LTE, WIFI, Network 체크

public static boolean checkWifi(Context context) {
  boolean rtn = false;

  ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);
  NetworkInfo ni         = cm.getActiveNetworkInfo();

  if(ni != null) {
    if(ni.getType() == ConnectivityManager.TYPE_WIFI) {
      rtn = ni.isConnected();
    }
  }

  return rtn;
}

public static boolean checkLTE(Context context) {
  boolean rtn = false;

  ConnectivityManager cm = (ConnectivityManager) context.getSystemService(context.CONNECTIVITY_SERVICE);
  NetworkInfo ni         = cm.getActiveNetworkInfo();

  if(ni != null) {
    if(ni.getType() == ConnectivityManager.TYPE_MOBILE) {
      rtn = ni.isConnected();
    }
  }

  return rtn;
}

public static boolean checkNetwork(Context context) {
  boolean rtn = false;

  if(checkLTE(context) || checkWifi(context)) {
    rtn = true;
  } else {
    rtn = false;
  }

  return rtn;
}