如何从嵌套的json数组android获取数据 [英] How to get data from nested json array android

问题描述

到目前为止，我正在尝试获取嵌套json数组的数据，但未成功.也许有人对如何正确地做一个想法或方向.我的代码是 挑战班

i am trying to get data of nested json array without success so far. maybe someone have an idea or direction how to do it right. my code is Challenge class

public class ChallengeModel {

private String ChallengeID;
private String ChallengeDate;
private String ChallengeName;
private String ChallengeIcon;
private String BetID;
private ChallengeItem challengeItem[];

public String getChallengeID() { return ChallengeID; }
public void setChallengeID(String challengeID) {
    ChallengeID = challengeID;
}
public String getChallengeDate() {
    return ChallengeDate;
}
public void setChallengeDate(String challengeDate) {
    ChallengeDate = challengeDate;
}
public String getChallengeName() {
    return ChallengeName;
}
public void setChallengeName(String challengeName) {
    ChallengeName = challengeName;
}
public String getChallengeIcon() {
    return ChallengeIcon;
}
public void setChallengeIcon(String challengeIcon) {
    ChallengeIcon = challengeIcon;
}
public String getBetID() {
    return BetID;
}
public void setBetID(String betID) {
    BetID = betID;
}
public ChallengeItem[] getChallengeItem() {
    return challengeItem;
}
public void setChallengeItem(ChallengeItem[] challengeItem) { 
this.challengeItem = challengeItem; }}

在上面的类中，有一个嵌套类的数组

In the above class there is an Array of nested class

public class ChallengeItem {

private String ChallengeItemID;
private String ChallengeID;
private String MatchID;
private String TeamAName;
private String TeamBName;
private String TeamAScore;
private String TeamBScore;
private String MatchDate;
private String MatchTime;
private String Venue;
private String VenuCity;
private String TeamAValue;
private String TeamBValue;

public String getChallengeItemID() {
    return ChallengeItemID;
}

public void setChallengeItemID(String challengeItemID) {
    ChallengeItemID = challengeItemID;
}

public String getChallengeID() {
    return ChallengeID;
}

public void setChallengeID(String challengeID) {
    ChallengeID = challengeID;
}

public String getMatchID() {
    return MatchID;
}

public void setMatchID(String matchID) {
    MatchID = matchID;
}

public String getTeamAName() {
    return TeamAName;
}

public void setTeamAName(String teamAName) {
    TeamAName = teamAName;
}

public String getTeamBName() {
    return TeamBName;
}

public void setTeamBName(String teamBName) {
    TeamBName = teamBName;
}

public String getTeamAScore() {
    return TeamAScore;
}

public void setTeamAScore(String teamAScore) {
    TeamAScore = teamAScore;
}

public String getTeamBScore() {
    return TeamBScore;
}

public void setTeamBScore(String teamBScore) {
    TeamBScore = teamBScore;
}

public String getMatchDate() {
    return MatchDate;
}

public void setMatchDate(String matchDate) {
    MatchDate = matchDate;
}

public String getMatchTime() {
    return MatchTime;
}

public void setMatchTime(String matchTime) {
    MatchTime = matchTime;
}

public String getVenue() {
    return Venue;
}

public void setVenue(String venue) {
    Venue = venue;
}

public String getVenuCity() {
    return VenuCity;
}

public void setVenuCity(String venuCity) {
    VenuCity = venuCity;
}

public String getTeamAValue() {
    return TeamAValue;
}

public void setTeamAValue(String teamAValue) {
    TeamAValue = teamAValue;
}

public String getTeamBValue() {
    return TeamBValue;
}

public void setTeamBValue(String teamBValue) {
    TeamBValue = teamBValue;
}

public String getDrawValue() {
    return DrawValue;
}

public void setDrawValue(String drawValue) {
    DrawValue = drawValue;
}

private String DrawValue;
}

我的问题是，我如何将数据从json获取到嵌套数组(第一个数组工作得很好)

My question is, how do i get the data from json to the nested array (The first array is working great)

public class ChallengeJsonConvert {

public static List<ChallengeModel> challengesRequest(String content){
    try {

        JSONArray challengesArray = new JSONArray(content);

        List<ChallengeModel> challengeModelList = new ArrayList<>();

        for(int i = 0; i < challengesArray.length(); i++){

            JSONObject obj = challengesArray.getJSONObject(i);
            ChallengeModel challenge = new ChallengeModel();
            challenge.setBetID(obj.getString("BetID"));
            challenge.setChallengeDate(obj.getString("ChallengeDate"));
            challenge.setChallengeIcon(obj.getString("ChallengeIcon"));
            challenge.setChallengeID(obj.getString("ChallengeID"));
            challenge.setChallengeName(obj.getString("ChallengeName"));
            challengeModelList.add(challenge);

        }
        return challengeModelList;
    } catch (JSONException e) {
        e.printStackTrace();
        return null;
    }
}
}

这是服务器的结果

[
{
"ChallengeID": "1",
"ChallengeDate": "18/07/2017",
"ChallengeName": "New Challenge Arrived",
"ChallengeIcon": "icon.jpg",
"BetID": "3",
"challengeItem": [
  {
    "CallengeItemID": "5",
    "ChallengeID": "1",
    "MatchID": "845",
    "TeamAName": "FC Copenhagen (Den)",
    "TeamBName": "Zilina (Svk)",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "Telia Parken (København)",
    "VenueCity": "København",
    "MatchTime": "17:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "6",
    "ChallengeID": "1",
    "MatchID": "844",
    "TeamAName": "Samtredia (Geo)",
    "TeamBName": "Qarabag (Aze)",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "Boris Paichadze Dinamo Arena (Tbilisi)",
    "VenueCity": "Tbilisi",
    "MatchTime": "17:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "7",
    "ChallengeID": "1",
    "MatchID": "843",
    "TeamAName": "Alashkert (Arm)",
    "TeamBName": "BATE (Blr)",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "",
    "VenueCity": "",
    "MatchTime": "16:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "8",
    "ChallengeID": "1",
    "MatchID": "842",
    "TeamAName": "Vardar (Mac)",
    "TeamBName": "Malmo FF (Swe)",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "",
    "VenueCity": "",
    "MatchTime": "16:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "9",
    "ChallengeID": "1",
    "MatchID": "841",
    "TeamAName": "FC Astana (Kaz)",
    "TeamBName": "Spartaks (Lat)",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "",
    "VenueCity": "",
    "MatchTime": "14:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  }
]
},
{
"ChallengeID": "2",
"ChallengeDate": "18/07/2017",
"ChallengeName": "Tuesday Funday",
"ChallengeIcon": "icon.jpg",
"BetID": "3",
"challengeItem": [
  {
    "CallengeItemID": "1",
    "ChallengeID": "2",
    "MatchID": "851",
    "TeamAName": "Lokomotiv Moscow",
    "TeamBName": "Arsenal Tula",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "Stadion Lokomotiv (Moskva)",
    "VenueCity": "Moskva",
    "MatchTime": "16:30",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "2",
    "ChallengeID": "2",
    "MatchID": "853",
    "TeamAName": "Dinamo Moskva",
    "TeamBName": "Spartak Moskva",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "Arena Khimki (Khimki)",
    "VenueCity": "Khimki",
    "MatchTime": "16:30",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "3",
    "ChallengeID": "2",
    "MatchID": "852",
    "TeamAName": "Spartak Moscow",
    "TeamBName": "Dynamo Moscow",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "Otkrytiye Arena (Moskva)",
    "VenueCity": "Moskva",
    "MatchTime": "16:30",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  },
  {
    "CallengeItemID": "4",
    "ChallengeID": "2",
    "MatchID": "849",
    "TeamAName": "Vorskla Poltava",
    "TeamBName": "Shakhtar Donetsk",
    "TeamAScore": "0",
    "TeamBScore": "0",
    "MatchDate": "18.07.2017",
    "Venue": "",
    "VenueCity": "",
    "MatchTime": "16:00",
    "TeamAValue": "5.5",
    "DrawValue": "3.05",
    "TeamBValue": "1.35"
  }
]
}
]
]

推荐答案

使用列表在您的类副本中进行更改并生成getter setter

Use list made changes in your class copy and generate getter setter

挑战模型

public class ChallengeModel {
    private String ChallengeID;
    private String ChallengeDate;
    private String ChallengeName;
    private String ChallengeIcon;
    private String BetID;
    private List<ChallengeItem> challengeItem;
    //TODO
    //Generate Getter and setter
}

挑战项目

public class ChallengeItem {
    private String ChallengeItemID;
    private String ChallengeID;
    private String MatchID;
    private String TeamAName;
    private String TeamBName;
    private String TeamAScore;
    private String TeamBScore;
    private String MatchDate;
    private String MatchTime;
    private String Venue;
    private String VenuCity;
    private String TeamAValue;
    private String TeamBValue;
    //TODO
    //Generate Getter and setter
}

ChallengeJsonConvert

public class ChallengeJsonConvert {
    public static List<ChallengeModel> challengesRequest(String content) {
        try {
            JSONArray challengesArray = new JSONArray(content);
            List<ChallengeModel> challengeModelList = new ArrayList<>();
            for (int i = 0; i < challengesArray.length(); i++) {
                JSONObject obj = challengesArray.getJSONObject(i);
                ChallengeModel challenge = new ChallengeModel();
                challenge.setBetID(obj.getString("BetID"));
                challenge.setChallengeDate(obj.getString("ChallengeDate"));
                challenge.setChallengeIcon(obj.getString("ChallengeIcon"));
                challenge.setChallengeID(obj.getString("ChallengeID"));
                challenge.setChallengeName(obj.getString("ChallengeName"));
                JSONArray challengeItemArray = obj.getJSONArray("challengeItem");
                for (int j = 0; j < challengeItemArray.length(); j++) {

                    JSONObject challengeObject = challengeItemArray.getJSONObject(j);
                    ChallengeItem challengeItem = new ChallengeItem();
                    challengeItem.setChallengeItemID(challengeObject.getString("CallengeItemID"));
                    //TODO 
                    //Get other object and set into challengeItem 
                    challenge.getChallengeItem().add(challengeItem);
                }

                challengeModelList.add(challenge);
            }
            return challengeModelList;
        } catch (JSONException e) {
            e.printStackTrace();
            return null;
        }
    }
}

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