Swift MessageKit 问题 - 运行 swift 4.2

Question

我刚刚将我的代码更新到 swift 4.2 并修复了所有错误。现在我正在尝试使用 'MessageKit' 将信使放入我的应用程序。一切都已更新，但我遇到了这些问题...现在它说 MessagesInputBarDelegate

"Use of undeclared type 'MessagesInputBarDelegate'"

和

"Use of undeclared type 'MessageInputBar'"

此外，

"Argument Labels '(type:)' do not match any available overloads"

和

"Cannot convert value of type'_?' to expected argument type 'URL?"

使用未声明的类型'MessagesInputBarDelegate'

使用未声明的类型'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“(type:)”不匹配任何可用的重载

let cameraItem = UIBarButtonItem(type: .system)

无法转换“_?”类型的值到预期的参数类型 '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

你安装了MessageInputBar了吗？你可以这样安装它

pod 'MessageInputBar'

因为 MessageKit 2.0.0 你必须安装 MessageInputBar

Answer 2

我也在视图控制器中添加了这个class

import MessageInputBar

Answer 3

添加对我也有用

import InputBarAccessoryView

然后在 viewDidLoad() 中添加：

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 = ""
    }
}

Swift MessageKit 问题 - 运行 swift 4.2

Swift MessageKit problems - running swift 4.2

swift

messagekit