Commit fe7b93f

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<h2>This lesson teaches you to</h2>

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<h2>Try it out</h2>

<a href="http://developer.android.com/shareables/training/NewsReader.zip" class="button">Download

the sample app</a>

<p>This lesson shows you how to support different screen densities

by providing different resources and using resolution-independent units of

absolute pixels to define distances or sizes. Defining layout dimensions with

pixels is a problem because different screens have different pixel densities,

so the same number of pixels may correspond to different physical sizes on

<code>dp</code> or <code>sp</code> units. A <code>dp</code> is a density-independent pixel

that corresponds to the physical size of a pixel at 160 dpi. An <code>sp</code> is the same

base unit, but is scaled by the user's preferred text size (it’s a

scale-independent pixel), so you should use this measurement unit when defining

text size (but never for layout sizes).</p>

rather than <code>px</code>:</p>

<pre>

android:text="&#64;string/clickme"

android:layout_marginTop="20dp" /&gt;

</pre>

<p>When specifying text size, always use <code>sp</code>:</p>

<pre>

android:textSize="20sp" /&gt;

</pre>

<li><a href="{@docRoot}design/tv/index.html">

Design for TV</a></li>

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<p>

Browsing and playing media files is frequently part of the user experience provided by a TV app.