Develop Reference

Android Json Handling issue

I want to display updated_at data to user only if value of password in folder Array is null.
JSONArray jsonArray = object.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject dataa = jsonArray.getJSONObject(i);
JSONArray jsonArray2 = dataa.getJSONArray("folder");
for (int i2 = 0; i2 < jsonArray.length(); i2++)
{
JSONObject dataa2 = jsonArray2.getJSONObject(i2);
String password = dataa2.getString("password");
if (password.equals("null") || password.equals(null))
{
//Display data
}
else
{
// dont Display data
}
}
Is there a way to do it?

Rectify your inner loop condition section.
JSONArray jsonArray2 = dataa.getJSONArray("folder");
for (int i2 = 0; i2 < jsonArray2.length(); i2++)
{
JSONObject dataa2 = jsonArray2.getJSONObject(i2);

why it only shows the latest data from the json array

These are my JSON data:
[
{"haberBaslik":"ekrem kimdir?"},
{"haberBaslik":"doğa kimdir?"},
{"haberBaslik":"biz kimiz?"},
{"haberBaslik":"fatih naptı?"}
]
and this code only shows the latest data, but I need to show my all data
JSONArray jsonarray = new JSONArray(s);
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonobject = jsonarray.getJSONObject(i);
String Haberbaslik = jsonobject.getString("haberBaslik");
tv1.setText(Haberbaslik);
}

JSONArray jsonarray = new JSONArray(s);
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonobject = jsonarray.getJSONObject(i);
String Haberbaslik = jsonobject.getString("haberBaslik");
tv1.setText(tv1.getText()+ " "+Haberbaslik);
}

how to get json which has multiple values in a string in android

I have a json which has multiple values separated by commas which is in the
form of array.I want to get skills and platforms string separately.Can you please help me?
I want to show skills string and platforms string in text.
Please help me.
The format is:
{
"data": [
{
"skills": "ANDROID SDK, ANIMATION, ANGULARJS,",
"platforms": "IOS Application, Social Networking, Online shopping Sites, Web Application"
}
],
"status": 100
}

Try this one
try {
JSONObject ob = new JSONObject(response);
int status = ob.getInt("status");
if (status == 100) {
JSONArray ja = ob.getJSONArray("data");
for (int i = 0; i < ja.length(); i++) {
values = new HashMap<>();
JSONObject vj = ja.getJSONObject(i);
String skills = vj.getString("skills "));
String platforms=vj.getString("platforms"));
data.add(values);
}
split these 2 strings using 'split()'
List<String> skillsArray = Arrays.asList(skills.split(","));
List<String> platformsArray= Arrays.asList(platforms.split(","));

String in = "your json";
JSONObject jsonObj = new JSONObject(in);
// Getting JSON Array node
JSONArray jsonarray = jsonObj.getJSONArray("data");
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonobject = jsonarray.getJSONObject(i);
String skills = jsonobject.getString("skills");
String platforms = jsonobject.getString("platforms");
}

Try this
JSONObject jsonObject = new JSONObject("Your json response");
JSONArray jsonArray = jsonObject.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonobject = jsonArray.getJSONObject(i);
String skill = jsonobject.getString("skills");
String platforms = jsonobject.getString("platforms");
String[] skillsArray = skill.split(Pattern.quote(","));
String[] platformsArray = platforms.split(Pattern.quote(","));
for (int j=0; j<skillsArray.length; j++)
{
Log.i("Skill Value ", "=" + skillsArray[j]);
}
for (int j=0; j<platformsArray.length; j++)
{
Log.i("platforms Value ", "=" + platformsArray[j]);
}
}
Output

First of all convert your output string into json. Note that output string is the string which contains your results of json format that you have posted above.following is the code on how to do that:
JSONObject myJsonResponse = new JSONObject(yourString);
The next one is Array. That is how you will get it and will iterate over it.
JSONArray jsonarray = jsonObj.getJSONArray("data");
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject innerJsonObject= jsonarray.getJSONObject(i);
String skills = innerJsonObject.getString("skills");
String platforms = innerJsonObject.getString("platforms");
}
Now you have gotten your required fields and you can now perform any String functions over the String skills and platforms.
Happy coding. .

The best way is creating a model class such :
public class MyModel{
Properties [] data;
class Properties{
public String skills;
public String platforms;
}
}
then you can parse your string to model with Gson library like this :
MyModel myModel = new Gson().fromJson(yourString, MyModel.class)
so all data is in myModel object and you can access to skills with
myModel.data[0].skills
to add Gson library to your project add below to your app gradle file :
compile 'com.google.code.gson:gson:2.8.1'

You may try this,
JSONObject jsonObject = null;
try {
jsonObject = new JSONObject("JSON_STRING");
JSONArray jsonArray = jsonObject.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonobject = jsonArray.getJSONObject(i);
String skills = jsonobject.getString("skills");
String[] seperateData = skills.split(Pattern.quote(","));
for (int j = 0; j < seperateData.length; j++) {
Log.e("Your Skill Value-> ", seperateData[j]);
}
String platforms = jsonobject.getString("platforms");
seperateData = platforms.split(Pattern.quote(","));
for (int j = 0; j < seperateData.length; j++) {
Log.e("Your Platform Value-> ", seperateData[j]);
}
}
} catch (JSONException e) {
e.printStackTrace();
}

class Data{
public String skills;
public String platforms;
}
Gson gson = new Gson();
JSONArray dataArray = response.getJSONArray("data");
List<Data> dataList= gson.fromJson(dataArray toString(), new TypeToken<List<Data>>() {
}.getType());
Try this.. It will make parsing easier.
implementation 'com.google.code.gson:gson:2.8.0'

First Parse your JSON:
JSONObject jsonObj = new JSONObject(in);
JSONArray jsonarray = jsonObj.getJSONArray("data");
for (int i = 0; i < jsonarray.length(); i++) {
JSONObject jsonobject = jsonarray.getJSONObject(i);
String skills = jsonobject.getString("skills");
String platforms = jsonobject.getString("platforms");
}
Then Split your string values:
String skills = "ANDROID SDK, ANIMATION, ANGULARJS";
String[] separated = CurrentString.split(",");
separated[0]; // this will contain "ANDROID SDK"
separated[1]; // this will contain " ANIMATION"
separated[2]; // this will contain " ANGULARJS"
You have to remove the space to the second String:
separated[1] = separated[1].trim();

Try this you will be getting all values of sapereted with commas
jsonString = getting string from server side
String[] separated = jsonString.split(",");
StringBuilder s = new StringBuilder(10000);
for (int i = 0; i < separated.length; i++) {
if (i == separated.length - 1) {
s.append(separated[i].trim() + "");
} else {
s.append(separated[i].trim() + ",\n");
}
}
//tvDisplayAddress.setText(s);
Log.e("VALUES: ",s+"");

at 0 of type org.json.JSONArray cannot be converted to JSONObject

I have values stored in the JSON url and parsing the value from json then displaying in the app.I'm using Async task to get the values from JSONArray and display in the list. when i get the values from server i got error and the json values are
[{"name":"John","uuid":"B9407F30-F5F8-466E-AFF9-25556B57FE6D","major_id":"67889","minor_id":"7032","notification":"Welcome","type":"Website","website":"estimote.com"}]
Log:
10-16 17:46:38.996: W/System.err(11224): org.json.JSONException: Value [{"notification":"Welcome","uuid":"B9407F30-F5F8-466E-AFF9-25556B57FE6D","type":"Website","website":"estimote.com","major_id":"67889","minor_id":"7032","name":"John"}] at 0 of type org.json.JSONArray cannot be converted to JSONObject
10-16 17:46:38.996: W/System.err(11224): at org.json.JSON.typeMismatch(JSON.java:100)
10-16 17:46:38.996: W/System.err(11224): at org.json.JSONArray.getJSONObject(JSONArray.java:484)
code:
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, ServiceHandler.GET);
Log.d("Response: ", "> " + jsonStr);
if (jsonStr != null) {
try {
//JSONObject jsonObj = new JSONObject(jsonStr);
JSONArray jarray = new JSONArray(jsonStr);
jObject = jarray.getJSONObject(0);
Log.d("jsonObj_Response: ", "> " + jarray);
// Getting JSON Array node
contacts = jObject.getJSONArray(TAG_CONTACTS);
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
//TAG_ID, TAG_NAME, TAG_major_id, TAG_minor_id, TAG_notification, TAG_type
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String email = c.getString(TAG_major_id);
String address = c.getString(TAG_minor_id);
String gender = c.getString(TAG_notification);
// tmp hashmap for single contact
HashMap<String, String> contact = new HashMap<String, String>();
// adding each child node to HashMap key => value
contact.put(TAG_ID, id);
contact.put(TAG_NAME, name);
contact.put(TAG_major_id, email);
contact.put(TAG_minor_id, address);
// adding contact to contact list
contactList.add(contact);
}

you missed a JSONArray
JSONArray jarray = new JSONArray(jsonStr);
for (int i = 0; i < jarray.length(); i++) {
JSONArray innerArray = jarray.optJSONArray(i);
for (int j = 0; j < innerArray.length(); j++) {
jObject = innerArray.getJSONObject(j);
}
}
After OP's Edit
JSONArray jarray = new JSONArray(jsonStr);
for (int i = 0; i < jarray.length(); i++) {
JSONObject jobj = jarray.optJSONObject(i);
if (jobj != null) {
}
}

jObject = jarray.getJSONObject(0) is a JSONArray, your string has an object within an array within an array ;)

You have two arrays ("[["/"]]") so "jObject = jarray.getJSONObject(0);" fails as it tries to convert "[{"name" ... estimote.com"}]" to a JSONObject but this is a JSONArray.

jarray[0] is a JSONarray not a JSONObject.

My soluation as follows ,
JSONArray arr = new JSONArray(jsonStr);//Response string is here
for (int i = 0; i < arr.length(); i++) {
JSONArray arr2 = arr.optJSONArray(i);
for (int j = 0; j < arr2.length(); j++) {
jObject = arr2.getJSONObject(0);
}
}

Android JSON getJSONObject not working, incorrect parsing

I cannot figure out why my parsing is not working, this is my JSON:
{
"fileVersion":"1.0",
"graves":[
{
"ID_grave":"1",
"ID_line":"1",
"sequence":"1",
"persons":[
{
"ID_person":"1",
"name":"Janez",
"surname":"Novak",
"dateBirth":"1956-08-11",
"dateDeath":"2014-02-12",
"important":"0",
"imp_desc":""
}
]
},
{
"ID_grave":"2",
"ID_line":"1",
"sequence":"2",
"persons":[
{
"ID_person":"2",
"name":"Mojca",
"surname":"Novak",
"dateBirth":"1953-02-13",
"dateDeath":"2012-04-08",
"important":"0",
"imp_desc":""
}
]
}
]
}
This code is working, when I want to get the first JSONObject:
String jsonData = convertStreamToString(in);
JSONObject json = new JSONObject(jsonData);
JSONArray name = json.getJSONArray("graves");
for (int i = 0; i < name.length(); i++) {
JSONObject grave = name.getJSONObject(i);
lineArrayList.add(grave.getString("ID_line"));
graveArrayList.add(grave.getString("ID_grave"));
}
But I would like to get the "persons" array in "graves" object. This should work but it's not, I am getting only the first persons array, where the name is Janez and not the second array where the name is Mojca:
String jsonData = convertStreamToString(in);
JSONObject json = new JSONObject(jsonData);
JSONArray name = json.getJSONArray("graves");
for (int i = 0; i < name.length(); i++) {
JSONObject grave = name.getJSONObject(i);
JSONArray persons = grave.getJSONArray("persons");
for (int k = 0; k < persons.length(); k++) {
//The problem was because of the index i, you have to change to k and it will work
JSONObject grave = persons.getJSONObject(i);
nameArrayList.add(grave.getString("name"));
surnameArrayList.add(grave.getString("surname"));
}
}

graves is a JSONArray and persons is a JSONArray into graves
for (int i = 0; i < name.length(); i++) {
JSONObject grave = name.getJSONObject(i);
JSONArray persons = grave.optJSONArray("persons");
if (persons != null) {
for (int j = 0; j < persons.length(); j++) {
}
}
}

Do your parsing as follows ,
String jsonData = convertStreamToString(in);
JSONObject json = new JSONObject(jsonData);
JSONArray name = json.getJSONArray("graves");
for (int i = 0; i < name.length(); i++) {
JSONObject grave = name.getJSONObject(i);
JSONArray persons = grave.getJSONArray("persons");
for (int k = 0; k < persons.length(); k++) {
JSONObject grave = persons.getJSONObject(i);
nameArrayList.add(grave.getString("name"));
surnameArrayList.add(grave.getString("surname"));
}
}

Try This:
for (int i = 0; i < name.length(); i++) {
JSONObject grave = name.getJSONObject(i);
JSONArray persons = grave.optJSONArray("persons");
if (persons != null) {
for (int j = 0; j < persons.length(); j++) {
JSONObject grave= persons.getJSONObject(i);
lineArrayList.add(grave.getString("ID_line"));
//so on..
}
}

Ok only today I discovered that I am getting the data only from the first persons array and from the second where for example is a person with a name Mojca..I tried all the three given solutions but nothing works..