问离子型插件BLE (以及所有其他插件)不是函数错误\ Ionic4和角7。

EN

ionic cordova plugin add cordova-plugin-ble-central
npm install @ionic-native/ble

import { BLE } from '@ionic-native/ble/ngx';

    @NgModule({
  declarations: [
    MyApp,
    AboutPage,
    ContactPage,
    HomePage,
    TabsPage
  ],
  imports: [
    BrowserModule,
    IonicModule.forRoot(MyApp)
  ],
  bootstrap: [IonicApp],
  entryComponents: [
    MyApp,
    AboutPage,
    ContactPage,
    HomePage,
    TabsPage
  ],
  providers: [
    StatusBar,
    SplashScreen,
    {provide: ErrorHandler, useClass: IonicErrorHandler},
    BLE <------- Add this BLE on providers
  ]
})

    import { Component, OnInit } from '@angular/core';
import { NavController } from 'ionic-angular';
import { BLE } from '@ionic-native/ble/ngx';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage implements OnInit{

  constructor(
    public navCtrl: NavController,
    public ble: BLE
    ) {

  }

  ngOnInit() {
    this.ble.startScan([]).subscribe(device => {
      console.log(JSON.stringify(device));
      debugger;
    });

    setTimeout(() => {
      this.ble.stopScan();
    }, 5000);
  }

}