page.title=In-app Billing Reference <span style="font-size:16px;">(IAB Version 2)</span>
@jd:body

<div style="background-color:#fffdeb;width:100%;margin-bottom:1em;padding:.5em;">In-app Billing Version 2 is superseded. Please <a href="{@docRoot}google/play/billing/billing_overview.html#migration">migrate to Version 3</a> at your earliest convenience.</div>
    <div id="qv-wrapper" style="margin-top:0;">
<div id="qv">
<h2>In this document</h2>
  <ol>
  <li><a href="#billing-codes">Server Response Codes</a></li>
  <li><a href="#billing-interface">API Reference</a></li>
  <li><a href="#billing-intents">Broadcast Intents</a></li>
  <li><a href="#http-api">REST API for Subscriptions</a></li>
  </ol>	

<h2>Related Samples</h2>
  <ol>
  <li><a href="{@docRoot}google/play/billing/v2/billing_integrate.html#billing-download">Sample
    Application (V2)</a></li>
  </ol>  

</div>
</div>
<p>This documentation provides technical reference information for using the In-app Billing Version 2 API. </p>

<h2 id="billing-codes">Server Response Codes</h2>
<p>The following table lists all of the server response codes that are sent from Google Play to
your application. Google Play sends these response codes asynchronously as
<code>response_code</code> extras in the <code>com.android.vending.billing.RESPONSE_CODE</code>
broadcast intent. Your application must handle all of these response codes.</p>

<p class="table-caption" id="response-codes-table"><strong>Table 6.</strong> Summary of response
codes returned by Google Play.</p>

<table>
<tr>
<th>Response Code</th>
<th>Value</th>
<th>Description</th>
</tr>
<tr>
  <td><code>RESULT_OK</code></td>
  <td>0</td>
  <td>Indicates that the request was sent to the server successfully. When this code is returned in
  response to a <code>CHECK_BILLING_SUPPORTED</code> request, indicates that billing is
  supported.</td>
</tr>
<tr>
  <td><code>RESULT_USER_CANCELED</code></td>
  <td>1</td>
  <td>Indicates that the user pressed the back button on the checkout page instead of buying the
  item.</td>
</tr>
<tr>
  <td><code>RESULT_SERVICE_UNAVAILABLE</code></td>
  <td>2</td>
  <td>Indicates that the network connection is down.</td>
</tr>
<tr>
  <td><code>RESULT_BILLING_UNAVAILABLE</code></td>
  <td>3</td>
  <td>Indicates that In-app Billing is not available because the <code>API_VERSION</code> that you
  specified is not recognized by the Google Play application or the user is ineligible for in-app
  billing (for example, the user resides in a country that prohibits in-app purchases).</td>
</tr>
<tr>
  <td><code>RESULT_ITEM_UNAVAILABLE</code></td>
  <td>4</td>
  <td>Indicates that Google Play cannot find the requested item in the application's product
  list. This can happen if the product ID is misspelled in your <code>REQUEST_PURCHASE</code>
  request or if an item is unpublished in the application's product list.</td>
</tr>
<tr>
  <td><code>RESULT_DEVELOPER_ERROR</code></td>
  <td>5</td>
  <td>Indicates that an application is trying to make an In-app Billing request but the application
  has not declared the com.android.vending.BILLING permission in its manifest. Can also indicate
  that an application is not properly signed, or that you sent a malformed request, such as a
  request with missing Bundle keys or a request that uses an unrecognized request type.</td>
</tr>
<tr>
  <td><code>RESULT_ERROR</code></td>
  <td>6</td>
  <td>Indicates an unexpected server error. For example, this error is triggered if you try to
purchase an item from yourself, which is not allowed by Google Wallet.</td>
</tr>
</table>
</p>

<h3 id="billing-interface">In-app billing Version 2 API reference</h3>

<p>The following section describes the interface for Google Play's In-app Billing service. The
interface is defined in the <code>IMarketBillingService.aidl</code> file, which is included with the
In-app Billing <a
href="{@docRoot}google/play/billing/v2/billing_integrate.html#billing-download">sample
application</a>.</p>
<p>The interface consists of a single request method <code>sendBillingRequest()</code>. This method
takes a single {@link android.os.Bundle} parameter. The Bundle parameter includes several key-value
pairs, which are summarized in table 7.</p>

<p class="table-caption"><strong>Table 7.</strong> Description of Bundle keys passed in a
<code>sendBillingRequest()</code> request.</p>

<table>

<tr>
<th>Key</th>
<th>Type</th>
<th>Possible Values</th>
<th>Required?</th>
<th>Description</th>
</tr>
<tr>
  <td><code>BILLING_REQUEST</code></td>
  <td><code>String</code></td>
  <td><code>CHECK_BILLING_SUPPORTED</code>, <code>REQUEST_PURCHASE</code>,
  <code>GET_PURCHASE_INFORMATION</code>, <code>CONFIRM_NOTIFICATIONS</code>, or
  <code>RESTORE_TRANSACTIONS</code></td>
  <td>Yes</td>
  <td>The type of billing request you are making with the <code>sendBillingRequest()</code> request.
  The possible values are discussed more below this table.</td>
</tr>
<tr>
  <td><code>API_VERSION</code></td>
  <td><code>int</code></td>
  <td>  <ul>
  <li><code>"2"</code> [<a href="#version_2">details</a>]</li>
  <li><code>"1"</code> [<a href="#version_1">details</a>]</li>
  </ul></td>
  <td>Yes</td>
  <td>The version of Google Play's In-app Billing service you want to use.</td>
</tr>
<tr>
  <td><code>PACKAGE_NAME</code></td>
  <td><code>String</code></td>
  <td>A valid package name.</td>
  <td>Yes</td>
  <td>The name of the application that is making the request.</td>
</tr>
<tr>
  <td><code>ITEM_ID</code></td>
  <td><code>String</code></td>
  <td>Any valid product identifier.</td>
  <td>Required for <code>REQUEST_PURCHASE</code> requests.</td>
  <td>The product ID of the item you are making a billing request for. Every in-app item that you
  sell using Google Play's In-app Billing service must have a unique product ID, which you
  specify on the Google Play Developer Console.</td>
</tr>
<tr>
  <td><code>NONCE</code></td>
  <td><code>long</code></td>
  <td>Any valid <code>long</code> value.</td>
  <td>Required for <code>GET_PURCHASE_INFORMATION</code> and <code>RESTORE_TRANSACTIONS</code>
  requests.</td>
  <td>A number used once. Your application must generate and send a nonce with each
  <code>GET_PURCHASE_INFORMATION</code> and <code>RESTORE_TRANSACTIONS</code> request. The nonce is
  returned with the <code>PURCHASE_STATE_CHANGED</code> broadcast intent, so you can use this value
  to verify the integrity of transaction responses form Google Play.</td>
</tr>
<tr>
  <td><code>NOTIFY_IDS</code></td>
  <td>Array of <code>long</code> values</td>
  <td>Any valid array of <code>long</code> values</td>
  <td>Required for <code>GET_PURCHASE_INFORMATION</code> and <code>CONFIRM_NOTIFICATIONS</code>
  requests.</td>
  <td>An array of notification identifiers. A notification ID is sent to your application in an
  <code>IN_APP_NOTIFY</code> broadcast intent every time a purchase changes state. You use the
  notification to retrieve the details of the purchase state change.</td>
</tr>
<tr>
  <td><code>DEVELOPER_PAYLOAD</code></td>
  <td><code>String</code></td>
  <td>Any valid <code>String</code> less than 256 characters long.</td>
  <td>No</td>
  <td>A developer-specified string that can be specified when you make a
  <code>REQUEST_PURCHASE</code> request. This field is returned in the JSON string that contains
  transaction information for an order. You can use this key to send supplemental information with
  an order. For example, you can use this key to send index keys with an order, which is useful if
  you are using a database to store purchase information. We recommend that you do not use this key
  to send data or content.</td>
</tr>
</table>

<p>The <code>BILLING_REQUEST</code> key can have the following values:</p>

<ul>
  <li><code>CHECK_BILLING_SUPPORTED</code>
    <p>This request verifies that the Google Play application supports In-app Billing. You
    usually send this request when your application first starts up. This request is useful if you
    want to enable or disable certain UI features that are relevant only to In-app Billing.</p>
  </li>
  <li><code>REQUEST_PURCHASE</code>
    <p>This request sends a purchase message to the Google Play application and is the foundation
    of In-app Billing. You send this request when a user indicates that he or she wants to purchase
    an item in your application. Google Play then handles the financial transaction by displaying
    the checkout user interface.</p>
  </li>
  <li><code>GET_PURCHASE_INFORMATION</code>
    <p>This request retrieves the details of a purchase state change. A purchase state change can
    occur when a purchase request is billed successfully or when a user cancels a transaction during
    checkout. It can also occur when a previous purchase is refunded. Google Play notifies your
    application when a purchase changes state, so you only need to send this request when there is
    transaction information to retrieve.</p>
  </li>
  <li><code>CONFIRM_NOTIFICATIONS</code>
    <p>This request acknowledges that your application received the details of a purchase state
    change. That is, this message confirms that you sent a <code>GET_PURCHASE_INFORMATION</code>
    request for a given notification and that you received the purchase information for the
    notification.</p>
  </li>
  <li><code>RESTORE_TRANSACTIONS</code>
    <p>This request retrieves a user's transaction status for managed purchases (see <a
    href="{@docRoot}google/play/billing/billing_admin.html#billing-purchase-type">Choosing a
    Purchase Type</a> for more information). You should send this message only when you need to
    retrieve a user's transaction status, which is usually only when your application is reinstalled
    or installed for the first time on a device.</p>
  </li>
</ul>

<p>Every In-app Billing request generates a synchronous response. The response is a {@link
android.os.Bundle} and can include one or more of the following keys:</p>

<ul>
  <li><code>RESPONSE_CODE</code>
    <p>This key provides status information and error information about a request.</p>
  </li>
  <li><code>PURCHASE_INTENT</code>
    <p>This key provides a {@link android.app.PendingIntent}, which you use to launch the checkout
    activity.</p>
  </li>
  <li><code>REQUEST_ID</code>
    <p>This key provides you with a request identifier, which you can use to match asynchronous
    responses with requests.</p>
  </li>
</ul>

<p>Some of these keys are not relevant to certain types of requests. Table 8 shows which keys are
returned for each request type.</p>

<p class="table-caption"><strong>Table 8.</strong> Description of Bundle keys that are returned with
each In-app Billing request type.</p>

<table>

<tr>
<th>Request Type</th>
<th>Keys Returned</th>
<th>Possible Response Codes</th>
</tr>
<tr>
  <td><code>CHECK_BILLING_SUPPORTED</code></td>
  <td><code>RESPONSE_CODE</code></td>
  <td><code>RESULT_OK</code>, <code>RESULT_BILLING_UNAVAILABLE</code>, <code>RESULT_ERROR</code>,
  <code>RESULT_DEVELOPER_ERROR</code></td>
</tr>
<tr>
  <td><code>REQUEST_PURCHASE</code></td>
  <td><code>RESPONSE_CODE</code>, <code>PURCHASE_INTENT</code>, <code>REQUEST_ID</code></td>
  <td><code>RESULT_OK</code>, <code>RESULT_ERROR</code>, <code>RESULT_DEVELOPER_ERROR</code></td>
</tr>
<tr>
  <td><code>GET_PURCHASE_INFORMATION</code></td>
  <td><code>RESPONSE_CODE</code>, <code>REQUEST_ID</code></td>
  <td><code>RESULT_OK</code>, <code>RESULT_ERROR</code>, <code>RESULT_DEVELOPER_ERROR</code></td>
</tr>
<tr>
  <td><code>CONFIRM_NOTIFICATIONS</code></td>
  <td><code>RESPONSE_CODE</code>, <code>REQUEST_ID</code></td>
  <td><code>RESULT_OK</code>, <code>RESULT_ERROR</code>, <code>RESULT_DEVELOPER_ERROR</code></td>
</tr>
<tr>
  <td><code>RESTORE_TRANSACTIONS</code></td>
  <td><code>RESPONSE_CODE</code>, <code>REQUEST_ID</code></td>
  <td><code>RESULT_OK</code>, <code>RESULT_ERROR</code>, <code>RESULT_DEVELOPER_ERROR</code></td>
</tr>
</table>

<h3 id="billing-intents">In-app billing broadcast intents</h3>

<p>The following section describes the In-app Billing broadcast intents that are sent by the Google
Play application. These broadcast intents inform your application about In-app Billing actions
that have occurred. Your application must implement a {@link android.content.BroadcastReceiver} to
receive these broadcast intents, such as the <code>BillingReceiver</code> that's shown in the in-app
billing <a href="{@docRoot}google/play/billing/v2/billing_integrate.html#billing-download">sample
application</a>.</p>

<h4>com.android.vending.billing.RESPONSE_CODE</h4>

<p>This broadcast intent contains a Google Play response code, and is sent after you make an
In-app Billing request. A server response code can indicate that a billing request was successfully
sent to Google Play or it can indicate that some error occurred during a billing request. This
intent is not used to report any purchase state changes (such as refund or purchase information).
For more information about the response codes that are sent with this response, see <a
href="#billing-codes">Google Play Response Codes for In-app Billing</a>. The sample application
assigns this broadcast intent to a constant named <code>ACTION_RESPONSE_CODE</code>.</p>

<h5>Extras</h5>

<ul type="none">
  <li><code>request_id</code>&mdash;a <code>long</code> representing a request ID. A request ID
  identifies a specific billing request and is returned by Google Play at the time a request is
  made.</li>
  <li><code>response_code</code>&mdash;an <code>int</code> representing the Google Play server
  response code.</li>
</ul>

<h4>com.android.vending.billing.IN_APP_NOTIFY</h4>

<p>This response indicates that a purchase has changed state, which means a purchase succeeded, was
canceled, or was refunded. This response contains one or more notification IDs. Each notification ID
corresponds to a specific server-side message, and each messages contains information about one or
more transactions. After your application receives an <code>IN_APP_NOTIFY</code> broadcast intent,
you send a <code>GET_PURCHASE_INFORMATION</code> request with the notification IDs to retrieve the
message details. The sample application assigns this broadcast intent to a constant named
<code>ACTION_NOTIFY</code>.</p>

<h5>Extras</h5>

<ul type="none">
  <li><code>notification_id</code>&mdash;a <code>String</code> representing the notification ID for
  a given purchase state change. Google Play notifies you when there is a purchase state change
  and the notification includes a unique notification ID. To get the details of the purchase state
  change, you send the notification ID with the <code>GET_PURCHASE_INFORMATION</code> request.</li>
</ul>

<h4>com.android.vending.billing.PURCHASE_STATE_CHANGED</h4>

<p>This broadcast intent contains detailed information about one or more transactions. The
transaction information is contained in a JSON string. The JSON string is signed and the signature
is sent to your application along with the JSON string (unencrypted). To help ensure the security of
your In-app Billing messages, your application can verify the signature of this JSON string. The
sample application assigns this broadcast intent to a constant named
<code>ACTION_PURCHASE_STATE_CHANGED</code>.</p>

<h5>Extras</h5>

<ul type="none">
  <li><code>inapp_signed_data</code>&mdash;a <code>String</code> representing the signed JSON
  string.</li>
  <li><code>inapp_signature</code>&mdash;a <code>String</code> representing the signature.</li>
</ul>

<p class="note"><strong>Note:</strong> Your application should map the broadcast intents and extras
to constants that are unique to your application. See the <code>Consts.java</code> file in the
sample application to see how this is done.</p>

<p>The fields in the JSON string are described in the following table (see table 9):</p>

<p class="table-caption"><strong>Table 9.</strong> Description of JSON fields that are returned with
a <code>PURCHASE_STATE_CHANGED</code> intent.</p>

<table>

<tr>
<th>Field</th>
<th>Description</th>
</tr>
<tr>
  <td>nonce</td>
  <td>A number used once. Your application generates the nonce and sends it with the
  <code>GET_PURCHASE_INFORMATION</code> request. Google Play sends the nonce back as part of the
  JSON string so you can verify the integrity of the message.</td>
</tr>
<tr>
  <td>notificationId</td>
  <td>A unique identifier that is sent with an <code>IN_APP_NOTIFY</code> broadcast intent. Each
  <code>notificationId</code> corresponds to a specify message that is waiting to be retrieved on
  the Google Play server. Your application sends back the <code>notificationId</code> with the
  <code>GET_PURCHASE_INFORMATION</code> message so Google Play can determine which messages you
  are retrieving.</td>
</tr>
<tr>
  <td>orderId</td>
  <td>A unique order identifier for the transaction. This corresponds to the Google Wallet Order
  ID.</td>
</tr>
<tr>
  <td>packageName</td>
  <td>The application package from which the purchase originated.</td>
</tr>
<tr>
  <td>productId</td>
  <td>The item's product identifier. Every item has a product ID, which you must specify in the
  application's product list on the Google Play Developer Console.</td>
</tr>
<tr>
  <td>purchaseTime</td>
  <td>The time the product was purchased, in milliseconds since the epoch (Jan 1, 1970).</td>
</tr>

<tr>
  <td>purchaseState</td>
  <td>The purchase state of the order. Possible values are 0 (purchased), 1 (canceled), 2
  (refunded), or 3 (expired, for subscription purchases only).</td>
</tr>
<tr>
  <td>purchaseToken</td>
  <td>A token that uniquely identifies a subscription purchase for a given item and user pair.
  You can use the token to specify the subscription when querying for subscription validity.
  
  <p><br><em>Supported only in In-app Billing API Version 2 and higher.</em></p></td>
</tr>
<tr>
  <td>developerPayload</td>
  <td>A developer-specified string that contains supplemental information about an order. You can
  specify a value for this field when you make a <code>REQUEST_PURCHASE</code> request.</td>
</tr>
</table>

<!--<h2 id="other-intents">Other Intents</h2> 

<p>The following Intents related to In-app Billing may be useful in your
implemention. </p> -->

<h3 id="http-api">REST API for subscriptions</h3>
<p>Google Play offers an HTTP-based API that you can use to remotely query the validity of a specific subscription at any time or cancel a subscription. The API is designed to be used from your backend servers as a way of securely managing subscriptions, as well as extending and integrating subscriptions with other services. See <a href="{@docRoot}google/play/billing/v2/billing_subscriptions.html#play-dev-api"> Google Play Android Developer API</a> for more information.</p>
