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