Twilio聊天：尝试在频道上获取成员可达性的通知

Question

运行下面的代码，我得到了可达性已启用的通知和成员的控制台日志，但是当我让其他成员进入/退出页面时，没有事件触发。

/*twilioChat is the return from  require: https://media.twiliocdn.com/sdk/js/chat/v3.3/twilio-chat.min.js*/
        function chatInit(twilioChat){ 

            $scope.twilioChat = twilioChat;
            $scope.twilioChat.Client.create($scope.TOKEN).then(client => {
              console.log('Created chat client');
                $scope.chatClient = client;
                $scope.chatClient.getSubscribedChannels().then(function(){
                    $scope.chatReady = true;
                    console.log('chat is ready');
                    createOrJoinMonitorChannel();
                });
                
                
            }).catch((err) =>{
                console.error(err);
                
            })
        }
    
    function createOrJoinMonitorChannel(){
            
            $scope.chatClient.getChannelByUniqueName($scope.monitor_listen)
                .then(function(channel){
                      $scope.monitorListenChannel = channel;
                      setupMonitorChannel();
                      }).catch(function(err){
                console.log(err);
                $scope.chatClient.createChannel({
                    uniqueName: $scope.monitor_listen,
                    friendlyName: $scope.monitor_listen,
                    
                }).then(function(channel){
                    $scope.monitorListenChannel = channel;
                   setupMonitorChannel();
                }).catch(function(err){
                    console.log('Monitor Channel could not be created');
                    console.log(err);
                });
            });
            
        }
    
    function setupMonitorChannel(){
            var status = $scope.monitorListenChannel.state.status;
            if(status !== 'joined'){
            $scope.monitorListenChannel.join().then(function(channel){
                
                });
            }else{
            
            }
            $scope.monitorListenChannel.on('memberJoined',function(m){
                console.log('member joined');
                
            });
            $scope.monitorListenChannel.on('memberLeft',function(m){
                console.log('member left');
                
            });
                if($scope.chatClient.reachabilityEnabled){
                    console.log('Enabled');
                }else{
                    console.log('Not Enabled');
                }
                
            
              $member_promise = $scope.monitorListenChannel.getMembers();
              $member_promise.then(members=>{
                 console.log(members); 
                 members.forEach(member=>{
                     member.on('userInfoUpdated',function(user){
                        console.log('user info updated') ;
                     });
                 })
              });
            
            $scope.monitorListenChannel.on('messageAdded', function(message){
                var data = isJSONSTR(message.body);
                $handler.classroomMonitor(data);
            });
        }

Answer 1

当您启用可达性时，它会在用户联机或未联机时触发一个事件。可以使用user.on（“updated”,（{user,updateRasons}）=>{}）事件侦听器。根据您使用的版本，可能不支持userInfoUpdated。

当您监听某个成员何时离开频道时，您必须自己调用channel.leave（）。这有帮助吗？

https://media.twiliocdn.com/sdk/js/chat/releases/4.0.0/docs/user.html