Develop Reference

How to get weather data from api?

I'm new in android.I want to create a weather app that gets data from weather app by api.I write the api code.,but it doesn't work it and it doesn't show in logcat too. I added JsonObject and jsonPart but it doesn't show .First i tried in Log and then device but it doesn't show at all.
public class DownloasTask extends AsyncTask<String,Void,String>{
#Override
at a protected String doInBackground(String... urls) {
String result ="";
URL url;
HttpURLConnection urlConnection = null;
try{
url = new URL(urls[0]);
urlConnection =(HttpURLConnection) url.openConnection();
InputStream in = urlConnection.getInputStream();
InputStreamReader reader = new InputStreamReader(in);
int data = reader.read();
while (data !=1){
char current = (char) data;
result = result +current;
data =reader.read();
}
return result;
}catch (Exception e){
e.printStackTrace();
Log.i("Exception"," url failed");
Toast.makeText(getApplicationContext(),"Could not find the weather",Toast.LENGTH_SHORT).show();
return null;
}
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try{
JSONObject jsonObject = new JSONObject(result);
String weatherInfo = jsonObject.getString("weather");
JSONArray arr = new JSONArray(weatherInfo);
String message ="";
for(int i = 0;i<arr.length();i++){
JSONObject jsonPart =arr.getJSONObject(i);
String main =jsonPart.getString("main");
String description =jsonPart.getString("description");
if(!(main.equals("")) && !description.equals("")){
message +=main +": "+description+"\r\n";
}
Log.i("main",jsonPart.getString("main"));
Log.i("description",jsonPart.getString("description"));
}
if(!message.equals("")){
textView2.setText(message);
}else {
Toast.makeText(getApplicationContext(),"Could not find the weather",Toast.LENGTH_SHORT).show();
}
}catch (Exception e){
e.printStackTrace();
Log.i("jsonobject", "onPostExecute: ");
Toast.makeText(getApplicationContext(),"Could not find the weather",Toast.LENGTH_SHORT).show();
}
}
}
public void getWeather(View view){
DownloasTask task = new DownloasTask()
task.execute("https://openweathermap.org/data/2.5/forecast?q=" +
editText.getText().toString() +
"&appid=b1b15e88fa797225412429c1c50c122a1");
InputMethodManager inputMethodManager =
(InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(editText.getWindowToken(),0);
}
}

SharedPreferences not getting saved

So I have been trying to figure out a way to save the Access Token I get from my API. I can successfully get the JSON response from my API and store it in my result variable within my doInBackground.
However, for some reason it is not getting saved in SharedPreferences in my onPostExecute.
The result variable contains this JSON string {"access_token":"4Oq6o8oAGRf4oflu3hrbsy18qeIfG1","expires_in":36000,"token_type":"Bearer","scope":"read write","refresh_token":"iocSNJ2PTVbph2RnWmcf0Zv69PDKjw"}, which I received from my API.
I have an algorithm that is supposed to save only the access_token for now.
My code is below:
WSAdapter.java
public class WSAdapter {
static public class SendAPIRequests extends AsyncTask<String, String, String> {
// Add a pre-execute thing
SharedPreferences ShPreference;
SharedPreferences.Editor PrefEditor;
static String MyPREFERENCES = "API Authentication";
String accessToken = "Access Token";
private WeakReference<Context> mLoginReference;
// constructor
public SendAPIRequests(Context context){
mLoginReference = new WeakReference<>(context);
}
#Override
protected String doInBackground(String... params) {
Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
Log.e("TAG", params[0]);
Log.e("TAG", params[1]);
//String data = "";
StringBuilder result = new StringBuilder();
HttpURLConnection httpURLConnection = null;
try {
// Sets up connection to the URL (params[0] from .execute in "login")
httpURLConnection = (HttpURLConnection) new URL(params[2]).openConnection();
// Sets the request method for the URL
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
httpURLConnection.setRequestProperty("Accept","application/json");
// Tells the URL that I am sending a POST request body
httpURLConnection.setDoOutput(true);
// Tells the URL that I want to read the response data
httpURLConnection.setDoInput(true);
// JSON object for the REST API
JSONObject jsonParam = new JSONObject();
jsonParam.put("client_id", "mYIHBd321Et3sgn7DqB8urnyrMDwzDeIJxd8eCCE");
jsonParam.put("client_secret", "qkFYdlvikU4kfhSMBoLNsGleS2HNVHcPqaspCDR0Wdrdex5dHyiFHPXctedNjugnoTq8Ayx7D3v1C1pHeqyPh1BjRlBTQiJYSuH6pi9EVeuyjovxacauGVeGdsBOkHI3");
jsonParam.put("username", params[0]);
jsonParam.put("password", params[1]);
jsonParam.put("grant_type", "password");
Log.i("JSON", jsonParam.toString());
// To write primitive Java data types to an output stream in a portable way
DataOutputStream wr = new DataOutputStream(httpURLConnection.getOutputStream());
// Writes out a byte to the underlying output stream of the data posted from .execute function
wr.writeBytes(jsonParam.toString());
// Flushes the jsonParam to the output stream
wr.flush();
wr.close();
// // Representing the input stream
InputStream in = new BufferedInputStream(httpURLConnection.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
// reading the input stream / response from the url
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
// Disconnects socket after using
if (httpURLConnection != null) {
httpURLConnection.disconnect();
}
}
Log.e("TAG", result.toString());
return result.toString();
}
#Override
protected void onPostExecute(String result) {
//super.onPostExecute(result);
// expecting a response code fro my server upon receiving the POST data
Log.e("TAG", result);
// retrieves the context passed
Context context = mLoginReference.get();
ShPreference = context.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
// edits shared preferences for authentication and authorization
PrefEditor = ShPreference.edit();
// to save the Access Token from the API
try {
JSONObject pJObject = new JSONObject(result);
PrefEditor.putString(accessToken, pJObject.getString("access_token"));
PrefEditor.apply();
// algorithm for parsing the JSONArray from the Django REST API
/*for (int i = 0; i < pJObjArray.length(); i++) {
// puts the current iterated JSON object from the array to another temporary object
JSONObject pJObj_data = pJObjArray.getJSONObject(i);
PrefEditor.putString(accessToken, pJObj_data.getString("access_token"));
PrefEditor.apply();
}*/
} catch (JSONException e) {
//Toast.makeText(JSonActivity.this, e.toString(), Toast.LENGTH_LONG).show();
Log.d("Json","Exception = "+e.toString());
}
}
}
This code below includes the code that reads the SharedPreferences. Which should be in the doInBackground of this AsyncTask as I need to put the access_token to the header.
This is supposed to be in the same class.
public class SendPostsRequest extends AsyncTask<String, String, String> {
TextView postsSect;
// Add a pre-execute thing
HttpURLConnection urlConnection;
// gets the activity context
private WeakReference<Context> mPostReference;
// to be able to access activity resources
Activity activity;
SharedPreferences ShPreference;
SharedPreferences.Editor PrefEditor;
String accessToken = "Access Token";
// constructor
public SendPostsRequest(Context context, Activity activity){
mPostReference = new WeakReference<>(context);
this.activity = activity;
}
#Override
protected String doInBackground(String... params) {
StringBuilder result = new StringBuilder();
// retrieves the context passed
Context context = mPostReference.get();
ShPreference = context.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
String APIAuthentication = "Bearer " + ShPreference.getString(accessToken, "");
try {
// Sets up connection to the URL (params[0] from .execute in "login")
urlConnection = (HttpURLConnection) new URL(params[0]).openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setRequestProperty ("Authorization", APIAuthentication);
urlConnection.connect();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
}catch( Exception e) {
e.printStackTrace();
}
finally {
urlConnection.disconnect();
}
return result.toString();
}
#Override
protected void onPostExecute(String result) {
// expecting a response code fro my server upon receiving the POST data
Log.e("TAG", result);
// gets the JSON files stored in the posts details class from Posts Activity
Posts.PostsDetails postsHelper = new Posts().new PostsDetails();
// retrieves the context passed
Context context = mPostReference.get();
// For posts
try {
JSONArray pJObjArray = new JSONArray(result);
// algorithm for parsing the JSONArray from the Django REST API
for (int i = 0; i < pJObjArray.length(); i++) {
// puts the current iterated JSON object from the array to another temporary object
JSONObject pJObj_data = pJObjArray.getJSONObject(i);
// inputs necesarry elements to the ListPosts function
postsHelper.setPost(pJObj_data.getInt("id"), pJObj_data.getString("post_title"), pJObj_data.getString("post_content"));
}
} catch (JSONException e) {
//Toast.makeText(JSonActivity.this, e.toString(), Toast.LENGTH_LONG).show();
Log.d("Json","Exception = "+e.toString());
}
// checks if context is not null before updating posts page
if (context != null){
postsSect = (TextView) activity.findViewById(R.id.PostsSection);
int lastFrJSONArray = postsHelper.getPostID().size() - 1;
// outputs the id of the very first post, something to put to the textview
postsSect.setText("id: " + postsHelper.getPostID().get(lastFrJSONArray - 2) + "\n");
for (int i = lastFrJSONArray; i >= 0; i--)
{
// appending the titles and contents of the current post
postsSect.append("title: " + postsHelper.getPostTitle().get(i) + "\n");
postsSect.append("content: " + postsHelper.getPostContent().get(i) + "\n");
// if this is the last post, then don't need to append id for the next post.
if (i != 0) {
postsSect.append("id: " + postsHelper.getPostID().get(i) + "\n");
}
}
}
}
}
UPDATE:
I have edited my JSON parsing algorithm.
Instead of parsing my JSON object from result as an array, this code here now parses it as an object. The JSONarray algorithm should be commented out.

The response you get from your webservice is actually not a JSONArray, but just a simple JSONObject. Hence change this line:
JSONArray pJObjArray = new JSONArray(result);
to
JSONObject pJObjArray = new JSONObject(result);

If You are not getting token just follow this code. it may help you.
//member variable
SharedPreferences ShPreference;
SharedPreferences.Editor PrefEditor;
String ApiToken;
OnCreate(){
ShPreference = context.getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
ApiToken = ShPreference.getString(accessToken, "");
// call wherever you want
new SendPostsRequest(ApiToken).execute()
}
public class SendPostsRequest extends AsyncTask<String, String, String> {
private String APIToken;
TextView postsSect;
// Add a pre-execute thing
HttpURLConnection urlConnection;
// gets the activity context
// constructor
public SendPostsRequest(String APIToken){
this.APIToken = APIToken;
}
#Override
protected String doInBackground(String... params) {
StringBuilder result = new StringBuilder();
// retrieves the context passed
Context context = mPostReference.get();
String APIAuthentication = APIToken; // or you can direct pass
try {
// Sets up connection to the URL (params[0] from .execute in "login")
urlConnection = (HttpURLConnection) new URL(params[0]).openConnection();
urlConnection.setRequestMethod("GET");
urlConnection.setRequestProperty ("Authorization", APIAuthentication);
urlConnection.connect();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = reader.readLine()) != null) {
result.append(line);
}
}catch( Exception e) {
e.printStackTrace();
}
finally {
urlConnection.disconnect();
}
return result.toString();
}
#Override
protected void onPostExecute(String result) {
// expecting a response code fro my server upon receiving the POST data
Log.e("TAG", result);
// gets the JSON files stored in the posts details class from Posts Activity
Posts.PostsDetails postsHelper = new Posts().new PostsDetails();
// retrieves the context passed
Context context = mPostReference.get();
// For posts
try {
JSONArray pJObjArray = new JSONArray(result);
// algorithm for parsing the JSONArray from the Django REST API
for (int i = 0; i < pJObjArray.length(); i++) {
// puts the current iterated JSON object from the array to another temporary object
JSONObject pJObj_data = pJObjArray.getJSONObject(i);
// inputs necesarry elements to the ListPosts function
postsHelper.setPost(pJObj_data.getInt("id"), pJObj_data.getString("post_title"), pJObj_data.getString("post_content"));
}
} catch (JSONException e) {
//Toast.makeText(JSonActivity.this, e.toString(), Toast.LENGTH_LONG).show();
Log.d("Json","Exception = "+e.toString());
}
// checks if context is not null before updating posts page
if (context != null){
postsSect = (TextView) activity.findViewById(R.id.PostsSection);
int lastFrJSONArray = postsHelper.getPostID().size() - 1;
// outputs the id of the very first post, something to put to the textview
postsSect.setText("id: " + postsHelper.getPostID().get(lastFrJSONArray - 2) + "\n");
for (int i = lastFrJSONArray; i >= 0; i--)
{
// appending the titles and contents of the current post
postsSect.append("title: " + postsHelper.getPostTitle().get(i) + "\n");
postsSect.append("content: " + postsHelper.getPostContent().get(i) + "\n");
// if this is the last post, then don't need to append id for the next post.
if (i != 0) {
postsSect.append("id: " + postsHelper.getPostID().get(i) + "\n");
}
}
}
}
}

Value Connection of type java.lang.String cannot be converted to JSONObject in getting objects from the database

I am trying to retrieve json records from the database. On retrieving the GET request over the browser my json responce is of this structure and returning appropriate data
[{"name":"OOGOGOGO","address":"OPOPOPOP","gender":"OPOPOPOP","email":"OPOPOPOP","phonenumber":"OPOPOPOP","nationality":"OPOOPOPO","fk":1}]
I am calling the endpoint url in the assync task doinbackground and this is the endpoint
url = new URL("http://10.0.2.2:88/example/web/app_dev.php/get/1");
the above endpoint returns 405 status code error. On attempting to catch a json exception I get this error
error gotten org.json.JSONException: Value Connection of type java.lang.String cannot be converted
confused on what could be wrong with this endpoint as it returns a 200 ok json response from postman. Kindly assist

Here's the code snippet.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Fetch network data
new NetworkAsyncTask().execute("http://www.mocky.io/v2/591f32f4110000d10307b4c7");
}
private class NetworkAsyncTask extends AsyncTask<String, Void, String> {
protected String doInBackground(String... strings) {
try {
URL url = new URL(strings[0]);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.connect();
InputStream in = conn.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
stringBuilder.append(line);
}
return stringBuilder.toString();
} catch (Exception e) {
return null;
}
}
protected void onPostExecute(String result) {
if (result != null) {
Log.d("TAG", "Success! Result: " + result);
processResult(result);
} else {
Log.d("TAG", "Failed, no data");
}
}
private void processResult(String result) {
try {
JSONArray jsonArray = new JSONArray(result);
JSONObject nameObject = jsonArray.getJSONObject(0);
String name = nameObject.optString("name");
Log.d("TAG", "name: " + name);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
For more information on networking and JSON on Android, i suggest you read this guide:
https://guides.codepath.com/android/Sending-and-Managing-Network-Requests
https://guides.codepath.com/android/Converting-JSON-to-Models

Using AsyncTask with passing a value

I have been working on this and I have hit a point where I dont know what to do. What I am trying to do is use one class to download and parse out a file into a string and then send that string to another class to parse out the JSON stuff. All the parts work fine by themselves and I have tested everything separately. I just dont know how to send the value to the Json parses to start the parsing.
So this is my filedownloader class.
public class JsonFileDownloader extends AsyncTask<String, Void, String> {
//used to access the website
String username = "admin";
String password = "admin";
public String ret = "";
#Override
protected String doInBackground(String... params) {
Log.d("Params ", params[0].toString());
readFromFile(params[0]);
return ret;
}
private String readFromFile(String myWebpage) {
HttpURLConnection urlConnection = null;
try {
//Get the url connection
URL url = new URL(myWebpage);
Authenticator.setDefault(new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password.toCharArray());
}
});
urlConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = urlConnection.getInputStream();
if (inputStream != null) {
ret = streamToString(inputStream);
inputStream.close();
Log.d("Final String", ret);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
return ret;
}
}
public static String streamToString(InputStream is) throws IOException {
StringBuilder sb = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
while ((line = rd.readLine()) != null) {
sb.append(line);
}
return sb.toString();
}
public String getJsonData()
{
return ret;
}
}
This works fine I have tested it over and over with no errors.
The next is the Json parser which is like this.
public class JSONParser {
JSONObject jsonResponse;
String jsonData;
//Consturctor
public JSONParser()
{
//this.jsonData = jsonData;
// this.OutputData = outPutData;
}
public void parsesData(String promo,
ArrayList<String> pictureHTTP,
ArrayList<String> pathHTTP,
ArrayList<String> labelText) throws IOException {
//Build the Json String
JsonFileDownloader jfd = new JsonFileDownloader();
// jsonData = String.valueOf(jfd.execute(promo));
jfd.execute(promo);
//jfd.getResuts(jsonData);
//jsonData = jfd.ret;
Log.d("JsonData String = " , jsonData);
//Try to parse the data
try
{
Log.d("Jsondata " , jsonData);
//Creaate a new JSONObject ith the name/value mapping from the JSON string
jsonResponse = new JSONObject(jsonData);
//Returns the value mapped by the name if it exists and is a JSONArry
JSONArray jsonMainNode = jsonResponse.optJSONArray("");
//Proccess the JSON node
int lenghtJsonArrar = jsonMainNode.length();
for (int i = 0; i<lenghtJsonArrar; i++)
{
//Get object for each json node
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
//Get the node values
//int song_id = Integer.parseInt(jsonChildNode.optString("song_id").toString());
String picture = jsonChildNode.optString("picture").toString();
String pathName = jsonChildNode.optString("path").toString();
String lableName = jsonChildNode.optString("label".toString());
//Debug Testing code
pictureHTTP.add(picture);
pathHTTP.add(pathName);
labelText.add(lableName);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
Now I know where the problem is occurring. When i try to assign a value to the jsonData it never is assigned so it is null and the system fails.
I have tried a few things after the jfd.exicute() but I just dont know how to get the value from the final string output into the jsonData.
Thank you for any help with this.

Alright, here is a pretty flexible pattern for the overall usage of using AsyncTask to download web content and getting the results from it back to the UI thread.
Step 1 Define an interface that will act as a message bus between the AsyncTask and where you want the data.
public interface AsyncResponse<T> {
void onResponse(T response);
}
Step 2 Create a generic AsyncTask extension that will take any URL and return the results from it. You basically had this already, but I made some tweaks. Most importantly, allowing the setting of the AsyncResponse callback interface.
public class WebDownloadTask extends AsyncTask<String, Void, String> {
private AsyncResponse<String> callback;
// Optional parameters
private String username;
private String password;
// Make a constuctor to store the parameters
public WebDownloadTask(String username, String password) {
this.username = username;
this.password = password;
}
// Don't forget to call this
public void setCallback(AsyncResponse<String> callback) {
this.callback = callback;
}
#Override
protected String doInBackground(String... params) {
String url = params[0];
return readFromFile(url);
}
#Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
if (callback != null) {
callback.onResponse(s);
} else {
Log.w(WebDownloadTask.class.getSimpleName(), "The response was ignored");
}
}
/******* private helper methods *******/
private String streamToString(InputStream is) throws IOException {
StringBuilder sb = new StringBuilder();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
while ((line = rd.readLine()) != null) {
sb.append(line);
}
return sb.toString();
}
private String readFromFile(String myWebpage) {
String response = null;
HttpURLConnection urlConnection = null;
try {
//Get the url connection
URL url = new URL(myWebpage);
// Unnecessary for general AsyncTask usage
/*
Authenticator.setDefault(new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password.toCharArray());
}
});
*/
urlConnection = (HttpURLConnection) url.openConnection();
InputStream inputStream = urlConnection.getInputStream();
if (inputStream != null) {
response = streamToString(inputStream);
inputStream.close();
Log.d("Final String", response);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
}
return response;
}
}
Step 3 Go forth and use that AsyncTask wherever you wish. Here is an example. Note that if you do not use setCallback, you will be unable to get the data that came from the AsyncTask.
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
WebDownloadTask task = new WebDownloadTask("username", "password");
task.setCallback(new AsyncResponse<String>() {
#Override
public void onResponse(String response) {
// Handle response here. E.g. parse into a JSON object
// Then put objects into some list, then place into an adapter...
Toast.makeText(getApplicationContext(), response, Toast.LENGTH_SHORT).show();
}
});
// Use any URL, this one returns a list of 10 users in JSON
task.execute("http://jsonplaceholder.typicode.com/users");
}
}

JSON Object returns a null pointer

I want to insert some items into the database. In the main activity, I retrieve information from the user and pass it to the another class to do some parsing. My JSONObject keeps showing up as NULL.
I am sorry if I am not clear with the question . I've tried to explain it as much as possible.
Below is the code your inputs are welcome
public class MainActivity extends Activity {
/** THE FOLLOWING STRINGS WILL BE DISPLAYED IN LOGCAT */
final String TAG = "########-------MAIN ACTIVITY: LOGIN--------######";
final String URL = "http://46.51.193.32/timereport/ses/sessions";
UserHelper userAdapter;
UserHelper db;
EditText edit_password,edit_username,edit_company;
String regName;
int duration = Toast.LENGTH_LONG;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
db = new UserHelper(this);
userAdapter = new UserHelper(this);
edit_password = (EditText)findViewById(R.id.password);
edit_username = (EditText)findViewById(R.id.user_name);
edit_company = (EditText)findViewById(R.id.company_string);
Button login = (Button)findViewById(R.id.login_button);
login.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
JSONObject jsonobj = new JSONObject();
try{
JSONObject subJson = new JSONObject();
subJson.put("username", edit_username.getText().toString());
subJson.put("password", edit_password.getText().toString());
subJson.put("company", edit_company.getText().toString());
jsonobj.put("user", subJson);
}
catch(JSONException e) {
Log.i("","#####-----error at catch jsonexception-----#####");
}
HandleJSON.SendHttpPost(URL, jsonobj);
String regNameSplit[] = regName.split("-");
try{
userAdapter.openDatabase();
long id = db.insertIntoDatabase(edit_username.getText().toString(),edit_company.getText().toString(), edit_password.getText().toString(),regNameSplit[0], regNameSplit[2]);
Toast.makeText(getApplicationContext(), "You have successfully logged in as: " +"\n" +regNameSplit[0], duration).show();
Log.i(TAG, "Printing value of id which will be inserted only to remove warnings "+id);
userAdapter.closeDatabase();
}
catch(SQLiteException e){
e.printStackTrace();
}
}
});
}
}
This is the class to which I am sending the JSON object to be parsed
public class HandleJSON{
UserHelper userAdapter;
private static final String TAG = "&&----HTTPClient-----**";
public static String SendHttpPost (String URL, JSONObject jsonobj) {
String regName = "";
try{
Log.v("Json object request is ",jsonobj.toString());
DefaultHttpClient httpClientInstance = GetHttpClient.getHttpClientInstance();
HttpPost httpPostRequest = new HttpPost(URL);
Log.v(TAG,"The url is "+URL);
StringEntity se;
se = new StringEntity(jsonobj.toString());
httpPostRequest.setEntity(se);
httpPostRequest.setHeader("Accept", "application/json");
httpPostRequest.setHeader("Content-type", "application/json");
long t = System.currentTimeMillis();
HttpResponse response = (HttpResponse) httpClientInstance.execute(httpPostRequest);
Log.i(TAG, "HTTPRESPONSE RECIEVED" +(System.currentTimeMillis()-t) + "ms");
String resultString = convertStreamToString(response.getEntity().getContent());
Log.v(TAG , "The response is " +resultString);
JSONObject jsonObj = new JSONObject(resultString);
JSONObject sessionJson = jsonObj.getJSONObject("session");
String sessionId = sessionJson.getString("sessionid");
String name = sessionJson.getString("name");
Log.v(TAG,"The session ID is "+sessionId);
Log.v(TAG,"The name is "+name);
regName = name+"-"+sessionId+"-"+URL;
} catch (Exception e){
e.printStackTrace();
}
return regName;
}
private static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try{
while((line = reader.readLine()) !=null ){
sb.append(line + "\n");
}
}
catch (IOException e){
e.printStackTrace();
} finally{
try {
is.close();
} catch (IOException e){
e.printStackTrace();
}
}
return sb.toString();
}
}
I've just added some of the code that was missing at the MainActivity,
String regNameSplit[] = regName.split("-");
keeps showing up as null

Instead of your convertStreamToString() method try using system provided EntityUtils.toString(entity).
IMPORTANT: do not catch generic Exception, this hides unchecked (runtime) exceptions. You might be hiding the JSONException that happens in JSONObject constructor.
Update:
You are calling SendHttpPost and not assigning result to variable:
HandleJSON.SendHttpPost(URL, jsonobj);
should be:
regName = HandleJSON.SendHttpPost(URL, jsonobj);

I don't see anything wrong with this, could you tell me what is the use of regname ?
at your mainactivity just change the following:
regname = HandleJSON.SendHttpPost(URL, jsonobj);
Your not calling back regname to be assigned to name and sessionid that you are returning at the sendhttppost.