ios - 按收到日期的顺序显示两个自定义对象数组

Question

我有两个自定义对象数组([InboundMessages]、[OutboundMessages])

    struct InboundMessage {

        let senderName: String!
        let senderText: String!
        let senderProfileImageName: String!
        let timeAndDateMessageReceived: NSDate!
        let hasBeenRead: Bool!
        let messageUUID = NSUUID().UUIDString
        let conversationUUID: NSUUID = NSUUID()

    }
    struct OutboundMessage {

        var replyText: String!
        var messageUUID = NSUUID().UUIDString
        var timeAndDateMessageSent: NSDate!
        var conversationUUID: NSUUID = NSUUID()
    }

与另一个自定义对象“对话”一起保存

    class Conversation {

        var uUID: NSUUID!
        var inboundMessages: [InboundMessage] = []
        var outboundMessages:[OutboundMessage] = []

    }

我想像普通对话一样在 tableview 中显示按日期排序的对话，但在多次尝试后我无法理解如何去做。我觉得最好将它们全部放入一个排序数组中，然后让 tableview 处理它，但我仍然不确定如何对它们进行排序，然后如何将两个不同的自定义对象放入同一个数组中？

您可能已经猜到我是 swift 和 iOS 的新手，因此非常感谢您的帮助。

谢谢

Answer 1

<强>1。创建基类:

class Message {
    let timeAndDateMessageReceived: NSDate!
    let hasBeenRead: Bool!
    let messageUUID = NSUUID().UUIDString
    let conversationUUID: NSUUID = NSUUID()
}

<强>2。扩展 Message 类:

class OutboundMessage: Message
class InboundMessage: Message

<强>3。创建一个 Message 数组:

var messages: [Message] = inboundMessages as [Message] + outboundMessages as [Message]

<强>4。按 timeAndDateMessageReceived 排序:

messages.sort({ $0.timeAndDateMessageReceived.compare($1. timeAndDateMessageReceived) == NSComparisonResult.OrderedAscending })