react-native-ble-plx not detecting all nearby devices

Asked May 18 '20 at 18:33

Active May 18 '20 at 18:33

Viewed 1,864 times

import {BleManager} from 'react-native-ble-plx';

const DeviceManager = new BleManager();

export const scan = function scan() {
    const subscription = DeviceManager.onStateChange((state) => {
        if (state === 'PoweredOn') {
          DeviceManager.startDeviceScan(null, null, (error, device) => {
            if (error) {
              console.log("error",error);
            }
            if (device !== null) {
                console.log("device found ----> [id,name]", device.id, device.name);
            }
          });
          subscription.remove();
        }
    }, true);
}

This is my code to scan for nearby devices. When I run the app, only my laptop is detected although there are other nearby devices (phones that support Bluetooth LE) with Bluetooth turned on.

Also for my laptop, only the device id is shown, and the device name is shown as null.

Is my code missing something to detect all nearby devices and all the data of detected devices?

asked May 18 '20 at 18:33

JayaniH

Do your nearby devices perform an advertising? – Christopher May 18 '20 at 18:35
I don't get what you mean by that. – JayaniH May 18 '20 at 18:45
1

With a ble scan, you can only find devices which do a ble advertising. Your e.g. laptop does this. For testing you can install nrf connect app on one of your nearby devices and start an advertising. – Christopher May 18 '20 at 18:57
do you fine solutions for that – Mohamd Almhde Oct 25 '20 at 08:54
1

@MohamdAlmhde I did not find a solution for this. I instead used Java to manage bluetooth functionalities. – JayaniH Nov 24 '20 at 11:59

react-native-ble-plx not detecting all nearby devices

0 Answers0