Currently, I'm having a minor trouble trying to get the string data from the jsonArray, however, I'm unable to get the value . I've got the data in the json object Example:
{
"lot":[
{
"id":"271",
"lot_date":"2015-05-25"
}
],
"numb3":[
{
"id":"675",
"lot_date":"2015-05-25"
}
],
"num4":[
{
"id":"676",
"lot_date":"2015-05-25"
}
],
"result":"OK"
}
The data above is stored in the JsonObject jsonobj. And what I want to do is to check if the JSON array JSONArray lot6 = jsonobj.optJSONArray("lot6"); contains the values or not , and if it's not null get the string data. However, even the data contains in the lot6 array, the result is null.
JSONArray lot6 = jsonobject.optJSONArray("lot6");
Log.d("LOT6",lot6+"");
if (lot6 != null) {
jsonarry2 = jsonobject.getJSONArray("lot6");
//3.if not null get the string data from the
for (int i = 0; i < jsonarry2.length(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
jsonobject = jsonarry2.getJSONObject(i);
ListData worldpop = new ListData();
worldpop.set_date(jsonobject.optString("lot_date"));
worldpop.set__id(jsonobject.optString("id"));
world.add(worldpop);
}
//5. test this part of the variable
String lotdate = world.get(0).get_date();
String lotid = world.get(0).get__id();
Hi please check Not lot6 its lot. please folloe below formate to get out out.
String s="{\"lot\":[{\"id\":\"271\",\"lot_date\":\"2015-05-25\"}],\"numb3\":[{\"id\":\"675\",\"lot_date\":\"2015-05-25\"}],\"num4\":[{\"id\":\"676\",\"lot_date\":\"2015-05-25\"}],\"result\":\"OK\"} ";
try{
JSONParser parser = new JSONParser();
JSONObject json = (JSONObject) parser.parse(s);
String arr[]={"lot","numb3","num4"};
for(int i=0;i<json.size()-1;i++){
JSONArray ja=(JSONArray)json.get(arr[i]);
for(int j=0;j<ja.size();j++){
JSONObject jo1=(JSONObject) ja.get(j);
System.out.println("lot_date: "+jo1.get("lot_date")+" Id "+jo1.get("id"));
}
// System.out.println(ja);
}
System.out.println(json.get("result"));
}catch (Exception e) {
System.out.println(e);
}
Related
I have this code to get all information from website, I did it very well and it works, but I got stuck when trying to get "fields" from the site
This is the site url:
http://content.guardianapis.com/search?order-by=newest&show-references=author&show-tags=contributor&q=technology&show-fields=thumbnail&api-key=test
Here is the code and how can I fix it
try {
JSONObject jsonRes = new JSONObject(response);
JSONObject jsonResults = jsonRes.getJSONObject("response");
JSONArray resultsArray = jsonResults.getJSONArray("results");
for (int i = 0; i < resultsArray.length(); i++) {
JSONObject oneResult = resultsArray.getJSONObject(i);
String url = oneResult.getString("webUrl");
String webTitle = oneResult.getString("webTitle");
String section = oneResult.getString("sectionName");
String date = oneResult.getString("webPublicationDate");
date = formatDate(date);
JSONArray fields = oneResult.getJSONArray("fields");
JSONArray fieldsArray=oneResult.getJSONArray("fields");
String imageThumbnail= null;
if(fields.length()>0){
imageThumbnail=fields.getJSONObject(0).getString("thumbnail");
}
resultOfNewsData.add(new News(webTitle url, date, section, imageThumbnail));
}
} catch (JSONException e) {
Log.e("FromLoader", "Err parsing response", e);
}
Because the fields object isn't an Array is a JSON object
"fields":{"thumbnail":"https://media.guim.co.uk/fa5ae6ca7c78fdfc4ac0fe4212562e6daf4dfb3d/0_265_4032_2419/500.jpg"}
An array object should contain [ JSON1, JSON2, JSON3 ]
In your case this
JSONArray fields = oneResult.getJSONArray("fields");
becomes this
JSONObject fields = oneResult.getJSONObject("fields");
And I don't understand why are you getting the same data twice - fields and fieldsArray
Currently I'm trying to display JSON data (hosted on a Webserver) in a ListView in Android. The App correctly receives the data but is unable to process it further to display it in said ListView.
The error is as follows:
JSON parsing error: Value ... of type org.json.JSONArray cannot be converted to JSONObject
The JSON data I'm trying to parse looks like the following:
[{"idBuch":1,"autor":"Erich Maria Remarque","name":"Im Westen nichts Neues","preis":20,"buchtyp":{"idBuchtyp":3,"typenamen":"Geschichte"}}]
The code that processes the received JSON-String:
try{
JSONObject jsonObject = new JSONObject(jsonStr);
JSONArray books = jsonObject.getJSONArray("book");
for(int i = 0; i < books.length(); i++){
JSONObject obj = books.getJSONObject(i);
String idBook = obj.getString("idBuch");
String author = obj.getString("autor");
String name = obj.getString("name");
String price = obj.getString("preis");
JSONObject booktype = obj.getJSONObject("buchtyp");
String idBooktype = booktype.getString("idBuchtyp");
String typename = booktype.getString("typenamen");
HashMap<String, String> book = new HashMap<>();
book.put("idBook", idBook);
book.put("author", author);
book.put("name", name);
book.put("price", price);
book.put("genre", typename);
bookList.add(book);
} }catch(final JSONException e)
I am aware of the fact that there are a lot of similar questions on this site but I still had no success regarding this issue. Thank you in advance.
The JSON that you provided only contains an array.
[
{
"idBuch": 1,
"autor": "Erich Maria Remarque",
"name": "Im Westen nichts Neues",
"preis": 20,
"buchtyp": {
"idBuchtyp": 3,
"typenamen": "Geschichte"
}
}
]
However, your code expects the root to be an object with field book.
{
"book": [
{
"idBuch": 1,
"autor": "Erich Maria Remarque",
"name": "Im Westen nichts Neues",
"preis": 20,
"buchtyp": {
"idBuchtyp": 3,
"typenamen": "Geschichte"
}
}
]
}
In this case, try replacing the line:
JSONObject jsonObject = new JSONObject(jsonStr);
with
JSONArray books = new JSONArray(jsonStr);
and proceed as normal. Your end result should look like:
try {
JSONArray books = new JSONArray(jsonStr);
for (int i = 0; i < books.length(); i++) {
JSONObject obj = books.getJSONObject(i);
String idBook = obj.getString("idBuch");
String author = obj.getString("autor");
String name = obj.getString("name");
String price = obj.getString("preis");
JSONObject booktype = obj.getJSONObject("buchtyp");
String idBooktype = booktype.getString("idBuchtyp");
String typename = booktype.getString("typenamen");
HashMap < String, String > book = new HashMap < > ();
book.put("idBook", idBook);
book.put("author", author);
book.put("name", name);
book.put("price", price);
book.put("genre", typename);
bookList.add(book);
}
} catch (final JSONException e) {
e.printStackTrace()
}
I have a json with colon between the strings, and I'm not sure how can I parse it. I know that I don't have an array in the json, but I'm not sure how can I get the values...
{
"config": {
"network": {
"hni:21407" : "num:[INTNUM]",
"hni:311490" : "num:044[INTNUM]"
}
}
}
This is what I'm trying, but I never go through the loop for, and not really sure if I need it.
JSONObject obj = new JSONObject(netWorkJson);
String arr = obj.optString("network");
for(int i = 0; i < arr.length(); i++) {
String hni = obj.getString("hni");
String num = obj.getString("num");
}
Thanks in advance
You first need to parse the inner json object "network", after that you can loop over it's keys and get the values for them one by one:
private void parseJSON(String netWorkJson) throws JSONException {
JSONObject obj = new JSONObject(netWorkJson);
JSONObject config = obj.getJSONObject("config");
JSONObject network = config.getJSONObject("network");
Iterator<?> keys = network.keys();
while(keys.hasNext()) {
String key = (String) keys.next();
String value = network.getString(key);
}
}
Beauty of this is that it will also work if you had 100 hni values for example, and that you don't have to get them one by one.
network is JSONObject instead of JSONArray, so no need to use for-loop for getting value from it.just use do it as:
JSONObject obj = new JSONObject(netWorkJson);
// get network JSONObject from obj
JSONObject network=obj.getJSONObject("network");
// get both values from network object
String strHni=network.optString("hni:21407");
String strNum =network.optString("hni:311490");
JSONObject message = new JSONObject(config);
String value=message.getJSONObject("network").getString("hni:21407")
Try This
try {
JSONObject jsonObject = new JSONObject("config");
JSONArray jsonArray = jsonObject.getJSONArray("network");
for(int i =0;i<jsonArray.length();i++){
JSONObject jsonObject1 = jsonArray.getJSONObject(i);
String hni21407 = jsonObject1.getString("hni:21407");
String hni311490 = jsonObject1.getString("hni:311490");
}
} catch (JSONException e) {
e.printStackTrace();
}
The is my JSON string .
{
"server_response":
{
"source_response" :
[
{"stoppage_name":"sealdah","bus_no":"43#230#234/1#30_A"}
] ,
"destination_response" :
[
{"stoppage_name":"howrah","bus_no":"43#234/1#30_A"}
]
}
}
I think there would be a '[' after "server_response" , but not sure .
I am trying to retrieve the data but the code is not working .
try {
jsonObject = new JSONObject(json_string);
jsonArray = jsonObject.getJSONArray("server_response");
int count=0 ;
String stoppage,busno;
while(count<1)
{
JSONArray JA = jsonArray.getJSONArray(0);
JSONObject JO = JA.getJSONObject(count);
stoppage = JO.getString("stoppage_name");
busno = JO.getString("bus_no");
Toast.makeText(getApplicationContext(),"Stoppage ="+ stoppage+" Bus no =" +busno, Toast.LENGTH_LONG).show();
count ++;
}
} catch (JSONException e) {
e.printStackTrace();
}
Where I am making wrong . I am new to JSON and Android.
jsonObject = new JSONObject(json_string);
jsonServerObject = jsonObject.getJSONObject("server_response");
jsonSourceArray = jsonServerObject.getJSONArray("source_response");
jsonDestinationArray = jsonServerObject.getJSONArray("destination_response");
//Iterate your 2 arrays
server_response is not a JSONArray, it's a JSONObject. Because array have numeric key, not string.
i have already answer this type of question .. what you have to do .. use multiple for loop to getting value inside array under array.
this is srceen shots
JSONArray objJson = new JSONArray(strJSONData);
System.out.println("AppUserLogin:"+objJson);
// Parsing json
if(arrJson.length()>0)
{
for (int i = 0; i < objJson.length(); i++) {
try {
JSONObject objprod = arrJson.getJSONObject(i);
HashMap<String, String> MaplistTemp = new HashMap<String, String>();
MaplistTemp.put("replyCode",
objprod.getString("replyCode"));
MaplistTemp.put("replyCode",
objprod.getString("replyCode"));
JSONArray objproduct_var = new JSONArray(objprod.getString("LearningStandards"));
if ((objproduct_var.length()) > 0) {
for (int k = 0; k < objproduct_var.length(); k++) {
JSONObject objprodvar = objproduct_var
.getJSONObject(k);
MaplistTemp
.put("1",
objprodvar
.getString("1"));
MaplistTemp
.put("2",
objprodvar
.getString("2"));
MaplistTemp
.put("3",
objprodvar
.getString("3"));
MaplistTemp
.put("4",
objprodvar
.getString("4"));
}
}
// sub_categorys_details.add(sub_cat_det);
medpostList.add(MaplistTemp);// adding to final hashmap
} catch (JSONException e) {
e.printStackTrace();
}
}
}
Try this , and {} = object [] = array
try{
jsonObject = new JSONObject(json_string);
injsonObject = jsonObject.getJSONObject("server_response");
jsonArray = injsonObject.getJSONArray("source_reponse");
}catch(Exception e){}
sonArray = jsonObject.getJSONArray("server_response");
Here you are trying to access server_response as an array. It isn't an array. "server_response" is the key to the nested object:
{
"source_response" :
[
{"stoppage_name":"sealdah","bus_no":"43#230#234/1#30_A"}
] ,
"destination_response" :
[
{"stoppage_name":"howrah","bus_no":"43#234/1#30_A"}
]
}
See? Thats not an array, tis a JSON object with two keys, each of them have an array as value.
I'm not very familiar with android or java but in plain old javascript you could try something like:
var sourceResp = jsonObject.server_response.source_response;
or
var sourceResp = jsonObject["server_response"]["source_response"];
That will produce an array with one item in it.
I hope this can get you going.
I want to get data from a jason webservice,
JSON response is :
{"content":[{"id":"1","asset_id":"62","title":"sample page","alias":"","introtext":"","fulltext":"Some Contents"},{"id":"2","asset_id":"62","title":"sample page2","alias":"","introtext":"","fulltext":"Some Contents"},{"id":"3","asset_id":"62","title":"sample page3","alias":"","introtext":"","fulltext":"Some Contents"}]}
After Visiting Here
I have done in this way:
private void parseData() {
// Creating JSON Parser instance
JSONParser jParser = new JSONParser();
// getting JSON string from URL
JSONObject json = jParser.getJSONFromUrl(BASE_URL);
try {
// Getting Array of Contents
contents = json.getJSONArray(TAG_CONTENTS);
// looping through All Contents
for(int i = 0; i < contents.length(); i++){
JSONObject c = contents.getJSONObject(i);
// Storing each json item in variable
id = c.getString(TAG_ID);
title = c.getString(TAG_TITLE);
}
textView.setText(id + " " + title);
} catch (JSONException e) {
e.printStackTrace();
}
}
Now I got id = 3 and title = sample page3result now how can I get first two values as also!!?
Arshay!! Try This One Man!!
private void parseData() {
// Creating JSON Parser instance
MyJSONParser jParser = new MyJSONParser();
// getting JSON string from URL
JSONObject json = jParser.getJSONFromUrl(BASE_URL);
try {
// Getting Array of Contents
jsonArrar = json.getJSONArray(TAG_CONTENTS);
List list = new ArrayList<String>();
// looping through All Contents
for(int i = 0; i < jsonArrar.length(); i++){
// JSONObject c = jsonArrar.getJSONObject(i);
String id1=jsonArrar.getJSONObject(i).getString(TAG_ID);
String title=jsonArrar.getJSONObject(i).getString(TAG_TITLE);
String fullText=jsonArrar.getJSONObject(i).getString(TAG_FULL_TEXT);
list.add(id1);
list.add(title);
list.add(fullText);
}
Iterator<String> iterator = list.iterator();
StringBuilder builder = new StringBuilder();
while (iterator.hasNext()) {
String string = iterator.next();
builder.append(string+"\n");
}
textView.setText(builder);
} catch (JSONException e) {
e.printStackTrace();
}
}
Your line is JSONObject and not JSONArray.
You should use it like that:
JSONObject jso = new JSONObject(line);
JSONArray jsa = new JSONArray(jso.getJSONArray("content"));
Try something like this
// jsonData : response
List< String> contents = new ArrayList< String>();
String[] val;
try {
JSONObject jsonObj = new JSONObject(jsonData);
if (jsonObj.get(JSON_ROOT_KEY) instanceof JSONArray) {
JSONArray array = jsonObj.optJSONArray(JSON_ROOT_KEY);
for (int loop = 0; loop < array.length(); loop++) {
val = new String[loop];
JSONObject Jsonval = array.getJSONObject(loop);
val.Jsonval.getString(TAG_ID);
val.Jsonval.getString(asset_id);
.
.
etc
contents.add(val);
}
}
}