I followed the Bluetooth tutorial but stucked at section “Enabling and Disabling Bluetooth”.

The codes are：

   ......
   app_control_set_operation(service, "APP_CONTROL_OPERATION_SETTING_BT_ENABLE");
   ret = app_control_send_launch_request(service, NULL, NULL);

   app_control_destroy(service);
   if (ret == APP_CONTROL_ERROR_NONE) 
   {
      dlog_print(DLOG_INFO, LOG_TAG, "Succeeded to Bluetooth On/Off app!\n");

      return 0;
   } 
   else 
   {
      dlog_print(DLOG_INFO, LOG_TAG, "Failed to relaunch Bluetooth On/Off app!\n");

      return -1;
   }

but I got the value of ret is -17825759, which is APP_CONTROL_ERROR_APP_NOT_FOUND.

And I do not find definition in app_control.h for APP_CONTROL_OPERATION_SETTING_BT_ENABLE, and above codes even use it directly as a string.

Apparently, the implementation has been changed, but the tutorial are not updated.

Who know how to Enabling and Disabling Bluetooth now?