在 Twilio 聊天 android 中调用当前频道上的消息时为空

Question

最近我更新了我的应用程序以支持最近的version twilio chat 0.11.1。之后，当我调用 currentChannel.getMessages() 时，它返回 null。 我正在这样做

        Channels channelsObject = basicClient.getIpMessagingClient
        channelsObject.getChannel(channelId, new CallbackListener<Channel>() {
                    @Override
                    public void onSuccess(final Channel channel) {
                        currentChannel = channel;
                        setupRecyclerView();
                    }
                });
        private void setupRecyclerView() {
              currentChannel.addListener(ChatFragment.this);
              currentChannel.synchronize(new com.twilio.chat.CallbackListener<Channel>() {
              @Override
              public void onError(ErrorInfo errorInfo) {
                Application.get().logErrorInfo("Channel sync failed", errorInfo);
              }

              @Override
              public void onSuccess(Channel result) {
                logger.d("Channel sync success for " + result.getFriendlyName());
            }
        });
        Messages messagesObject = currentChannel.getMessages();

我收到类似

的警告

 | WARNING  | ChatUtils(native) | ListenerWrapper default onSuccess() not found
| WARNING  | Channel(native) | No messages available, maybe you forgot to synchronize the channel?

Answer 1

没有可用的消息，也许您忘记同步频道？

这正是正在发生的事情。只有当您收到CallbackListener.onSuccess() 回调时，才会同步频道。它是异步执行的，您的 getMessages() 调用会在回调触发之前执行。

      currentChannel.synchronize(new com.twilio.chat.CallbackListener<Channel>() {
          @Override
          public void onError(ErrorInfo errorInfo) {
            Application.get().logErrorInfo("Channel sync failed", errorInfo);
          }

          @Override
          public void onSuccess(Channel result) {
            logger.d("Channel sync success for " + result.getFriendlyName() + " now can get messages and members objects");
            Messages messagesObject = result.getMessages();
            // should be non-null now
          }
      });