判断有网没网 识别WiFi在线

判断有网没网

 /**
     * Check whether the device is connected, and if so, whether the connection
     * is wifi or mobile (it could be something else).
     */
    private void checkNetworkConnection() {
      // BEGIN_INCLUDE(connect)
      ConnectivityManager connMgr =
          (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
      NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();
      if (activeInfo != null && activeInfo.isConnected()) {
          wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
          mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
          if(wifiConnected) {
              Log.i(TAG, getString(R.string.wifi_connection));
          } else if (mobileConnected){
              Log.i(TAG, getString(R.string.mobile_connection));
          }
      } else {
          Log.i(TAG, getString(R.string.no_wifi_or_mobile));
      }
      // END_INCLUDE(connect)
    }