Develop Reference

No values from JSON

I'd like to display values from my JSON just for testing purposes, but I've received literally nothing. Where can be an issue? The link in Utils is correctly for sure, I've runned it on my browser, and everything was good.
Here's the code
Utils class
public class WeatherUtils {
public WeatherUtils(){}
public static ArrayList<Weather> getHourlyData (double minTemp, double maxTemp, double currentTemp, double airPressure){
ArrayList<Weather> weatherList = new ArrayList<>();
try {
JSONObject reader = new JSONObject("https://api.openweathermap.org/data/2.5/forecast?q=London,us&units=metric&appid=ID...");
JSONArray array = reader.getJSONArray("list");
for (int i = 0; i<array.length(); i++){
JSONObject secondReader = array.getJSONObject(i);
JSONObject dataObject = secondReader.getJSONObject("main");
for (int j = 0; j<dataObject.length(); j++){
currentTemp = dataObject.getDouble("temp");
minTemp = dataObject.getDouble("temp_min");
maxTemp = dataObject.getDouble("temp_max");
airPressure = dataObject.getDouble("pressure");
}
weatherList.add(new Weather(currentTemp,minTemp,maxTemp,airPressure));
}
} catch (JSONException e) {
e.printStackTrace();
}
return weatherList;
}
}
MainActivity
Double a,b,c,d;
a = 0.0;
b = 0.0;
c = 0.0;
d = 0.0;
ArrayList<Weather> weathers = WeatherUtils.getHourlyData(a,b,c,d);
System.out.println(weathers);
JSON structure
{
"cod": "200",
"message": 0.0074,
"cnt": 40,
"list": [
{
"dt": 1559131200,
"main": {
"temp": 22.1,
"temp_min": 21.32,
"temp_max": 22.1,
"pressure": 1012.31,
"sea_level": 1012.31,
"grnd_level": 976.84,
"humidity": 92,
"temp_kf": 0.78
},
"weather": [
{
"id": 500,
"main": "Rain",
"description": "light rain",
"icon": "10d"
}
],
"clouds": {
"all": 89
},
"wind": {
"speed": 3.08,
"deg": 213.025
},
"rain": {
"3h": 0.875
},
"sys": {
"pod": "d"
},
"dt_txt": "2019-05-29 12:00:00"
},
{
Of course, there are more data. I've posted one "block"
How I may fix that?

Well, given that you just want to "test" the json parsing, you have few options but let's go with a simple one. But first, I would say to extract the parser and put it in its own class/method so it becomes easier to test, something like this:
public class WeatherUtils {
public WeatherUtils(){}
public static ArrayList<Weather> getHourlyData (double minTemp, double maxTemp, double currentTemp, double airPressure){
final ArrayList<Weather> weatherList = new ArrayList<>();
try {
final JSONObject response = httpCall();
weatherList = mapWeatherResponse(response);
} catch (JSONException e) {
e.printStackTrace();
}
return weatherList;
}
public static List<Weather> mapWeatherResponse(JSONObject reader){
final ArrayList<Weather> weatherList = new ArrayList<>();
JSONArray array = reader.getJSONArray("list");
for (int i = 0; i<array.length(); i++){
JSONObject secondReader = array.getJSONObject(i);
JSONObject dataObject = secondReader.getJSONObject("main");
for (int j = 0; j<dataObject.length(); j++){
currentTemp = dataObject.getDouble("temp");
minTemp = dataObject.getDouble("temp_min");
maxTemp = dataObject.getDouble("temp_max");
airPressure = dataObject.getDouble("pressure");
}
weatherList.add(new Weather(currentTemp,minTemp,maxTemp,airPressure));
}
}
}
Test the response parser with a junit test:
You can create a junit test like this:
public class WeatherUtilsTest {
#Test
public void parserResponseTEst() {
final List<String> expectedResponse = new ArrayList<>();
//fill the expectedResponse with the correspondent values
final String json = "{\n" +
" \"cod\": \"200\",\n" +
" \"message\": 0.0074,\n" +
" \"cnt\": 40,\n" +
" \"list\": [\n" +
" {\n" +
" \"dt\": 1559131200,\n" +
" \"main\": {\n" +
" \"temp\": 22.1,\n" +
" \"temp_min\": 21.32,\n" +
" \"temp_max\": 22.1,\n" +
" \"pressure\": 1012.31,\n" +
" \"sea_level\": 1012.31,\n" +
" \"grnd_level\": 976.84,\n" +
" \"humidity\": 92,\n" +
" \"temp_kf\": 0.78\n" +
" },\n" +
" \"weather\": [\n" +
" {\n" +
" \"id\": 500,\n" +
" \"main\": \"Rain\",\n" +
" \"description\": \"light rain\",\n" +
" \"icon\": \"10d\"\n" +
" }\n" +
" ],\n" +
" \"clouds\": {\n" +
" \"all\": 89\n" +
" },\n" +
" \"wind\": {\n" +
" \"speed\": 3.08,\n" +
" \"deg\": 213.025\n" +
" },\n" +
" \"rain\": {\n" +
" \"3h\": 0.875\n" +
" }\n" +
" }]\n" +
" }";
final List<String> response = WeatherUtils.mapWeatherResponse(new JSONObject(json));
assertEquals(expectedResponse, response);
}
}
There is nothing wrong with the JSONObject parser you are doing. You mentioned the link you are using in Utils is correct, do you get a proper response when you test it in your browser, postman, insomnia?
OBS JSONObject reader = new JSONObject("https://api..."); does not fetch anything, what you are doing there is creating a JSONObject from the given String, i.e. "https://....". To fetch the data you need to implement some http client. Here is an example https://stackoverflow.com/a/4457526/761668

You're not getting the response from the server, you're trying to initialize a JSONObject with the URL.
To retrieve it you should replace this line:
JSONObject reader = new JSONObject("https://api.openweathermap.org/data/2.5/forecast?q=London,us&units=metric&appid=ID...");
with this code:
HttpURLConnection conn = null;
String data = null;
try {
conn = (HttpURLConnection) new URL("https://api.openweathermap.org/data/2.5/forecast?q=London,us&units=metric&appid=ID...").openConnection();
conn.setRequestMethod("GET");
conn.connect();
BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line;
while ((line = br.readLine()) != null) {
sb.append(line + "\n");
}
br.close();
data = sb.toString();
} catch (Exception e) {
// do something
} finally {
if (conn != null) {
try {
conn.disconnect();
} catch (Exception ex) {
// do something
}
}
}
JSONObject reader = new JSONObject(data);
This code will retrieve the JSON object from the endpoint and convert it to a String object. Then you can create a JSONObject with it.

Showing data when multiple objects exist in JSON URL

I have a JSON File, showing the following:
{
"version": 2,
"locations": [{
"id": "750",
"geo": {
"name": "Lord Howe Island",
"state": "Lord Howe Island",
"country": {
"id": "au",
"name": "Australia"
},
"latitude": -31.557,
"longitude": 159.086
},
"astronomy": {
"objects": [{
"name": "moon",
"days": [{
"date": "2018-09-05",
"events": [],
"moonphase": "waningcrescent"
}]
}]
}
}]
}
I am attempting to show in a TextView the following fields:
name "Lord Howe Island"
latitude "-31.557"
longitude "159.086"
moonphase "waningcrescent"
I have tried the following:
JSONArray JA = new JSONArray(data);
for (int i = 0; i < JA.length(); i++){
JSONObject JO = (JSONObject) JA.get(i);
singleParsed = "Name:" + JO.get("name") + "\n" +
"Latitude:" + JO.get("latitude") + "\n" +
"Longitude:" + JO.get("longitude") + "\n" +
"Phase: " + JO.get("moonphase") + "\n";
}
But unfortunately I do not receive any results.
What am I doing wrong? Thanks very much for any help.
Edit - Full Code for assistance.
public class fetchData extends AsyncTask<Void, Void, Void> {
String data = "";
String dataParsed = "";
String singleParsed = "";
#Override
protected Void doInBackground(Void... voids) {
try {
URL url = new URL("example.com"); //Replace with API URL
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
while (line != null){
line = bufferedReader.readLine();
data = data + line;
}
JSONArray JA = new JSONArray(data);
for (int i = 0; i < JA.length(); i++) {
JSONObject JO = (JSONObject) JA.get(i);
JSONObject geo = JO.getJSONObject("geo");
JSONObject astronomy = JO.getJSONObject("astronomy");
singleParsed = "Name:" + geo.get("name") + "\n" +
"Latitude:" + JO.get("latitude") + "\n" +
"Longitude:" + JO.get("longitude") + "\n" +
"Phase: " + astronomy.get("moonphase") + "\n";
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
MainActivity.fetcheddata.setText(this.data);
}
}

Try this
JSONObject data=new JSONObject(data);
JSONArray JA = data.getJSONArray("locations");
for (int i = 0; i < JA.length(); i++){
JSONObject JO = (JSONObject) JA.get(i);
JSONObject geo=JO.getJSONObject("geo");
JSONObject astronomy=JO.getJSONObject("astronomy");
singleParsed = "Name:" + geo.get("name") + "\n" +
"Latitude:" + JO.get("latitude") + "\n" +
"Longitude:" + JO.get("longitude") + "\n" +
"Phase: " + astronomy.get("moonphase") + "\n";

instead of parsing JSON on your own use gson
Gson gson= new Gson();
YourBeanClass yourBeanClass gson.fromJson(jsonString,YourBeanClass.class)
Json to Java POJO
From above you can get as Bean class just use it to parse your Json.Using POJO to parse json is easy and less vulnerable to error/exception.
For your Json i tried getting the bean object and tried parsing.
And your code will also be more readable:
#Override
protected Void doInBackground(Void... voids) {
try {
URL url = new URL("example.com"); //Replace with API URL
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
while (line != null){
line = bufferedReader.readLine();
data = data + line;
}
Gson gson= new Gson();
YourBeanClass yourBeanClass gson.fromJson(jsonString,YourBeanClass.class)
//get and set all your data here from your bean
String country=yourBeanClass.getCountry()
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}

Your json parsing is wrong.First of all there is just one object in your json array there is no need of the for loop. You can access it directly using 0th index.
Second
JSONObject JO = (JSONObject) JA.get(i);
This line just gave you the 1st json object inside the array. You have to do one more step to fetch the name.
JSONObject geo=JO.getJSONObject("geo");
Now fetch the name from geo object.
"Name:" + geo.getString("name") + "\n"
Also remember your moonphase string is part of different array. So you need to parse that accordingly
You have to get value of the type defined in your json.For eg. for getting string type it will be
jsonObject.getString("key");
for integer it will be
jsonObject.getInt("key")

Extracting JSONObject fromJSONArray

working on an android application to try and connect to "steemit.com' and return JSON data to me.
Everything has been working so far, printing the mass response from the URL to the Textview, only I am now getting no errors, and no text printed out in the screen so I assume I am using the wrong type of object or something. Perhaps the data I am trying to retrieve is not an Array? What do you all think? Here is my code.
public class fetchdata extends AsyncTask<Void,Void,Void> {
String data = "";
String dataParsed = "";
String singleParsed = "";
#Override
protected Void doInBackground(Void... voids) {
{
try {
URL url = new URL("https://steemit.com/#curie.json");
HttpsURLConnection httpsURLConnection = (HttpsURLConnection) url.openConnection();
InputStream inputStream = httpsURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String lines = "";
while(lines != null){
lines = bufferedReader.readLine();
data = data + lines;
}
JSONArray JA = new JSONArray(data);
for (int i =0 ;i < JA.length(); i++){
JSONObject JO = (JSONObject) JA.get(i);
singleParsed = "User: " + JO.get("user") + "\n" +
"Location: " + JO.get("location") + "\n" +
"ID: " + JO.get("id")+"\n";
dataParsed = dataParsed + singleParsed;
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
followers.dataTV.setText(this.dataParsed);
}
}
and the page I expect the TextView to display data on.
public class followers extends AppCompatActivity {
public static TextView dataTV;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_followers);
ListView followList = (ListView)findViewById(R.id.followList);
dataTV = (TextView)findViewById(R.id.followersTVData);
fetchdata process = new fetchdata();
process.execute();
}
}
If I have not been clear, what the issue is, is that when I 'printText' using the variable 'data', there is no problems, and the bulk text is printed, however, I am now trying to break it down into bits, and it is just not printing anything when I use the variable 'dataParsed'. Any help is appreciated. Thank you in advance!
I have been asked for the response. Here it is, though rather long.
{"user":{"id":1026971,"name":"ceruleanblue","owner":{"weight_threshold":1,"account_auths":[],"key_auths":[["STM7UPr1LJMw4aAxcuiYAmad6bjjiaeDcfgSynRMrr5L6uvuSJLDJ",1]]},"active":{"weight_threshold":1,"account_auths":[],"key_auths":[["STM7qUaQCghsFZA37fTxVB4BqBBK49z35ni6pha1Kr4q4qLkrNRyH",1]]},"posting":{"weight_threshold":1,"account_auths":[["minnowbooster",1],["steemauto",1]],"key_auths":[["STM7qF27DSYNYjRu5Jayxxxpt1rtEoJLH6c1ekMwNpcDmGfsvko6z",1]]},"memo_key":"STM7wNQdNS9oPbVXscbzn7vfzjB7SwmLGQuFQNzZgatgpqvdKzWQZ","json_metadata":{"profile":{"profile_image":"https://cdn.steemitimages.com/DQmfNj7SLU1aBtV9UkJa5ZKMZPNuzR4ei5UJRA54JxFk99M/Mushrooms%20Trippy%20Art%20Fabric%20Cloth%20Rolled%20Wall%20Poster%20Print.jpg","name":"Cerulean's Chillzone","about":"IT Technician, Programmer, Day Trader, Night Toker.","location":"Ontario, Canada","cover_image":"https://cdn.steemitimages.com/DQmTwT379V7EcQ1ZkqkmJkpWyu4QXw1LzDinv9uoyixksMY/tumblr_static_tumblr_static__640.jpg"}},"proxy":"","last_owner_update":"2018-06-18T19:57:39","last_account_update":"2018-08-01T04:33:06","created":"2018-06-03T20:28:21","mined":false,"recovery_account":"steem","last_account_recovery":"1970-01-01T00:00:00","reset_account":"null","comment_count":0,"lifetime_vote_count":0,"post_count":321,"can_vote":true,"voting_power":9800,"last_vote_time":"2018-08-09T02:47:03","balance":"8.000 STEEM","savings_balance":"0.000 STEEM","sbd_balance":"1.979 SBD","sbd_seconds":"927621285","sbd_seconds_last_update":"2018-08-09T13:23:15","sbd_last_interest_payment":"2018-07-11T10:18:12","savings_sbd_balance":"0.000 SBD","savings_sbd_seconds":"2067163545","savings_sbd_seconds_last_update":"2018-07-23T08:58:48","savings_sbd_last_interest_payment":"2018-07-09T06:32:27","savings_withdraw_requests":0,"reward_sbd_balance":"0.000 SBD","reward_steem_balance":"0.000 STEEM","reward_vesting_balance":"0.000000 VESTS","reward_vesting_steem":"0.000 STEEM","vesting_shares":"167703.513691 VESTS","delegated_vesting_shares":"29412.000000 VESTS","received_vesting_shares":"0.000000 VESTS","vesting_withdraw_rate":"0.000000 VESTS","next_vesting_withdrawal":"1969-12-31T23:59:59","withdrawn":0,"to_withdraw":0,"withdraw_routes":0,"curation_rewards":182,"posting_rewards":110408,"proxied_vsf_votes":[0,0,0,0],"witnesses_voted_for":1,"last_post":"2018-08-07T12:43:42","last_root_post":"2018-08-07T12:25:39","average_bandwidth":"44620566375","lifetime_bandwidth":"1099256000000","last_bandwidth_update":"2018-08-09T13:23:15","average_market_bandwidth":3415484305,"lifetime_market_bandwidth":"237250000000","last_market_bandwidth_update":"2018-08-07T13:21:39","vesting_balance":"0.000 STEEM","reputation":"1564749115439","transfer_history":[],"market_history":[],"post_history":[],"vote_history":[],"other_history":[],"witness_votes":["guiltyparties"],"tags_usage":[],"guest_bloggers":[]},"status":"200"}null
Perhaps I have implemented this improperly?
for (int i =0 ;i < JA.length(); i++){
JSONObject JO = (JSONObject) JA.getJSONObject(i);
singleParsed = "User: " + JO.get("user.id") + "\n" +
"Location: " + JO.get("location") + "\n" +
"ID: " + JO.get("id")+"\n";
dataParsed = dataParsed + singleParsed;
}
UPDATED FIXES, STILL BROKEN BUT FARTHER ALONG.
String lines = "";
while(lines != null){
lines = bufferedReader.readLine();
data = data + lines;
}
JSONObject JO = new JSONObject(data);
String m = "";
for (int i =0 ;i < JO.length(); i++){
// JSONObject JO = (JSONObject) JO.getJSONObject(i);
singleParsed = "User: " + JO.getString("user.id") + "\n" +
"Location: " + JO.getString("location") + "\n" +
"ID: " + JO.getString("id")+"\n";
dataParsed = dataParsed + singleParsed;
DEBUGGER BREAKS ON "singleParsed = "user:", any ideas from here?

The response is a JSONObject not a JSONArray.
So, you can directly use: new JSONObject(data); in your code.
Also, as you haven't noticed, there's a null at the end after the closing brace.

I think you should parse the data with JSONObject, because the response is not an array. You should create class which contain User class and String for the status to handle the response.
Or you can use retrofit instead.
http://square.github.io/retrofit/

Try this...
try {
JSONObject object = new JSONObject(data);
String user = object.getString("user");
int id = user.getInt("id");
String name = user.getString("name");
String owner = user.getString("owner");
int weight_threshold = owner.getInt("weight_threshold");
JSONArray account_auths = owner.getJSONArray("account_auths");
.....
} catch (Exception e) {
e.printStackTrace();
}
pass other objects so on.

How to GET volley JSONArray in Android

I'm new in Volley JSONArray. I unable to setText in txtResponse because I always getting this error at onErrorResponse.
This is my Logcat
......com.example.simplevolley.simplevolley W/System.err: org.json.JSONException: Value [{"com_branch_id":7,"com_branch_comId":1,"com_branch_name":"JT Temerloh","com_branch_manager":"Tn Hj Ahmad Bin Hj Mohd Sidin","com_branch_addr":"No.58, Jalan Ibrahim (Jln Masjid Abu Bakar)","com_branch_region":"Temerloh","com_branch_state":"PAHANG","com_branch_country":"MALAYSIA","com_branch_poscode":"28000","com_branch_email":"tmlh#juaratravel.com.my","com_branch_licence":null,"com_branch_phoneNum":"09-2965625","com_branch_fax":null,"com_branch_fb":null,"com_branch_ig":null},{"com_branch_id":9,"com_branch_comId":1,"com_branch_name":"JT Nibong Tebal","com_branch_manager":"Pejabat Penang","com_branch_addr":"No. 10, Tingkat Atas, Jln Pekaka 1, Tmn Pekaka,","com_branch_region":"Nibong Tebal","com_branch_state":"PULAU PINANG","com_branch_country":"MALAYSIA","com_branch_poscode":"14300","com_branch_email":"pen#juaratravel.com.my","com_branch_licence":null,"com_branch_phoneNum":"05-7171877","com_branch_fax":"057161877","com_branch_fb":null,"com_branch_ig":null}......
I want to read this JSON lines but because it start with JSONArray I'm so confused.
{
"res": true,
"datas": [
{
"com_branch_id": 7,
"com_branch_comId": 1,
"com_branch_name": "JT Temerloh",
"com_branch_manager": "Tn Hj Ahmad Bin Hj Mohd Sidin",
"com_branch_addr": "No.58, Jalan Ibrahim (Jln Masjid Abu Bakar)",
"com_branch_region": "Temerloh",
"com_branch_state": "PAHANG",
"com_branch_country": "MALAYSIA",
"com_branch_poscode": "28000",
"com_branch_email": "tmlh#juaratravel.com.my",
"com_branch_licence": null,
"com_branch_phoneNum": "09-2965625",
"com_branch_fax": null,
"com_branch_fb": null,
"com_branch_ig": null
},
{
"com_branch_id": 9,
"com_branch_comId": 1,
"com_branch_name": "JT Nibong Tebal",
"com_branch_manager": "Pejabat Penang",
"com_branch_addr": "No. 10, Tingkat Atas, Jln Pekaka 1, Tmn Pekaka,",
"com_branch_region": "Nibong Tebal",
"com_branch_state": "PULAU PINANG",
"com_branch_country": "MALAYSIA",
"com_branch_poscode": "14300",
"com_branch_email": "pen#juaratravel.com.my",
"com_branch_licence": null,
"com_branch_phoneNum": "05-7171877",
"com_branch_fax": "057161877",
"com_branch_fb": null,
"com_branch_ig": null
},]}
I need to get all datas value. This is my code
private void makeJsonArrayRequest() {
showpDialog();
JsonArrayRequest req = new JsonArrayRequest(urlJsonArry,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
Log.d("res", response.toString());
try {
jsonResponse = "";
for (int i = 0; i < response.length(); i++) {
JSONObject branchi = (JSONObject) response.get(i);
JSONObject branch = branchi.getJSONObject("datas");
Integer com_branch_id = Integer.valueOf(branch.getString("com_branch_id"));
Integer com_branch_comId = Integer.valueOf(branch.getString("com_branch_comId"));
String com_branch_name = branch.getString("com_branch_name");
String com_branch_manager = branch.getString("com_branch_manager");
String com_branch_addr = branch.getString("com_branch_addr");
String com_branch_region = branch.getString("com_branch_region");
String com_branch_state = branch.getString("com_branch_state");
String com_branch_country = branch.getString("com_branch_country");
String com_branch_poscode = branch.getString("com_branch_poscode");
String com_branch_email = branch.getString("com_branch_email");
String com_branch_licence = branch.getString("com_branch_licence");
String com_branch_phoneNum = branch.getString("com_branch_phoneNum");
String com_branch_fax = branch.getString("datas.com_branch_fax");
String com_branch_fb = branch.getString("datas.com_branch_fb");
String com_branch_ig = branch.getString("datas.com_branch_ig");
jsonResponse = "";
jsonResponse += "Branch name: " + com_branch_id + "\n\n";
jsonResponse += "Branch manager: " + com_branch_comId + "\n\n";
jsonResponse += "Branch state: " + com_branch_name + "\n\n";
jsonResponse += "Branch state: " + com_branch_manager + "\n\n";
jsonResponse += "Branch state: " + com_branch_addr + "\n\n";
jsonResponse += "Branch state: " + com_branch_region + "\n\n";
jsonResponse += "Branch state: " + com_branch_state + "\n\n";
jsonResponse += "Branch state: " + com_branch_country + "\n\n";
jsonResponse += "Branch state: " + com_branch_poscode + "\n\n";
jsonResponse += "Branch state: " + com_branch_email + "\n\n";
jsonResponse += "Branch state: " + com_branch_licence + "\n\n";
jsonResponse += "Branch state: " + com_branch_phoneNum + "\n\n";
jsonResponse += "Branch state: " + com_branch_fax + "\n\n";
jsonResponse += "Branch state: " + com_branch_fb + "\n\n";
jsonResponse += "Branch state: " + com_branch_ig + "\n\n";
}
txtResponse.setText(jsonResponse);
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"res" + e.getMessage(),
Toast.LENGTH_LONG).show();
txtResponse.setText(e.getMessage());
}
hidepDialog();
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "res" + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
Log.d("onErrorResponse", error.getMessage());
hidepDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
}
I try to follow other solution but unfortunately I fail and stuck.

try this..
JSONObject json = new JSONObject(response);
JSONArray jsonarray = json.getJSONArray("datas");
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject c = jsonarray.getJSONObject(i);
//here you get by json key
String id = c.getString("com_branch_id");
}

1) Your Json is not an array(it starts with { implying an object
json). Use JsonObjectRequest.
2) Rather than grabbing the elements,
in your response, by iterating you can use a jackson2 to map the
response to your POJO.
3) You can use jsonschema2pojo to create a
POJO class

JsonArrayRequest will give you response as JSONArray. But your response is not JSONArray. Its JSONObject and that JSONObject contains JSONArray.
Use JsonObjectRequest for your case.
You can use Gson to convert you response to Java object.
Make a Java Pojo class that match with your response format. Than convert your response into java object.
public void onResponse(JSONObject response) {
String message = "";
if (response != null) {
message = response.toString();
Post post = null;
Gson gson = new Gson();
post = gson.fromJson(response.toString(), Post.class);
} else {
message = "Response is null";
}
}

How to parse a multi-array JSON (Java)

I'm currently working on a project that requires the latitude and longitude of a given address (input). Google maps API returns in json format, and I've done research and found that json-simple is the best option for my project. I have this code as well as the String output from google maps API, and would highly appreciate some help in parsing properly.
Also note: the call: MapTile.receiveJson just returns the string from google's API (linked below)
try {
String jsonAdr = MapTile.receiveJson("http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA");
JSONParser parser = new JSONParser();
JSONObject json = (JSONObject)parser.parse(jsonAdr);
System.out.println("lat=" + json.get("address_components"));
} catch (Exception e1) {e1.printStackTrace();System.out.println("Error contacting google or invalid input");}
This is the exact string output from google's API:
http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA
I realize I could do String parsing, however it would be inefficient as I will be using more of google's API. I have also viewed other stack overflow, as well as their JSON website but found no examples with multiple JSON arrays such as those returned by google.
Any help is greatly appreciated.

Here's the solution:
I basically made a stand alone and I parsed your JSON like this:
First : This is the method I used to parse the JSON:
public String loadJSON(String someURL) {
String json = null;
HttpClient mHttpClient = new DefaultHttpClient();
HttpGet mHttpGet = new HttpGet(someURL);
try {
HttpResponse mHttpResponse = mHttpClient.execute(mHttpGet);
StatusLine statusline = mHttpResponse.getStatusLine();
int statusCode = statusline.getStatusCode();
if (statusCode != 200) {
return null;
}
InputStream jsonStream = mHttpResponse.getEntity().getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(
jsonStream));
StringBuilder builder = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
json = builder.toString();
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
mHttpClient.getConnectionManager().shutdown();
return json;
}
Second : Used Async Task to download the data:
public class BackTask extends AsyncTask<Void, Void, Void> {
String url;
public BackTask(String URL) {
super();
this.url = URL;
}
#Override
protected Void doInBackground(Void... params) {
getData(url);
return null;
}
}
Third: Method to get the data and parse it. I have made some comments for this part since it's a bit long than usual.
public void getData(String URL) {
try {
JSONObject mainJsonObject = new JSONObject(loadJSON(URL));
// Log.d("JSON Data : ", mainJsonObject.toString());
String Status = mainJsonObject.getString("status");
Log.d("JSON Status : ", Status + "\n" + "---------------------");
JSONArray mainArray = mainJsonObject.getJSONArray("results");
// Log.d("JSON Array : ", mainArray.toString());
for (int i = 0; i < mainArray.length(); i++) {
JSONObject insideJsonObject = mainArray.getJSONObject(i);
if (insideJsonObject != null) {
String address_components = insideJsonObject
.getString("address_components");
// Log.d("Inside JSON Array : ", address_components);
JSONArray addressJSON = insideJsonObject
.getJSONArray("address_components");
// Log.d("Inside JSON ADDress : ", addressJSON.toString());
String formatted_address = insideJsonObject
.getString("formatted_address");
Log.d("Inside JSON formatted_address : ", formatted_address
+ "\n" + "-----------");
for (int ji = 0; ji < mainArray.length(); ji++) {
JSONObject geoMetryJO = mainArray.getJSONObject(ji);
if (geoMetryJO != null) {
JSONObject geometry = geoMetryJO
.getJSONObject("geometry");
// Log.d("Inside JSON geometry : ",
// geometry.toString()+"\n"+"----------");
String location_type = geometry
.getString("location_type");
Log.d("Inside JSON location_type : ", location_type
+ "\n" + "------------");
JSONObject locationJSONObject = geometry
.getJSONObject("location");
String Latitude = locationJSONObject
.getString("lat");
Log.d("Inside JSON Latitude : ", Latitude + "\n"
+ "--------------");
String Longitude = locationJSONObject
.getString("lng");
Log.d("Inside JSON Longitude : ", Longitude + "\n"
+ "------------");
JSONObject viewportJSONObject = geometry
.getJSONObject("viewport");
// Log.d("Inside JSON viewportJSONObject : ",
// viewportJSONObject.toString()+"\n"+"------------");
JSONObject northeastJSONObject = viewportJSONObject
.getJSONObject("northeast");
String Lat = northeastJSONObject.getString("lat");
Log.d("Inside JSON Lat : ", Lat + "\n"
+ "------------");
String Lon = northeastJSONObject.getString("lng");
Log.d("Inside JSON Lon : ", Lon + "\n"
+ "------------");
JSONObject southwestJSONObject = viewportJSONObject
.getJSONObject("southwest");
String south_Lat = southwestJSONObject
.getString("lat");
Log.d("Inside JSON south_Lat : ", south_Lat + "\n"
+ "------------");
String south_Lon = southwestJSONObject
.getString("lng");
Log.d("Inside JSON south_Lon : ", south_Lon + "\n"
+ "------------");
}
}
for (int k = 0; k < addressJSON.length(); k++) {
JSONObject addressJSONObject = addressJSON
.getJSONObject(k);
if (addressJSONObject != null) {
String long_name = addressJSONObject
.getString("long_name");
Log.d("Inside JSON LongName : ", long_name);
String short_name = addressJSONObject
.getString("short_name");
Log.d("Inside JSON ShortName : ", short_name);
JSONArray addressJSONArray = addressJSONObject
.getJSONArray("types");
Log.d("Inside JSON JSONADD : ",
addressJSONArray.toString() + "\n"
+ "-------------");
}
}
JSONArray insideJsonArray = insideJsonObject
.getJSONArray("types");
Log.d("Inside JSON Types : ", insideJsonArray.toString());
String street = insideJsonObject.getString("types");
Log.d("Inside JSON Street : ", street);
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
After getting all the data, you can use it in anyway you want cause it's mostly in the string format. You can just copy and paste this method and it should run fine.
Fourth : On the onCreate() method, just executed the task like this:
public static final String URL = "http://maps.googleapis.com/maps/api/geocode/json?address=1600+Amphitheatre+Parkway,+Mountain+View,+CA";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new BackTask(URL).execute();
}
This was the complete solution for this question. Let me know if have any questions for this. Hope this helps..Good Luck.. :)

I did this for formatted_address. I type casted explicitly here. But getJSONArray () and getJSONObject() methods will perform the typecasting too.
// parse the Result String to JSON
JSONObject myJSONResult = new JSONObject(results);
for (int i = 0; i <((JSONArray) myJSONResult.get("results")).length(); i++)
System.out.println(((JSONObject) ((JSONArray) myJSONResult.get("results")).get(i)).get("formatted_address")); // This is your final options.