ios - 在 Swift 中从 NsDIctionary 获取值(value)

Question

大家好，我正在尝试从我的 firebase firestore 中获取一个值，但我似乎一直在获取这些多个有效负载值，而不是我正在寻找的值。这是我目前拥有的:

                let motoGPRiders = db.collection("riders").whereField("game_type", isEqualTo: "MOTOGP").addSnapshotListener { (QuerySnapshot, Error) in
                let allDocuments = QuerySnapshot!.documents

                for riderDocument in allDocuments {

                    let data = riderDocument.data()

                    // Get the rider list
                    guard let riderList  = data["game_type_riders"] as? NSMutableArray else { return }


                    var x = riderList[0] as! NSMutableDictionary

                    var riderName =  x["name"]
                    var y = ""


                }

这是 x 中的内容:

payload_data_0 NSString "Joe"0xd9200b3dfae6b8f0

payload_data_1 内置原始指针 0x0 0x0000000000000000 payload_data_2 Builtin.RawPointer 0x600001471840 0x0000600001471840

包括我的数据库数据的屏幕截图以及任何想法？

Answer 1

将 NSMutableArray 更改为 [Any] 并将 NSMutableDictionary 更改为 [String: Any]。

这是完整的代码。

let motoGPRiders = db.collection("riders").whereField("game_type", isEqualTo: "MOTOGP").addSnapshotListener { (QuerySnapshot, Error) in
                let allDocuments = QuerySnapshot!.documents

                for riderDocument in allDocuments {

                    let data = riderDocument.data()

                    // Get the rider list
                    guard let riderList  = data["game_type_riders"] as? [Any] else { return }


                    guard let x = riderList[0] as? [String: Any] else { return }

                    guard var riderName =  x["name"] as? String else { return }
                    var y = ""

                }