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      1 <p>
      2   Near-field Communication or NFC is a standard defined by the
      3   <a href=http://www.nfc-forum.org/home>NFC Forum
      4   </a>.
      5   NFC Data Exchange Format (NDEF) defines a common data format between NFC-compliant devices and tags.
      6   This demo application shows how to read a NDEF Tags using using Android 2.3 SDK APIs.
      7   The NFC Tags consist of data encoded in NDEF Message format specified by NFC Forum Type 2 Specification.
      8   Each NDEF message consists of one or more NDEF Records.
      9 
     10   You need a NFC compliant device and a NFC compliant Tag to use this sample app. Or else, you could use
     11   the FakeTagsActivity displayed at launch of this sample app, to generate fake Tag broadcasts from the emulator.
     12 </p>
     13 
     14 <p>The application includes:
     15 </p>
     16   <ul>
     17     <li>
     18       <a href="src/com/example/android/nfc/TagViewer.html">
     19         <code>TagViewer
     20         </code>
     21       </a>
     22       &mdash; an
     23       <code>Activity
     24       </code> that handles a broadcast of a new tag that the device
     25       just discovered, parses it, and displays its record contents in a
     26       <code>ListActivity
     27       </code>
     28     </li>
     29     <li>
     30       <a href="src/com/example/android/nfc/NdefMessageParser.html">
     31         <code> NdefMessageParser
     32         </code>
     33       </a>
     34       &mdash; parses the record type of records within the NDEF message.
     35     </li>
     36     <li>
     37       <a href="src/com/example/android/nfc/record/ParsedNdefRecord.html">
     38         <code>ParsedNdefRecord
     39         </code>
     40       </a>
     41       &mdash; an interface implemented by all parsed NdefRecord types.
     42     </li>
     43     <li>
     44       <a href="src/com/example/android/nfc/record/SmartPoster.html">
     45         <code>SmartPoster
     46         </code>
     47       </a>
     48       &mdash; a representation of an NFC Forum Smart Poster Record Type.
     49     </li>
     50     <li>
     51       <a href="src/com/example/android/nfc/record/TextRecord.html">
     52         <code>TextRecord
     53         </code>
     54       </a>
     55       &mdash; a representation of an NFC Forum Text Record Type.
     56     </li>
     57     <li>
     58       <a href="src/com/example/android/nfc/record/UriRecord.html">
     59         <code>UriRecord
     60         </code>
     61       </a>
     62       &mdash; a representation of an NFC Forum Uri Record Type.
     63     </li>
     64     <li>
     65       <a href="src/com/example/android/nfc/simulator/FakeTagsActivity.html">
     66         <code>FakeTagsActivity
     67         </code>
     68       </a>
     69       &mdash; A activity that launches tags as if they had been scanned.
     70       This is useful if you don't have access to NFC enabled device or tag.
     71     </li>
     72     <li>
     73       <a href="src/com/example/android/nfc/simulator/MockNdefMessages.html">
     74         <code>MockNdefMessages
     75         </code>
     76       </a>
     77       &mdash; this class provides a list of fake NFC Ndef format Tags.
     78     </li>
     79 
     80   </ul>
     81 <p>If you are developing an application that uses the NFC API, remember that the feature
     82   is supported only on Android 2.3 (API level 9) and higher versions of the platform. Also,
     83   among devices running Android 2.3 (API level 9) or higher, not all devices will offer NFC
     84   support. To ensure that your application can only be installed on devices that are capable
     85   of supporting NFC, remember to add the following to the application's manifest before
     86   publishing to Android Market:
     87 </p>
     88 <ul>
     89   <li>
     90     <code>&lt;uses-sdk android:minSdkVersion="9" /&gt;
     91     </code>,
     92     which indicates to Android Market and the platform that your application requires
     93     Android 2.3 or higher. For more information, see
     94     <a href="../../../guide/appendix/api-levels.html">API Levels
     95     </a>
     96     and the documentation for the
     97     <a href="../../../guide/topics/manifest/uses-sdk-element.html">
     98       <code>&lt;uses-sdk&gt;
     99       </code>
    100     </a> element.
    101   </li>
    102 </ul>
    103 <p>To control how Android Market filters your application
    104   from devices that do not support NFC, remember to add the following to the application's manifest
    105   <ul>
    106     <li>
    107       <code>&lt;uses-feature android:name="android.hardware.nfc" /&gt;
    108       </code>,
    109       which tells Android Market that your application uses the NFC API. The declaration
    110       should include an
    111       <code>android:required
    112       </code> attribute that indicates whether you want
    113       Android Market to filter the application from devices that do not offer NFC support. Other
    114       <code>&lt;uses-feature&gt;
    115       </code> declarations may also be needed, depending on your
    116       implementation. For more information, see the documentation for the
    117       <a href="../../../guide/topics/manifest/uses-feature-element.html">
    118         <code>&lt;uses-feature&gt;
    119         </code>
    120       </a> element.
    121     </li>
    122   </ul>
    123 <p>For more information about using the NFC API, see the
    124   <a href="../../../reference/android/nfc/package-summary.html">
    125     <code>android.nfc</code>
    126     </a>
    127    documentation.
    128 </p>
    129 <img alt="" src="../images/NfcDemo.png"/>
    130