1 page.title=Determining and Monitoring the Connectivity Status 2 parent.title=Optimizing Battery Life 3 parent.link=index.html 4 5 trainingnavtop=true 6 7 previous.title=Determining and Monitoring the Docking State and Type 8 previous.link=docking-monitoring.html 9 next.title=Manipulating Broadcast Receivers On Demand 10 next.link=manifest-receivers.html 11 12 @jd:body 13 14 <div id="tb-wrapper"> 15 <div id="tb"> 16 17 <h2> </h2> 18 <ol> 19 <li><a href="#DetermineConnection"> </a></li> 20 <li><a href="#DetermineType"> </a></li> 21 <li><a href="#MonitorChanges"> </a></li> 22 </ol> 23 24 25 <h2> </h2> 26 <ul> 27 <li><a href="{@docRoot}guide/components/intents-filters.html"> </a> 28 </ul> 29 30 </div> 31 </div> 32 33 <p> , . , .</p> 34 35 <p> {@link android.net.ConnectivityManager}.</p> 36 37 38 <h2 id="DetermineConnection"> </h2> 39 40 <p> , . , {@link android.net.ConnectivityManager} .</p> 41 42 <pre>ConnectivityManager cm = 43 (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); 44 45 NetworkInfo activeNetwork = cm.getActiveNetworkInfo(); 46 boolean isConnected = activeNetwork.isConnectedOrConnecting();</pre> 47 48 49 <h2 id="DetermineType"> </h2> 50 51 <p> .</p> 52 53 <p> , WiMAX, Wi-Fi Ethernet. , , .</p> 54 55 <pre>boolean isWiFi = activeNetwork.getType() == ConnectivityManager.TYPE_WIFI;</pre> 56 57 <p> , , , Wi-Fi, . : , Wi-Fi.</p> 58 59 <p> , , .</p> 60 61 62 <h2 id="MonitorChanges"> </h2> 63 64 <p>{@link android.net.ConnectivityManager} {@link android.net.ConnectivityManager#CONNECTIVITY_ACTION} ({@code "android.net.conn.CONNECTIVITY_CHANGE"}) . , ( ) .</p> 65 66 <pre><action android:name="android.net.conn.CONNECTIVITY_CHANGE"/></pre> 67 68 <p> Wi-Fi. , . , , , .</p> 69 70 <p> , . , .</p> 71
