Opentok Publisher.publishVideo函数在移动设备上的离子Cordova应用程序上不起作用

如何解决Opentok Publisher.publishVideo函数在移动设备上的离子Cordova应用程序上不起作用

我创建了一个离子应用程序，其中我正在使用opentok api进行视频通话。一切正常。我使用Publisher.publishVideo（）函数实现了打开和关闭摄像头的功能，与我使用Publisher.publishAudio（）实现麦克风的静音和取消静音功能的方法相同。

问题是publishAudio（）工作正常。但publishVideo（）可在网络上使用，而不能在android和ios等其他平台上使用。

这是一些代码段

我的HTML：

<ion-col
  size="1.5"
  style="background-color: rgb(48,47,47); text-align: right;"
>
  <fa-icon
    *ngIf="Video"
    (click)="EnabledisableVideo()"
    [icon]="['fas','video']"
    style="font-size: 30px;"
    [styles]="{'stroke': 'white','color': 'white'}"
  ></fa-icon>
  <fa-icon
    *ngIf="!Video"
    (click)="EnabledisableVideo()"
    [icon]="['fas','video-slash']"
    style="font-size: 30px;"
    [styles]="{'stroke': 'white','color': 'white'}"
  ></fa-icon>
</ion-col>
<ion-col
  size="1.5"
  style="background-color: rgb(48,47); text-align: right;"
>
  <fa-icon
    *ngIf="Micr"
    (click)="EnabledisableAudio()"
    [icon]="['fas','microphone-alt']"
    style="font-size: 30px;"
    [styles]="{'stroke': 'white','color': 'white'}"
  ></fa-icon>
  <fa-icon
    *ngIf="!Micr"
    (click)="EnabledisableAudio()"
    [icon]="['fas','microphone-alt-slash']"
    style="font-size: 30px;"
    [styles]="{'stroke': 'white','color': 'white'}"
  ></fa-icon>
</ion-col>

我的JavaScript功能禁用音频和视频：

import { QuickNotesPage } from "../quick-notes/quick-notes.page";
import {
  ModalController,NavParams,ActionSheetController,AlertController,NavController,Platform,Events,} from "@ionic/angular";
import { ServicePrescriptionPage } from "../service-prescription/service-prescription.page";
import { EPrescriptionPage } from "../eprescription/eprescription.page";
import { TelemedicineTipsPage } from "../telemedicine-tips/telemedicine-tips.page";
import { ActivatedRoute,Router } from "@angular/router";
import { Component,OnInit,ViewChild,ngzone } from "@angular/core";
import { IonContent } from "@ionic/angular";
import { ActionPage } from "../action/action.page";
import { Telemedicineservice } from "../telemedicine.service";
import { IdleService } from "src/app/services/idle.service";
declare var OT: any;
@Component({
  selector: "app-video-call",templateUrl: "./video-call.page.html",styleUrls: ["./video-call.page.scss"],})
export class VideoCallPage implements OnInit {
  @ViewChild("content") private content: any;
  session: any;

  subscriber: any;
  publisher: any;
  apiKey: any;
  sessionId: string;
  token: string;
  UserType;
  Msgs = [];
  Msg;
  Telemedicine_Request_ID;
  Call = true;
  Video = true;
  Micr = true;
  attach: string;
  action: any;
  setting;
  data;
  cTime;
  countDownTime = 0;
  distance = 0;
  minutes1 = 0;
  minutes;
  seconds1 = 0;
  seconds;
  interval = undefined;
  File1;
  formData;
  AlertMsg;
  title = "SIMPLYMEDBOOKING";
  inBounds = true;
  edge = {
    top: true,bottom: true,left: true,right: true,};
  bothJoin = false;
  UserData: any;
  EndSession = false;
  SessionDetail;
  //before both join
  countDownTime_before = 0;
  distance_before = 0;
  minutes1_before = 0;
  minutes_before;
  seconds1_before = 0;
  seconds_before;
  interval_before = undefined;
  cTime_before: Date;
  disconnected: boolean;
  AttachmentMsg;
  backbutton: any;

  constructor(
    public events: Events,public zone: ngzone,public platform: Platform,public navCtrl: NavController,public Telemedicine: Telemedicineservice,public alertController: AlertController,public actionSheetController: ActionSheetController,public modalController: ModalController,public router: Router,public idle: IdleService
  ) {
    this.idle.GetUserToken();
    this.UserType = this.router.getCurrentNavigation().extras.state.UserType;
    this.Telemedicine_Request_ID = this.router.getCurrentNavigation().extras.state.Telemedicine_Request_ID;
    if (this.UserType == 4) {
      this.AlertMsg =
        "Please wait 5 minutes for the patient to join the call,if the patient doesn't join with in 5 minutes then session will be considered as No Show.";
    } else {
      this.AlertMsg =
        "Please wait 5 minutes for the doctor to join the call,if the doctor doesn't join with in 5 minutes then session will be considered as missed.";
    }
    this.Telemedicine.getUserAndDoctorInfoByUID().subscribe(
      (result) => {
        this.UserData = result;
      },(err) => {
        console.log(err);
        this.Telemedicine.isLoading = false;
        this.Telemedicine.loadingController.dismiss();
        this.Telemedicine.ErrorAlert();
      },() => {
        this.Telemedicine.isLoading = false;
        this.Telemedicine.loadingController.dismiss();
      }
    );
  } // constructor ends here

  EnabledisableAudio() {
    this.Micr = !this.Micr;
    if (this.Micr) {
      this.publisher.publishAudio(true);
    } else {
      this.publisher.publishAudio(false);
    }
  }

  EnabledisableVideo() {
    this.Video = !this.Video;
    if (this.Video) {
      this.publisher.publishVideo(true);
    } else {
      this.publisher.publishVideo(false);
    }
  }
}

请帮助我。