收听网络状态广播

 1 package com.jingle.networkbroadcast.receiver;
 2 
 3 import com.jingle.networkbroadcast.util.LogUtil;
 4 
 5 import android.content.BroadcastReceiver;
 6 import android.content.Context;
 7 import android.content.Intent;
 8 import android.net.ConnectivityManager;
 9 import android.net.NetworkInfo;
10 import android.os.Bundle;
11 
12 public class NetworkStateReceiver extends BroadcastReceiver {
13 
14     @Override
15     public void onReceive(Context context, Intent intent) {
16         // TODO Auto-generated method stub
17         Bundle bundle = intent.getExtras();
18         String content;
19         //打印传进来的bundle信息
20         for (String key : bundle.keySet()) {
21             if ((content = bundle.getString(key)) != null) {
22                 LogUtil.getDebugLog("key: " + key + " content: " + content);
23                 LogUtil.getDevider();
24             }
25         }
26         LogUtil.getInfoLog("network state changed");
27         if (!isNetworkAvailable(context)) {
28             LogUtil.getInfoLog("网络失去连接");
29         }
30 
31     }
32 
33     public static boolean isNetworkAvailable(Context context) {
34         ConnectivityManager connMng = (ConnectivityManager) context
35                 .getSystemService(Context.CONNECTIVITY_SERVICE);
36         NetworkInfo infos[] = connMng.getAllNetworkInfo();
37         if (infos != null) {
38             for (NetworkInfo info : infos) {
39                 //只要networkinfo中有状态为connected就返回true,否则返回false
40                 if (info.getState() == NetworkInfo.State.CONNECTED) {
41                     return true;
42                 }
43             }
44         }
45         return false;
46     }
47 
48 }