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      1 page.title=Publishing Overview
      2 @jd:body
      3 
      4 <div id="qv-wrapper">
      5 <div id="qv">
      6   <h2>Quickview</h2>
      7   <ul>
      8     <li>Learn how to publish Android apps.</li>
      9     <li>Find out how to prepare apps for release.</li>
     10     <li>Learn how to release apps to users.</li>
     11   </ul>
     12   <h2>In this document</h2>
     13   <ol>
     14     <li><a href="#publishing-prepare">Preparing Your Application for Release</a></li>
     15     <li><a href="#publishing-release">Releasing Your Application to Users</a>
     16   </ol>
     17   <h2>See also</h2>
     18   <ol>
     19     <li><a href="{@docRoot}distribute/tools/launch-checklist.html">Publishing on Google Play</a></li>
     20   </ol>
     21 </div>
     22 </div>
     23 
     24 <p>Publishing is the general process that makes your Android applications available to users. When you
     25 publish an Android application you perform two main tasks:</p>
     26 
     27 <ul>
     28   <li>You prepare the application for release.
     29     <p>During the preparation step you build a release version of your application, which users can
     30       download and install on their Android-powered devices.</p>
     31   </li>
     32   <li>You release the application to users.
     33     <p>During the release step you publicize, sell, and distribute the release version of your
     34       application to users.</p>
     35   </li>
     36 </ul>
     37 
     38 <p>Usually, you release your application through an application marketplace, such as <a href="{@docRoot}distribute/googleplay/index.html">Google Play</a>.
     39 However, you can also release applications by sending them directly to users or by letting users
     40 download them from your own website.</p>
     41 
     42 <p>Figure 1 shows how the publishing process fits into the overall Android <a
     43 href="{@docRoot}tools/workflow/index.html">application development process</a>.
     44 The publishing process is typically performed after you finish testing your application in a debug
     45 environment. Also, as a best practice, your application should meet all of your release criteria for
     46 functionality, performance, and stability before you begin the publishing process.</p>
     47 
     48 <img src="{@docRoot}images/publishing/publishing_overview.png" alt="Shows where the publishing
     49        process fits into the overall development process" height="86" id="figure1" />
     50 <p class="img-caption">
     51   <strong>Figure 1.</strong> Publishing is the last phase of the Android <a
     52 href="{@docRoot}tools/workflow/index.html">application development process</a>.
     53 </p>
     54 
     55 <h2 id="publishing-prepare">Preparing Your Application for Release</h2>
     56 
     57 <p>Preparing your application for release is a multi-step process that involves the following
     58 tasks:</p>
     59 
     60 <ul>
     61   <li>Configuring your application for release.
     62     <p>At a minimum you need to remove {@link android.util.Log} calls and remove the
     63     <a href="{@docRoot}guide/topics/manifest/application-element.html#debug">android:debuggable</a>
     64     attribute from your manifest file. You should also provide values for the
     65     <code>android:versionCode</code> and <code>android:versionName</code> attributes, which are
     66     located in the
     67     <a href="{@docRoot}guide/topics/manifest/manifest-element.html">&lt;manifest&gt;</a>
     68     element. You may also have to configure several other settings to meet Google Play
     69     requirements or accomodate whatever method you're using to release your application.</p>
     70     <p>If you are using Gradle build files, you can use the <em>release</em> build type to set
     71     your build settings for the published version of your app.  </p>
     72   </li>
     73   <li>Building and signing a release version of your application.
     74     <p>You can use the Gradle build files with the <em>release</em> build type to build and sign a
     75     release version of your application. See
     76     <a href="{@docRoot}tools/building/building-studio.html">Building and Running from Android
     77       Studio</a>.</p>
     78   </li>
     79   <li>Testing the release version of your application.
     80     <p>Before you distribute your application, you should thoroughly test the release version on at
     81     least one target handset device and one target tablet device.</p>
     82   </li>
     83   <li>Updating application resources for release.
     84     <p>You need to be sure that all application resources such as multimedia files and graphics
     85     are updated and included with your application or staged on the proper production servers.</p>
     86   </li>
     87   <li>Preparing remote servers and services that your application depends on.
     88     <p>If your application depends on external servers or services, you need to be sure they
     89     are secure and production ready.</p>
     90   </li>
     91 </ul>
     92 
     93 <p>You may have to perform several other tasks as part of the preparation process. For example, you
     94 will need to get a private key for signing your application, and you may need to get a Maps API
     95 release key if you are using the <a
     96 href="http://code.google.com/android/add-ons/google-apis/maps-overview.html">Google Maps external
     97 library</a>. You will also need to create an icon for your application, and you may want to prepare
     98 an End User License Agreement (EULA) to protect your person, organization, and intellectual
     99 property.</p>
    100 
    101 <p>When you are finished preparing your application for release you will have a signed
    102 <code>.apk</code> file that you can distribute to users.</p>
    103 
    104 <p>To learn how to prepare your application for release, see <a
    105 href="{@docRoot}tools/publishing/preparing.html">Preparing for Release</a> in the Dev Guide. This
    106 topic provides step-by-step instructions for configuring and building a release version of your
    107 application.</p>
    108 
    109 <h2 id="publishing-release">Releasing Your Application to Users</h2>
    110 
    111 <p>You can release your Android applications several ways. Usually, you release applications
    112 through an application marketplace such as Google Play, but you can also release applications
    113 on your own website or by sending an application directly to a user.
    114 
    115 <h3 id="publishing-marketplace">Releasing through an App Marketplace</h3>
    116 
    117 <p>If you want to distribute your apps to the broadest possible audience, releasing through
    118 an app marketplace such as Google Play is ideal. </p>
    119 
    120 <p>Google Play is the premier marketplace for Android apps and is particularly
    121 useful if you want to distribute your applications to a large global audience.
    122 However, you can distribute your apps through any app marketplace you want or
    123 you can use multiple marketplaces.</p>
    124 
    125 
    126 <h4 id="publishing-market">Releasing Your Applications on Google Play</h4>
    127 
    128 <p>Google Play is a robust publishing platform that helps you publicize, sell, and distribute
    129 your Android applications to users around the world. When you release your applications through
    130 Google Play you have access to a suite of developer tools that let you analyze your sales,
    131 identify market trends, and control who your applications are being distributed to. You also have
    132 access to several revenue-enhancing features such as <a
    133 href="{@docRoot}google/play/billing/index.html">in-app billing</a> and <a
    134 href="{@docRoot}google/play/licensing/index.html">application licensing</a>. The rich array of tools
    135 and features, coupled with numerous end-user community features, makes Google Play the premier
    136 marketplace for selling and buying Android applications.</p>
    137 
    138 <p>Releasing your application on Google Play is a simple process that involves three basic
    139   steps:</p>
    140 
    141 <ul>
    142   <li>Preparing promotional materials.
    143     <p>To fully leverage the marketing and publicity capabilities of Google Play, you need to
    144     create promotional materials for your application, such as screenshots, videos, graphics, and
    145     promotional text.</p>
    146   </li>
    147   <li>Configuring options and uploading assets.
    148     <p>Google Play lets you target your application to a worldwide pool of users and devices.
    149     By configuring various Google Play settings, you can choose the countries you want to
    150     reach, the listing languages you want to use, and the price you want to charge in each
    151     country. You can also configure listing details such as the application type, category, and
    152     content rating. When you are done configuring options you can upload your promotional materials
    153     and your application as a draft (unpublished) application.</p>
    154   </li>
    155   <li>Publishing the release version of your application.
    156     <p>If you are satisfied that your publishing settings are correctly configured and your
    157     uploaded application is ready to be released to the public, you can simply click
    158     <strong>Publish</strong > in the developer console and within minutes your application will be
    159     live and available for download around the world.</p>
    160   </li>
    161 </ul>
    162 
    163 <p>For information complete information, see <a href="{@docRoot}distribute/googleplay/index.html">Google Play</a>.</p>
    164 
    165 
    166 <h3 id="publishing-email">Releasing your application through email</h3>
    167 
    168 <div class="figure" style="width:246px">
    169   <img src="{@docRoot}images/publishing/publishing_via_email.png"
    170        alt="Screenshot showing the graphical user interface users see when you send them an app"
    171        style="width:240px;" />
    172   <p class="img-caption">
    173     <strong>Figure 1.</strong> Users can simply click <strong>Install</strong> when you send them
    174     an application via email.
    175   </p>
    176 </div>
    177 
    178 <p>The easiest and quickest way to release your application is to send it to a user through
    179 email. To do this, you prepare your application for release and then attach it to an email
    180 and send it to a user. When the user opens your email message on their Android-powered device
    181 the Android system will recognize the APK and display an <strong>Install Now</strong>
    182 button in the email message (see figure 1). Users can install your application by touching the
    183 button.</p>
    184 
    185 <p class="note"><strong>Note:</strong> The <strong>Install Now</strong> button
    186 shown in Figure 1 appears only if a user has configured their device to allow
    187 installation from <a href="#unknown-sources">unknown sources</a> and has opened your
    188 email with the native Gmail application.</p>
    189 
    190 <p>Distributing applications through email is convenient if you are sending your application to
    191 only a few trusted users, but it provides few protections from piracy and unauthorized
    192 distribution; that is, anyone you send your application to can simply forward it to someone else.</p>
    193 
    194 <h2 id="publishing-website">Releasing through a web site</h2>
    195 
    196 <p>If you do not want to release your app on a marketplace like Google Play, you
    197 can make the app available for download on your own website or server, including
    198 on a private or enterprise server. To do this, you must first prepare your
    199 application for release in the normal way. Then all you need to do is host the
    200 release-ready APK file on your website and provide a download link to users.
    201 </p>
    202 
    203 <p>When users browse to the download link from their Android-powered devices,
    204 the file is downloaded and Android system automatically starts installing it on
    205 the device. However, the installation process will start automatically only if
    206 the user has configured their Settings to allow the installation of apps from
    207 <a href="#unknown-sources">unknown sources</a>.</p>
    208 
    209 <p>Although it is relatively easy to release your application on your own
    210 website, it can be inefficient. For example, if you want to monetize your
    211 application you will have to process and track all financial transactions
    212 yourself and you will not be able to use Google Play's <a
    213 href="{@docRoot}google/play/billing/index.html">In-app Billing service</a>
    214 to sell in-app products. In addition, you will not be able to use the <a
    215 href="{@docRoot}google/play/licensing/index.html">Licensing service</a> to
    216 help prevent unauthorized installation and use of your application.</p>
    217 
    218 
    219 <h2 id="unknown-sources">User Opt-In for Apps from Unknown Sources</h2>
    220 
    221 <div class="figure" style="width:246px;margin-top:0;">
    222   <img src="{@docRoot}images/publishing/publishing_unknown_sources_sm.png"
    223        alt="Screenshot showing the setting for accepting download and install of
    224        apps from unknown sources." style="width:240px;" />
    225   <p class="img-caption">
    226     <strong>Figure 2.</strong> Users must enable the <strong>Unknown sources</strong>
    227     setting before they can install apps not downloaded from Google Play.
    228   </p>
    229 </div>
    230 
    231 <p>Android protects users from inadvertent download and install of apps from
    232 locations other than Google Play (which is trusted). It blocks such installs
    233 until the user opts-in <strong>Unknown sources</strong> in
    234 Settings&nbsp;<strong>&gt;</strong>&nbsp;Security, shown in Figure 2. To allow
    235 the installation of applications from other sources, users need to enable the
    236 Unknown sources setting on their devices, and they need to make this
    237 configuration change <em>before</em> they download your application to their
    238 devices.</p>
    239 
    240 <p class="note">Note that some network providers do not allow users to install
    241 applications from unknown sources.</p>
    242