221 lines
8.4 KiB
HTML
221 lines
8.4 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<title>
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Android Design - Touch Feedback
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</title>
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<body>
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<div id="page-container">
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<div id="page-header"><a href="../index.html">Android Design</a></div>
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<div class="nav-section-header"><a href="../index.html">Get Started</a></div>
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<ul>
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<li><a href="../get-started/creative-vision.html">Creative Vision</a></li>
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<li><a href="../get-started/principles.html">Design Principles</a></li>
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<li><a href="../get-started/ui-overview.html">UI Overview</a></li>
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<li><a href="../style/themes.html">Themes</a></li>
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<li><a href="../style/touch-feedback.html">Touch Feedback</a></li>
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<li><a href="../style/metrics-grids.html">Metrics and Grids</a></li>
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<li><a href="../style/typography.html">Typography</a></li>
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<div class="nav-section-header"><a href="../patterns/index.html">Patterns</a></div>
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<ul>
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<li><a href="../patterns/new-4-0.html">New in Android 4.0</a></li>
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<li><a href="../patterns/gestures.html">Gestures</a></li>
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<div class="layout-content-row content-header">
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<div class="layout-content-col span-9">
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<h2>Touch Feedback</h2>
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</div>
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<div class="paging-links layout-content-col span-4">
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<a href="#" class="prev-page-link">Previous</a>
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<a href="#" class="next-page-link">Next</a>
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</div>
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</div>
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<div class="layout-content-row" style="margin-bottom: -100px">
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<div class="layout-content-col span-7">
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<p>Use color and illumination to respond to touches, reinforce the resulting behaviors of gestures, and
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indicate what actions are enabled and disabled.</p>
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<p>Whenever a user touches an actionable area in your app, provide a visual response. This lets the
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user know which object was touched and that your app is "listening".</p>
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</div>
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<div class="layout-content-col span-6">
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<img src="../static/content/touch_feedback_reaction_response.png">
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</div>
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</div>
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<h4>States</h4>
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<div class="vspace size-1"> </div>
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<img src="../static/content/touch_feedback_states.png">
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<div class="figure-caption">
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Most of Android's UI elements have touch-feedback built in, including states that indicate
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whether touching the element will have any effect.
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</div>
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<div class="vspace size-4"> </div>
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<div class="layout-content-row">
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<div class="layout-content-col span-4">
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<h4>Communication</h4>
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<p>When your objects react to more complex gestures, help users understand what the outcome of the
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operation will be. For example, in Recents, when you start swiping a thumbnail left or right, it
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starts to dim. This helps the user understand that swiping will cause the item to be removed.</p>
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</div>
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<div class="layout-content-col span-9">
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<img src="../static/content/touch_feedback_manipulation.png">
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</div>
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</div>
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<div class="layout-content-row">
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<div class="layout-content-col span-6">
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<img src="../static/content/touch_feedback_communication.png">
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</div>
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<div class="layout-content-col span-6">
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<div class="vspace size-3"> </div>
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<h4>Boundaries</h4>
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<p>When users try to scroll past the upper or lower limit of a scrollable area, communicate the
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boundary with a visual cue. For example, if a user attempts to scroll past the first home screen
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panel, the screen content tilts to the right to indicate that further navigation in this direction
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is not possible. Many of Android's scrollable UI widgets (e.g. lists or grid lists) already have
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support for boundary feedback built in. If you are building custom, keep boundary feedback in mind
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and provide it from within your app.</p>
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</div>
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</div>
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<div class="layout-content-row content-footer">
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<div class="paging-links layout-content-col span-9"> </div>
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<a href="#" class="prev-page-link">Previous</a>
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<p id="copyright">
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Except as noted, this content is licensed under
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<a href="http://creativecommons.org/licenses/by/2.5/">
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Creative Commons Attribution 2.5</a>.<br>
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For details and restrictions, see the
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<a href="http://developer.android.com/license.html">Content License</a>.
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</p>
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