此插件nativescript-bluetooth不显示任何真实设备

Question

我正在使用插件nativescript-bluetooth，我想显示设备。 我尝试了这段代码，但对我来说却行不通。

Component.ts

export class ItemsComponent implements OnInit {
    log: string = "";
    constructor(private zone: NgZone) { }
    ngOnInit(): void {
    }
    startScanning() {
         bluetooth.startScanning({
            serviceUUIDs: [],
            seconds: 5,
            onDiscovered: (peripheral) => {
                console.log(peripheral)
                 this.zone.run(() => {
                     this.updateLog(`Device Name: ${peripheral.name}`);
                  })
                if (peripheral.name == "SWING") {
                    this.stopScanning();
                    this.updateLog(`Device Name: ${peripheral.name}`);
                }
            }
        }).then(() => {
            this.updateLog("scanning completed");
        }, (err) => {
            console.error(`Error on scanning: ${err}`);
        })
    }
     stopScanning() {
        bluetooth.stopScanning().then(() => {
            this.updateLog("Stopped");
        })
    }
     updateLog(message) {
        console.log(message);
        this.log += `\n${message}`;
    }
}

Component.html

<StackLayout>
    <Button class="btn btn-primary btn-active" id="appButton" text="Search Device" (tap)="startScanning()"></Button>
    <TextView text="{{ log }}" style="height: 100%;background-color: #282a37;color: #fff;" editable="false"></TextView>
</StackLayout>

请，您能问我任何想法，为什么此代码不起作用，还是可以发布任何有效的示例？

我需要您的支持！ thnx