android - 如何使用 JsonArray 的 gson 创建模型类，其中数组是变量而不是常量 android

Question

{
"801345": [{
    "type": "FOOTBALL",
    "name": "A",
    "id": "1"
}, {
    "type": "FOOTBALL",
    "name": "B",
    "id": "2"
},{
    "type": "CRICKET",
    "name": "C",
    "id": "3"
}, {
    "type": "VOLLEY",
    "name": "D",
    "id": "4"
}]

{
"910358": [{
    "type": "FOOTBALL",
    "name": "A",
    "id": "1"
}, {
    "type": "FOOTBALL",
    "name": "B",
    "id": "2"
},{
    "type": "CRICKET",
    "name": "C",
    "id": "3"
}, {
    "type": "VOLLEY",
    "name": "D",
    "id": "4"
}]

这里的团队数组不是常量而是变量。团队是从下拉列表中选择的，不同的团队有不同的 Id。如何使用变量数组创建模型类。 team id 是不同的像这里 910358,801345

Answer 1

使用this用于创建 POJO 类的站点 http://www.jsonschema2pojo.org/

更新

我创建了一个方法来解析这种类型的 json。试试这个

    private ArrayList<Teams> teamsJsonParsing(String json) throws JSONException {

          /*json="{\n" +
                "\"801345\": [{\n" +
                "    \"type\": \"FOOTBALL\",\n" +
                "    \"name\": \"A\",\n" +
                "    \"id\": \"1\"\n" +
                "}, {\n" +
                "    \"type\": \"FOOTBALL\",\n" +
                "    \"name\": \"B\",\n" +
                "    \"id\": \"2\"\n" +
                "},{\n" +
                "    \"type\": \"CRICKET\",\n" +
                "    \"name\": \"C\",\n" +
                "    \"id\": \"3\"\n" +
                "}, {\n" +
                "    \"type\": \"VOLLEY\",\n" +
                "    \"name\": \"D\",\n" +
                "    \"id\": \"4\"\n" +
                "}]\n" +
                ",\n" +
                "\n" +
                "\n" +
                "\"910358\": [{\n" +
                "    \"type\": \"FOOTBALL\",\n" +
                "    \"name\": \"A\",\n" +
                "    \"id\": \"1\"\n" +
                "}, {\n" +
                "    \"type\": \"FOOTBALL\",\n" +
                "    \"name\": \"B\",\n" +
                "    \"id\": \"2\"\n" +
                "},{\n" +
                "    \"type\": \"CRICKET\",\n" +
                "    \"name\": \"C\",\n" +
                "    \"id\": \"3\"\n" +
                "}, {\n" +
                "    \"type\": \"VOLLEY\",\n" +
                "    \"name\": \"D\",\n" +
                "    \"id\": \"4\"\n" +
                "}]\n" +
                "}";
*/


        JSONObject jsonObject=new JSONObject(json);
        Iterator itr =jsonObject.keys();
        Gson gson=new Gson();
        ArrayList<Teams> teamsArrayList=new ArrayList<>();
        while(itr.hasNext()) {
            Object element = itr.next();
            Log.e("iterator",jsonObject.getJSONArray(element.toString()).toString());
            Teams teams=new Teams();
            teams.setTeamName(element.toString());
            ArrayList<Team> teamArrayList=new ArrayList<>();
            JSONArray jsonArray=jsonObject.getJSONArray(element.toString());
          for (int i=0;i<jsonArray.length();i++){
              Team team=gson.fromJson(jsonArray.getJSONObject(i).toString(),Team.class);
              teamArrayList.add(team);
          }
          teams.setTeam(teamArrayList);
            teamsArrayList.add(teams);

        }
        return teamsArrayList;
    }

示例用法

 try {
        ArrayList<Teams> teamses= teamsJsonParsing(json);
        Log.e("team",teamses.size()+"");
    } catch (JSONException e) {
        e.printStackTrace();
    }

你的模型类是

 public class Team {

    @SerializedName("type")
    @Expose
    private String type;
    @SerializedName("name")
    @Expose
    private String name;
    @SerializedName("id")
    @Expose
    private String id;

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

}

public class Teams {

   String teamName ;

    public String getTeamName() {
        return teamName;
    }

    public void setTeamName(String teamName) {
        this.teamName = teamName;
    }

    private List<Team> team = null;

    public List<Team> getTeam() {
        return team;
    }

    public void setTeam(List<Team> team) {
        this.team = team;
    }

}