android网络监测

public static boolean isNetworkConnected(Context context)

{

if (context != null) {

ConnectivityManager mConnectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();

if (mNetworkInfo != null) {

netConnectType = mNetworkInfo.getType();

if(netConnectType == ConnectivityManager.TYPE_WIFI)

{ //wifi

m_preConnectNetType = ConnectivityManager.TYPE_WIFI;

}

else if(netConnectType == ConnectivityManager.TYPE_ETHERNET)

{ //以太网

m_preConnectNetType = ConnectivityManager.TYPE_ETHERNET;

}

else if(netConnectType==ConnectivityManager.TYPE_MOBILE)

{  //3g网卡

m_preConnectNetType = ConnectivityManager.TYPE_MOBILE;

}

return mNetworkInfo.isAvailable();

}

}

return false;

}