Android中判断网络状态及其种类

2015/02/14 34411

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/**
 * a tool used for judge the network's status
 * @author liyangchao
 *
 */ 
public class NetWorkTools{ 
   
    public static booleanisWifi(Context paramContext) { 
   
        return "2".equals(getNetType(paramContext)[0]); 
   
    } 
   
    public static booleanisMobile(Context paramContext) { 
   
        return "1".equals(getNetType(paramContext)[0]); 
   
    } 
   
    public static booleanisNetAvailable(Context paramContext) { 
   
        if ("1".equals(getNetType(paramContext)[0]) 
   
        || "2".equals(getNetType(paramContext)[0])) { 
   
            return true; 
   
        } 
   
        return false; 
   
    } 
   
    // public static booleanisNetworkAvailable(Context context) { 
   
    // ConnectivityManager mgr = 
    // (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); 
   
    // NetworkInfo[] info =mgr.getAllNetworkInfo(); 
   
    // if (info != null) { 
   
    // for (int i = 0; i < info.length; i++) { 
   
    // if (info[i].getState() ==NetworkInfo.State.CONNECTED) { 
   
    // return true; 
   
    // } 
   
    // } 
   
    // } 
   
     // return false; 
   
    // } 
   
    public static String[] getNetType(Context paramContext) { 
   
        String[] arrayOfString = { "Unknown", "Unknown" }; 
   
        PackageManager localPackageManager = paramContext.getPackageManager(); 
   
        if (localPackageManager.checkPermission( 
   
        "android.permission.ACCESS_NETWORK_STATE", 
   
        paramContext.getPackageName()) != 0) { 
   
            arrayOfString[0] = "Unknown"; 
   
            return arrayOfString; 
   
        } 
   
        ConnectivityManager localConnectivityManager = (ConnectivityManager) paramContext 
   
        .getSystemService("connectivity"); 
   
        if (localConnectivityManager == null) { 
   
            arrayOfString[0] = "Unknown"; 
   
            return arrayOfString; 
   
        } 
   
        NetworkInfo localNetworkInfo1 = localConnectivityManager 
   
        .getNetworkInfo(1); 
   
        if (localNetworkInfo1 != null 
   
        && localNetworkInfo1.getState() == NetworkInfo.State.CONNECTED) { 
   
            arrayOfString[0] = "2"; 
   
            return arrayOfString; 
   
        } 
   
        NetworkInfo localNetworkInfo2 = localConnectivityManager 
   
        .getNetworkInfo(0); 
   
        if (localNetworkInfo2 != null 
   
        && localNetworkInfo2.getState() == NetworkInfo.State.CONNECTED) { 
   
            arrayOfString[0] = "1"; 
   
            arrayOfString[1] = localNetworkInfo2.getSubtypeName(); 
   
            return arrayOfString; 
   
        } 
   
        return arrayOfString; 
   
    } 
   
}