布尔条件在 Swift 中不起作用

Question

我正在使用消息套件。在 chatDashbaord 扩展中，我有布尔条件，比如如果 isnewConversation 包含 true 则调用函数 insertConversation2 如果 isnewConversation 包含 false 则调用函数 sendMessag.But 我已经使用断点检查了代码不会进入 isNewconversation 块我不知道为什么 happening.When 我没有在代码工作文件中使用布尔语句并将数据附加到数组中，请检查代码谢谢。

消息视图控制器：

 class ChatDashboard: MessagesViewController {
        var userActive: String? = nil
        var receiverName:String? = nil
        var isnewConversation = false
        var recevierName:String? = nil
        var otheruserEmail: String? = nil
        var conversationId:String? = nil
        var messages : [Message] = []{
            didSet{
                DispatchQueue.main.async {
                    self.messagesCollectionView.reloadDataAndKeepOffset() 
            }
        }

分机 ChatDashboard：

 extension ChatDashboard: InputBarAccessoryViewDelegate{
 
        
        func inputBar(_ inputBar: InputBarAccessoryView, didPressSendButtonWith text: String) {
            guard !text.replacingOccurrences(of: "", with: "").isEmpty,let selfSender =
                    self.selfSender,let  messageId = createMessageId() else{
                return
            }
            
            let message = Message(sender: selfSender, messageId: messageId, sentDate: Date(), kind: .text(text))

            
            guard let otheruserEmail = otheruserEmail,let recevierName = recevierName else {return}
        
          if isnewConversation{
                NetworkingService.shared.insertConversation2(with:otheruserEmail,name:recevierName, message: message) { (success) in
                    if success{
                        print("message Send")
                        self.isnewConversation = false
                    }
                    else{
                        print("not send")
                    }
                }
        }
            
         else{
            guard let converId = conversationId else {return}
            NetworkingService.shared.sendMessage(converId,recevierName,message) { (success) in
                if success{
                    print("message send in")
                }
                else{
                    print("message not send")
                }
            }

        }
            
        }

}

}

条件为假时的 SendMessage 函数代码：

 func sendMessage(_ convesationId:String,_ name:String,_ message:Message,completion:@escaping(Bool) -> Void){
    
    self.sendMessageReciverToSender(convesationId) { (user) in
        guard var receiverToSenderNdoe = user else {completion(false); return}
        let dformatter = DateFormatter()
        dformatter.dateFormat = "dd/MM/yyy HH:mm"
        let dateToString = dformatter.string(from: Date())
        guard let email = UserDefaults.standard.value(forKey: "useremail") as? String else {
            print("Email not found in user default")
            completion(false)
            return
        }
        let currentUserEmail = getUserEmail(currentEmail: email)
            var messageData = ""
            switch message.kind{
            case .text(let messageText):
                messageData = messageText
            default:
                break
            }
            let newMessge: [String:Any] = [
                "id":message.messageId,
                "type":message.kind.messageKindString,
                "content":messageData,
                "date": dateToString,
                "sender_email":currentUserEmail,
                "is_read":false,
                "name":name
                
            ]
            
        //issues is here 
        if var conversationData = receiverToSenderNdoe["messages"] as? [[String:Any]]{
            conversationData.append(newMessge)
            receiverToSenderNdoe["messages"] = conversationData
            self.reciverToSenderSave(convesationId, newMessge) { (result) in
                if result{
                    completion(true)
                }
                else{
                    completion(false)
                }
            }
        }
        
        
    }

}

在 sendMessage 函数中，这两个函数被调用

func sendMessageReciverToSender(_ conversationId:String,completion:@escaping([[String:Any]]?) -> Void){
    database.child("\(conversationId)/messages").observeSingleEvent(of: .value) { (snapshot) in
        if let currentUser = snapshot.value as? [[String:Any]]{
            completion(currentUser) 
        }
        else{
            print("errro in reciver to sender sendMessageReciverToSender func ")
            completion(nil)
        }
    }
}

func reciverToSenderSave(_ conversationId:String,_ conversation:[[String:Any]],completion:@escaping(Bool)-> Void){
    database.child("\(conversationId)/messages").setValue(conversation){(error,ref) in
        if error == nil{
            completion(true)
        }
        else{
            print("eroor in receiptin \(error?.localizedDescription)")
            completion(false)
        }
        
    }
}

Answer 1

您的 sendMessage return without 在这里呼叫 completion

guard var receiverToSenderNdoe = user else {return}

应该是

guard var receiverToSenderNdoe = user else { completion(false) ; return }

这里

guard let email = UserDefaults.standard.value(forKey: "useremail") as? String else {
   print("Email not found in user default") 
   return
}

应该是

guard let email = UserDefaults.standard.value(forKey: "useremail") as? String else {
   print("Email not found in user default")
   completion(false)
   return
}

您必须确保所有路径都得到处理，以便在 success/failure 中调用您的回调，顺便说一句，像这样

if result{
  completion(true)
}
else{
  completion(false)
}

可能很快

completion(result)

布尔条件在 Swift 中不起作用

Boolean condition is not working in Swift

boolean

ios

swift

messagekit