Question

所以我有一个问题，我把一些项目放在一个对象后调用save。我去了一个API，我下载了一些信息，然后我将它保存到另一个系统暂时使用，但.save（）似乎只保存了2个项目，没有选择的特殊模式。有人可以解释问题是什么吗？

let url = URL(string: link)
    let spots = PFObject(className:"spot")
    let task = URLSession.shared.dataTask(with: url!) { (data, response, error) in

        if error != nil {
            print(error)
        }
        else{
            if let urlContent = data{

                do{
                    let jsonResult = try JSONSerialization.jsonObject(with: urlContent, options: JSONSerialization.ReadingOptions.mutableContainers)
                    let results = (jsonResult as! NSDictionary)["results"]
                    let venueList = (results as! NSArray)
                    //print(jsonResult)
                    var i = 0
                    while i < venueList.count{
                        let venues = venueList[i] as! NSDictionary
                        let name = venues["name"] as! String
                        let geometry = venues["geometry"] as! NSDictionary
                        let location = geometry["location"] as! NSDictionary
                        let cLat = location["lat"] as! Double
                        let cLon = location["lng"] as! Double
                        let vPoint = PFGeoPoint(latitude: cLat, longitude: cLon)
                        //print(name," ", vPoint)
                        spots["venue"] = name
                        spots["name"] = vPoint
                        do{
                           try HotSpots.save()
                            print("Saved! ",name," ", vPoint)
                        }
                        catch{
                            print("Save Error")
                        }
                        i+=1
                    }




                }
                catch{
                    print("JSON Error")
                }
            }
        }
    }
    task.resume()
}

Answer 1

问题是您要将两个值始终保存在同一个PFObject实例中。

在循环中移动行let spots = PFObject(className:"spot")。

PS：使用Swift原生类型。例如，这是更有效的

let location = geometry["location"] as! [String:Double]
let cLat = location["lat"]!
let cLon = location["lng"]!

在while循环中保存为Parse

1 个答案: