Question

目前，我正在使用Swift平台构建应用程序。我需要显示静态数据，如对象结构数组，因为我需要在UITableView部分和行上加载数据。下面是目标C中对象结构的示例数组。我需要在Swift中复制相同的东西。

NSArray *dummyArray = [[NSArray alloc] initWithObjects:
                       [[NSDictionary alloc] initWithObjectsAndKeys:@"India",@"team",@"280",@"score",@"5",@"wickets", nil],
                       [[NSDictionary alloc] initWithObjectsAndKeys:@"SouthAfrica",@"team",@"279",@"score",@"9",@"wickets", nil],
                       nil];

NSMutableArray *demoArrayOfObjects = [[NSMutableArray alloc] initWithObjects:
                                      [[NSDictionary alloc] initWithObjectsAndKeys:@"17-03-2018",@"date",@"Ind win by 5 wickets",@"result",@"SouthAfrica",@"Place",dummyArray,@"data", nil], nil];

NSLog(@"demoArrayOfObjects = %@",demoArrayOfObjects);

输出：

demoArrayOfObjects = (
    {
    Place = SouthAfrica;
    data =         (
                    {
            score = 280;
            team = India;
            wickets = 5;
        },
                    {
            score = 279;
            team = SouthAfrica;
            wickets = 9;
        }
    );
    date = "17-03-2018";
    result = "Ind win by 5 wickets";
    }
)

Answer 1

尝试一下，用swift 4编写

let dataDictionary1 = ["team": "India", "score": "280", "wickets": "5"]
let dataDictionary2 = ["team": "SouthAfrica", "score": "279", "wickets": "9"]
let dummyArray = [dataDictionary1, dataDictionary2]

let fullDictionary = ["date": "17-03-2018", "result": "Ind win by 5 wickets", "Place": "SouthAfrica", "data": dummyArray] as [String : Any]
let demoArrayOfObjects = [fullDictionary]

print(demoArrayOfObjects)

转换json：

if let jsonData = try? JSONSerialization.data(withJSONObject: demoArrayOfObjects, options: []) {
    if let jsonString = String(data: jsonData, encoding: String.Encoding.utf8) {
        print("json - \(jsonString)")
    }
}

Answer 2

这个sudo代码可能会帮助你在swift中实现数据源。

func prepareMatchInfo（） - ＆gt;阵列＆GT; {

    var arrayOfMatches : Array<Dictionary<String,Any>> = Array<Dictionary<String,String>>();

    var arrayOfScores : Array<Dictionary<String,String>> = Array<Dictionary<String,String>>();
    arrayOfScores.append(getTeamScore(teamName: "India", score: "280", wickets: "5"));
    arrayOfScores.append(getTeamScore(teamName: "South Africa", score: "279", wickets: "6"));

    arrayOfMatches.append(getMatchInfo(place: "South Africa", data: arrayOfScores, date: Date(), result: "India Won by 5 Wickets"));

    return arrayOfMatches;
}

func getMatchInfo (place:String, data:Array<Dictionary<String,String>>, date:Date, result:String) -> Dictionary<String, Any>{
    var dict : Dictionary<String, Any> = Dictionary();
    dict["Place"] = place;
    dict["Data"] = data;
    dict["Date"] = date;
    dict["Result"] = result;
    return dict;
}

func getTeamScore (teamName:String, score:String, wickets:String) -> Dictionary<String, String>{
    var dict : Dictionary<String, String> = Dictionary();
    dict["TeamName"] = teamName;
    dict["Score"] = score;
    dict["Wickets"] = wickets;
    return dict;
}

Answer 3

我会创建一个符合Encodable协议的结构数组，而不是使用字典：

注意：仅限Swift 4

Apple的更多信息：https://developer.apple.com/documentation/foundation/archives_and_serialization/encoding_and_decoding_custom_types

struct CricketData : Encodable {
   let country: String
   let score: Int
   let wickets: Int
}

struct Tournament : Encodable {
   let data: [CricketData]
   let hostCountry: String
   let result: String
   let date: Date
}

let array = [Tournament] // here you should create your data array with all the info about the games
let jsonEncoder = JSONEncoder()
let jsonData = try jsonEncoder.encode(array)

如何使用swift 4中的对象数组等结构形成静态数据？

3 个答案: