watchOnlineState error 错误码248是什么原因 store.js下方法setCurrentConversationInfo setCurrentConversationInfo(conversationInfo) { if (!conversationInfo) { if (conversationState.currentConversationInfo) { let conversation = conversationState.currentConversationInfo.conversation; if ([ConversationType.Single, ConversationType.Group].indexOf(conversation.type) >= 0) { wfc.unwatchOnlineState(conversation.type, [conversation.target]); } else if (conversation.type === ConversationType.Channel) { let content = new LeaveChannelChatMessageContent(); wfc.sendConversationMessage(conversation, content); } else if (conversation.type === ConversationType.ChatRoom) { wfc.quitChatroom(conversation.target) } } conversationState.currentConversationInfo = null; conversationState.shouldAutoScrollToBottom = false; conversationState.currentConversationMessageList.length = 0; conversationState.currentConversationOldestMessageId = 0; conversationState.currentConversationOldestMessageUid = 0; conversationState.currentConversationRead = null; conversationState.enableMessageMultiSelection = false;

        return;
    }

    if (conversationState.currentConversationInfo && conversationState.currentConversationInfo.conversation.equal(conversationInfo.conversation)) {
        return;
    }

    let conversation = conversationInfo.conversation;
    if (conversation.type === ConversationType.Group || (conversation.type === ConversationType.Single && !wfc.isMyFriend(conversation.target))) {
        wfc.watchOnlineState(conversation.type, [conversation.target], 1000, (states) => {
            states.forEach((e => {
                miscState.userOnlineStateMap.set(e.userId, e);
            }))
            this._patchCurrentConversationOnlineStatus();

        }, (err) => {
            console.log('watchOnlineState error', err);
        })
    }
    if (conversation.type === ConversationType.Channel) {
        let content = new EnterChannelChatMessageContent();
        wfc.sendConversationMessage(conversation, content);
    } else if (conversation.type === ConversationType.ChatRoom) {
        wfc.joinChatroom(conversation.target);
    }
    conversationState.currentConversationInfo = conversationInfo;
    conversationState.shouldAutoScrollToBottom = true;
    conversationState.currentConversationMessageList.length = 0;
    conversationState.currentConversationOldestMessageId = 0;
    conversationState.currentConversationOldestMessageUid = 0;
    this._loadCurrentConversationMessages();

    conversationState.currentConversationRead = wfc.getConversationRead(conversationInfo.conversation);

    conversationState.enableMessageMultiSelection = false;
    conversationState.showChannelMenu = false;
    if (conversation.type === ConversationType.Channel) {
        let channelInfo = wfc.getChannelInfo(conversation.target, true);
        if (channelInfo.menus && channelInfo.menus.length > 0) {
            conversationState.showChannelMenu = true;
        }
    } else if (conversation.type === ConversationType.Group) {
        wfc.getGroupInfo(conversation.target, true);
    } else if (conversation.type === ConversationType.Single) {
        wfc.getUserInfo(conversation.target, true);
    }
    conversationState.quotedMessage = null;
    conversationState.currentVoiceMessage = null;

    clearTimeout(conversationState.inputClearHandler);
    conversationState.inputtingUser = null;

    pickState.messages.length = 0;

},