java - 如何根据值JSON设置选择项？

Question

我有两个 JSON 数据，一个是用户的 JSON，另一个是微调器的 JSON:

这是用户的 JSON

{
    "taxonomy":{
        "User":[
            {
                "ID":112,
                "name":"Tanaka",
                "city":12

            },
            {
                "ID":113,
                "name":"Sugimoto",
                "city":12
            }
        ]
    } 
}

这是 Spinner 的 JSON

{
    "taxonomy":{
        "City":[
            {
                "city_id":12,
                "name":"Jakarta"

            },
            {
                "city_id":13,
                "name":"Jakarta"
            }
        ]
    } 
}

我已经将 JSON 解析为 spinner

for (int i=0; i<data_city.length();i++){
    JSONObject listcity = data_city.getJSONObject(i);
    Spin_city modelcity = new Spin_kecamatandesa(
        listkec.getInt("city_id"),
        listkec.getString("name")
    );

    Str_array_kec.add(modelcity);
}

SpinnAdapter adapterspin = new SpinnAdapter(getApplicationContext(), 
    android.R.layout.simple_spinner_dropdown_item, Str_array_kec);
spn_edt_kec.setAdapter(adapterspin);

这是我的适配器

public class SpinnAdapter extends ArrayAdapter<Spin_city> {
    private ArrayList<Spin_city> myarrayList;

    public adapterDesa(@NonNull Context context, int textViewResourceId, ArrayList<Spin_city> modelarrayList) {
        super(context, textViewResourceId, modelarrayList);
        this.myarrayList = modelarrayList;
    }

    @Override
    public View getDropDownView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        return getCustomView(position, parent);
    }

    @Nullable
    @Override
    public Spin_city getItem(int position) {
        return myarrayList.get(position);
    }

    @Override
    public int getCount() {
        int count = myarrayList.size();

        return count;
    }


    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        return getCustomView(position, parent);
    }

    private View getCustomView(int position, ViewGroup parent) {
        Spin_city model = getItem(position);

        View spinnerRow = LayoutInflater.from(parent.getContext()).inflate(android.R.layout.simple_spinner_dropdown_item, parent, false);
        TextView label = spinnerRow.findViewById(android.R.id.text1);
        label.setText(String.format("%s", model != null ? model.getName_city(): ""));
        return spinnerRow;
    }

我的问题是如何根据 JSON 用户在微调器上设置选择项(例如“city”等于“city_id”)，谁能帮忙这个

Answer 1

要检查用户和微调器 JSON 键的相等性，您必须将两个 ArrayList 传递到适配器，以便可以检查相等的值