page.title=Adding Platforms and Packages

@jd:body


<p>The Android SDK separates tools, platforms, and other components into packages you can
  download using the Android SDK Manager. The original
SDK package you've downloaded includes only the SDK Tools. To develop an Android app,
you also need to download at least one Android platform and the latest SDK Platform-tools.</p>

<ol>
<li>Launch the SDK Manager.
<p>If you've used the Windows installer to install the SDK tools, you should already have the
Android SDK Manager open. Otherwise, you can launch the Android SDK Manager in one of the following
ways:</p>
<ul>
  <li>On Windows, double-click the <code>SDK Manager.exe</code> file at the root of the Android
SDK directory.</li>
  <li>On Mac or Linux, open a terminal and navigate to the <code>tools/</code> directory in the
Android SDK, then execute <code>android sdk</code>.</li>
</ul>
</li>

<li>When the Android SDK Manager opens, it automatically selects a set of recommended packages,
as shown in figure 1.
Simply click <strong>Install</strong> to install the recommended packages. The Android SDK Manager
installs the selected packages into
your Android SDK environment.</li>
</ol>

<p>If you install the recommended packages, you're now ready to start developing apps!
To start developing, read <a href="{@docRoot}training/basics/firstapp/index.html"
>Building Your First App</a>.</p>

<img src="/images/sdk_manager_packages.png" alt="" />
<p class="img-caption"><strong>Figure 1.</strong> The Android SDK Manager shows the
SDK packages that are available, already installed, or for which an update is available.</p>



<h3>Additional information</h3>

<p>For more information about using the SDK Manager and some of the available packages,
see the <a href="{@docRoot}tools/help/sdk-manager.html">SDK Manager</a> document.</p>

<p>Everything you need to develop Android apps is on this web site, including <a
href="{@docRoot}design/index.html">design guidelines</a>,
<a href="{@docRoot}training/index.html">developer training</a>, <a
href="{@docRoot}reference/packages.html">API reference</a>, and information
about how you can <a href="{@docRoot}distribute/index.html">distribute your app</a>.
For additional resources about developing and distributing your app, see the
<a href="{@docRoot}support.html">Developer Support Resources</a>.</p>