50 lines
3.7 KiB
HTML
50 lines
3.7 KiB
HTML
<p>This is a demo application highlighting how to make peer to peer network connections with
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the Wi-Fi Direct APIs. The application allows you to transfer jpeg images from the gallery after a succesful connection.</p>
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<p>The source code for this demo app shows how to accomplish three key things
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with Wi-Fi Direct APIs: Discovering peers, connecting using Wi-Fi Direct APIs, and finding group details post connection, so that a
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TCP socket can be opened to transfer files.</p>
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<p>The application includes:<p>
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<ul> <li><a
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href="src/com/example/android/wifidirect/WiFiDirectActivity.html"><code>WiFiDirectActivity</code></a>
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— the main <code>Activity</code> that contains two fragments to handle app's UI and peer lifecycle. It also registers a broadcast receiver for Wi-Fi Direct related events.</li> <li><a
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href="src/com/example/android/wifidirect/WiFiDirectBroadcastReceiver.html"><code>
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WiFiDirectBroadcastReceiver</code></a> — a <code>BroadcastReceiver</code>
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that listens for Wi-Fi Direct related events and passes them to
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<code>WiFiDirectActivity</code> and it's fragments for neccesary action.</li> <li><a
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href="src/com/example/android/wifidirect/DeviceListFragment.html"><code>DeviceListFragment</code></a>
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— a <code>ListFragment</code> that displays available peers and their status. </li>
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<li><a href="src/com/example/android/wifidirect/DeviceDetailFragment.html"><code>DeviceDetailFragment</code></a>
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— a <code>Fragment</code> that displays the details of the selected device and also drives the connection, disonnection and data transfer functionality of the demo. </li>
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<li><a href="src/com/example/android/wifidirect/FileTransferService.html"><code>FileTransferService</code></a>
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— an <code>IntentService</code> that services file transfer requests from the application by using TCP sockets. </li> </ul>
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<p>If you are developing an application that uses the Wi-Fi Direct APIs, remember that the
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feature is supported only on Android 4.0 (API level 14) and higher versions of
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the platform. To ensure that your application can only
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be installed on devices that are capable of supporting Wi-Fi Direct mode, remember to add the
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following to the application's manifest before publishing to Google Play:</p>
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<ul> <li><code><uses-sdk android:minSdkVersion="14" /></code>, which
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indicates to Google Play and the platform that your application requires
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Android 4.0 or higher. For more information, see <a
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href="../../../guide/appendix/api-levels.html">API Levels</a> and the
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documentation for the <a
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href="../../../guide/topics/manifest/uses-sdk-element.html"><code><uses-sdk></code></a>
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element.</li> </ul> <p>To control how Google Play filters your application
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from devices that do not support Wi-Fi Direct mode, remember to add the following to the
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application's manifest <ul> <li><code><uses-feature
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android:name="android.hardware.wifi.direct" /></code>, which tells Google
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Play that your application uses the Wi-Fi Direct API. The declaration should include
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an <code>android:required</code> attribute that indicates whether you want
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Google Play to filter the application from devices that do not offer Wi-Fi Direct support. Other <code><uses-feature></code> declarations may also be
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needed, depending on your implementation. For more information, see the
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documentation for the <a
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href="../../../guide/topics/manifest/uses-feature-element.html"><code><uses-feature></code></a>
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element.</li> </ul>
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<p>For more information about using the Wi-Fi Direct API, see the <a
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href="../../../reference/android/net/wifi/p2p/package-summary.html"><code>android.net.wifi.p2p </a></code>
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documentation. </p>
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<img alt="" src="../images/WifiDirect.png" />
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