code: public static boolean changeWirelessState(boolean state) {
          try {
              WifiManager wifi = (WifiManager) QuickUtils.getContext().getSystemService(Context.WIFI_SERVICE);
              wifi.setWifiEnabled(state);
              return true;
          } catch (Exception e) {
              return false;
          }
      }
docs: Set wireless connectivity On, also this method will need the permissions
  "android.permission.CHANGE_WIFI_STATE" and
  "android.permission.ACCESS_WIFI_STATE"
  
  @param state   - set enable or disable wireless connection
  @return true if was set successfully and false if it wasn't