React-native-ble-plx: new BleManager() failed on componentWillMount

[haohcraft]

In my own component below, I try to play with the ble but get some error:

undefined is not an object (evaluating 'BleModule.createClient')

Looks like in BleManager.js, it can not import BleModule. Any idea?

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

export default class Discover extends Component {

    constructor(props) {
      super(props);

      this.state = {
        device: { id: '', name: '' },
        scanning: false
      };
    }
    componentWillMount() {
        this.manager = new BleManager();
        this.subscriptions = {}
        this.manager.onStateChange((newState) => {
          console.log("State changed: " + newState)
        });
    }
    componentDidUpdate(prevProps, prevState) {
        if (this.state.scanning) {
            this.manager.startDeviceScan(null, null, (error, device) => {
                if (!error) {
                    console.log("Found device: ", device);
                    this.setState({
                        device,
                        scanning: false
                    })
                }
            });
        }

    }
    componentWillUnmount() {
        this.manager.destroy();
        delete this.manager;
    }
    render() {
        const { device } = this.state;
        return (
            <View style={{ flex: 1, justifyContent: 'center' }}>
                <Text>
                  {device.id} -- {device.name}
                </Text>
                <ButtonView
                    onClick={this._startScan.bind(this)}
                    text={'Start scanning'}
                    color={'#beffc6'}/>

            </View>
        );
    }
    _startScan() {
        this.setState({ scanning: true });
    }
};

[haohcraft]

I have resolved this. It was due to a bad configuration on my side.

[JordanKlaers]

what was the correct configuration? I am having the same issue and am having trouble understanding it.

[Benjamin-Lin-X]

I am having the same issue while using expo too. Please tell me how to fix it.

[Benjamin-Lin-X]

@haohcraft I am having the same issue while using expo too. Please tell me how to fix it.

[brancooo1]

Guys, to solve it, just go through the whole manual installation of ble-plx
https://github.com/Polidea/react-native-ble-plx#manually
Make sure, from point 1, that everything is as it should be by documentation.

It'll work ;)