docs: studio 1.3 private resources

      <li><a href="#project-settings">Android Studio and Project Settings</a></li>

      <li><a href="#finger-print">Fingerprint Support</a></li>

      <li><a href="#dev-services">Developer Services</a></li>

      <li><a href="#private-res">Public and Private Resources</a></li>

      <li><a href="#support-apis">Editor Support for the Latest Android APIs</a></li>

      <li><a href="#test-module">Test APK Module</a></li>

    </ol>

<h2 id="trans-editor">Translations Editor</h2>

<p>Multi-language support is enhanced with the Translations Editor plugin so you can easily add

a variety of locales to the app's translation file. With

<a href="https://tools.ietf.org/html/bcp47">BCP 47</a> support, the editor combines language and

<a class="external-link" href="https://tools.ietf.org/html/bcp47">BCP 47</a> support, the editor

combines language and

region codes into a single selection for targeted localizations. Color codes indicate whether a

locale is complete or still missing string translations. </p>

<h2 id="private-res">Public and Private Resources</h2>

<p>By default, Android Studio treats all library resources as public: A public library resource is

available to library clients for use outside the library, and appears in code completion suggestions

and other resource references. Android Studio also, however, supports the use of private library

resources. A private library resource can only be used within the source library, and does not

appear in code completion lists and other resource references. </p>

<p>You cannot explicitly declare a library resource as private. Instead, if you declare any library

resources as public, Android Studio assumes all the other library resources are private. </p>

<p>An app treats all Android library resources as public unless you explicitly declare at least one

resource in the library as public. Declaring one public resource causes your app to treat all other,

undeclared resources in the library as private. </p>

<p class="note"><strong>Note:</strong> Declaring public and private resources requires the

<a href="{@docRoot}tools/building/plugin-for-gradle.html">Android Plugin for Gradle</a> version

1.3 or higher. </p>

<p>To declare a resource as public and set other undeclared resources as private, add a

<code>&lt;public&gt;</code> declaration with the resource name and type in the resource file.

This example shows the public declaration for the <code>mylib_app_name</code> string resource. </p>

<pre>

<resources>

    <public name="mylib_app_name" type="string"/>

</resources>

</pre>

<p>For large numbers of declarations, we recommended that you place the public marker declarations

in a separate file named <code>public.xml</code>. </p>

<p>To help enforce private resource access, a <a href="{@docRoot}tools/help/lint.html">lint</a>

warning appears when a client of a library references a private resource. Many Android libraries,

such as the

<a href="{@docRoot}tools/support-library/features.html#design">Design Support Library</a> and the

<a href="{@docRoot}tools/support-library/features.html#v7-appcompat">v7 appcompat Library</a>,

declare public resources to display only resources that developers can directly reference.

</p>

<p class="note"><strong>Note:</strong> If your app requires a private resource, copy the

private resource from the library to the location in your app where it is needed. </p>

<p>When the build system builds an Android Archive (AAR) file, it extracts the

<code>&lt;public&gt;</code> resource declarations into a <code>public.txt</code> file, which is

packaged inside the AAR file next to the <code>R.txt</code> file. The <code>public.txt</code> file

contains a simple list of the declared public resources, describing their names and types. </p>

<p>For a complete list of the available Android resource types, see

<a href="http://developer.android.com/guide/topics/resources/available-resources.html">Resource

Types</a></li> and

<a href="http://developer.android.com/guide/topics/resources/more-resources.html">More Resource

Types</a></li>. </p>

<h2 id="support-apis">Editor Support for the Latest Android APIs</h2>

<p>Android Studio supports the

app's <code>build.gradle</code> file. </p>