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Send json string to server

My client type is android and the language is Java.
This class connects to the server and gets the output stream to the connected server.
class ConnectToServer extends AsyncTask<Void, Void, Void>
{
#Override
protected Void doInBackground(Void... params)
{
try {
socket = new Socket(ip,port);
output = new DataOutputStream(socket.getOutputStream());
Log.d(TAG, "Connected To Server!");
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
class SendToServer extends AsyncTask<Void, Void, Void>
{
//Our Json object
JSONObject obj;// = new JSONObject();
//this class is called when the login button is pressed, it sends the username and password as arguments
public SendToServer(String username, String password)
{
//instantiate the new object
obj = new JSONObject();
try {
//create the first field Type
obj.put("Type", new Integer(1)); //Type is something our Server will switch against-Type 1 = login request
obj.put("username", username); //our server will get username
obj.put("password",password); //our server will get password
} catch (JSONException e) {
e.printStackTrace(); //if we get problems let the developer know
}
}
#Override
protected Void doInBackground(Void... params)
{
String jsonText = obj.toString(); //convert our json object into a string
byte[] b =jsonText.getBytes(Charset.forName("UTF-8")); //convert our json object into a byte array
try {
output.writeInt(b.length); // write length of the message
output.write(b); // write the message
output.flush(); //flush - empties the pipe
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
}
The purpose of this code is to send the server the users credentials.
In this C# Server
private void serverClient()
{
while(true)
{
int len = ns.ReadByte(); //read how much data
if (len == 0) //if this == 0 this means client has quit the program
break; //break out of loop and remove client from array list
if (len > 0) //we have a message
{
//read mess
byte[] message = new byte[len]; //create byte array
ns.Read(message, 0, message.Length); //read into the message byte array
string text = Encoding.ASCII.GetString(message, 0, len);
string text1 = Encoding.UTF8.GetString(message, 0, len); //build string from byte array up to how much data we got.
Console.WriteLine(text1);
}
}
removeClients();
}
So the Android client will send the credentials, but when the SendToServer class is called, the client disconnects from the server.
How can I send a Json string to my C# server so it can then read the string and serialize it into an object, depending on the fields.

private void updateDataToServer() {
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("name", name));
nameValuePairs.add(new BasicNameValuePair("score", score));
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url_update);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("pass 1", "connection success ");
} catch (Exception e) {
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address", Toast.LENGTH_LONG).show();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString();
Log.e("pass 2", "connection success ");
} catch (Exception e) {
Log.e("Fail 2", e.toString());
}
try {
JSONObject json_data = new JSONObject(result);
code = (json_data.getInt("code"));
if (code == 1) {
/*
* Toast.makeText(getBaseContext(), "Update Successfully",
* Toast.LENGTH_SHORT).show();
*/
} else {
Toast.makeText(getBaseContext(), "Sorry, Try Again", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Log.e("Fail 3", e.toString());
}
}
class PostDataToServer extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
/*
* pDialog = new ProgressDialog(MainActivity.this);
* pDialog.setMessage("Please wait..."); pDialog.show();
*/
}
#Override
protected String doInBackground(String... params) {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url_create_product);
try {
name = edt_name.getText().toString();
score = edt_score.getText().toString();
quocgia = edt_quocgia.getText().toString();
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("name", name));
nameValuePairs.add(new BasicNameValuePair("score", score));
nameValuePairs.add(new BasicNameValuePair("quocgia", quocgia));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
return null;
}
#Override
protected void onPostExecute(String s) {
/*
* if (pDialog.isShowing()) { pDialog.dismiss();
* Toast.makeText(getApplication(), "Complete",
* Toast.LENGTH_LONG).show(); }
*/
}
}
Hope it helps you

You're reading lines but you aren't writing lines. Add a line terminator to the message being sent, or use println() instead of write().

Attempt to invoke virtual method 'int org.json.JSONObject.getInt(java.lang.String)' on a null object reference

I'm trying to check the username/psw on my phpmyadmin database
but I can't figure out the problem.
The logcat gives me this error:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int org.json.JSONObject.getInt(java.lang.String)' on a null object reference
Java code:
public class MainActivity extends ActionBarActivity {
// Progress Dialog
private ProgressDialog pDialog;
private String password="";
private String userName="";
JSONParser jsonParser = new JSONParser();
// url to create new product
private static String url_login = "http://localhost/android_connect/get_login.php";
// JSON Node names
private static final String TAG_SUCCESS = "success";
Button btnSignIn;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnSignIn=(Button)findViewById(R.id.buttonSignIN);
}
public void signIn(View V)
{
final Dialog dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.login);
dialog.setTitle("Login");
// get the Refferences of views
final EditText editTextUserName=(EditText)dialog.findViewById(R.id.editTextUserNameToLogin);
final EditText editTextPassword=(EditText)dialog.findViewById(R.id.editTextPasswordToLogin);
Button btnSignIn=(Button)dialog.findViewById(R.id.buttonSignIn);
// Set On ClickListener
btnSignIn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// get The User name and Password
userName=editTextUserName.getText().toString();
password=editTextPassword.getText().toString();
new LoginUser().execute();
}
});
dialog.show();
}
class LoginUser extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Verificoo NomeUtente & Password ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Checking login
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("use_username", userName));
params.add(new BasicNameValuePair("use_psw", password));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_login,
"POST", params);
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS)
if (success == 1) {
//blablabla
} else {
Intent intent = getIntent();
finish();
Toast.makeText(MainActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();
startActivity(intent);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
}

#miselking
here the class JsonParser
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET mehtod
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;
}
}

check json is not null
if(json!=null){do something}

Error at this line
httpPost.setEntity(new UrlEncodedFormEntity(params));
Use this line
if (params!=null)
httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
and also in GET method use HTTP.UTF_8 instead of "utf-8"

NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 6 years ago.
I'm Getting this error when runtime my project.
java.lang.NullPointerException: Attempt to invoke virtual method
'boolean java.lang.String.equals(java.lang.Object)' on a null object
reference
at com.example.arhen.tugasrplii.Register$InputData.onPostExecute(Register.java:100)
This is full log :
03-05 03:22:02.822 2575-2575/com.example.arhen.tugasrplii E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.arhen.tugasrplii, PID: 2575
**java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
at com.example.arhen.tugasrplii.Register$InputData.onPostExecute(Register.java:100)**
at com.example.arhen.tugasrplii.Register$InputData.onPostExecute(Register.java:54)
at android.os.AsyncTask.finish(AsyncTask.java:632)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
This is my full code on Register.java :
/** * Created by arhen on 05/03/15. */
public class Register extends Activity{
ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText first_name,last_name,email,username,password;
private static String url = "http://127.0.0.1/login/register.php";
Button register;
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
register = (Button)findViewById(R.id.btn_register);
first_name = (EditText)findViewById(R.id.fld_first);
last_name = (EditText)findViewById(R.id.fld_last);
email = (EditText)findViewById(R.id.fld_email);
username = (EditText)findViewById(R.id.fld_username);
password = (EditText)findViewById(R.id.fld_pwd);
register.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
new InputData().execute();
}
});
}
public class InputData extends AsyncTask<String, String, String>{
String success;
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Register.this);
pDialog.setMessage("Registering Account...");
pDialog.setIndeterminate(false);
pDialog.show();
}
#Override
protected String doInBackground(String... args) {
String strfirst_name = first_name.getText().toString();
String strlast_name = last_name.getText().toString();
String stremail = email.getText().toString();
String strusername = username.getText().toString();
String strpassword = password.getText().toString();
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("first_name",strfirst_name));
params.add(new BasicNameValuePair("last_name",strlast_name));
params.add(new BasicNameValuePair("email",stremail));
params.add(new BasicNameValuePair("username",strusername));
params.add(new BasicNameValuePair("password",strpassword));
JSONObject json =
jsonParser.makeHttpRequest(url,
"POST", params);
try {
success = json.getString("success");
} catch (Exception e) {
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
}
});
}
return null;
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
if (success.equals("1")) {
Toast.makeText(getApplicationContext(),"Registration Succesfully",Toast.LENGTH_LONG).show();
}else{
Toast.makeText(getApplicationContext(),"Registration Failed",Toast.LENGTH_LONG).show();
}
}
}
#Override
public void onBackPressed(){
Intent i = new Intent(getApplicationContext(),Login.class);
i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
finish();
} }
i thought this error from JSONParser.java, .. this the code :
/**
* Created by arhen on 04/03/15.
*/
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;
}
}
this my register.php code:
<?php
$first_name = $_POST['first_name'];
$last_name = $_POST['last_name'];
$email = $_POST['email'];
$username = $_POST['username'];
$pwd = $_POST['password'];
include 'koneksi.php';
$namaTabel = "akun";
header('Content-Type:text/xml');
$query = "INSERT INTO $namaTabel VALUES('','$first_name','$last_name','$email','$username','$pwd')";
$hasil = mysql_query($query);
if($hasil)
{
$response["success"] = "1";
$response["message"] = "Data has Input";
echo json_encode($response);
}
else
{$response["success"] = "0";
$response["message"] = "Upss, Something Happens! Try again";
// echoing JSON response
echo json_encode($response);
}
?>
I have seen this post :
What is a NullPointerException, and how do I fix it?
and I'm try to give success a string like :
String success ="";
But it didnt Works.. it give this statement error has activated on my code :
runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
}
});
I have no idea. Pls Help ..
thanks So Much ...

Looks like this line might be returning null, if String success = "" didn't work:
success = json.getString("success");
Have you inspected the JSON that you are parsing and verified that the "success" field is where you expect and properly formatted?

ERROR parsing data value of type org.json.JSONArray cannot be converted to JSONObject

While Running the code (given after the error msg) throws the error as
Coding follows:
public class Slide extends ActionBarActivity {
private ProgressDialog pDialog;
JSONParser jParser = new JSONParser();
ArrayList<HashMap<String, String>> detailsList; //Creating a Arraylist
private static String URL = "URL to my php page";
private static final String TAG_DETAILS = "details";
private static final String TAG_TITLE = "title";
JSONArray details = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_slide);
new onlineload().execute();
}
class onlineload extends AsyncTask<String, String, String>
{
#Override
protected void onPreExecute()
{
super.onPreExecute();
pDialog = new ProgressDialog(Slide.this);
pDialog.setMessage("Fetching Books...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
#Override
protected String doInBackground(String... arg0) {
// TODO Auto-generated method stub
String title = "";
TextView tvTitle = (TextView)findViewById(R.id.Title);
List<NameValuePair> params = new ArrayList<NameValuePair>();
JSONObject json = jParser.makeHttpRequest(URL, "GET", params);
Log.d("All Products:",json.toString());
try {
details = json.getJSONArray(TAG_DETAILS);
for (int i = 0; i < details.length(); i++) {
JSONObject c = details.getJSONObject(i);
title = title + c.getString(TAG_TITLE)+"\n";
tvTitle.setText(title);
}
}
catch (JSONException e) {
e.printStackTrace();
}
return null;
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Shown above is my java code..
Function of this code is to fetch Book title (more than 10 books title is available in database)from the online database and view it in an scroll view activity ..
my php code is working am getting the output only the problem is in displaying it in android activity !!
Looking for some help!!
JSON CODE:
public class JSONParser {
static InputStream is = null;
static JSONArray jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
// function get json from url
// by making HTTP POST or GET method
public JSONArray 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
Log.d("Entered Get", "Get SUccess"+url+method);
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 JSONArray(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}

Agree with #ρяσѕρєя K
There was cast exception occurred that means you need to use JSON Array. Coz you are using JSON Object where actually JSON Array is required.
If you are confused within response which is receiving is JSONArray or JSONObject then you can go for get() method which return data in Object manner.
example : Object c = details.get(i);
So after that you can check for
If(c instanceOf JSONArray){
/// perform as array operation
}
If(c instanceOf JSONObject){
// perform json object retrieving operation
}

E/JSON Parser(1506): Error parsing data [End of input at character 0 of ]

my app which is supposed to transfer user input data to my SQL database. I am supposed to fill in all fields, then click save so that data gets updated in my sql databse. After cleaning up a lot of errors, i am finally stuck on 1 error that i cant resolve. any help provided would be extremely appreciated.Please advice what changes i can make to get rid of the error. The error is
08-04 05:47:48.799: E/JSON Parser(1506): Error parsing data [End of input at character 0 of ]
My codes below:
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
EditText inputDriver;
EditText inputLicence;
EditText inputOfficer;
EditText inputSpeed;
EditText FineAppl;
EditText inputCategory;
TextView registerFine;
// url to create new fine
private static String url_create_fine = "http://192.168.1.1/android_api/create.php";
// JSON Node names/
private static final String TAG_SUCCESS = "success";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
speed = (EditText) findViewById(R.id.editText3);
Fine = (TextView)findViewById(R.id.editText4);
btnSelectDate=(Button)findViewById(R.id.buttonSelectDate);
btnSelectTime=(Button)findViewById(R.id.buttonSelectTime);
inputDriver = (EditText) findViewById(R.id.editText1);
inputLicence = (EditText) findViewById(R.id.editText2);
inputOfficer = (EditText) findViewById(R.id.editText5);
inputSpeed = (EditText) findViewById(R.id.editText3);
FineAppl = (EditText) findViewById(R.id.editText4);
inputCategory = (EditText) findViewById(R.id.editText6);
registerFine = (TextView) findViewById(R.id.fineregistered);
// Create button
Button btnRegisterfine = (Button) findViewById(R.id.savefine);
// button click event
btnRegisterfine.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// creating new product in background thread
new CreateNewFine().execute();
}
});
}
/**
* Background Async Task to Create new product
* */
class CreateNewFine extends AsyncTask<String, String, String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(FineCalc.this);
pDialog.setMessage("Registering Fine..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground(String... args) {
String driver = inputDriver.getText().toString();
String licencenum = inputLicence.getText().toString();
String officer = inputOfficer.getText().toString();
String speed = inputSpeed.getText().toString();
String fine= FineAppl.getText().toString();
String category = inputCategory.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("driver", driver));
params.add(new BasicNameValuePair("licencenum", licencenum));
params.add(new BasicNameValuePair("officer", officer));
params.add(new BasicNameValuePair("speed", speed));
params.add(new BasicNameValuePair("fine", fine));
params.add(new BasicNameValuePair("category", category));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_create_fine, "POST", params);
// check log cat from response
//Log.d("Create Response", json.toString());
// check for success tag
try {
//if (json.getString(TAG_SUCCESS) != null) {
if(json != null && !(json).isNull(TAG_SUCCESS)){
registerFine.setText("");
String success = json.getString(TAG_SUCCESS);
// int success = json.getInt(TAG_SUCCESS);
// if (success == 1) {
if(Integer.parseInt(success) == 1){
// successfully created product
//Intent i = new Intent(getApplicationContext(), UserLogin.class);
//startActivity(i);
registerFine.setText("Successful");
// closing this screen
finish();
} else {
} // failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
JSONParser.java
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
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, HTTP.UTF_8), 8);
//BufferedReader reader = new BufferedReader(new InputStreamReader(
// is, HTTP.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());
Log.e("JSON Parser", "Error parsing data [" + e.getMessage()+"] "+json);
}
// return JSON String
return jObj;
}
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
And My php
<?php
// array for JSON response
$response = array();
// check for required fields
if (isset($_POST['driver'], $_POST['licencenum'], $_POST['officer'], $_POST['speed'] , $_POST['fine'],$_POST['category'])){
$driver = $_POST['driver'];
$licencenum = $_POST['licencenum'];
$officer = $_POST['officer'];
$speed = $_POST['speed'];
$fine = $_POST['fine'];
$category = $_POST['category'];
// include db connect class
require_once __DIR__ . '/db_connect.php';
// connecting to db
$db = new DB_CONNECT();
// mysql inserting a new row
$result = mysql_query("INSERT INTO fineregister(driver,licencenum,officer,speed,fine,category) VALUES ('$driver','$licencenum','$officer','$speed','$fine', '$category')");
// check if row inserted or not
if ($result) {
// successfully inserted into database
$response["success"] = 1;
$response["message"] = "Speed Ticket Successfully Registered.";
// echoing JSON response
echo json_encode($response);
} else {
// failed to insert row
$response["success"] = 0;
$response["message"] = "Oops! An error occurred.";
// echoing JSON response
echo json_encode($response);
}
} else {
// required field is missing
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
// echoing JSON response
echo json_encode($response);
}
?>

HttpResponse response = client.execute(httpPost);
String responseBody = EntityUtils.toString(response.getEntity());
pass the string into json array and get the response value
JSONArray jsArray = new JSONArray(responseBody);
JSONObject js = jsArray.getJSONObject(0);
String returnvalmsg = js.getString("message");
String returnvalsucc = js.getString("success");
Hint: pass success as "0" not 0