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Connecting Php to MySQLi in Android

I am trying to connect my Android Application with mySQL. I am getting error in LogCat.
You can find my complete code here https://github.com/rraj56801/php-connection
I am concerning only on getting all product here.
class LoadAllProducts extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
#Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(AllProductsActivity.this);
pDialog.setMessage("Loading products. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
// Check your log cat for JSON reponse
// Log.d("All Products: ", json.toString());
try {
// Checking for SUCCESS TAG
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// products found
// Getting Array of Products
products = json.getJSONArray(TAG_PRODUCTS);
// looping through All Products
for (int i = 0; i < products.length(); i++) {
JSONObject c = products.getJSONObject(i);
// Storing each json item in variable
String id = c.getString(TAG_PID);
String name = c.getString(TAG_NAME);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_PID, id);
map.put(TAG_NAME, name);
// adding HashList to ArrayList
productsList.add(map);
}
} else {
// no products found
// Launch Add New product Activity
Intent i = new Intent(getApplicationContext(),
NewProductActivity.class);
// Closing all previous activities
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
/**
* Updating parsed JSON data into ListView
* */
ListAdapter adapter = new SimpleAdapter(
AllProductsActivity.this, productsList,
R.layout.list_item, new String[] { TAG_PID,
TAG_NAME},
new int[] { R.id.pid, R.id.name });
// updating listview
setListAdapter(adapter);
}
});
}
}
JSONParser code here:
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);
if (params!=null)
httpPost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
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(new BasicHttpParams());
// Setup the get request
HttpGet httpGetRequest = new HttpGet("http://127.0.0.1");
try{
// Execute the request in the client
HttpResponse httpResponse = httpclient.execute(httpGetRequest);
// Grab the response
BufferedReader reader = new BufferedReader(new InputStreamReader(httpResponse.getEntity().getContent(), "UTF-8"));
json = reader.readLine();
}catch(Exception e){
Log.d("Error",e.toString());
}
}
} 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;
}
LogCat here:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual
method 'int org.json.JSONObject.getInt(java.lang.String)' on a null
object reference
at
com.example.errahulraj.phpconnection.AllProductsActivity$LoadAllProducts.doInBackground(AllProductsActivity.java:134)
at
com.example.errahulraj.phpconnection.AllProductsActivity$LoadAllProducts.doInBackground(AllProductsActivity.java:105)
at android.os.AsyncTask$2.call(AsyncTask.java:304)

you are having problem in this line.
JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params);
your json object is not getting value hence remains null. and letter you are trying to access a method of null object so the error occurs. check you url
or else check value before using
if(json != null)
{
try
{
int success = json.getInt(TAG_SUCCESS);
...
...
...
}
}

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().

onPostExecute() doesn't start

I have a problem with some information downloaded from a DDBB. I recieve all the information, but I can't store it on my arrays because the onPostExecute() method doesn't starts. I put my code:
RequestRocodromo.java, is the class for making the request and recieve the information, on "results" variable I have all the information, but I can't storage it on the arrays of onPostExecute():
#Override
protected JSONObject doInBackground(String... params)
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(_url);
String results = "NO OK";
try
{
// Add your data
/*List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("mac", _mac ));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));*/
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
response.getAllHeaders();
response.getEntity();
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
{
results = EntityUtils.toString(response.getEntity());
}
broadcastIntent = new Intent();
broadcastIntent.putExtra("correcto", results);
broadcastIntent.setAction(ACTION_REQUEST_ROCODROMO);
broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
_ctx.sendBroadcast(broadcastIntent);
}
catch (Exception ex)
{
ex.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(JSONObject jsonResponse)
{
super.onPostExecute(jsonResponse);
List<String> values = new ArrayList<String>();
ArrayList<String> rocodromoId = new ArrayList<String>();
ArrayList<String> rocodromoArray = new ArrayList<String>();
ArrayList<String> ciudadArray = new ArrayList<String>();
ArrayList<String> comentarioArray = new ArrayList<String>();
//Procesamos los resultados
try
{
if(jsonResponse != null)
{
JSONArray jsonMainNode =jsonResponse.optJSONArray("edificios");
int lengthJsonArr =jsonMainNode.length();
for(int i=0; i<lengthJsonArr; i++)
{
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
rocodromoId.add(jsonChildNode.optString("id"));
rocodromoArray.add(jsonChildNode.optString("nombre"));
ciudadArray.add(jsonChildNode.optString("ciudad"));
comentarioArray.add(jsonChildNode.optString("comentario"));
values.add(jsonChildNode.optString("nombre"));
}
}
String result[] = values.toArray(new String[values.size()]);
broadcastIntent = new Intent();
broadcastIntent.putExtra("edificios", result);
broadcastIntent.putStringArrayListExtra("id_rocodromo", rocodromoId);
broadcastIntent.putStringArrayListExtra("rocodromoArray", rocodromoArray);
broadcastIntent.putStringArrayListExtra("ciudadArray", ciudadArray);
broadcastIntent.putStringArrayListExtra("comentarioArray", comentarioArray);
broadcastIntent.setAction(ACTION_REQUEST_ROCODROMO);
broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
_ctx.sendBroadcast(broadcastIntent);
}
catch (Exception e)
{
String result = "null";
broadcastIntent = new Intent();
broadcastIntent.putExtra("edificios", result);
broadcastIntent.putStringArrayListExtra("id_rocodromo", rocodromoId);
broadcastIntent.putStringArrayListExtra("rocodromoArray", rocodromoArray);
broadcastIntent.putStringArrayListExtra("ciudadArray", ciudadArray);
broadcastIntent.putStringArrayListExtra("comentarioArray", comentarioArray);
broadcastIntent.setAction(ACTION_REQUEST_ROCODROMO);
broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
_ctx.sendBroadcast(broadcastIntent);
}
}
Rocodromo.java, here is where I start the execute method:
RequestRocodromo re = new RequestRocodromo(ctx, finalURL + "request=1");
re.execute("");
Rocodromo.java, here is my broadcast, when I try to obtain the arraylist information I recieve a nullException, because my arraylist are null because it never starts the onPostExecute() method.
public class ReceptorBroadcast extends BroadcastReceiver
{
#Override
public void onReceive(Context arg0, Intent intent)
{
if(RequestRocodromo.ACTION_REQUEST_ROCODROMO.equals(intent.getAction()))
{
idRocodromo = intent.getStringArrayListExtra("id_rocodromo");
Toast.makeText(getApplicationContext(), idRocodromo.get(0).toString(), Toast.LENGTH_LONG).show();
rocodromo = intent.getStringArrayListExtra("rocodromoArray");
Toast.makeText(getApplicationContext(), rocodromo.get(0).toString(), Toast.LENGTH_LONG).show();
ciudad = intent.getStringArrayListExtra("ciudadArray");
Toast.makeText(getApplicationContext(), ciudad.get(0).toString(), Toast.LENGTH_LONG).show();
comentario = intent.getStringArrayListExtra("comentarioArray");
Toast.makeText(getApplicationContext(), comentario.get(0).toString(), Toast.LENGTH_LONG).show();
}
}
}
Can someone help my with that? Thanks! :)

Change on doInBackGround return null to:
try {
return new JSONObject(reusults);
} catch (Throwable t) {
return null;
}

Change you broadcast receiver call in your doInBackground().. as
runOnUiThread(new Runnable() {
#Override
public void run() {
broadcastIntent = new Intent();
broadcastIntent.putExtra("correcto", results);
broadcastIntent.setAction(ACTION_REQUEST_ROCODROMO);
broadcastIntent.addCategory(Intent.CATEGORY_DEFAULT);
_ctx.sendBroadcast(broadcastIntent);
}
});
and check null result in onPostExecute as..
if(null!=jsonResponse) // avoids null pointer;

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

JSONException: Value <br of type java.lang.String cannot be converted to JSONObject

I tried hard to search the solution but I still not manage to solve it. Kindly help. Here my java code : -
public class MainActivity extends Activity {
String project_id;
String id;
InputStream is=null;
String result=null;
String line=null;
int code = 0;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final EditText e_id =(EditText) findViewById(R.id.editText1);
final EditText e_prjId =(EditText) findViewById(R.id.editText2);
Button insert =(Button) findViewById(R.id.button1);
id = e_id.getText().toString();
project_id = e_prjId.getText().toString();
insert.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
insert();
}
});
}
public void insert() {
final ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("id",id));
nameValuePairs.add(new BasicNameValuePair("Project_Id",project_id));
new Thread(new Runnable() {
public void run() {
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.0.111/insert.php");
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 {
Log.i("tagconvertstr", "["+result+"]");
JSONObject json_data = new JSONObject(result);
code=(json_data.getInt("code"));
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(code==1)
{
Toast.makeText(getBaseContext(), "Inserted Successfully",Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "Sorry, Try Again",Toast.LENGTH_LONG).show();
}
}
}).start();
}
php:-
<?php
$uname='root';
$pwd='';
$con = new PDO("mysql:host=192.168.0.111;dbname=wktask", $uname, $pwd);
$ID=$_REQUEST['ID'];
$Project_Id=$_REQUEST['Project_Id'];
$flag['code']=0;
if($r= $con->query("insert into task(ID,Project_Id) values('$ID','$Project_Id')"))
{
$flag['code']=1;
}
echo(json_encode($flag));
?>
I really no idea that what is the reason I keep receive error message from JSON exception error. Really appreciate somemore can help me.
Thanks

Be careful, PHP associative array are case sensitive
You are sending id:
nameValuePairs.add(new BasicNameValuePair("id",id));
which is not equal to ID
In addition to that mistake, you dont check the data in your php script, I rewrote it for you:
$data = array();
if(isset($_POST['id'], $_POST['Project_Id']){
$id=$_POST['id'];
$project_id=$_POST['Project_Id'];
$uname='root';
$pwd='';
$con = new PDO("mysql:host=192.168.0.111;dbname=wktask", $uname, $pwd);
$con->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
$stmt = $con->prepare('INSERT INTO task (`ID`, `Project_Id`) values(:id, :project_id)'))
$success = $stmt->execute(array(':id'=>$id, ':project_id'=>$project_id));
if($success){
$data['code'] = 1;
$data['msg'] = 'INSERT successful';
}else{
$data['code'] = 0;
$data['msg'] = 'INSERT Failed';
}
}else{
$data['code'] = 0;
$data['msg'] = 'values are not set';
}
echo(json_encode($data));