匹配选定的行以传递数据

Question

我已经看了所有这些Swift和asp。net和javascript问题。

1 2 3 4 5

目标：
当我从MessageListController中的聊天消息列表中选择一条消息时，我希望下一个ChatDetailController中打开的会话是所选择的会话。

我正在为我的WatchKit应用程序在此iOS图像中做同样的事情。选择与Sophia的消息，并打开与Sophia的聊天。[！[在此处输入图像描述][6]][6]

我想传递json“message\u id”，即chatMessageId属性。正如您在代码中看到的那样，我已经将聊天信息ID从消息模型传递到聊天详细控制器。

我需要通过的是ChatModel的chatMessageId吗？还是我已经在传递我需要的数据了

传递的上下文：可选（HTWatch\u Extension.MessageModel（合作伙伴：“9859”，昵称：“Marco”，消息：“你看到的是狗吗？”，城市：“马德里”，countryBadgeImageURL：https://i.imgur.com/PJcyle7.jpg，messageListImageURL：https://i.imgur.com/PJcyle7.jpg，聊天信息ID：“Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ”，状态：“脱机”）

尝试：我是否需要从ChatDetailController的awakeWithContext方法中提取解析ChatModel的Do catch块，并将其放入MessageListController的didSelectRowAt方法中？

消息列表控制器

// ...code...

var messageObject = [MessageModel]()
var chatObject = [ChatModel]()

// ...code...

override func table(_ table: WKInterfaceTable, didSelectRowAt rowIndex: Int) {

    var messageContext = messageObject[rowIndex]
    var chatContext = chatObject[rowIndex]

    do {
        guard let fileUrl = Bundle.main.url(forResource: "Chats", withExtension: "json") else {
            print("File could not be located")
            return
        }
        let data = try Data(contentsOf: fileUrl)
        let decoder = JSONDecoder()

        let msg = try decoder.decode([ChatModel].self, from: data)
        self.chatObject = msg

    } catch let error {
        print(error)
    }

    messageContext.chatMessageId = (chatObject as AnyObject).filter { (dictionaryTemp:[String:String]) -> Bool in
        return dictionaryTemp["message_id"] == chatContext.chatMessageId
    } 

    // WatchKit's model presentation method.
    presentController(withName: "ChatDetailController", context: messageContext)
}

Answer 1

如果我理解正确，您的Chat.json将为所有消息ID设置聊天记录。选择一个消息ID行并加载相应的聊天记录。

在这种情况下，您可以使用过滤器根据消息进行解析。假设你在这样的字典里有它。

示例：

let responseString = "{\"name\":\"Tom\"}"

if let responseData = responseString.data(using: .utf8){
    do {

    let object = try JSONSerialization.jsonObject(with:responseData , options: .allowFragments)
    print("Response Object=\(object)")
    } catch{
        print("parsing Error=\(error)")
    }
}

您可以使用类似的代码来创建您的对象。最终对象应该类似于chat Dicpedia

let chatDictionary = [
[
    "fromId": "zz1234skjksmsjdfwe2zz",
    "toId": "qq43922sdkfjsfmmxdfqq",
    "messageText": "Have you seen is dog?",
    "imageUrl": "https://i.imgur.com/PJcyle7.jpg",
    "message_id": "Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ",
    "read": "true"
    ],
[
    "fromId": "zz1234skjksmsjdfwe2zz",
    "toId": "qq43922sdkfjsfmmxdfqq",
    "messageText": "Yes I have. It's cute.",
    "imageUrl": "https://i.imgur.com/PJcyle7.jpg",
    "message_id": "Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ",
    "read": "true"
    ],
[
    "fromId": "zz1234skjksmsjdfwe2zz",
    "toId": "qq43922sdkfjsfmmxdfqq",
    "messageText": "I want to get a pet too.",
    "imageUrl": "https://i.imgur.com/PJcyle7.jpg",
    "message_id": "Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ1",
    "read": "true"
    ]
]

您在索引处选择了行

    override func table(_ table: WKInterfaceTable, didSelectRowAt rowIndex: Int) {

            let message = messageObjects[rowIndex]
            // Create a chat object Dictionary, parse it before you pass it to the detail View Controller , if you have the chat.json.
// I have used 'Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ', but here you can your message id property to make it dynamic
            message.chatObjects= chatDictionary.filter { (dictionaryTemp:[String : String]) -> Bool in
            return dictionaryTemp["message_id"] == "Tva9d2OJyWHRC1AqEfKjclRwXnlRDQ"
        }
            presentController(withName: "ChatDetailController", context: message)
        }