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Can't get the value from doInBackGround() process at onPostExecute()

I'm using AsyncTask to insert, update and delete data from database. I used this code to insert, update, delete and it works fine. But when I want to use select, and show the data at EditText, I can't get the value from doInBackground() to the onPostExecute() and it shows nothing.
Here's my code :
MenuUtama.java
public class MenuUtama extends Activity {
/** Called when the activity is first created. */
private TextView nama_user;
private String nm_user = "";
private EditText kode, nama, harga, deskripsi;
private Button insert, update, delete, cek;
private String kode1, nama1, harga1, deskripsi1;
JSONArray data = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
kode = (EditText) findViewById(R.id.editKode);
nama = (EditText) findViewById(R.id.editNama);
harga = (EditText) findViewById(R.id.editHarga);
deskripsi = (EditText) findViewById(R.id.editDes);
cek = (Button) findViewById(R.id.btnCek);
insert = (Button) findViewById(R.id.buttonInsert);
update = (Button) findViewById(R.id.buttonUpdate);
delete = (Button) findViewById(R.id.buttonDelete);
nama_user = (TextView) findViewById(R.id.textView3);
Intent i = getIntent();
nm_user = i.getStringExtra("nama_user");
nama_user.setText(nm_user);
insert.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
String url = "";
url = "http://192.168.1.10/crudsederhana/aksi.php";
try {
String ko = URLEncoder.encode(kode.getText().toString(),"utf-8");
String n = URLEncoder.encode(nama.getText().toString(),"utf-8");
String hr = URLEncoder.encode(harga.getText().toString(),"utf-8");
String d = URLEncoder.encode(deskripsi.getText().toString(), "utf-8");
url += "?a=insert&kd=" + ko + "&nm=" + n + "&hrg=" + hr + "&deskripsi=" + d;
new CRUD().execute(url);
}
catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
});
update.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String url = "";
url = "http://192.168.1.10/crudsederhana/aksi.php";
try {
String ko = URLEncoder.encode(kode.getText().toString(),"utf-8");
String n = URLEncoder.encode(nama.getText().toString(),"utf-8");
String hr = URLEncoder.encode(harga.getText().toString(),"utf-8");
String d = URLEncoder.encode(deskripsi.getText().toString(), "utf-8");
url += "?a=update&kd=" + ko + "&nm=" + n + "&hrg=" +hr+ "&des=" + d;
new CRUD().execute(url);
}
catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
});
delete.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
String url = "";
kode1 = kode.getText().toString();
url = "http://192.168.1.10/crudsederhana/aksi.php?a=delete&kd=" + kode1;
new CRUD().execute(url);
}
});
cek.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
String url = "";
kode1 = kode.getText().toString();
url = "http://192.168.1.10/crudsederhana/aksi.php?a=read&kd="+kode1;
new CRUD().execute(url);
}
});
}
public class CRUD extends AsyncTask<String, String, String> {
String success;
String kode_d, nama_d, harga_d, des_d;
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
JSONParser jParser = new JSONParser();
JSONObject json = jParser.getJSONFromUrl(params[0]);
try {
success = json.getString("success");
Log.e("error", "nilai sukses=" + success);
JSONArray hasil = json.getJSONArray("login");
if (success.equals("1")) {
for (int i = 0; i < hasil.length(); i++) {
JSONObject c = hasil.getJSONObject(i);
kode_d = c.getString("kd");
nama_d = c.getString("nm");
harga_d = c.getString("hrg");
des_d = c.getString("deskripsi");
}
}
else {
Log.e("erro", "tidak bisa ambil data 0");
}
}
catch (Exception e) {
// TODO: handle exception
Log.e("erro", "tidak bisa ambil data 1");
}
return kode_d;
}
protected void onPostExecute(String result) {
super.onPostExecute(result);
kode.setText(kode_d);
nama.setText(nama_d);
harga.setText(harga_d);
deskripsi.setText(des_d);
}
}
}
JSONParser.java
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, "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();
}
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;
}
public JSONObject makeHttpRequest(String url, String method, List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if (method == "POST") {
// request method is POST
// 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();
}
else if (method == "GET") {
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
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();
}
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;
}
}

It is because you don't return any value from the doInBackground() (always return null) and you are not using the 'string' in the onPostExecute(String result) formal parameter. Garbage-In-Garbage-Out

your doInBackground() returns just a string return kode_d; and then in your onPostExecute(String result) (which expects a String) you use the kode_d which is null.
If you want all of those values to be returned create an ArrayList(), return it at the end doInBackground() and get it in onPostExecute(ArrayList result) with an iteration and pass it to you textviews.
Even better create an object and add the values to each field. Your fields are the kode_d, nama_d, harga_d, des_d
this is what the onPostExecute does
/**
* <p>Runs on the UI thread after {#link #doInBackground}. The
* specified result is the value returned by {#link #doInBackground}.
* To better support testing frameworks, it is recommended that this be
* written to tolerate direct execution as part of the execute() call.
* The default version does nothing.</p>
*
* <p>This method won't be invoked if the task was cancelled.</p>
*
* #param result The result of the operation computed by {#link #doInBackground}.
*
* #see #onPreExecute
* #see #doInBackground
* #see #onCancelled(Object)
*/

How to get the JSON error response and toast it?

Here's my code for when i trying to register user and need a toast which is response from server regarding user already exist. i can post successfully to server using json but if there's response i have to idea how to catch it the image shows example when using postman.
public class RegisterActivity extends AppCompatActivity implements View.OnClickListener{
private EditText signupInputName, signupInputEmail, signupInputPassword, retypeInputPassword;
private Button btnSignUp;
private Button btnLinkLogin;
private String message = "";
private int code = 0;
Person person;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_register);
signupInputName = (EditText) findViewById(R.id.signup_input_name);
signupInputEmail = (EditText) findViewById(R.id.signup_input_email);
signupInputPassword = (EditText) findViewById(R.id.signup_input_password);
retypeInputPassword = (EditText) findViewById(R.id.signup_retype_password);
btnSignUp = (Button) findViewById(R.id.btn_signup);
btnLinkLogin = (Button) findViewById(R.id.btn_link_login);
btnSignUp.setOnClickListener(this);
btnLinkLogin.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(),LoginActivity.class);
startActivity(i);
}
});
}
public String POST(String url, Person person)
{
InputStream inputStream = null;
String result = "";
try {
// 1. create HttpClient
HttpClient httpclient = new DefaultHttpClient();
// 2. make POST request to the given URL
HttpPost httppost = new HttpPost(url);
String json = "";
// 3. build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate("user_name", person.getUsername());
jsonObject.accumulate("email", person.getEmail());
jsonObject.accumulate("password", person.getPassword());
// 4. convert JSONObject to JSON to String
json = jsonObject.toString();
// ** Alternative way to convert Person object to JSON string usin Jackson Lib
// ObjectMapper mapper = new ObjectMapper();
// json = mapper.writeValueAsString(person);
// 5. set json to StringEntity
StringEntity se = new StringEntity(json);
// 6. set httpPost Entity
httppost.setEntity(se);
// 7. Set some headers to inform server about the type of the content
httppost.setHeader("Accept", "application/json");
httppost.setHeader("Content-type", "application/json");
// 8. Execute POST request to the given URL
HttpResponse httpResponse = httpclient.execute(httppost);
// 9. receive response as inputStream
inputStream = httpResponse.getEntity().getContent();
// 10. convert inputstream to string
if(inputStream != null)
result = convertInputStreamToString(inputStream);
else
result = "Error! email exist";
} catch (Exception e) {
Log.d("InputStream", e.getLocalizedMessage());
}
// 11. return result
return result;
}
#Override
public void onClick(View view) {
if(validate() == 1)
{
Toast.makeText(getBaseContext(), message.toString(), Toast.LENGTH_SHORT).show();
}
else if (validate() == 2)
{
Toast.makeText(getBaseContext(), message.toString(), Toast.LENGTH_SHORT).show();
}
else if (validate() == 3)
{
Toast.makeText(getBaseContext(), message.toString(), Toast.LENGTH_SHORT).show();
}
else if (validate() == 4)
{
//Toast.makeText(getBaseContext(), "Success", Toast.LENGTH_SHORT).show();
new HttpAsyncTask().execute("http://ip-addressses/api/register");
}
}
private class HttpAsyncTask extends AsyncTask<String, Void, String>
{
#Override
protected String doInBackground(String... urls) {
person = new Person();
person.setUsername(signupInputName.getText().toString());
person.setEmail(signupInputEmail.getText().toString());
person.setPassword(signupInputPassword.getText().toString());
return POST(urls[0],person);
}
// onPostExecute displays the results of the AsyncTask.
#Override
protected void onPostExecute(String result) {
JSONObject jObject;
try {
jObject = new JSONObject(result);
if (jObject.has("error")) {
String aJsonString = jObject.getString("error");
Toast.makeText(getBaseContext(), aJsonString, Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getBaseContext(), "Login Successful", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
}
private int validate() {
if(signupInputName.getText().toString().trim().equals("") || signupInputEmail.getText().toString().trim().equals("") || signupInputPassword.getText().toString().trim().equals("") || retypeInputPassword.getText().toString().trim().equals(""))
{
code = 1;
message = "Complete the form!";
}
else if (!(signupInputPassword.getText().toString().equals(retypeInputPassword.getText().toString())))
{
code = 2;
message = "Re-check password";
}
else if (!isValidEmail(signupInputEmail.getText().toString()) ) {
code = 3;
message = "Invalid email";
}
else
code = 4;
return code;
}
public final static boolean isValidEmail(String target)
{
if (target == null) {
return false;
} else {
Matcher match = Patterns.EMAIL_ADDRESS.matcher(target);
return match.matches();
}
}
private static String convertInputStreamToString(InputStream inputStream) throws IOException{
BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));
String line = "";
String result = "";
while((line = bufferedReader.readLine()) != null)
result += line;
inputStream.close();
return result;
}
}
Postman response when email exist

Just change this code:
jObject = new JSONObject(result);
if (jObject.has("error"))
{
String aJsonString = jObject.getString("error");
Toast.makeText(getBaseContext(), aJsonString, Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "Login Successful", Toast.LENGTH_SHORT).show();
}
}
catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
Toast.makeText(getBaseContext(),result+"" , Toast.LENGTH_SHORT).show();
}
So by this code, if your response is not JSON it will throw exception in catch. And here you can show toast.

Android - onPostExecute Result doesn't receive info

I have two codes inside the doInBackground, but only the second passes the data to the onPostExecute.
Already tried to debug the code, but it wasn't much helpful. The webservice that I'm using is fully functional, I think.
public void onClickWheater(View view){
new HttpAsyncTask().execute(opa);
}
class HttpAsyncTask extends AsyncTask<String, Void, String> {
ProgressDialog dialog;
#Override
protected String doInBackground(String... params) {
if(params.equals(opa)){
try {
HttpGet get = new HttpGet("http://ghelfer.net/weather.aspx?output=json");
HttpClient client = new DefaultHttpClient();
HttpResponse response = client.execute(get);
int status = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
return data;
} catch (IOException e) {
e.printStackTrace();
}
} else {
try {
HttpGet get = new HttpGet("https://viacep.com.br/ws/" + params[0] + "/json/");
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(get);
int status = response.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity entity = response.getEntity();
String data = EntityUtils.toString(entity);
return data;
}
} catch (Exception e) {
return null;
}
}
return null;
}
Edit - PostExecute
#Override
public void onPostExecute(String result){
dialog.dismiss();
if (result != null){
try{
JSONObject obj = new JSONObject(result);
String logradouro = obj.getString("logradouro");
String complemento = obj.getString("complemento");
String bairro = obj.getString("bairro");
String localidade = obj.getString("localidade");
String uf = obj.getString("uf");
txtLogradouro.setText(logradouro);
txtComplemento.setText(complemento);
txtBairro.setText(bairro);
txtLocalidade.setText(localidade);
txtUF.setText(uf);
JSONObject res = new JSONObject(result);
JSONArray weather = res.getJSONArray("weather");
int dataLength = weather.length();
double avgTemp = 0.0;
double avgHumid = 0.0;
double tempSum = 0.0;
double humidSum = 0.0;
for (int i = 0; i < dataLength; i++) {
JSONObject tempObj = weather.getJSONObject(i);
tempSum += tempObj.getDouble("temperature");
humidSum += tempObj.getDouble("humidity");
}
if (dataLength != 0) {
avgTemp = tempSum/dataLength;
avgHumid = humidSum/dataLength;
}
String temp = Double.toString(avgTemp);
txtTemperature.setText(temp);
} catch (Exception e) {
e.printStackTrace();
}
}
}

JSON: Value of type java.lang.String cannot be converted to JSONObject

I'm trying to program an app to send a String to a service. A friend of mine has a service to receive the data.
Logcat shows this error: "org.json.JSONException: Value FIRST of type java.lang.String cannot be converted to JSONObject"
Here is my code:
Main Activity
public class MainActivity extends Activity {
private String URL = "String with my friend's url";
private Button btnAddValue;
String num = "1";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RadioGroup answer = (RadioGroup) findViewById(R.id.answer);
answer.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
switch (checkedId) {
case R.id.answerA:
num = "1";
break;
case R.id.answerB:
num = "2";
break;
case R.id.answerC:
num = "3";
break;
}
}
});
btnAddValue = (Button) findViewById(R.id.submit);
btnAddValue.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
new AddNewValue().execute(num);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
private class AddNewValue extends AsyncTask<String, Void, Void> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(String... arg) {
// TODO Auto-generated method stub
String number = arg[0];
// Preparing post params
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("number", number));
ServiceHandler serviceClient = new ServiceHandler();
String json = serviceClient.makeServiceCall(URL,
ServiceHandler.POST, params);
Log.d("Create Request: ", "> " + json);
if (json != null) {
try {
JSONObject jsonObj = new JSONObject(json);
boolean error = jsonObj.getBoolean("error");
// checking for error node in json
if (!error) {
// new category created successfully
Log.e("Value added successfully ",
"> " + jsonObj.getString("message"));
} else {
Log.e("Add Error: ",
"> " + jsonObj.getString("message"));
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("JSON Data", "JSON data error!");
}
return null;
}
#Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
}
}
Service Handler
public class ServiceHandler {
static InputStream is = null;
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
public String makeServiceCall(String url, int method,
List<NameValuePair> params) {
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
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();
response = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error: " + e.toString());
}
return response;
}
}
I read questions to other people with the same problem. The solution seemed to be to add a "{" at the beginning of the json String and a "}" at the end, but it didn't work to me. I tried changing this:
String json = serviceClient.makeServiceCall(URL_NEW_PREDICTION,
ServiceHandler.POST, params);
to this:
String json = "{" + serviceClient.makeServiceCall(URL_NEW_PREDICTION,
ServiceHandler.POST, params) + "}";
but the I got this error:
"org.json.JSONException: Expected ':' after FIRST at character 9 of {FIRST DATA New record created successfully}"

You're receiving back a string that is not able to be parsed to JSON. You can't just make something JSON by adding braces, it needs to adhere to proper JSON formatting. This site shows some good examples of what that means.
Specifically, the parser is telling you that having a space after FIRST isn't okay without having quotes around it...but just adding that won't fix the issue, the problem is more deep than that.

Error when parsing json result from http post on android app

I have a php script that returns this json array.
{"PID":"1","PName":"Guitar","Brand":"Fender","Price":"110","Cat#":"1","Typ#":"1"}
I am making a simple app that places these results into several text views. only one product is returned each time as above.
when I run the app I get this Error: org.json.JSONException: Value
{"Typ#":"1","Brand":"test","Cat#":"1","PName":"Test","PID":"2","Price":"120"}
of type org.json.JSONObject cannot be converted to JSONArray.
Here is my code. Is there something wrong with the json result or the code?
public class MainActivity extends ActionBarActivity {
TextView tvname;
TextView tvbrand;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvname = (TextView) findViewById(R.id.tvName);
tvbrand = (TextView) findViewById(R.id.tvBrand);
Button btnPost = (Button) findViewById(R.id.btnPost);
btnPost.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
new getPro().execute();
}
});
}//end of on create
private class getPro extends AsyncTask<String,String,Void>{
private ProgressDialog progressDialog = new ProgressDialog(MainActivity.this);
InputStream inputStream = null;
String result = "";
protected void onPreExecute() {
progressDialog.setMessage("Downloading your data...");
progressDialog.show();
progressDialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
public void onCancel(DialogInterface arg0) {
getPro.this.cancel(true);
}
});
}
#Override
protected Void doInBackground(String... strings) {
String url_select = "http://10.0.2.2/OnetoOne/getProduct.php";
ArrayList<NameValuePair> param = new ArrayList<NameValuePair>();
param.add(new BasicNameValuePair("pid", "2"));
try {
// Set up HTTP post
// HttpClient is more then less deprecated. Need to change to URLConnection
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url_select);
httpPost.setEntity(new UrlEncodedFormEntity(param));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
// Read content & Log
inputStream = httpEntity.getContent();
} catch (UnsupportedEncodingException e1) {
Log.e("UnsupportedEncodingException", e1.toString());
e1.printStackTrace();
} catch (ClientProtocolException e2) {
Log.e("ClientProtocolException", e2.toString());
e2.printStackTrace();
} catch (IllegalStateException e3) {
Log.e("IllegalStateException", e3.toString());
e3.printStackTrace();
} catch (IOException e4) {
Log.e("IOException", e4.toString());
e4.printStackTrace();
}
// Convert response to string using String Builder
try {
BufferedReader bReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1"), 8);
StringBuilder sBuilder = new StringBuilder();
String line = null;
while ((line = bReader.readLine()) != null) {
sBuilder.append(line + "\n");
}
inputStream.close();
result = sBuilder.toString();
} catch (Exception e) {
Log.e("StringBuilding & BufferedReader", "Error converting result " + e.toString());
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
//parse JSON data
try {
JSONArray jArray = new JSONArray(result);
//JSONObject jObject = jArray.getJSONObject(0);
String anem = jArray.getJSONObject(0).getString("PName");
//String getname = jObject.getString("PName");
//String getbrand = jObject.getString("Brand");
tvname.setText(anem);
//tvbrand.setText(getbrand);
this.progressDialog.dismiss();
} catch (JSONException e) {
Log.e("JSONException", "Error: " + e.toString());
}
}
}//end of async
}//end of class
Any help would be greatly appreciated.

That's not an array it's an object
JSONObject jObject = new JSONObject(result);
String anem = jObject.getString("PName");
tvname.setText(anem);

{"Typ#":"1","Brand":"test","Cat#":"1","PName":"Test","PID":"2","Price":"120"} of type org.json.JSONObject cannot be converted to JSONArray.
You are trying to convert a JSONObject into a JSONArray, this is your error.
Use :
JSONOjbect jso = new JSONObject(result);
A JSONObject Start with { and end with }.
A JSONArray Start with [ and end with ].