解析 JSON：Android 中的嵌套对象

我对 Android 很陌生。我正在尝试解析 JSON url。但是我收到以下错误“Json 解析错误：非官方摘要没有价值”。这是我得到的回应。

来自 url 的响应：{"success":true,"data":{"summary":{"total":15616130,"confirmedCasesIndian":15616082,"confirmedCasesForeign":48,"discharged":13276039,"deaths":182 ,"confirmedButLocationUnidentified":0},"unofficial-summary":[{"source":"covid19india.org","total":7945975,"recovered":7198877,"deaths":119538,"active":626192} ],"地区":[{"loc":"安达曼和尼科巴群岛","confirmedCasesIndian":5466,"confirmedCasesForeign":0,"discharged":5243,"deaths":64,"totalConfirmed":5466}, {"loc":"Andhra Pradesh","confirmedCasesIndian":976987,"confirmedCasesForeign":0,"出院":915626,"死亡人数":7472,"totalConfirmed":976987},{"loc":"Arunachal Pradesh","confirmedCasesIndian":17113,"confirmedCasesForeign":0,"discharged":16835:"deaths" 56,"totalConfirmed":17113},{"loc":"Assam","confirmedCasesIndian":227473,"confirmedCasesForeign":0,"discharged":217296,"deaths":1145,"totalConfirmed"},227473 "loc":"Bihar","confirmedCasesIndian":342059,"confirmedCasesForeign":0,"discharged":283863,"deaths":1841,"totalConfirmed":342059},{"loc":"Chandigarh","dianConfirmedCases ":35148,"confirmed CasesForeign":0,"出院":30768,"死亡人数":421,"totalConfirmed":35148},{"loc":"Chhattisgarh","confirmedCasesIndian":574299,"confirmedCasesForeign":0,"discharged":442337,"deaths":6274,"totalConfirmed":574"loc99} ":"Dadra and Nagar Haveli and Daman and Diu","confirmedCasesIndian":5422,"confirmedCasesForeign":0,"discharged":4047,"deaths":4,"totalConfirmed":5422},{"loc":"德里","confirmedCasesIndian":905540,"confirmedCasesForeign":1,"discharged":807328,"deaths":12638,"totalConfirmed":905541},{"loc":"Goa","confirmedCases11","693 ConfirmedCasesForeign":1,"discharged":60145,"deaths":926,"totalConfirmed":69312},{"loc":"Gujarat","confirmedCasesIndian":428177,"confirmedCasesForeign":1,"discharged":346063,"deaths":5615,"totalConfirmed":428178},{"loc":"Haryana ","confirmedCasesIndian":371610,"confirmedCasesForeign":14,"discharged":318369,"deaths":3483,"totalConfirmed":371624},{"loc":"Himachal Pradesh","confirmedCasesIndian": ConfirmedCasesForeign":0,"discharged":68164,"deaths":1219,"totalConfirmed":79410},{"loc":"Jammu and Kashmir","confirmedCasesIndian":150238,"confirmedCasesForeign":0,"discharge" ：134697，“死亡人数”：2071，“总确认”：150238}，{“loc”：“Jharkhand","confirmedCasesIndian":172315,"confirmedCasesForeign":0,"discharged":137590,"deaths":1547,"totalConfirmed":172315},{"loc":"Karnataka","confirmedCasesForeign":0,"discharged":137590,"deaths":1547 ConfirmedCasesForeign":0,"discharged":1025821,"deaths":13646,"totalConfirmed":1198644},{"loc":"Kerala","confirmedCasesIndian":1272637,"confirmedCasesForeign":8"87114discharge ,"死亡人数":4978,"totalConfirmed":1272645},{"loc":"Ladakh","confirmedCasesIndian":12556,"confirmedCasesForeign":0,"discharged":10610,"deaths":134,"totalConfirmed :12556},{"loc":"Lakshadweep","ConfirmedCasesIndian":1335,"confirmedCasesForeign":0,"discharged":817,"deaths":1,"totalConfirmed":1335},{"loc":"Madhya Pradesh","confirmedCasesIndian":433704,"confirmed"CasesFore 0,"出院":350720,"死亡人数":4713,"总确认":433704},{"loc":"Maharashtra","confirmedCasesIndian":3960356,"confirmedCasesForeign":3,"discharged":321346 ":61343,"totalConfirmed":3960359},{"loc":"Manipur","confirmedCasesIndian":29869,"confirmedCasesForeign":0,"discharged":29106,"deaths":378,"totalConfirmed"}29 ,{"loc":"Meghalaya","confirmedCasesIndian":15116,"ConfirmedCasesForeign":0,"discharged":14105,"deaths":154,"totalConfirmed":15116},{"loc":"Mizoram","confirmedCasesIndian":5085,"confirmedCasesForeign":0,"discharged":4569 ,"死亡人数":12,"totalConfirmed":5085},{"loc":"Nagaland","confirmedCasesIndian":12650,"confirmedCasesForeign":0,"discharged":12299,"deaths":94,"totalConfirmed" :12650},{"loc":"Odisha","confirmedCasesIndian":377464,"confirmedCasesForeign":0,"discharged":349377,"deaths":1953,"totalConfirmed":377464},{"loc":" Puducherry","confirmed CasesIndian":48974,"confirmedCasesForeign":0,"discharged":43184,"死亡人数":717,"totalConfirmed":48974},{"loc":"Punjab","confirmedCasesIndian":309316,"confirmedCasesForeign":0,"discharged":264562,"deaths":8045,"t

我做错了什么？

package com.sudarshan.jsonparse2;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;

public class MainActivity extends AppCompatActivity {

    private String TAG = MainActivity.class.getSimpleName();
    private ListView lv;

    ArrayList<HashMap<String, String>> contactList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        contactList = new ArrayList<>();
        lv = (ListView) findViewById(R.id.list);

        new GetContacts().execute();
    }

    private class GetContacts extends AsyncTask<Void, Void, Void> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            Toast.makeText(MainActivity.this,"Json Data is downloading",Toast.LENGTH_LONG).show();

        }

        @Override
        protected Void doInBackground(Void... arg0) {
            HttpHandler sh = new HttpHandler();
            // Making a request to url and getting response
            String url = "https://api.rootnet.in/covid19-in/stats/latest";
            String jsonStr = sh.makeServiceCall(url);

            Log.e(TAG, "Response from url: " + jsonStr);
            if (jsonStr != null) {
                try {
                    JSONObject jsonObj = new JSONObject(jsonStr);

                    // Getting JSON Array node
                    JSONObject c  = jsonObj.getJSONArray("unofficial-summary").getJSONObject(0);
                    String source = c.getString("source");
                        int total = c.getInt("total");
                        int recovered = c.getInt("recovered");
                        int deaths = c.getInt("deaths");
                        int active = c.getInt("active");


                        // tmp hash map for single contact
                        HashMap<String, String> summary = new HashMap<>();

                        // adding each child node to HashMap key => value
                        summary.put("source", "source: "+source);
                        summary.put("total", "total:" +String.valueOf(total));
                        summary.put("recovered", "recovered" +String.valueOf(recovered));
                        summary.put("deaths", "deaths" + String.valueOf(deaths));
                        summary.put("active", "active" + String.valueOf(active));

                        // adding contact to contact list
                        contactList.add(summary);

                } catch (final JSONException e) {
                    Log.e(TAG, "Json parsing error: " + e.getMessage());
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            Toast.makeText(getApplicationContext(),
                                    "Json parsing error: " + e.getMessage(),
                                    Toast.LENGTH_LONG).show();
                        }
                    });

                }

            } else {
                Log.e(TAG, "Couldn't get json from server.");
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Couldn't get json from server. Check LogCat for possible errors!",
                                Toast.LENGTH_LONG).show();
                    }
                });
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void result) {
            super.onPostExecute(result);
            ListAdapter adapter = new SimpleAdapter(MainActivity.this, contactList,
                    R.layout.list_item, new String[]{ "source","total","recovered","deaths","active"},
                    new int[]{R.id.source, R.id.total,R.id.recovered,R.id.deaths,R.id.active});
            lv.setAdapter(adapter);
        }
    }
}