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-page.title=Android 2.3.3 Platform
-sdk.platform.version=2.3.3
-sdk.platform.apiLevel=10
-
-
-@jd:body
-
-<div id="qv-wrapper">
-<div id="qv">
-
-<h2>In this document</h2>
-<ol>
- <li><a href="#relnotes">Revisions</a></li>
- <li><a href="#api">API Overview</a></li>
- <li><a href="#api-level">API Level</a></li>
- <li><a href="#apps">Built-in Applications</a></li>
- <li><a href="#locs">Locales</a></li>
- <li><a href="#skins">Emulator Skins</a></li>
-</ol>
-
-<h2>Reference</h2>
-<ol>
-<li><a
-href="{@docRoot}sdk/api_diff/{@sdkPlatformApiLevel}/changes.html">API
-Differences Report &raquo;</a> </li>
-</ol>
-
-<h2>See Also</h2>
-<ol>
- <li><a href="{@docRoot}sdk/adding-components.html">Adding SDK Components</a></li>
-</ol>
-
-</div>
-</div>
-
-<p>
-<em>API Level:</em>&nbsp;<strong>{@sdkPlatformApiLevel}</strong></p>
-
-<p>Android 2.3.3 is a small feature release that adds several improvements
-and APIs to the Android 2.3 platform.</p>
-
-<p>For developers, the Android {@sdkPlatformVersion} platform is available as a
-downloadable component for the Android SDK. The downloadable platform includes
-an Android library and system image, as well as a set of emulator
-skins and more. The downloadable platform
-includes no external libraries.</p>
-
-<p>To get started developing or testing against Android
-{@sdkPlatformVersion}, use the Android SDK Manager to
-download the platform into your SDK. For more information,
-see <a href="{@docRoot}sdk/adding-components.html">Adding SDK
-Components</a>. If you are new to Android, <a
-href="{@docRoot}sdk/index.html">download the SDK Starter Package</a>
-first.</p>
-
-<p>For a high-level introduction to Android 2.3, see the <a
-href="{@docRoot}sdk/android-2.3-highlights.html">Platform Highlights</a>.</p>
-
-
-<h2 id="relnotes">Revisions</h2>
-
-<p>The sections below provide notes about successive releases of
-the Android {@sdkPlatformVersion} platform component for the Android SDK, as denoted by
-revision number. To determine what revision(s) of the Android
-{@sdkPlatformVersion} platforms are installed in your SDK environment, refer to
-the "Installed Packages" listing in the Android SDK and AVD Manager.</p>
-
-
-<div class="toggle-content opened" style="padding-left:1em;">
-
-<p><a href="#" onclick="return toggleContent(this)">
- <img src="{@docRoot}assets/images/triangle-opened.png"
-class="toggle-content-img" alt="" />
- Android {@sdkPlatformVersion}, Revision 2</a> <em>(July 2011)</em>
-</a></p>
-
-<div class="toggle-content-toggleme" style="padding-left:2em;">
-
-<dl>
-<dt>Dependencies:</dt>
-<dd>
-<p>Requires <a href="{@docRoot}sdk/tools-notes.html">SDK Tools r12</a> or
-higher.</p>
-</dd>
-<dt>Notes:</dt>
-<dd>
-<p>Improvements to the platform's rendering library to support the visual layout editor in the ADT
-Eclipse plugin. This revision allows for more drawing features in ADT and fixes several
-bugs in the previous rendering library. It also unlocks several editor features that were added in
-ADT 12.</p>
-</dd>
-</dl>
-
-</div>
-</div>
-
-<div class="toggle-content closed" style="padding-left:1em;">
-
-<p><a href="#" onclick="return toggleContent(this)">
- <img src="{@docRoot}assets/images/triangle-closed.png"
-class="toggle-content-img" alt="" />
- Android {@sdkPlatformVersion}, Revision 1</a> <em>(February 2011)</em>
-</a></p>
-
-<div class="toggle-content-toggleme" style="padding-left:2em;">
-<dl>
-<dt>Dependencies:</dt>
-<dd>
-<p>Requires SDK Tools r9 or higher.</p>
-</dd>
-</dl>
-
-</div>
-</div>
-
-
-<h2 id="api">API Overview</h2>
-
-<p>The sections below provide a technical overview of what's new for developers
-in {@sdkPlatformVersion}, including new features and changes in the framework
-API since the previous version.</p>
-
-<h3 id="nfc">Near Field Communications (NFC)</h3>
-
-<p>Android 2.3.3 provides improved and extended support for NFC, to allow
-applications to interact with more types of tags in new ways.</p>
-
-<p>A new, comprehensive set of APIs give applications read and write access
-to a wider range of standard tag technologies, including:</p>
-
-<ul>
-<li>NFC-A (ISO 14443-3A)</li>
-<li>NFC-B (ISO 14443-3B)</li>
-<li>NFC-F (JIS 6319-4)</li>
-<li>NFC-V (ISO 15693)</li>
-<li>ISO-DEP (ISO 14443-4)</li>
-<li>MIFARE Classic</li>
-<li>MIFARE Ultralight</li>
-<li>NFC Forum NDEF tags</li>
-</ul>
-
-<p>The platform also provides a limited peer-to-peer communication protocol
-and API. Foreground Activities can use the API to register an NDEF
-message that will get pushed to other NFC devices when they connect.</p>
-
-<p>Advanced tag dispatching now gives applications more control over how and
-when they are launched, when an NFC tag is discovered. Previously, the platform
-used a single-step intent dispatch to notify interested applications that a tag
-was discovered. The platform now uses a four-step process that enables the
-foreground application to take control of a tag event before it is passed to any
-other applications (<code>android.nfc.NfcAdapter.enableForegroundDispatch()</code>).
-
-The new dispatch process also lets apps listen for specific tag content and
-tag technologies, based on two new intent actions &mdash;
-<code>android.nfc.action.NDEF_DISCOVERED</code> and
-<code>android.nfc.action.TECH_DISCOVERED</code>.</p>
-
-<p>The NFC API is available in the {@link android.nfc} and
-{@link android.nfc.tech} packages. The key classes are: </p>
-
-<ul>
-<li>{@link android.nfc.NfcAdapter}, which represents the NFC hardware on the device.</li>
-<li>{@link android.nfc.NdefMessage}, which represents an NDEF data message,
-the standard format in which "records" carrying data are transmitted between
-devices and tags. An NDEF message certain many NDEF records of different types.
-Applications can receive these messages from
-{@link android.nfc.NfcAdapter#ACTION_NDEF_DISCOVERED NDEF_DISCOVERED},
-{@link android.nfc.NfcAdapter#ACTION_TECH_DISCOVERED TECH_DISCOVERED}, or
-{@link android.nfc.NfcAdapter#ACTION_TAG_DISCOVERED TAG_DISCOVERED} Intents.</li>
-<li>{@link android.nfc.NdefRecord}, delivered in an
-{@link android.nfc.NdefMessage}, which describes the type of data being shared
-and carries the data itself.</li>
-<li>{@link android.nfc.Tag}, which represents a tag scanned by the device.
-Multiple types of tags are supported, based on the underlying tag
-technology.</li>
-<li>{@link android.nfc.tech.TagTechnology}, an interface that gives applications
-access to tag properties and I/O operations based on the technologies present
-in the tag. For a full list of tag technologies supported in Android 2.3.3, see
-{@link android.nfc.tech}.</li>
-</ul>
-
-<p>NFC communication relies on wireless technology in the device hardware, and
-is not present in all Android devices. Android devices that do not support
-NFC will return a null object when
-{@link android.nfc.NfcAdapter#getDefaultAdapter(android.content.Context)
-getDefaultAdapter(Context)} is called, and
-<code>context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_NFC)</code>
-will return <code>false</code>. The NFC API is always present, however, regardless of
-underlying hardware support.</p>
-
-<p>To use the NFC API, applications must request permission from the user by
-declaring <code>&lt;uses-permission
-android:name="android.permission.NFC"&gt;</code> in their manifest files.</p>
-
-<p>Additionally, developers can request filtering on Google Play, such that
-their applications are not discoverable to users whose devices do not support
-NFC. To request filtering, add
-<code>&lt;uses-feature android:name="android.hardware.nfc"
-android:required="true"&gt;</code> to the application's manifest.</p>
-
-<p class="note">To look at sample code for NFC, see
-<a href="{@docRoot}resources/samples/NFCDemo/index.html">NFCDemo app</a>, <a href="{@docRoot}resources/samples/ApiDemos/src/com/example/android/apis/nfc/TechFilter.html">filtering by tag technology</a></li>, <a href="{@docRoot}resources/samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundDispatch.html">using foreground dispatch</a>, and <a href="{@docRoot}resources/samples/ApiDemos/src/com/example/android/apis/nfc/ForegroundNdefPush.html">foreground NDEF push (P2P)</a>.</p>
-
-<h3 id="bluetooth">Bluetooth</h3>
-
-<p>Android 2.3.3 adds platform and API support for Bluetooth nonsecure socket
-connections. This lets applications communicate with simple devices that may not
-offer a UI for authentication. See
-{@link android.bluetooth.BluetoothDevice#createInsecureRfcommSocketToServiceRecord(java.util.UUID)} and
-{@link android.bluetooth.BluetoothAdapter#listenUsingInsecureRfcommWithServiceRecord(java.lang.String, java.util.UUID)}
-for more information. </p>
-
-<h3 id="graphics">Graphics</h3>
-
-<ul>
-<li>A new {@link android.graphics.BitmapRegionDecoder} class lets applications
-decode a rectangle region from an image. The API is particularly useful when an
-original image is large and and the application only need parts of the image.
-</li>
-<li>A new {@link
-android.graphics.BitmapFactory.Options#inPreferQualityOverSpeed} field in {@link
-android.graphics.BitmapFactory.Options} allows applications to use a more accurate
-but slightly slower IDCT method in JPEG decode. This in turn improves the
-quality of the reconstructed image.</li>
-</ul>
-
-
-<h3 id="media">Media framework</h3>
-
-<ul>
-<li>A new {@link android.media.MediaMetadataRetriever} class provides a unified
-interface for retrieving frame and metadata from an input media file.</li>
-<li>{@link android.media.MediaRecorder.AudioEncoder} and {@link
-android.media.MediaRecorder.OutputFormat} include new fields for specifying AMR
-Wideband and AAC formats. </li>
-</ul>
-
-
-<h3 id="speech">Speech recognition</h3>
-
-<p>The speech-recognition API includes new constants to let you manage voice
-search results in new ways. Although the new constants are not needed for normal
-use of speech recognition, you could use them to offer a different view of voice
-search results in your application. For information, see {@link
-android.speech.RecognizerResultsIntent}.</p>
-
-
-<h2 id="api-level">API Level</h2>
-
-<p>The Android {@sdkPlatformVersion} platform delivers an updated version of
-the framework API. The Android {@sdkPlatformVersion} API
-is assigned an integer identifier &mdash;
-<strong>{@sdkPlatformApiLevel}</strong> &mdash; that is
-stored in the system itself. This identifier, called the "API Level", allows the
-system to correctly determine whether an application is compatible with
-the system, prior to installing the application. </p>
-
-<p>To use APIs introduced in Android {@sdkPlatformVersion} in your application,
-you need compile the application against the Android library that is provided in
-the Android {@sdkPlatformVersion} SDK platform. Depending on your needs, you might
-also need to add an <code>android:minSdkVersion="{@sdkPlatformApiLevel}"</code>
-attribute to the <code>&lt;uses-sdk&gt;</code> element in the application's
-manifest. If your application is designed to run only on Android 2.3 and higher,
-declaring the attribute prevents the application from being installed on earlier
-versions of the platform.</p>
-
-<p>For more information about how to use API Level, see the <a
-href="{@docRoot}guide/appendix/api-levels.html">API Levels</a> document. </p>
-
-<h2 id="apps">Built-in Applications</h2>
-
-<p>The system image included in the downloadable platform provides these
-built-in applications:</p>
-
-<table style="border:0;padding-bottom:0;margin-bottom:0;">
-<tr>
-<td style="border:0;padding-bottom:0;margin-bottom:0;">
-<ul>
-<li>Browser</li>
-<li>Calculator</li>
-<li>Camera</li>
-<li>Clock</li>
-<li>Contacts</li>
-<li>Cusom Locale</li>
-<li>Dev Tools</li>
-<li>Downloads</li>
-<li>Email</li>
-</ul>
-</td>
-<td style="border:0;padding-bottom:0;margin-bottom:0;padding-left:5em;">
-<ul>
-<li>Gallery</li>
-<li>IMEs for Japanese, Chinese, and Latin text input</li>
-<li>Messaging</li>
-<li>Music</li>
-<li>Phone</li>
-<li>Search</li>
-<li>Settings</li>
-<li>Spare Parts (developer app)</li>
-<li>Speech Recorder</li>
-</ul>
-</td>
-</tr>
-</table>
-
-
-<h2 id="locs" style="margin-top:.75em;">Locales</h2>
-
-<p>The system image included in the downloadable SDK platform provides a variety of
-built-in locales. In some cases, region-specific strings are available for the
-locales. In other cases, a default version of the language is used. The
-languages that are available in the Android {@sdkPlatformVersion} system
-image are listed below (with <em>language</em>_<em>country/region</em> locale
-descriptor).</p>
-
-<table style="border:0;padding-bottom:0;margin-bottom:0;">
-<tr>
-<td style="border:0;padding-bottom:0;margin-bottom:0;">
-<ul>
-<li>Arabic, Egypt (ar_EG)</li>
-<li>Arabic, Israel (ar_IL)</li>
-<li>Bulgarian, Bulgaria (bg_BG)</li>
-<li>Catalan, Spain (ca_ES)</li>
-<li>Czech, Czech Republic (cs_CZ)</li>
-<li>Danish, Denmark(da_DK)</li>
-<li>German, Austria (de_AT)</li>
-<li>German, Switzerland (de_CH)</li>
-<li>German, Germany (de_DE)</li>
-<li>German, Liechtenstein (de_LI)</li>
-<li>Greek, Greece (el_GR)</li>
-<li>English, Australia (en_AU)</li>
-<li>English, Canada (en_CA)</li>
-<li>English, Britain (en_GB)</li>
-<li>English, Ireland (en_IE)</li>
-<li>English, India (en_IN)</li>
-<li>English, New Zealand (en_NZ)</li>
-<li>English, Singapore(en_SG)</li>
-<li>English, US (en_US)</li>
-<li>English, South Africa (en_ZA)</li>
-<li>Spanish (es_ES)</li>
-<li>Spanish, US (es_US)</li>
-<li>Finnish, Finland (fi_FI)</li>
-<li>French, Belgium (fr_BE)</li>
-<li>French, Canada (fr_CA)</li>
-<li>French, Switzerland (fr_CH)</li>
-<li>French, France (fr_FR)</li>
-<li>Hebrew, Israel (he_IL)</li>
-<li>Hindi, India (hi_IN)</li>
-</ul>
-</td>
-<td style="border:0;padding-bottom:0;margin-bottom:0;padding-left:5em;">
-<li>Croatian, Croatia (hr_HR)</li>
-<li>Hungarian, Hungary (hu_HU)</li>
-<li>Indonesian, Indonesia (id_ID)</li>
-<li>Italian, Switzerland (it_CH)</li>
-<li>Italian, Italy (it_IT)</li>
-<li>Japanese (ja_JP)</li>
-<li>Korean (ko_KR)</li>
-<li>Lithuanian, Lithuania (lt_LT)</li>
-<li>Latvian, Latvia (lv_LV)</li>
-<li>Norwegian-Bokmol, Norway(nb_NO)</li>
-<li>Dutch, Belgium (nl_BE)</li>
-<li>Dutch, Netherlands (nl_NL)</li>
-<li>Polish (pl_PL)</li>
-<li>Portuguese, Brazil (pt_BR)</li>
-<li>Portuguese, Portugal (pt_PT)</li>
-<li>Romanian, Romania (ro_RO)</li>
-<li>Russian (ru_RU)</li></li>
-<li>Slovak, Slovakia (sk_SK)</li>
-<li>Slovenian, Slovenia (sl_SI)</li>
-<li>Serbian (sr_RS)</li>
-<li>Swedish, Sweden (sv_SE)</li>
-<li>Thai, Thailand (th_TH)</li>
-<li>Tagalog, Philippines (tl_PH)</li>
-<li>Turkish, Turkey (tr_TR)</li>
-<li>Ukrainian, Ukraine (uk_UA)</li>
-<li>Vietnamese, Vietnam (vi_VN)</li>
-<li>Chinese, PRC (zh_CN)</li>
-<li>Chinese, Taiwan (zh_TW)</li>
-</td>
-</tr>
-</table>
-
-<p class="note"><strong>Note:</strong> The Android platform may support more
-locales than are included in the SDK system image. All of the supported locales
-are available in the <a href="http://source.android.com/">Android Open Source
-Project</a>.</p>
-
-<h2 id="skins">Emulator Skins</h2>
-
-<p>The downloadable platform includes a set of emulator skins that you can use
-for modeling your application in different screen sizes and resolutions. The
-emulator skins are:</p>
-
-<ul>
- <li>
- QVGA (240x320, low density, small screen)
- </li>
- <li>
- WQVGA400 (240x400, low density, normal screen)
- </li>
- <li>
- WQVGA432 (240x432, low density, normal screen)
- </li>
- <li>
- HVGA (320x480, medium density, normal screen)
- </li>
- <li>
- WVGA800 (480x800, high density, normal screen)
- </li>
- <li>
- WVGA854 (480x854 high density, normal screen)
- </li>
-</ul>
-
-<p>For more information about how to develop an application that displays
-and functions properly on all Android-powered devices, see <a
-href="{@docRoot}guide/practices/screens_support.html">Supporting Multiple
-Screens</a>.</p>