如何创建自己的GMSMarker? (GoogleMaps，iOS)-Swift

问题描述

我想创建自己的标记，因为我需要跟踪有关它们的额外信息(例如，添加日期，标记ID)...

I would like to create my own markers because I need to track extra information about them (for example, date added, marker ID)...

所以我创建了另一个类，如下所示:

So I created another class, as follows:

    class myMarker: GMSMarker {
        var markerID: Int
        var addedDate: NSDate

    }

但是我不知道下一步该怎么做...我应该创建一个"init"方法来填充我的markerId和addedDate吗?或者我应该重写GMSMarker构造函数(不是"init")可以是

But I don't know what do to next... should I create an "init" method to populate my markerId and addedDate? or I should override the GMSMarker constructor (which is not "init")It can be

    class myMarker: GMSMarker {
        var markerID: Int
        var addedDate: NSDate
        var myMarker: GMSMarker

        init(marID: Int, date: NSDate, GMSMarker: markerwithoutDateNorId){
           self.markerID = marID
           self.addedDate = date
           self.myMarker = markerwithoutDateNorId
        }
     }

我真的不知道如何实现这一点.也许我什至不需要实现构造函数，而是使用GMSMarker构造函数(我相信我继承了)，然后使用set方法设置标记ID和Date?

I really don't have an idea how to implement this. Maybe I don't even need to implement a constructor, but use the GMSMarker constructor (which I believe I inherited) and then use set methods to set marker ID and Date?

或者我可以重写GMSMarker构造函数，然后使用super(在这里是什么)，然后添加日期和标记ID.

Or I could override GMSMarker constructor, to then use super(what-is-expecting-here) and then I would add the date and marker ID.

我确实需要创建自己的标记类型，因为我需要跟踪这些内容……例如，我希望将来删除所有早于1周的标记...并且如果我不跟踪标记的日期，那我将是不可能的.

I really need to create my own type of marker, because I need to keep track of these things... for example, I would like, in a future, remove all markers older than 1 week for example... and if I don't keep track of markers date, that would me impossible.

我真的真的需要Swift和编程.非常感谢您的帮助:)

Im really need to Swift and programming in general. I'd really appreciate your help :)

推荐答案

还有另一种方法，GMSMarker具有 userData 属性，可以接受AnyObject.

There is an another approach, GMSMarker has userData property which can accept AnyObject.

var info: Dictionary<String, AnyObject>?
info["markerID"] = 0
info["addedDate"] = NSDate()

let marker = GMSMarker()
marker.position = CLLocationCoordinate2D(latitude:latitude, longitude:longitude)
marker.map = nil
marker.tracksInfoWindowChanges = false
marker.map = self.mapView
marker.userData = info

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