判断当前网络是否为 Wifi 网络

/**  * 判断当前网络是否为 Wifi 网络连接  * @param context  * @return  */  private static boolean WifiConnected(Context context) {      ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);      NetworkInfo activeNetInfo = connectivityManager.getActiveNetworkInfo();      if (activeNetInfo != null && activeNetInfo.getType() == ConnectivityManager.TYPE_WIFI) {          return true;      }      return false;  }

判断当前是否有网络连接

/** * 判断当前是否有网络连接 * @param context * @return */public boolean NetworkConnected(Context context) {    ConnectivityManager connectivityManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);    NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();    if (networkInfo != null && networkInfo.isAvailable()){   // 判断网络连接是否打开        return networkInfo.isConnected();    }    return false;}