如何在 agora 中进行视频通话？

Question

我用的是官方的flutter agora视频通话的例子，但是本地摄像头只打开，远程用户一直没有被调用。

包： “agora_rtc_engine：^4.2.0” "permission_handler: ^8.3.0"

这是官方的例子 https://pub.dev/packages/agora_rtc_engine/example

我也在关注这个教程 https://www.youtube.com/watch?v=zVqs1EIpVxs

这是我的代码

    import 'dart:async';
    
    import 'package:agora_rtc_engine/rtc_engine.dart';
    import 'package:agora_rtc_engine/rtc_local_view.dart' as RtcLocalView;
    import 'package:agora_rtc_engine/rtc_remote_view.dart' as RtcRemoteView;
    import 'package:flutter/material.dart';
    import 'package:permission_handler/permission_handler.dart';
    
    const appId = "843b5a8f8c3a4e0fbe2c804654f4ce36";
    const token = "006843b5a8f8c3a4e0fbe2c804654f4ce36IAA4Le0bHwiNWScQ3+1c4sM+UXErd0xfOdjuoZRe1Dz8B9vEKrAAAAAAEADVz7HmNwPgYQEAAQAWA+Bh";
    
    void main() => runApp(MaterialApp(home: MyApp()));
    
    class MyApp extends StatefulWidget {
      @override
      _MyAppState createState() => _MyAppState();
    }
    
    class _MyAppState extends State<MyApp> {
      int? _remoteUid;
      bool _localUserJoined = false;
      late RtcEngine _engine;
    
      @override
      void initState() {
        super.initState();
        initAgora();
      }
    
      Future<void> initAgora() async {
        // retrieve permissions
        await [Permission.microphone, Permission.camera].request();
    
        //create the engine
        _engine = await RtcEngine.create(appId);
        await _engine.enableVideo();
        _engine.setEventHandler(
          RtcEngineEventHandler(
            joinChannelSuccess: (String channel, int uid, int elapsed) {
              print("local user $uid joined");
              setState(() {
                _localUserJoined = true;
              });
            },
            userJoined: (int uid, int elapsed) {
              print("remote user $uid joined");
              setState(() {
                _remoteUid = uid;
              });
            },
            userOffline: (int uid, UserOfflineReason reason) {
              print("remote user $uid left channel");
              setState(() {
                _remoteUid = null;
              });
            },
            
          ),
        );
    
        await _engine.joinChannel(token, "test_video_call", null, 0);
      }
    
      // Create UI with local view and remote view
      @override
      Widget build(BuildContext context) {
        return Scaffold(
          appBar: AppBar(
            title: const Text('Agora Video Call'),
          ),
          body: Stack(
            children: [
              Center(
                child: _remoteVideo(),
              ),
              Align(
                alignment: Alignment.topLeft,
                child: Container(
                  width: 100,
                  height: 150,
                  child: Center(
                    child: _localUserJoined
                        ? RtcLocalView.SurfaceView()
                        : CircularProgressIndicator(),
                  ),
                ),
              ),
            ],
          ),
        );
      }
    
      // Display remote user's video
      Widget _remoteVideo() {
        if (_remoteUid != null) {
          return RtcRemoteView.SurfaceView(uid: _remoteUid!);
        } else {
          return Text(
            'Please wait for remote user to join',
            textAlign: TextAlign.center,
          );
        }
      }
    }

Answer 1

我还查看了插件 example 中可用的示例代码，但您需要做的事情很少 ensure。

UID 每个用户应该不同（如果测试则放 0）
token 应该来自创建方法中使用的相同 AppId。（如果启用令牌）
Token 将在 24 hours 后到期，因此请确保该令牌有效。
Channel name 应该是 unique

如何在 agora 中进行视频通话？

How to make video call in flutter with agora?

flutter

video-streaming

agora.io

videochat