Android判断网络类型以及监控网络状态

 1 import com.qdsj.hxcmjj.activity.MainActivity;
 2 
 3 import android.app.Service;
 4 import android.content.BroadcastReceiver;
 5 import android.content.Context;
 6 import android.content.Intent;
 7 import android.content.IntentFilter;
 8 import android.net.ConnectivityManager;
 9 import android.net.NetworkInfo;
10 import android.os.IBinder;
11 
12 public class NetMonitorService extends Service {
13 
14     
15     
16     private ConnectivityManager connectivityManager;
17     private NetworkInfo info;
18 
19     private BroadcastReceiver mReceiver = new BroadcastReceiver() {
20 
21         @Override
22         public void onReceive(Context context, Intent intent) {
23             String action = intent.getAction();
24             if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {
25                 System.out.println("网络状态已经改变");
26                 connectivityManager = (ConnectivityManager)getSystemService(Context.CONNECTIVITY_SERVICE);
27                 info = connectivityManager.getActiveNetworkInfo();  
28                 if(info != null && info.isAvailable()) {
29                     System.out.println("网络连接");
30                     context.startActivity(new Intent(context,MainActivity.class).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK));
31                 } else {
32                     System.out.println("网络断开");
33                 }
34             }
35         }
36     };
37 
38 
39     @Override
40     public IBinder onBind(Intent intent) {
41         return null;
42     }
43 
44     @Override
45     public void onCreate() {
46         super.onCreate();
47          IntentFilter mFilter = new IntentFilter();
48             mFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
49             registerReceiver(mReceiver, mFilter);
50             System.out.println("开启网络监听服务");
51     }
52     
53     
54     
55      @Override
56         public void onDestroy() {
57             super.onDestroy();
58             unregisterReceiver(mReceiver);
59         }
60 
61         @Override
62         public int onStartCommand(Intent intent, int flags, int startId) {
63             return super.onStartCommand(intent, flags, startId);
64         }
65 
66     
67     
68     
69 }