Question

所以这是控制器层次结构tabBarController->一些控制器和聊天通道控制器。

，此聊天频道控制器也是导航控制器。当我选择行时，它将推送到MessageViewController类的聊天控制器。

我这里有2个问题，其中1个是次要专业。

次要角色是头像。

    func avatarSize(for message: MessageType, at indexPath: IndexPath, in messagesCollectionView: MessagesCollectionView) -> CGSize {
        print("delegate method called")
        return .zero
}

我在其中一个代表中将其设置为零，但它仍然显示。而且它从不打印该语句。

主要的一点是输入栏根本没有显示。我的pod文件中已经有InputBarAccessoryView 和

messageInputBar.delegate = self as InputBarAccessoryViewDelegate

extension ChatViewController: InputBarAccessoryViewDelegate {

    func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) {
        print("text")
    }

}

但没有任何显示。我还检查了视图，但找不到

Answer 1

要解决此问题，我必须：

import InputBarAccessoryView

所以您不必这样做：

messageInputBar.delegate = self as InputBarAccessoryViewDelegate

并在您的viewDidLoad（）中设置这些委托（颜色可选）

        super.viewDidLoad()
         guard let userId = Auth.auth().currentUser?.uid else{return}
        Database.fetchUserWithUID(uid: userId) { (user) in
            self.currentLogginUser =  user
        }
        messageInputBar.delegate = self
        maintainPositionOnKeyboardFrameChanged = true
        messageInputBar.inputTextView.tintColor = .yellow
        messageInputBar.sendButton.setTitleColor(.purple, for: .normal)

        messagesCollectionView.messagesDataSource = self
        messagesCollectionView.messagesLayoutDelegate = self
        messagesCollectionView.messagesDisplayDelegate = self
        messagesCollectionView.messageCellDelegate = self

        messageInputBar.leftStackView.alignment = .center
        messageInputBar.setLeftStackViewWidthConstant(to: 50, animated: false)
    getMessages()
    }

然后使用实时数据库-Firebase


    func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) {
        guard let recipient = self.recipient else{return}
        guard let uid = Auth.auth().currentUser?.uid else{return}
        let ref = Database.database().reference().child("messages")
        let childRef = ref.childByAutoId()

        let values = ["sender": uid, "text": text, "recipient": recipient.uid, "time": Date().timeIntervalSince1970.description]
        childRef.updateChildValues(values) { (err, ref) in

            if let err = err{
                print(err)
                return
            }

            let userMessageRef = Database.database().reference().child("user-messages").child(uid).child(recipient.uid)

            //add chat id generated from AutoId
            guard let messageId = childRef.key else{return}
            userMessageRef.updateChildValues([messageId: 1])

            let recipientMessageRef = Database.database().reference().child("user-messages").child(recipient.uid).child(uid)
            recipientMessageRef.updateChildValues([messageId:1])
        }
        inputBar.inputTextView.text = ""

    }
}

Answer 2

显示输入栏的解决方案：

class ViewController: MessagesViewController {

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

        self.becomeFirstResponder()
    }
}

来源：https://github.com/MessageKit/MessageKit/issues/501#issuecomment-361913168

MessageKit不显示消息输入栏Swift 5

2 个答案: