am 30a6657e: Merge change Ic9b31801 into eclair

## SDK version identifiers used in the published docs

  # major[.minor] version for current SDK. (full releases only)

framework_docs_SDK_VERSION:=1.6

framework_docs_SDK_VERSION:=2.0

  # release version (ie "Release x")  (full releases only)

framework_docs_SDK_REL_ID:=1

  # name of current SDK directory (full releases only)

page.title=Updating Your SDK

@jd:body

<div id="qv-wrapper">

<div id="qv">

<h2>Quickview</h2>

<ul>

  <li>Use the Android SDK and AVD Manager to 

   install individual Android platforms, add-ons, tools

   and documentation.</li>

  <li>Keep your SDK up-to-date without having to install new

   SDK directories and update your Eclipse preferences or {@code PATH} 

   variable.</li>

  <li>The Android SDK and AVD Manager is available only with the 

   Android 1.6 SDK or later.</li>

</ul>

<h2>In this document</h2>

<ol>

  <li><a href="#Install">Installing SDK Packages</a></li>

  <li><a href="#Add">Adding SDK Package Sites</a></li>

</ol>

</div>

</div>

<p>The <strong>Android SDK and AVD Manager</strong> lets you

update your Android SDK without a visit to the

Android Developers web site. Instead of downloading an entirely new SDK

that includes Android platforms, tools, and documentation, you can instead

install only the individual packages that you want.</p>

<p>For example, when a new version of the Android platform is made available

for developing applications, use the SDK and AVD Manager to install the

platform into your existing SDK directory. You can then use the new platform

in your <a href="{@docRoot}guide/developing/tools/avd.html">AVDs</a> and

build your apps against it.</p>

<p>The benefit to using this feature is that your SDK directory will

remain the same. You don't need to reset the SDK location in

your Eclipse preferences or modify your {@code PATH} environment variable,

because all new packages are installed into your existing SDK directory.</p>

<p>The SDK and AVD Manager can be opened in two ways:</p>

<ul>

  <li>Execute the 

  <a href="{@docRoot}guide/developing/tools/othertools.html#android">{@code 

  android}</a> tool with no options, or</li>

  <li>From Eclipse, select <strong>Window</strong> > <strong>Android 

  SDK and AVD Manager</strong>.</li>

</ul>

<p>The screenshot below shows the Android SDK and AVD Manager

with the Available Packages open.</p>

<img src="{@docRoot}images/sdk_manager_packages.png" alt="" />

<h2 id="Install">Installing SDK Packages</h2>

<p>When a new Android SDK platform, add-on, set of development tools or

documentation becomes available, you can quickly download and

install them into your existing Android SDK:</p>

<ol>

  <li>Select <strong>Available Packages</strong> in the left panel.

  This will reveal all packages currently available for download.</li>

  <li>Select the packages you'd like to install and click <strong>Install

  Selected</strong>.</li>

  <li>Verify and accept the packages you want and click <strong>Install

  Accepted</strong>. The packages will now be installed into your existing

  Android SDK directories.</li>

</ol>

<p>New platforms are automatically saved into the 

<code><em>&lt;sdk_dir>/</em>platforms/</code> directory of your SDK;

new add-ons are saved in the <code><em>&lt;sdk_dir>/</em>add-ons/</code>

directory; and new documentation is saved in the existing

<code><em>&lt;sdk_dir>/</em>docs/</code> directory (old docs are replaced).</p>

<p class="note"><strong>Tip:</strong>

Use the "Display updates only" checkbox to show only the packages

you do not have.</p>

<h2 id="Add">Adding SDK Package Sites</h2>

<p>By default, <strong>Available Packages</strong> only shows 

the Google repository for Android SDK packages and Google API

add-ons. You can add additional sites that host

Android SDK add-ons, then download add-on packages from them.</p>	

<p>For example, a mobile carrier or hardware manufacturer may offer additional

API libraries that are supported by their own Android-powered devices. 

In order for you to develop using their libraries, you may need to install an 

Android SDK add-on.

If the carrier or manufacturer has hosted an add-on repository file on their

web site, add their site to the SDK and AVD Manager:</p>

<ol>

  <li>Select <strong>Available Packages</strong> in the left panel.</li>

  <li>Click <strong>Add Site</strong> and enter the URL of the 

{@code repository.xml} file. Click <strong>OK</strong>.</li>

</ol>

<p>Any SDK packages available from the web site will now be listed and

available for you to install in your existing Android SDK.</p>

      <li><a href="<?cs var:toroot ?>guide/developing/debug-tasks.html">

            <span class="en">Debugging Tasks</span>

          </a></li>

      <li><a href="<?cs var:toroot ?>guide/developing/updating-sdk.html">Updating Your SDK</a></li>

      <li class="toggle-list">

        <div><a href="<?cs var:toroot ?>guide/developing/tools/index.html">

            <span class="en">Tools</span>

page.title=Installing the Android 2.0 SDK

sdk.preview=0

@jd:body

<div id="qv-wrapper">

<div id="qv">

  <h2>In this document</h2>

  <ol>

    <li><a href="#Preparing">Prepare for Installation</a></li>

    <li><a href="#Installing">Install the SDK</a></li>

    <li><a href="#InstallingADT">Install the ADT Plugin for Eclipse</a></li>

    <li><a href="#sdkContents">SDK Contents</a></li>

    <li><a href="#NextSteps">Next Steps</a></li>

    <li><a href="#InstallationNotes">Installation Notes</a></li>

    <li><a href="#Troubleshooting">Troubleshooting ADT Installation</a></li>

  </ol>

</div>

</div>

<p>This page describes how to install the Android SDK and set up your

development environment for the first time.</p>

<p>If you encounter any problems during installation, see the 

<a href="#InstallationNotes">Installation Notes</a> at the bottom of

this page.</p>

<h4>Updating?</h4>

<p>If you have already installed an earlier version

of the Android SDK, please instead read <a href="{@docRoot}sdk/updating-sdk.html">Updating Your SDK</a>.

</p>

<h2 id="Preparing">Prepare for Installation</h2>

<p>Before you begin, take a moment to confirm that your development machine

meets the <a href="requirements.html">System Requirements</a>.</p>

<p>If you will be developing in Eclipse with the Android Development

Tools (ADT) Plugin — the recommended path if you are new to

Android — make sure that you have a suitable version of Eclipse

installed on your computer (3.4 or newer is recommended). If you need 

to install Eclipse, you can download it from this location: </p>

<p style="margin-left:2em;"><a href=

"http://www.eclipse.org/downloads/">http://www.eclipse.org/downloads/</a></p>

<p>A Java or RCP version of Eclipse is recommended. </p>

<h2 id="Installing">Install the SDK</h2>

<p>After downloading the Android SDK, unpack the Android SDK .zip archive 

to a suitable location on your machine. By default, the SDK files are unpacked 

into a directory named <code>android_sdk_<em>&lt;platform</em>&gt;_<em>&lt;release&gt;</em></code>. </p>

<p>Make a note of the name and location of the unpacked SDK directory on your system &mdash; you 

will need to refer to the SDK directory later, when setting up the Android plugin or when 

using the SDK tools.</p>

<p>Optionally, you may want to add the location of the SDK's primary <code>tools</code> directory 

to your system <code>PATH</code>. The primary <code>tools/</code> directory is located at the root of the 

SDK folder. Adding <code>tools</code> to your path lets you run Android Debug Bridge (adb) and 

the other command line <a href="{@docRoot}guide/developing/tools/index.html">tools</a> without 

needing to supply the full path to the tools directory. </p>

<ul>

    <li>On Linux, edit your <code>~/.bash_profile</code> or <code>~/.bashrc</code> file. Look

    for a line that sets the PATH environment variable and add the

    full path to the <code>tools/</code> directory to it. If you don't 

    see a line setting the path, you can add one:</li>

    <ul><code>export PATH=${PATH}:<em>&lt;your_sdk_dir&gt;</em>/tools</code></ul>

    <li>On a Mac OS X, look in your home directory for <code>.bash_profile</code> and

    proceed as for Linux. You can create the <code>.bash_profile</code> if 

    you haven't already set one up on your machine. </li>

    <li>On Windows, right-click on My Computer, and select Properties.  

  Under the Advanced tab, hit the Environment Variables button, and in the

  dialog that comes up, double-click on Path (under System Variables). Add the full path to the 

  <code>tools/</code> directory to the path. </li>

  </ul>

<p>Note that, if you update your SDK in the future, you 

should remember to update your <code>PATH</code> settings to point to the new location, if different.</p>

<p>If you will be using the Eclipse IDE as your development environment,

the next section describes how to install the Android Development Tools (ADT) plugin and set up Eclipse. 

If you choose not to use Eclipse, you can 

develop Android applications in an IDE of your choice and then compile, debug and deploy using

the tools included in the SDK (skip to <a href="#NextSteps">Next Steps</a>).</p>

<h2 id="InstallingADT">Install the ADT Plugin for Eclipse</h2>

<p>Android offers a custom plugin for the Eclipse IDE, called Android

Development Tools (ADT), that is designed to give you a powerful,

integrated environment in which to build Android applications. It

extends the capabilites of Eclipse to let you quickly set up new Android

projects, create an application UI, add components based on the Android

Framework API, debug your applications using the Android SDK tools, and even export

signed (or unsigned) APKs in order to distribute your application.</p>

<p>In general, using Eclipse with ADT is a highly recommended approach to

Android development and is the fastest way to get started. (If you prefer to

work in an IDE other than Eclipse, you do not need to install Eclipse or ADT,

instead, you can directly use the SDK tools to build and debug your

application&mdash;skip to <a href="#NextSteps">Next Steps</a>.)</p>

<p>Once you have the Eclipse IDE installed, as described in <a

href="#Preparing">Preparing for Installation</a>, follow the steps below to

download the ADT plugin and install it in your respective Eclipse environment.

</p>

<table style="font-size:100%">

<tr><th>Eclipse 3.4 (Ganymede)</th><th>Eclipse 3.5 (Galileo)</th></tr>

<tr>

<td width="45%">

<!-- 3.4 steps -->

<ol>

    <li>Start Eclipse, then select <strong>Help</strong> &gt; <strong>Software Updates...</strong>. 

        In the dialog that appears, click the <strong>Available Software</strong> tab. </li>

    <li>Click <strong>Add Site...</strong> </li>

    <li>In the Add Site dialog that appears, enter this URL in the "Location" field:

      <pre style="margin-left:0">https://dl-ssl.google.com/android/eclipse/</pre>

        <p>Note: If you have trouble aqcuiring the plugin, try using "http" in the Location URL,

        instead of "https" (https is preferred for security reasons).</p>   

      <p>Click <strong>OK</strong>.</p></li>

    <li>Back in the Available Software view, you should see the plugin listed by the URL,

    with "Developer Tools" nested within it. Select the checkbox next to 

      Developer Tools and click <strong>Install...</strong></li>

    <li>On the subsequent Install window, "Android DDMS" and "Android Development Tools"

    should both be checked. Click <strong>Next</strong>. </li>

    <li>Read and accept the license agreement, then click <strong>Finish</strong>.</li>

    <li>Restart Eclipse. </li>

</ol>

</td>

<td>

<!-- 3.5 steps -->

<ol>

    <li>Start Eclipse, then select <strong>Help</strong> &gt; <strong>Install

        New Softare</strong>. </li>

    <li>In the Available Software dialog, click <strong>Add...</strong>.</li>

    <li>In the Add Site dialog that appears, enter a name for the remote site

        (e.g., "Android Plugin") in the "Name" field. 

        <p>In the "Location" field, enter this URL:</p>

        <pre>https://dl-ssl.google.com/android/eclipse/</pre>

        <p>Note: If you have trouble aqcuiring the plugin, you can try

           using "http" in the URL, instead of "https" (https is preferred for 

           security reasons).</p>

        <p>Click <strong>OK</strong>.</p>

    </li>

    <li>Back in the Available Software view, you should now see "Developer

        Tools" added to the list. Select the checkbox next to Developer Tools, 

        which will automatically select the nested tools Android DDMS and Android 

        Development Tools. 

        Click <strong>Next</strong>. </li>

    <li>In the resulting Install Details dialog, the Android DDMS and Android 

        Development Tools features are listed. Click <strong>Next</strong> to 

        read and accept the license agreement and install any dependencies, 

        then click <strong>Finish</strong>. </li>

    <li>Restart Eclipse. </li>

</ol>

</td>

</tr>

</table>

<p>Now modify your Eclipse preferences to point to the Android SDK directory:</p>

<ol>

    <li>Select <strong>Window</strong> &gt; <strong>Preferences...</strong> to open the Preferences

        panel (Mac OS X: <strong>Eclipse</strong> &gt; <strong>Preferences</strong>).</li>

    <li>Select <strong>Android</strong> from the left panel. </li>

    <li>For the <em>SDK Location</em> in the main panel, click <strong>Browse...</strong> and 

        locate your downloaded SDK directory. </li>

    <li>Click <strong>Apply</strong>, then <strong>OK</strong>.</li>

</ol>

<p>Done! If you haven't encountered any problems, then you're ready to

begin developing Android applications. See the 

<a href="#NextSteps">Next Steps</a> section for suggestions on how to start. </p>

<h2 id="sdkContents">Contents of the SDK</h2>

<p>Once you've downloaded and unpacked the SDK, open the SDK directory 

and take a look at what's inside.</p>

<p>The table below describes the SDK directory contents. </p>

<table>

<tr>

<th colspan="3">Name</th><th>Description</th>

</tr>

<tr>

<td colspan="3"><code>add-ons/</code></td>

<td>Contains add-ons to the Android SDK development

environment, which let you develop against external libraries that are available on some

devices. </td>

</tr>

<tr>

<td colspan="3"><code>docs/</code></td>

<td>A full set of documentation in HTML format, including the Developer's Guide,

API Reference, and other information.</td>

</tr>

<tr>

<td colspan="3"><code>platforms/</code></td>

<td>Contains a set of Android platform versions that you can develop

applications against, each in a separate directory.  </td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td colspan="2"><code>&lt;platform&gt;/</code></td>

<td>Platform version directory, for example "Android 1.6". All platform version 

directories contain a similar set of files and subdirectory structure.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;">&nbsp;</td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>data/</code></td>

<td>Storage area for default fonts and resource definitions.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>images/</code></td>

<td>Storage area for default disk images, including the Android system image, 

the default userdata image, the default ramdisk image, and more. The images 

are used in emulator sessions.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>samples/</code></td>

<td>Contains a wide variety of sample applications that you can load as projects

into your development environment, compile, and run on the emulator.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>skins/</code></td>

<td>A set of emulator skins available for the platform version. Each skin is

designed for a specific screen resolution.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>templates/</code></td>

<td>Storage area for file templates used by the SDK development tools.</td>

</tr>

<tr>

<td style="width:2em;border-bottom-color:white;"></td>

<td style="width:2em;border-bottom-color:white;"></td>

<td><code>tools/</code></td>

<td>Any development tools that are specific to the platform version.</td>

</tr>

<tr>

<td style="width:2em;"></td>

<td style="width:2em;"></td>

<td><code>android.jar</code></td>

<td>The Android library used when compiling applications against this platform

version.</td>

</tr>

<tr>

<td colspan="3"><code>tools/</code></td>

<td>Contains the set of development and profiling tools available to you, such

as the emulator, the <code>android</code> tool, adb, ddms, and more.</td>

</tr>

<tr>

<td colspan="3"><code>RELEASE_NOTES.html</code></td>

<td>A file that loads the local version of the SDK release notes, if

available.</td>

</tr>

<tr>

<td colspan="3"><code>documentation.html</code></td>

<td>A file that loads the entry page for the local Android SDK

documentation.</td>

</tr>

</table>

<h2 id="InstallationNotes">Installation Notes</h2>

<h3>Ubuntu Linux Notes</h3>

<ul>

  <li>If you need help installing and configuring Java on your

    development machine, you might find these resources helpful: 

    <ul>

      <li><a href="https://help.ubuntu.com/community/Java">https://help.ubuntu.com/community/Java </a></li>

      <li><a href="https://help.ubuntu.com/community/Java">https://help.ubuntu.com/community/JavaInstallation</a></li>

    </ul>

  </li>

  <li>Here are the steps to install Java and Eclipse, prior to installing

  the Android SDK and ADT Plugin.

    <ol>

      <li>If you are running a 64-bit distribution on your development

      machine, you need to install the <code>ia32-libs</code> package using

      <code>apt-get:</code>:

      <pre>apt-get install ia32-libs</pre>

      </li>

      <li>Next, install Java: <pre>apt-get install sun-java6-bin</pre></li>

      <li>The Ubuntu package manager does not currently offer an Eclipse 3.3

      version for download, so we recommend that you download Eclipse from

      eclipse.org (<a

      href="http://www.eclipse.org/downloads/">http://www.eclipse.org/

      downloads/</a>). A Java or RCP version of Eclipse is recommended.</li>

      <li>Follow the steps given in previous sections to install the SDK 

      and the ADT plugin. </li>

    </ol>

  </li>

</ul>

<h3>Other Linux Notes</h3>

<ul>

  <li>If JDK is already installed on your development computer, please

  take a moment to make sure that it meets the version requirements listed

  in the <a href="requirements.html">System Requirements</a>.

  In particular, note that some Linux distributions may include JDK 1.4 or Gnu

  Compiler for Java, both of which are not supported for Android development.</li>

</ul>

<h2 id="Troubleshooting">Troubleshooting ADT Installation</h2>

<p> If you are having trouble downloading the ADT plugin after following the

steps above, here are some suggestions: </p>

<ul>

  <li>If Eclipse can not find the remote update site containing the ADT plugin,

try changing the remote site URL to use http, rather than https. That is, set

the Location for the remote site to:

<pre>http://dl-ssl.google.com/android/eclipse/</pre></li> 

<li>If you are behind a firewall (such as a corporate firewall), make sure that

you have properly configured your proxy settings in Eclipse. In Eclipse 3.3/3.4,

you can configure proxy information from the main Eclipse menu in

<strong>Window</strong> (on Mac OS X, <strong>Eclipse</strong>) &gt;

<strong>Preferences</strong> &gt; <strong>General</strong> &gt; <strong>Network

Connections</strong>.</li>

</ul>

<p> If you are still unable to use Eclipse to download the ADT plugin as a

remote update site, you can download the ADT zip file to your local machine and

manually install it:</p>

<ol>

  <li><a href="http://developer.android.com/sdk/preview/index.html">Download the

      ADT Plugin zip file</a> (do not unpack it).</li>

  <li>Follow steps 1 and 2 in the <a href="#InstallingADT">default install 

      instructions</a> (above).</li>

  <li>In the Add Site dialog, click <strong>Archive</strong>.</li>

  <li>Browse and select the downloaded zip file.</li>

  <li>In Eclipse 3.5 only, enter a name for the local update site (e.g.,

      "Android Plugin") in the "Name" field.</li>

  <li>Click <strong>OK</strong>.

  <li>Follow the remaining procedures as listed for 

      <a href="#InstallingADT">default installation</a> above,

      starting from step 4.</li>

</ol>

<p>To update your plugin once you've installed using the zip file, you will have

to follow these steps again instead of the default update instructions.</p>

<h4>Other install errors</h4>

<p>Note that there are features of ADT that require some optional 

Eclipse components (for example, WST). If you encounter an error when 

installing ADT, your Eclipse installion might not include these components. 

For information about how to quickly add the necessary components to your 

Eclipse installation, see the troubleshooting topic 

<a href="{@docRoot}guide/appendix/faq/troubleshooting.html#installeclipsecomponents">ADT 

Installation Error: "requires plug-in org.eclipse.wst.sse.ui"</a>.</p>

<h4>For Linux users</h4>

<p>If you encounter this error when installing the ADT Plugin for Eclipse: 

<pre>

An error occurred during provisioning.

Cannot connect to keystore.

JKS</pre>

<p>

...then your development machine lacks a suitable Java VM. Installing Sun

Java 6 will resolve this issue and you can then reinstall the ADT

Plugin.</p>

<div class="special" id="next-steps" style="display:none">

  <h2>Thank you for downloading the Android SDK!</h2>

  <p>Your download should be underway. If not, <a id="click-download">click here to start the download</a>.</p>

  <p>If you are upgrading from a previously installed version of the Android SDK, see

    <a href="upgrading.html" class="addVersionPath">Upgrading the SDK</a>.</p>

  <p>If you are installing for the first time, read 

    <a href="installing.html" class="addVersionPath">Installing the Android SDK</a> to get your environment set up.

    Once you have completed your installation, visit the <em>Dev Guide</em> tab and begin with the 

    <a href="/guide/tutorials/hello-world.html">Hello World</a> tutorial to create your first

    Android application. From there, learn more about Android with the 

    <a href="/guide/topics/fundamentals.html">Application Fundamentals</a> documentation.</p>

  <p>If you want to re-read the license agreement, it's available to you in the <em>SDK</em> tab.</p>

  <p>To set up your Android development environment, please read the guide to

    <a href="installing.html" class="addVersionPath">Installing the Android SDK</a>.

    Once you have completed the installation, see the

    <a href="/guide/index.html">Dev Guide</a> for documentation about

    developing Android applications.</p>

</div>

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