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我正在开发一个必须实现 Twilio 可编程视频的移动应用程序。我在 Laravel PHP 框架中使用 Twilio SDK 5.24.2 开发了一个后端，效果很好。

在移动应用程序中，我通过 npm 安装了 twilio-video 2.0.0-beta4 包，并根据“video-quickstart-js-1.x”中的示例开发了一个页面。问题是当 Twilio 尝试连接房间时，控制台中的错误如下（在日志末尾）：

INFO in [connect #1]: Connecting to a Room
DEBUG in [connect #1]: Options: Object
INFO in [NTSIceServerSource #1]: Created a new NTSIceServerSource
DEBUG in [NTSIceServerSource #1]: ECS server: https://ecs.us1.twilio.com
INFO in [connect #1]: LocalTracks were not provided, so they will be acquired automatically before connecting to the Room. LocalTracks will be released if connecting to the Room fails or if the Room is disconnected
WARN in [createLocalTracks #1]: Call to getUserMedia failed: DOMException: Could not start audio source
INFO in [connect #1]: Error while connecting to a Room: DOMException: Could not start audio source

我在 Ionic 中的代码如下：

import { Component, ViewChild } from '@angular/core';
import { IonicPage, NavController, NavParams, LoadingController } from 'ionic-angular';
import { ApiServiceProvider } from '../../providers/api-service';
import TwilioVideo from 'twilio-video';

export class VideoPage
{
  public roomSid: string;
  public activeRoom: any;
  public twilioAccessToken: string;

  @ViewChild('remoteMedia') remoteMedia: any;
  @ViewChild('localMedia') localMedia: any;
  @ViewChild('buttonLeave') buttonLeave: any;

  constructor(
    public navCtrl: NavController, 
    public navParams: NavParams,
    private apiServiceProvider: ApiServiceProvider
  ) {
    this.roomSid = navParams.get('room_sid');
    this.joinToRoom(this.roomSid);
  }

  joinToRoom(roomSid: string) {
    let videoCallData = {
      room_sid: roomSid
    };

    this.apiServiceProvider.joinVideoRoom(videoCallData)
    .then(
      (result) => {
        this.twilioAccessToken = result.access_token;
        this.generateVideoCall();
      },
      (error) => {
        console.log(error);
      }
    )
    .catch((error) => {
      console.log(error);
    });
  }

  generateVideoCall() {
    let connectOptions = {
      name: this.roomSid,
      video: true,
      audio:true
    };

    connectOptions['logLevel'] = 'debug';

    TwilioVideo.connect(this.twilioAccessToken, connectOptions)
    .then(this.roomJoined, function(error) {
      console.log('Could not connect to Twilio: ' + error.message);
    });
  }

  roomJoined(room: any) {
    this.activeRoom = room;

    // Attach LocalParticipant's Tracks, if not already attached.
    var previewContainer = this.localMedia;
    if (!previewContainer.querySelector('video')) {
      this.attachParticipantTracks(this.activeRoom.localParticipant, previewContainer);
    }

    // Attach the Tracks of the Room's Participants.
    this.activeRoom.participants.forEach(function(participant) {
      console.log("Already in Room: '" + participant.identity + "'");
      let previewContainer = this.remoteMedia;
      this.attachParticipantTracks(participant, previewContainer);
    });

    // When a Participant joins the Room, log the event.
    this.activeRoom.on('participantConnected', function(participant) {
      console.log("Joining: '" + participant.identity + "'");
    });

    // When a Participant adds a Track, attach it to the DOM.
    this.activeRoom.on('trackAdded', function(track, participant) {
      console.log(participant.identity + " added track: " + track.kind);
      var previewContainer = this.remoteMedia;
      this.attachTracks([track], previewContainer);
    });

    // When a Participant removes a Track, detach it from the DOM.
    this.activeRoom.on('trackRemoved', function(track, participant) {
      console.log(participant.identity + " removed track: " + track.kind);
      this.detachTracks([track]);
    });

    // When a Participant leaves the Room, detach its Tracks.
    this.activeRoom.on('participantDisconnected', function(participant) {
      console.log("Participant '" + participant.identity + "' left the room");
      this.detachParticipantTracks(participant);
    });

    // Once the LocalParticipant leaves the room, detach the Tracks of all Participants, including that of the LocalParticipant.
    this.activeRoom.on('disconnected', function() {
      console.log('Left room');

      if (this.previewTracks) {
        this.previewTracks.forEach(function(track) {
          track.stop();
        });
        this.previewTracks = null;
      }

      this.detachParticipantTracks(this.activeRoom.localParticipant);
      this.activeRoom.participants.forEach(this.detachParticipantTracks);
    });
  }

  // Attach the Participant's Tracks to the DOM.
  attachParticipantTracks(participant, container) {
    var tracks = Array.from(participant.tracks.values());
    this.attachTracks(tracks, container);
  }

  // Attach the Tracks to the DOM.
  attachTracks(tracks, container) {
    tracks.forEach(function(track) {
      container.appendChild(track.attach());
    });
  }

  // Detach the Tracks from the DOM.
  detachTracks(tracks) {
    tracks.forEach(function(track) {
      track.detach().forEach(function(detachedElement) {
        detachedElement.remove();
      });
    });
  }

  // Detach the Participant's Tracks from the DOM.
  detachParticipantTracks(participant) {
    var tracks = Array.from(participant.tracks.values());
    this.detachTracks(tracks);
  }

  // Leave Room.
  leaveRoomIfJoined() {
    if (this.activeRoom) {
      this.activeRoom.disconnect();
    }
  }
}

HTML 具有以下结构：

<ion-content padding>
  <div #remoteMedia></div>

  <div #localMedia></div>

  <div id="buttonContainer">
    <button ion-button icon-only round #buttonLeave (click)="leaveCall($event)">
      <ion-icon name="close"></ion-icon>
    </button>
  </div>
</ion-content>

我已经安装了插件 cordova-plugin-media-capture 并在 config.xml 中分配了这个权限

<config-file parent="/*" target="AndroidManifest.xml">
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
</config-file>

我错过了什么？

提前致谢。

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0 回答 0