</h4>
<p>Use a distinct silhouette. Three-dimensional, front view, with a slight perspective as if viewed
from above, so that users perceive some depth.</p>

  </div>
</div>


<div class="layout-content-row">
  <div class="layout-content-col span-4">
    &nbsp;
  </div>
  <div class="layout-content-col span-7">

    <img src="{@docRoot}design/media/iconography_launcher_example.png">

  </div>
  <!-- 2 free columns -->
</div>

<div class="layout-content-row">
  <div class="layout-content-col span-12">

    <img src="{@docRoot}design/media/iconography_launcher_example2.png">

    <div class="vspace size-2">&nbsp;</div>

  </div>
  <!-- 1 free columns -->
</div>


<h2 id="action-bar">Action Bar</h2>

<p>

Action bar icons are graphic buttons that represent the most important actions people can take
within your app. Each one should employ a simple metaphor representing a single concept that most
people can grasp at a glance.

</p>
<p>

Pre-defined glyphs should be used for certain common actions such as "refresh" and "share." The
download link below provides a package with icons that are scaled for various screen densities and
are suitable for use with the Holo Light and Holo Dark themes. The package also includes unstyled
icons that you can modify to match your theme, in addition to Adobe&reg; Illustrator&reg; source
files for further customization.

</p>
<p>
<a onClick="_gaq.push(['_trackEvent', 'Design', 'Download', 'Action Bar Icons (@iconography page)']);"
   href="{@docRoot}downloads/design/Android_Design_Icons_20120814.zip">Download the Action Bar Icon Pack</a>
</p>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_actionbar_size.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_actionbar_focal.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_actionbar_style.png">

  </div>
</div>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <h4>Sizes &amp; scale</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Action bar icons for phones should be <strong>32x32 <acronym title="Density-independent pixels. One dp is one pixel on a 160 dpi screen.">dp</acronym></strong>.</p></li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

    <h4>Focal area &amp; proportions</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Full asset, <strong>32x32 dp</strong></p>
        <p>Optical square, <strong>24x24 dp</strong></p>
      </li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

<h4>Style</h4>
<p>Pictographic, flat, not too detailed, with smooth curves or sharp shapes. If the graphic is thin,
rotate it 45&deg; left or right to fill the focal space. The thickness of the strokes and negative
spaces should be a minimum of 2 dp.</p>

  </div>
</div>


<div class="layout-content-row">
  <div class="layout-content-col span-3">

<h4>Colors</h4>
<p>Colors: <strong>#333333</strong><br />
Enabled: <strong>60%</strong> opacity<br />
Disabled: <strong>30%</strong> opacity</p>
<div class="vspace size-1">&nbsp;</div>

<p>Colors: <strong>#FFFFFF</strong><br />
Enabled: <strong>80%</strong> opacity<br />
Disabled: <strong>30%</strong> opacity</p>

  </div>
  <div class="layout-content-col span-9">

    <img src="{@docRoot}design/media/iconography_actionbar_colors.png">

  </div>
</div>


<h2 id="small-contextual">Small / Contextual Icons</h2>

<p>Within the body of your app, use small icons to surface actions and/or provide status for specific
items. For example, in the Gmail app, each message has a star icon that marks the message as
important.</p>


<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_small_size.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_small_focal.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_small_style.png">

  </div>
</div>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <h4>Sizes &amp; scale</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Small icons should be <strong>16x16 <acronym title="Density-independent pixels. One dp is one pixel on a 160 dpi screen.">dp</acronym></strong>.</p></li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

    <h4>Focal area &amp; proportions</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Full asset, <strong>16x16 dp</strong></p>
        <p>Optical square, <strong>12x12 dp</strong></p>
      </li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

<h4>Style</h4>
<p>Neutral, flat, and simple. Filled shapes are easier to see than thin strokes. Use a single visual
metaphor so that a user can easily recognize and understand its purpose.</p>

  </div>
</div>


<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_small_colors.png">

    <div class="vspace size-2">&nbsp;</div>

<h4>Colors</h4>
<p>Use non-neutral colors sparingly and with purpose. For example, Gmail uses yellow in the star icon
to indicate a bookmarked message. If an icon is actionable, choose a color that contrasts well with
the background.</p>

  </div>
  <div class="layout-content-col span-7">

    <img src="{@docRoot}design/media/iconography_small_example.png">

  </div>
  <!-- 2 free columns -->
</div>


<h2 id="notification">Notification Icons</h2>

<p>If your app generates notifications, provide an icon that the system can display in the status bar
whenever a new notification is available.</p>


<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_notification_size.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_notification_focal.png">

  </div>
  <div class="layout-content-col span-4">

    <img src="{@docRoot}design/media/iconography_notification_style.png">

  </div>
</div>

<div class="layout-content-row">
  <div class="layout-content-col span-4">

    <h4>Sizes &amp; scale</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Notification icons must be <strong>24x24 <acronym title="Density-independent pixels. One dp is one pixel on a 160 dpi screen.">dp</acronym></strong>.</p></li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

    <h4>Focal area &amp; proportions</h4>

    <ul>
      <li class="no-bullet with-icon tablet">
        <p>Full asset, <strong>24x24 dp</strong></p>
        <p>Optical square, <strong>22x22 dp</strong></p>
      </li>
    </ul>

  </div>
  <div class="layout-content-col span-4">

<h4>Style</h4>
<p>Keep the style flat and simple, using the same single, visual metaphor as your launcher icon.</p>

  </div>
</div>


<div class="layout-content-row">
  <div class="layout-content-col span-4">

<h4>Colors</h4>
<p>Notification icons must be entirely white. Also, the system may scale down and/or darken the icons.</p>

  </div>
  <div class="layout-content-col span-7">

    <img src="{@docRoot}design/media/iconography_notification_example.png">

  </div>
  <!-- 2 free columns -->
</div>