НЕУСТРАНИМОЕ ИСКЛЮЧЕНИЕ: AsyncTask # 4 java.lang.RuntimeException: произошла ошибка при выполнении doInBackground(). ⇐ Android

[Anonymous]

Пожалуйста, помогите мне, я не знаю, как это решить, у меня ошибка в коде, вот такое сообщение:

Код: Выделить всё

2020-08-24 15:29:36.424 25891-26358/com.cryptbrn.treasify E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #4
Process: com.cryptbrn.treasify, PID: 25891
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:353)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
at org.json.JSONTokener.nextCleanInternal(JSONTokener.java:116)
at org.json.JSONTokener.nextValue(JSONTokener.java:94)
at org.json.JSONObject.(JSONObject.java:159)
at org.json.JSONObject.(JSONObject.java:176)
at com.cryptbrn.treasify.fragment.LocationFragment$ParserTask.doInBackground(LocationFragment.java:252)
at com.cryptbrn.treasify.fragment.LocationFragment$ParserTask.doInBackground(LocationFragment.java:245)
at android.os.AsyncTask$2.call(AsyncTask.java:333)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) 
at java.lang.Thread.run(Thread.java:764) 
2020-08-24 15:29:36.478 25891-25950/com.cryptbrn.treasify V/FA: Recording user engagement, ms: 5494
2020-08-24 15:29:36.520 25891-25950/com.cryptbrn.treasify V/FA: Activity paused, time: 607133467
2020-08-24 15:29:36.626 25891-25985/com.cryptbrn.treasify D/OpenGLRenderer: endAllActiveAnimators on 0x78542af000 (RippleDrawable) with handle 0x7854112e80
2020-08-24 15:29:38.098 25891-26121/com.cryptbrn.treasify W/OkHttpClient: A connection to https://firebasestorage.googleapis.com/ was leaked. Did you forget to close a response body?
2020-08-24 15:29:38.098 25891-26121/com.cryptbrn.treasify W/OkHttpClient: A connection to https://firebasestorage.googleapis.com/ was leaked. Did you forget to close a response body?
2020-08-24 15:29:38.098 25891-26121/com.cryptbrn.treasify W/OkHttpClient: A connection to https://maps.googleapis.com/ was leaked.  Did you forget to close a response body?
2020-08-24 15:29:38.532 25891-25950/com.cryptbrn.treasify D/FA: Application going to the background

LocationFragment.java

Код: Выделить всё

package com.cryptbrn.treasify.fragment;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;
import androidx.fragment.app.Fragment;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.cryptbrn.treasify.InsertPostActivity;
import com.cryptbrn.treasify.JsonParser;
import com.cryptbrn.treasify.R;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.MapsInitializer;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.tasks.OnSuccessListener;
import com.google.android.gms.tasks.Task;
import com.google.android.material.floatingactionbutton.FloatingActionButton;

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

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.HashMap;
import java.util.List;

/**
* A simple {@link Fragment} subclass.
* Use the {@link LocationFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class LocationFragment extends Fragment implements OnMapReadyCallback {

GoogleMap mMap;
MapView mapView;
FusedLocationProviderClient fusedLocationProviderClient;
double currentLat = 0, currentLong = 0;

// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g.  ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";

// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;

public LocationFragment() {
// Required empty public constructor
}

/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment LocationFragment.
*/
// TODO: Rename and change types and number of parameters
public static LocationFragment newInstance(String param1, String param2) {
LocationFragment fragment = new LocationFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_location, container, false);

fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(getActivity());

if (ActivityCompat.checkSelfPermission(getActivity()
, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
getCurrentLocation();
}else {
ActivityCompat.requestPermissions(getActivity()
,new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 44);
}

FloatingActionButton btnBank = (FloatingActionButton) view.findViewById(R.id.btn_flea);
btnBank.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url = "https://maps.googleapis.com/maps/api/..." +
"?location=" + currentLat + "," + currentLong +
"&radius=5000" + "&type=" + "kfc"+
"&sensor=true" + "&key=" + getResources().getString(R.string.google_api_key);

new PlaceTask().execute(url);
}
});

FloatingActionButton btnFlea = (FloatingActionButton) view.findViewById(R.id.btn_bank);
btnFlea.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url = "https://maps.googleapis.com/maps/api/..." +
"?location=" + currentLat + "," + currentLong +
"&radius=5000" + "&type=" + "bank_sampah"+
"&sensor=true" + "&key=" + getResources().getString(R.string.google_api_key);

new PlaceTask().execute(url);
}
});

FloatingActionButton button = (FloatingActionButton) view.findViewById(R.id.btn_list);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), InsertPostActivity.class);
startActivity(intent);
}
});

return view;
}

private void getCurrentLocation() {
Task  task = fusedLocationProviderClient.getLastLocation();
task.addOnSuccessListener(new OnSuccessListener() {
@Override
public void onSuccess(Location location) {
if (location != null){
currentLat = location.getLatitude();
currentLong = location.getLongitude();

}
}
});

}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mapView = view.findViewById(R.id.mapView);

if(mapView != null){
mapView.onCreate(null);
mapView.onResume();
mapView.getMapAsync(this);
}

}

@Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mMap = googleMap;

mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(
new LatLng(currentLat,currentLong), 40
));

}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if (requestCode == 44){
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
getCurrentLocation();
}
}
}

private class PlaceTask extends AsyncTask {
@Override
protected String doInBackground(String... strings) {
String data = null;
try {
data = downloadUrl(strings[0]);
} catch (IOException e) {
e.printStackTrace();
}
return data;
}

@Override
protected void onPostExecute(String s) {
new ParserTask().execute(s);
}
}

private String downloadUrl(String string) throws IOException {
URL url = new URL(string);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.connect();
InputStream stream = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(stream));
StringBuilder builder = new StringBuilder();
String line = "";
while ((line = reader.readLine()) != null){
builder.append(line);
}
String data = builder.toString();
reader.close();
return data;

}

private class ParserTask extends AsyncTask {
@Override
protected List doInBackground(String...  strings) {
JsonParser jsonParser = new JsonParser();
List mapList = null;
JSONObject object = null;
try {
object = new JSONObject(strings[0]);
mapList = jsonParser.parseResult(object);
}catch (JSONException e){
e.printStackTrace();
}
return mapList;
}

@Override
protected void onPostExecute(List hashMaps) {
mMap.clear();
for (int i=0; i

Подробнее здесь: [url]https://stackoverflow.com/questions/63557602/fatal-exception-asynctask-4-java-lang-runtimeexception-an-error-occurred-whil[/url]