Question

我刚刚将代码更新为Swift 4.2，并修复了所有错误。现在，我正在尝试使用“ MessageKit”将Messenger放入我的应用程序。一切都已更新，但我遇到了这些问题...现在是说MessagesInputBarDelegate

“使用未声明的类型'MessagesInputBarDelegate'”

和

“使用未声明的类型'MessageInputBar'”

也是

“参数标签'（type :)'与任何可用的重载都不匹配”

和

“无法转换类型'_的值？'预期的参数类型“ URL？”

使用未声明的类型'MessagesInputBarDelegate'

使用未声明类型的“ MessageInputBar”

extension CustomerChatViewController: MessagesInputBarDelegate {

func messageInputBar(_ inputBar: MessageInputBar, didPressSendButtonWith text: String) {
    let message = Message(user: user, content: text)

    save(message)
    inputBar.inputTextView.text = ""
}

}

参数标签“（类型：）”与任何可用的重载都不匹配

let cameraItem = UIBarButtonItem(type: .system)

无法转换类型“ _？”的值预期的参数类型“ URL？”

let imageName = [UUID().uuidString, String(Date().timeIntervalSince1970)].joined()
    storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
        completion(meta?.downloadURL())
    }

Answer 1

您已安装 MessageInputBar 吗？您可以这样安装

pod 'MessageInputBar'

自 MessageKit 2.0.0 起，您必须安装 MessageInputBar

Answer 2

然后添加对我也有用

import InputBarAccessoryView

然后在viewDidLoad（）中添加以下内容：

override func viewDidLoad() {
        super.viewDidLoad()
        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)

    }

调用委托方法：

extension ChatVC: MessageInputBarDelegate {

    func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) {
        guard let user = self.user else{return}
        guard let uid = Auth.auth().currentUser?.uid else{return}
        let ref = Database.database().reference().child("messages").child(uid).child("personal").child(user.uid)
        let values = ["sender": uid, "text": text, "recipient": user.uid]
        ref.updateChildValues(values)
        inputBar.inputTextView.text = ""
    }
}

Answer 3

好吧，我也在视图控制器类中添加了它

import MessageInputBar

Swift MessageKit问题-运行Swift 4.2

3 个答案: