ios - 如何从解析中获取数组的数组

Question

我在名为“Polygon”的列中存储了解析中的数组，如下所示:
[[13.74653990489156,100.4923625509455],[13.74652348443379,100.4925687879127],[13.74636831105128,100.4925992163138],[13.746602 30262049,100.4924453837896]]

但我无法访问这些数据 =rom 解析。

我试过这个方法:

 private func gettingPolygonsFromParse() {
    let query = PFQuery(className: "AttractionPolygon")
    query.findObjectsInBackgroundWithBlock { (polygonsArray, error) -> Void in
        if error == nil {                
            for polygon in polygonsArray as! [PFObject] {
               // I am unable to get polygon value from here. 

            }
        }
    }
}

Answer 1

尚不清楚Polygon列是否属于AttractionPolygon类。

如果是，试试这个:

for polygon in polygonsArray as! [PFObject] {
    if let array1 = polygon["Polygon"] as? [[Double]] {
        for item in array1 {
            print(item)
        }
    }
}