Develop Reference

Read a JSON File from Resources with JsonObject

I want to assign the JSONfile inside the Resources to a instance from JsonObject and parse it.
Please guide how?
MainActivicy:
boolean bool = true;
boolean bool2=true;
String s = "";
input = getResources().openRawResource(R.raw.infojson);
JsonReader reader = new JsonReader(new InputStreamReader(input));
reader.beginObject();
while (bool==true){
String sv ="";
sv=reader.nextName();
s +=sv;
if(sv.equals("id")| sv.equals("num")){
s +=" : " ;
s+=(String.valueOf(reader.nextInt()));
}
if (sv.equals("name")){
s +=" : " ;
s+=reader.nextString();
}
s+="\t";
bool = reader.hasNext();
}
JSON Content:
{
"id":"1","name":"E1","num":1111,
"My":{"id":"2","name":"E2","num":2222}
}

Create a model to parse your json like below:
class ResourseResponse {
private String id;
private String name;
private String num;
//getter-setter
}
Then parse your json from JsonReader and create your model.
JsonReader reader = new JsonReader(new InputStreamReader(input));
Gson gson = new Gson();
if (reader.peek() != JsonToken.BEGIN_OBJECT) {
reader.beginArray();
while (reader.hasNext()) {
ResourseResponse response = gson.fromJson(reader, ResourseResponse.class);
//Add to list
}
reader.endArray();
} else {
ResourseResponse message = gson.fromJson(reader, ResourseResponse.class);
}

If the JSON content is not too big, you can easily create org.json.JSONObject and iterate its keys.
String jsonStr = "{\"id\":\"1\",\"name\":\"E1\",\"num\":1111, \"My\":{\"id\":\"2\",\"name\":\"E2\",\"num\":2222} }"
JSONObject json = new JSONObject(jsonStr);
json.keys().forEachRemaining(x -> {
System.out.println(x.toString());
try {
if (json.get(x.toString()) instanceof JSONObject) {
System.out.println(json.get(x.toString())); / here you can iterate the internal json object
}
} catch (JSONException e) {
e.printStackTrace();
}
});
Output is:
num
name
id
My
{"num":2222,"name":"E2","id":"2"}

Android parse JSONObject

I've got a little problem with parsing json into my android app.
This is how my json file looks like:
{
"internalName": "jerry91",
"dataVersion": 0,
"name": "Domin91",
"profileIconId": 578,
"revisionId": 0,
}
As You can see this structure is a little bit weird. I dont know how to read that data in my app. As I noticed those are all Objects not arrays :/

You can always use good old json.org lib. In your Java code :
First read your json file content into String;
Then parse it into JSONObject:
JSONObject myJson = new JSONObject(myJsonString);
// use myJson as needed, for example
String name = myJson.optString("name");
int profileIconId = myJson.optInt("profileIconId");
// etc

UPDATE 2018
After 5 years there is a new "standard" for parsing json on android. It's called moshi and one can consider it GSON 2.0. It's very similar but with design bugs fixed that are the first obstacles when you start using it.
https://github.com/square/moshi
First add it as a mvn dependency like this:
<dependency>
<groupId>com.squareup.moshi</groupId>
<artifactId>moshi-kotlin</artifactId>
<version>1.6.0</version>
</dependency>
After adding it we can use like so (taken from the examples):
String json = ...;
Moshi moshi = new Moshi.Builder().build();
JsonAdapter<BlackjackHand> jsonAdapter = moshi.adapter(BlackjackHand.class);
BlackjackHand blackjackHand = jsonAdapter.fromJson(json);
System.out.println(blackjackHand);
More infos on their GitHub page :)
[old]
I would recommend using Gson.
Here are some links for tutorials:
how to convert java objecto from json format using GSON
Parse JSON file using GSON
Simple GSON example
Converting JSON data to Java object
An alternative to Gson you could use Jackson.
Jackson in 5 minutes
how to convert java object to and from json
This libraries basically parse your JSON to a Java class you specified.

to know if string is JSONArray or JSONObject
JSONArray String is like this
[{
"internalName": "blaaa",
"dataVersion": 0,
"name": "Domin91",
"profileIconId": 578,
"revisionId": 0,
},
{
"internalName": "blooo",
"dataVersion": 0,
"name": "Domin91",
"profileIconId": 578,
"revisionId": 0,
}]
and this String as a JSONOject
{
"internalName": "domin91",
"dataVersion": 0,
"name": "Domin91",
"profileIconId": 578,
"revisionId": 0,
}
but how to call elements from JSONArray and JSONObject ?
JSNOObject info called like this
first fill object with data
JSONObject object = new JSONObject(
"{
\"internalName\": \"domin91\",
\"dataVersion\": 0,
\"name\": \"Domin91\",
\"profileIconId\": 578,
\"revisionId\": 0,
}"
);
now lets call information from object
String myusername = object.getString("internalName");
int dataVersion = object.getInt("dataVersion");
If you want to call information from JSONArray you must know what is the object position number or you have to loop JSONArray to get the information for example
looping array
for ( int i = 0; i < jsonarray.length() ; i++)
{
//this object inside array you can do whatever you want
JSONObject object = jsonarray.getJSONObject(i);
}
if i know the object position inside JSONArray ill call it like this
//0 mean first object inside array
JSONObject object = jsonarray.getJSONObject(0);

This part do in onBackground in AsyncTask
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl(url);
try {
result = json.getString("internalName");
data=json.getString("dataVersion");
ect..
} catch (JSONException e) {
e.printStackTrace();
}
JsonParser
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "utf-8"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}

I suggest you to use a library like gson as #jmeier wrote on his answer. But if you want to handle json with android's defaults, you can use something like this:
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String s = new String("{\"internalName\": \"domin91\",\"dataVersion\": 0,\"name\": \"Domin91\",\"profileIconId\": 578,\"revisionId\": 0,}");
try {
MyObject myObject = new MyObject(s);
Log.d("MY_LOG", myObject.toString());
} catch (JSONException e) {
Log.d("MY_LOG", "ERROR:" + e.getMessage());
}
}
private static class MyObject {
private String internalName;
private int dataVersion;
private String name;
private int profileIconId;
private int revisionId;
public MyObject(String jsonAsString) throws JSONException {
this(new JSONObject(jsonAsString));
}
public MyObject(JSONObject jsonObject) throws JSONException {
this.internalName = (String) jsonObject.get("internalName");
this.dataVersion = (Integer) jsonObject.get("dataVersion");
this.name = (String) jsonObject.get("name");
this.profileIconId = (Integer) jsonObject.get("profileIconId");
this.revisionId = (Integer) jsonObject.get("revisionId");
}
#Override
public String toString() {
return "internalName=" + internalName +
"dataVersion=" + dataVersion +
"name=" + name +
"profileIconId=" + profileIconId +
"revisionId=" + revisionId;
}
}
}

Please checkout ig-json parser or Logan Square for fast and light JSON library.
For comparison, this is the stats from Logan Square developer.

Here you can parse any file from assets folder
fetch file from assets folder
public void loadFromAssets(){
try {
InputStream is = getAssets().open("yourfile.json");
readJsonStream(is);
} catch (IOException e) {
e.printStackTrace();
}
}
Convert JSON to your class object
public void readJsonStream(InputStream in) throws IOException {
Gson gson = new Gson();
JsonReader reader = new JsonReader(new InputStreamReader(in, "UTF-8"));
reader.setLenient(true);
int size = in.available();
Log.i("size", size + "");
reader.beginObject();
long starttime=System.currentTimeMillis();
while (reader.hasNext()) {
try {
Yourclass message = gson.fromJson(reader, Yourclass.class);
}
catch (Exception e){
Toast.makeText(this, e.getCause().toString(), Toast.LENGTH_SHORT).show();
}
}
reader.endObject();
long endtime=System.currentTimeMillis();
long diff=endtime-starttime;
int seconds= (int) (diff/1000);
Log.i("elapsed",seconds+"");
reader.close();
}

Code in FOR loop not executed

I have a ProgressDialog that retrieves in background data from database by executing php script.
I'm using gson Google library. php script is working well when executed from browser:
{"surveys":[{"id_survey":"1","question_survey":"Are you happy with the actual government?","answer_yes":"50","answer_no":"20"}],"success":1}
However, ProgressDialog background treatment is not working well:
#Override
protected Void doInBackground(Void... params) {
String url = "http://192.168.1.4/tn_surveys/get_all_surveys.php";
HttpGet getRequest = new HttpGet(url);
Log.d("GETREQUEST",getRequest.toString());
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
Log.d("URL1",url);
HttpResponse getResponse = httpClient.execute(getRequest);
Log.d("GETRESPONSE",getResponse.toString());
final int statusCode = getResponse.getStatusLine().getStatusCode();
Log.d("STATUSCODE",Integer.toString(statusCode));
Log.d("HTTPSTATUSOK",Integer.toString(HttpStatus.SC_OK));
if (statusCode != HttpStatus.SC_OK) {
Log.w(getClass().getSimpleName(), "Error " + statusCode + " for URL " + url);
return null;
}
HttpEntity getResponseEntity = getResponse.getEntity();
Log.d("RESPONSEENTITY",getResponseEntity.toString());
InputStream httpResponseStream = getResponseEntity.getContent();
Log.d("HTTPRESPONSESTREAM",httpResponseStream.toString());
Reader inputStreamReader = new InputStreamReader(httpResponseStream);
Gson gson = new Gson();
this.response = gson.fromJson(inputStreamReader, Response.class);
}
catch (IOException e) {
getRequest.abort();
Log.w(getClass().getSimpleName(), "Error for URL " + url, e);
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Log.d("HELLO","HELLO");
StringBuilder builder = new StringBuilder();
Log.d("STRINGBUILDER","STRINGBUILDER");
for (Survey survey : this.response.data) {
String x= survey.getQuestion_survey();
Log.d("QUESTION",x);
builder.append(String.format("<br>ID Survey: <b>%s</b><br> <br>Question: <b>%s</b><br> <br>Answer YES: <b>%s</b><br> <br>Answer NO: <b>%s</b><br><br><br>", survey.getId_survey(), survey.getQuestion_survey(),survey.getAnswer_yes(),survey.getAnswer_no()));
}
Log.d("OUT FOR","OUT");
capitalTextView.setText(Html.fromHtml(builder.toString()));
progressDialog.cancel();
}
HELLO Log is displayed.
STRINGBUILDER Log is displayed.
QUESTION Log is NOT displayed.
OUT FOR Log is displayed.
Survey Class:
public class Survey {
int id_survey;
String question_survey;
int answer_yes;
int answer_no;
public Survey() {
this.id_survey = 0;
this.question_survey = "";
this.answer_yes=0;
this.answer_no=0;
}
public int getId_survey() {
return id_survey;
}
public String getQuestion_survey() {
return question_survey;
}
public int getAnswer_yes() {
return answer_yes;
}
public int getAnswer_no() {
return answer_no;
}
}
Response Class:
public class Response {
ArrayList<Survey> data;
public Response() {
data = new ArrayList<Survey>();
}
}
Any help please concerning WHY the FOR loop is not executed.
Thank you for helping.

Any help please concerning WHY the FOR loop is not executed.
Simply put: data is empty. (So there is nothing for the loop to iterate over...)
Try something like this, from GSON's documentation:
Type listType = new TypeToken<List<String>>() {}.getType();
List<String> target = new LinkedList<String>();
target.add("blah");
Gson gson = new Gson();
String json = gson.toJson(target, listType);
List<String> target2 = gson.fromJson(json, listType);
I haven't used GSON myself, but there are other examples of how to read lists:
Android gson deserialization into list
GSON : custom object deserialization

Your onPostExecute takes in a parameter called result. Your for loop iterates over the elements in an instance variable called response. Are they supposed to be the same?

How to download a JSON Object array from URL, and Store for Android App?

I'm trying to integrate an API into an android application I am writing, but am having a nightmare trying to get the JSON array. The API has a URL that returns a an JSON array, but having never used JSON before I have no idea how this works, or how to do it.
I've looked and found tons, and tons of examples, but nothing to explain why/how it is done. Any help understanding this would be greatly appreciated.
This is what I've ended up with, again with no understanding of JSON, it was a shot in the dark on my part (using examples/tutorials as a guide)...but it doesn't work :(
import org.json.*;
//Connect to URL
URL url = new URL("URL WOULD BE HERE");
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
connection.connect();
//Get Data from URL Link
int ok = connection.getResponseCode();
if (ok == 200) {
String line = null;
BufferedReader buffer = new BufferedReader(new java.io.InputStreamReader(connection.getInputStream()));
StringBuilder sb = new StringBuilder();
while ((line = buffer.readLine()) != null)
sb.append(line + '\n');
//FROM HERE ON I'm Kinda Lost & Guessed
JSONObject obj = (JSONObject) JSONValue.parse(sb.toString()); //ERROR HERE:complains it dosn't know what JSONValue is
JSONArray array = (JSONArray)obj.get("response");
for (int i=0; i < array.size(); i++) {
JSONObject list = (JSONObject) ((JSONObject)array.get(i)).get("list");
System.out.println(list.get("name")); //Used to debug
}
}
UPDATE/SOLUTION:
So, it turns out that there was nothing wrong w/t the code. I was missusing what I thought it returns. I thought it was a JSONObject array. In actuality it was a JSONObjects wrapped in an array, wrapped in a JSONObject.
For those interested/ having similar issues, this is what I ended up with. I broke it into two methods. First connect/download, then:
private String[] buildArrayList(String Json, String Find) {
String ret[] = null;
try {
JSONObject jObject = new JSONObject(Json);
JSONArray jArray = jObject.getJSONArray("response");
ret = new String[jArray.length()];
for(int i=0;i<jArray.length();i++){
JSONObject json_data = jArray.getJSONObject(i);
String var = json_data.getString(Find);
ret[i] = var;
}
} catch (Exception e) {
e.printStackTrace();
}
return ret;
}

1) use webservice to download your required Json string
2) convert it to your desired object using Google Gson
Gson gson = new Gson();
MyClass C1 = gson.fromJson(strJson, MyClass.class);

Here you used JSONValue.parse() that is invalid.
Insted of that Line write this code:
JSONObject obj = new JSONObject(<String Value>);

Ok my friend, i solved the same problem in my app with the next code:
1.- Class to handle the Http request:
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static JSONObject jObj1 = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url, List<NameValuePair> params) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
//Log.e("JSONObject(JSONParser1):", json);
} catch (Exception e) {
Log.e("Buffer Error json1" +
"", "Error converting result json1:" + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
jObj1 = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser1:", "Error parsing data json1:" + e.toString());
}
// return JSON String
return jObj;
}
}
Later, a class to handle the json info (Arrays, Objects, String, etc...)
public class ListViewer extends ListActivity{
TextView UserName1;
TextView LastName1;
// url to make request
private static String url = "http://your.com/url";
// JSON Node names
public static final String TAG_COURSES = "Courses"; //JSONArray
//public static final String TAG_USER = "Users"; //JSONArray -unused here.
//Tags from JSon log.aspx All Data Courses.
public static final String TAG_COURSEID = "CourseId"; //Object from Courses
public static final String TAG_TITLE = "title";
public static final String TAG_INSTRUCTOR = "instructor";
public static final String TAG_LENGTH = "length";
public static final String TAG_RATING = "Rating"; //Object from Courses
public static final String TAG_SUBJECT = "subject";
public static final String TAG_DESCRIPTION = "description";
public static final String TAG_STATUS = "Status"; //Object from Courses
public static final String TAG_FIRSTNAME = "FirstName"; //Object from User
public static final String TAG_LASTNAME = "LastName"; //Object from User
// contacts JSONArray
JSONArray Courses = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.lay_main);
// Hashmap for ListView
final ArrayList<HashMap<String, String>> coursesList = new ArrayList<HashMap<String, String>>();
// Creating JSON Parser instance (json2)
JSONParser2 jParser2 = new JSONParser2();
// getting JSON string from URL json2
final JSONObject json2 = jParser2.getJSONFromUrl(url);
try {
// Getting Array of Contacts
Courses = json2.getJSONArray(TAG_COURSES);
// looping through All Courses
for(int i = 0; i < Courses.length(); i++){
JSONObject courses1 = Courses.getJSONObject(i);
// Storing each json item in variable
String courseID = courses1.getString(TAG_COURSEID);
//String status = courses1.getString(TAG_STATUS);
String Title = courses1.getString(TAG_TITLE);
String instructor = courses1.getString(TAG_INSTRUCTOR);
String length = courses1.getString(TAG_LENGTH);
String rating = courses1.getString(TAG_RATING);
String subject = courses1.getString(TAG_SUBJECT);
String description = courses1.getString(TAG_DESCRIPTION);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_COURSEID,courseID);
map.put(TAG_TITLE, Title);
map.put(TAG_INSTRUCTOR, instructor);
map.put(TAG_LENGTH, length);
map.put(TAG_RATING, rating);
map.put(TAG_SUBJECT, subject);
map.put(TAG_DESCRIPTION, description);
//adding HashList to ArrayList
coursesList.add(map);
}} //for Courses
catch (JSONException e) {
e.printStackTrace();
}
//Updating parsed JSON data into ListView
ListAdapter adapter = new SimpleAdapter(this, coursesList,
R.layout.list_courses,
new String[] { TAG_COURSEID, TAG_TITLE, TAG_INSTRUCTOR, TAG_LENGTH, TAG_RATING, TAG_SUBJECT, TAG_DESCRIPTION }, new int[] {
R.id.txt_courseid, R.id.txt_title, R.id.txt_instructor, R.id.txt_length, R.id.txt_rating, R.id.txt_topic, R.id.txt_description });
setListAdapter(adapter);
// selecting single ListView item
ListView lv = getListView();
// Launching new screen on Selecting Single ListItem
lv.setOnItemClickListener(new OnItemClickListener() {
//#Override --------check this override for onClick event---------
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String courseID = ((TextView) view.findViewById(R.id.txt_courseid)).getText().toString();
String Title = ((TextView) view.findViewById(R.id.txt_title)).getText().toString();
String instructor = ((TextView) view.findViewById(R.id.txt_instructor)).getText().toString();
String length = ((TextView) view.findViewById(R.id.txt_length)).getText().toString();
String rating = ((TextView) view.findViewById(R.id.txt_rating)).getText().toString();//Check place in layout
String subject = ((TextView) view.findViewById(R.id.txt_topic)).getText().toString();// <- HERE
String description = ((TextView) view.findViewById(R.id.txt_description)).getText().toString();
// Starting new intent
Intent in = new Intent(getApplicationContext(), SingleListItem.class);
in.putExtra(TAG_COURSEID, courseID);
in.putExtra(TAG_TITLE, Title);
in.putExtra(TAG_INSTRUCTOR, instructor);
in.putExtra(TAG_LENGTH, length);
in.putExtra(TAG_RATING, rating);
in.putExtra(TAG_SUBJECT, subject);
in.putExtra(TAG_DESCRIPTION, description);
startActivity(in);
}
});//lv.SetOnclickListener
}//onCreate
}// Activity
in this case, i'll get the Arrays, objects... Hope this give you ideas...

passing object through intent from background service to an activity

I want to pass a custom made vector object containing data from background service to an activity in order to updating UI of that activity.
I am not able to pass my data via intent. Please assist me what i need to do..
Following is the code snippet that i am using. In below code I want to pass article list to an activity.
Vector<RowData> getArticleLog() throws JSONException{
Vector<RowData> articleList = new Vector<RowData>();
RowData rd;
InputStream is = null;
String result = null;
JSONArray jarray = new JSONArray();
//Add data to be send.
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("article_title", "Flying Horse"));
try {
HttpClient httpclient = new DefaultHttpClient();
// for local server xampp
HttpPost httppost = new HttpPost("http://10.0.2.2/groupbook/return_article_log.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.i("postData", response.getStatusLine().toString());
} catch (Exception e) {
Log.e(TAG, "json error : " + e.toString());
}
//convert response to string
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
} catch (Exception e) {
Log.e(TAG, "Error converting result "+e.toString());
}
try {
jarray = new JSONArray(result);
} catch (JSONException e) {
e.printStackTrace();
}
//return jArray in the form of Array list;
JSONObject rowElement = null;
int viewers = 0;
int votes = 0;
for (int i = 0; i < jarray.length(); i++) {
rowElement = jarray.getJSONObject(i);
viewers = rowElement.getInt("viewers");
votes = rowElement.getInt("votes");
rd = new RowData(i,
rowElement.getString("article_title"),
Integer.toString(i),
rowElement.getString("last_post_by"),
"2 hours",
rowElement.getString("catagory_tag"),
Integer.toString(viewers),
rowElement.getString("privacy_tag"),
Integer.toString(votes),
rowElement.getString("catagory_title"));
articleList.add(rd);
}
return articleList;
}
RowData class is as follows :
public class RowData {
protected int mId;
public String articleTitle;
public String articleCounter;
public String lastPostBy;
public String updatedTime;
public String catagoryTag;
public String viewingNow;
public String privacyTag;
public String votes;
public String catagoryTitle;
public RowData(int mId, String articleTitle, String articleCounter,
String lastPostBy, String updatedTime, String catagoryTag,
String viewingNow, String privacyTag, String votes,
String catagoryTitle) {
this.mId = mId;
this.articleTitle = articleTitle;
this.articleCounter = articleCounter;
this.lastPostBy = lastPostBy;
this.updatedTime = updatedTime;
this.catagoryTag = catagoryTag;
this.viewingNow = viewingNow;
this.privacyTag = privacyTag;
this.votes = votes;
this.catagoryTitle = catagoryTitle;
}
}
Is following way is right way??
private void DisplayingInfo() throws JSONException{
Log.d(TAG, "entered DisplayLoggingInfo");
intent.putExtra("articleLog", getArticleLog());
sendBroadcast(intent);
}

One thing you can do is to make your custom class implement Serializable (or Parcelable), send the serializable object with putExtra() method to the activity and use getSerializableExtra() on your activity to get it.
Edit 1:
a quick example:
In your custom class:
import java.io.Serializable;
#SuppressWarnings("serial")
public class YourCustomVectorClass implements Serializable {
// ...
}
In your service where you want to start the activity:
Intent intent = new Intent(yourContext, yourActivity.class);
intent.putExtra("theNameOfTheObject", yourObject);
startActivity(intent);
In your activity:
YourCustomVectorClass yourVector = (YourCustomVectorClass) getIntent().getSerializableExtra("theNameOfTheObject");
Edit 2: After reading the question again, I realized that you're passing a Vector of RowData objects to your Activity.
Since Java Vector class implements Serializable, I think you shouldn't do anything but passing the vector to the activity using putExtra() and get it with getSerializableExtra() on the Activity.