InputToolbar发送按钮不起作用

我正在使用JSQMessagesViewController和Firebase在我的应用程序中实现聊天功能.我的ChatViewController中的一切都运行良好.但是现在我已经将我的ChatViewController移动到父视图控制器内的容器视图中,现在当扩展键盘时"发送"按钮不起作用.

换句话说,为了发送聊天消息,我必须调用view.endEditing(true)它本身在UITabBarController中的父视图控制器,然后发送按钮将起作用.但只要键盘展开,发送按钮就不会响应.下面是我的ChatViewController代码...

import Foundation
import UIKit
import FirebaseDatabase
import JSQMessagesViewController


final class ChatViewController: JSQMessagesViewController {

    var outgoingBubbleImageView: JSQMessagesBubbleImage!
    var incomingBubbleImageView: JSQMessagesBubbleImage!
    var fireRootRef: FIRDatabaseReference!
    var chatMessages = [JSQMessage]()
    var messagesRefHandle: UInt!
    var chatChannelId: String!


    override func viewDidLoad(){
        super.viewDidLoad()
        self.inputToolbar.contentView.textView.backgroundColor = UIColor.clear
        inputToolbar.alpha = 0.7
        ...
    }


    override func viewWillAppear(_ animated: Bool){
        super.viewWillAppear(animated)
    }

    override func viewDidAppear(_ animated: Bool){
        super.viewDidAppear(animated)
    }


    func setupView(){
     ...
    }    

    override func viewWillDisappear(_ animated: Bool) {
        super.viewDidDisappear(animated)
        removeChatObserver()
    }

    func removeChatObserver(){
       ...
    }

    private func setupMessageBubbles() {
       ...
    }



    override func collectionView(_ collectionView: UICollectionView,
                                 numberOfItemsInSection section: Int) -> Int {
        return chatMessages.count
    }

    override func collectionView(_ collectionView: JSQMessagesCollectionView!, messageBubbleImageDataForItemAt indexPath: IndexPath!) -> JSQMessageBubbleImageDataSource! {
        let message = chatMessages[indexPath.item]
        if message.senderId == senderId {
            return outgoingBubbleImageView
        } else {
            return incomingBubbleImageView
        }
    }


    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = super.collectionView(collectionView, cellForItemAt: indexPath) as! JSQMessagesCollectionViewCell


        let message = chatMessages[indexPath.item]

        if message.senderId == senderId {
            cell.textView!.textColor = UIColor.white
        } else {
            cell.textView!.textColor = UIColor.black
        }

        return cell
    }

    override func collectionView(_ collectionView: JSQMessagesCollectionView!, layout collectionViewLayout: JSQMessagesCollectionViewFlowLayout!, heightForMessageBubbleTopLabelAt indexPath: IndexPath!) -> CGFloat {
        let message = chatMessages[indexPath.item]
        if message.senderId == self.senderId {
            return 0
        }

        if indexPath.item > 0 {
            let previousMessage = chatMessages[indexPath.item - 1]
            if previousMessage.senderId == message.senderId {
                return 0
            }
        }

        return kJSQMessagesCollectionViewCellLabelHeightDefault
    }



    override func collectionView(_ collectionView: JSQMessagesCollectionView!, attributedTextForMessageBubbleTopLabelAt indexPath: IndexPath!) -> NSAttributedString! {

        let message = chatMessages[indexPath.item]

        switch message.senderId {
        case senderId:
            return nil
        default:
            guard let senderDisplayName = message.senderDisplayName else {
            assertionFailure()
            return nil
        }
        return NSAttributedString(string: senderDisplayName)

        }
    }





    //no avatar images
    override func collectionView(_ collectionView: JSQMessagesCollectionView!, avatarImageDataForItemAt indexPath: IndexPath!) -> JSQMessageAvatarImageDataSource! {
        return nil
    }


    override func didPressSend(_ button: UIButton!, withMessageText text: String!, senderId: String!, senderDisplayName: String!, date: Date!) {
        print("DID PRESS SEND")
        let fireMessagesRef =     fireRootRef.child("messages").child(chatChannelId)
        let itemRef = fireMessagesRef.childByAutoId()
        let messageItem = [
            "text": text,
            K.MessageKeys.senderIdKey: senderId,
            "displayName": senderDisplayName,
        ]
        itemRef.setValue(messageItem)

        JSQSystemSoundPlayer.jsq_playMessageSentSound()

        finishSendingMessage()
    }




    override func didPressAccessoryButton(_ sender: UIButton!) {
        //
    }


    private func observeMessages() {
        ...
    }


    func addMessage(id: String, text: String, name: String) {
        ...
    }


}

我想修复发送按钮,以便用户可以在键盘扩展时点击发送.有趣的是,为了解除键盘,我必须调用view.endEditing(true)父视图控制器而不是子视图本身.这让我觉得我需要在父视图上配置按钮操作,但是我没有取得任何成功.谢谢你的帮助