Androidはネットワーク接続状態の変化を傍受する

else if(action.equals(ConnectivityManager.CONNECTIVITY_ACTION)){
            	System.out.println("network status changed!!!");
            	
        				// TODO Auto-generated method stub
        				NetworkInfo mobNetInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        				NetworkInfo wifiNetInfo = mConnectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        				
        				if(!mobNetInfo.isConnected() && !wifiNetInfo.isConnected() 
        						&& mpreference.getBoolean(mresources.getString(R.string.key_gprs_swith), false)
        						){
        					//connect our network
        					beginConnectGprs();
        					
        				}